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The Laird WB45NBT provides complete enterprise-class Wi-Fi connectivity with an integrated TCP/IP stack, full support for IEEE 802.11a/b/g/n and Bluetooth 4.0 dual-mode air standards with a fully integrated security supplicant providing 802.11i/WPA2 Enterprise authentication, data encryption, and BT protocol stacks.

The WB45NBT has a wide variety of interfaces including Fast Ethernet, serial UART, Hi-Speed USB, SPI, and I2C. The wireless bridge may be configured, monitored, and managed via a Command Line Interface (CLI) over an available dedicated console port, via a web interface over a wireless or Ethernet interface, or via a remote SDK interface over wireless or Ethernet.

The WB45NBT incorporates a Wi-Fi SiP module using Qualcomm Atheros AR6003 which supports IEEE 802.11a/b/g/n. The CSR (CSR8510) Bluetooth chip supports Bluetooth standard 4.0 which includes the Bluetooth Low Energy (BLE) and legacy modes. The product features an ARM9 processor running at 400 MHz, 64 MB of Lower Power DDR (LPDDR) memory, and 128 MB of NAND flash storage running at 1.8 V to minimize power consumption. Several GPIO lines are available for data acquisition and similar applications. The platform runs an embedded Linux operating system based on the 3.x kernel. A Software Developer’s Kit (SDK) with Application Programming Interfaces (API) and software tools are available for the development of custom software applications on the device.

The WB45NBT measures 40 mm long by 40 mm wide by 3.8 mm thick. The wireless bridge physically interfaces to the host device via an 80 pin board to board (B2B) connector (Molex SlimStack™ 54722 Series 80 Pin Connector P/N 54722-0804), which mates to a 1.5 mm stacking height mating part from Molex 55560 Series P/N 55560-0804. The WB45NBT may be secured to the host device via available grounded mounting holes. The WB45NBT operates at temperatures between -20° and + 70° degrees Celsius.

Contingent on compliance results, WB45NBT is a fully integrated module. It has its own RF shielding and does not require shielding provided by the host device into which it is installed in order to maintain compliance with applicable regulatory standards. As such, the device may be tested in a standalone configuration via a breakout board (SDC-BB45NBT).

The WB45NBT provides three U.FL type antenna connectors; the Main antenna (for Wi-Fi) and the Auxiliary (for Bluetooth) work separately to get the best coexistence performance. A third antenna connector multiplexes both the Wi-Fi and the Bluetooth signals into a single RF port through the use of a T/R switch however, this mode of operation is currently not supported. Supported host device antenna types include dipole and monopole antennas.

Regulatory operational requirements are included in this document and may be incorporated into the operating manual of any device into which the WB45NBT is installed. The WB45NBT is designed for installation into mobile devices which typically operate at distances greater than 20 cm from the human body and portable devices which typically operate at distances less than 20 cm from the human body.

Our Response to Shellshock

Recently a flaw was discovered in the Unix Bash shell that creates attack vulnerabilities in Linux machines. Note that this vulnerability does NOT apply to the Laird WB45NBT or WB40NBT (our wireless bridge communications subsystems). The following are the main reasons why this issue isn’t relevant to these products:

  • Our WB45NBT and WB40NBT do not use Bash, the affected shell.
  • These products never pass unfiltered or unvalidated user input to any shell script.
  • Rather than CGI shell scripts, we use PHP which is not vulnerable to this attack.

Physical Interface Pitch: 0.5 mm
Stacking Height: 1.5 mm
Molex 54722 Series 80 Pin Connector P/N 54722-0804
Mating Part
Molex 55560 Series 80 Pin Connector P/N 55560-0804
Ethernet Interface (3.3 V signal level) 10/100 Mbps RMII (Reduced Media Independent Interface)
Asynchronous Serial Port Interfaces
(1.8 V signal level)
Four-wire UART with hardware handshaking (up to 921,600 baud)
Two-wire UART (console) for debug purpose
SPI Interface (1.8 V signal level) Five Wire, Master and Slave modes supported with 2 chip select
USB Interfaces Configurable USB Host port/Device port to support USB full speed and high speed data rates
Two Wire Interface (1.8V signal level) Two-wire I2C (Inter-IC)
CAN Interface (1.8V signal level) Controller area network (multiplexed with Two-wire UART)
Debug Interface Two-wire UART (console) for debug purpose
Digital GPIO (1.8 V signal level) 4 digital General Purpose I/O (GPIO)
Analog GPIO (3.3 V signal level) 4 analog General Purpose I/O (GPIO)
PCM interface 13-bit or 16-bit linear, 8-bit µ-law or A-law companded sample formats
Antenna Interface

Note: Wi-Fi and BT sharing a single antenna is NOT currently supported. 
2 Hirose U.FL connectors for Wi-Fi (Main) and BT (Aux) separately, 50 ohm
Wi-Fi Interface Qualcomm Atheros AR6003 1X1 802.11 a/b/g/n on 20 MHz bandwidth
Bluetooth Interface CSR CSR8510 Bluetooth 4.0 dual-mode (EDR+BLE)
Processor Chip Set Atmel 400 MHz ARM 9, P/N AT91SAM9G25-CU
Operating System Embedded Linux, 3.x kernel
Memory 64 MB LPDDR
Storage 128 MB SLC NAND flash
Input Voltage Requirements

Note: Voltage ripple must be less than 30 mV. 
3.3 VDC +/-5% (Backup) 3.3 VDC ±5% (system) 1.8 VDC +/-5% (Memory and I/O interface)
Current Consumption

These current consumption measurements were taken using Linux kernel version 3.8.0.

Standby refers to the radio operating while connected to an AP but not transmitting or receiving.

Average current was measured with a Fluke 87V DMM. Standby current was measured with a Yokogawa DL9140 oscilloscope and 700937 current probe; the unit was connected to an AP. Tx current reflects constant transmit test mode. During testing, the WB45NBT was set to USB device mode.
  Mode  1.8 V 3.3 V
    Avg. Current Max. Current Avg. Current Max. Current
802.11a Transmit 80 120 297 484
  Receive 97 - 47 -
802.11b Transmit 75 108 243 368
  Receive 97 - 47 -
802.11g Transmit 80 115 210 361
  Receive 97 - 47 -
802.11n (2.4 GHz) Transmit 81 120 194 342
  Receive 97 - 47 -
802.11n (5 GHz) Transmit TBD 120 293 448
  Receive 97 - 47 -
Operating Temperature -20° to +70°C (-4°F to 158°F)
Operating Humidity 10 to 90% (non-condensing)
Storage Temperature -30° to 85°C (-22° to 185°F)
Storage Humidity 10 to 90% (non-condensing)

NOTE: Length, width, and thickness measurements include the metal shielding. 
40 mm (1.57 in.) x 40 mm (1.57 in.) x 3.8 mm (0.15 in.)
Weight 6.8 g (0.24 oz.)
Mounting Connector and through holes
Connector: Molex SlimStack™ P/N 55560-0807 (pitch: 0.50 mm; stack height: 1.500 mm)
Mating part: Molex 55560 Series 80 Pin Connector P/N 55560-0804
Stand-off: EMI STOP F40M20-151126D4BM http://www.emistop.com
Wi-Fi Media Direct Sequence-Spread Spectrum (DSSS)
Complementary Code Keying (CCK)
Orthogonal Frequency Divisional Multiplexing (OFDM)
Wi-Fi Media Access Protocol Carrier sense multiple access with collision avoidance (CSMA/CA)
Network Architecture Infrastructure and ad hoc
Wi-Fi Standards IEEE 802.11a, 802.11b, 802.11d, 802.11e, 802.11g, 802.11h, 802.11i, 802.11n
Wi-Fi Data Rates Supported 802.11a (OFDM): 6, 9, 12, 18, 24, 36, 48, 54 Mbps
802.11b (DSSS, CCK): 1, 2, 5.5, 11 Mbps
802.11g (OFDM): 6, 9, 12, 18, 24, 36, 48, 54 Mbps
802.11n (OFDM,HT20,MCS 0-7): 6.5,13,19.5, 26, 39,52, 58.5, 72.2 Mbps and 7.2,14.4, 21.7, 28.9,43.3, 57.8, 65 Mbps
Modulation BPSK @ 1, 6, 6.5, 7.2 and 9 Mbps
QPSK @ 2, 12, 13, 14.4,18, 19.5 and 21.7 Mbps
CCK @ 5.5 and 11 Mbps
16-QAM @ 24, 26, 28.9, 36, 39 and 43.3 Mbps
64-QAM @ 48, 52, 54, 57.8, 58.5, 65, and 72.2 Mbps
802.11n Spatial Streams 1X1 SISO (Single Input, Single Output)
Regulatory Domain Support FCC (Americas, Parts of Asia, and Middle East)
ETSI (Europe, Middle East, Africa, and Parts of Asia)
MIC (Japan, formerly TELEC)
KC (Korea, formerly KCC)
2.4 GHz Frequency Bands FCC: 2.4 GHz to 2.483 GHz
ETSI: 2.4 GHz to 2.483 GHz
MIC: 2.4 GHz to 2.495 GHz
KC: 2.4 GHz to 2.483 GHz
2.4 GHz Operating Channels FCC: 11 (3 non-overlapping)
ETSI: 13 (3 non-overlapping)
MIC: 14 (4 non-overlapping)
KC: 13 (3 non-overlapping)
5 GHz Frequency Bands FCC: 5.15 GHz to 5.35 GHz, 5.725 GHz to 5.825 GHz
ETSI: 5.15 GHz to 5.35 GHz, 5.47 GHz to 5.725 GHz
MIC: 5.15 GHz to 5.35 GHz, 5.47 GHz to 5.725 GHz (W56)
KC: 5.15 GHz to 5.25 GHz, 5.725 GHz to 5.825 GHz
5 GHz Operating Channels FCC: 23 non-overlapping
ETSI: 19 non-overlapping
MIC: 4 non-overlapping
KC: 8 non-overlapping
Maximum Transmit Power
6 Mbps 15 dBm (31.623 mW)
54 Mbps 13 dBm (19.953 mW)
1 Mbps 16 dBm (39.81 mW)
11 Mbps 16 dBm ( 39.81mW)
6 Mbps 16 dBm (39.81 mW)
54 Mbps 14 dBm ( 39.81mW)
802.11n (2.4 GHz) 
6.5 Mbps (MCS0) 16 dBm (39.81 mW)
65 Mbps(MCS7) 12 dBm (15.85 mW)
802.11n (5 GHz HT20) 
6.5 Mbps(MCS0) 15 dBm (39.81 mW)
65 Mbps (MSC7) 12 dBm (15.85 mW)
2 dBm (1.58 mW) (Class 2)
Typical Receiver Sensitivity
6 Mbps -90 dBm
54 Mbps -74 dBm (PER = 10%)
1 Mbps -92 dBm
11 Mbps -84 dBm (PER = 8%)
6 Mbps -90 dBm
54 Mbps -73 dBm (PER = 10%)
802.11n (2.4 GHz) 
MCS0 Mbps -89 dBm
MCS7 Mbps -71 dBm
802.11n (5 GHz HT20) 
MCS0 Mbps -88 dBm
MCS7 Mbps -71 dBm
1 Mbps -89 dBm
2 Mbps -91 dBm
3 Mbps -85 dBm

NOTE: Support for Federal Information Processing Standards (FIPS) is pending. 
Wireless Equivalent Privacy (WEP)
Wi-Fi Protected Access (WPA)
IEEE 802.11i (WPA2)

Wireless Equivalent Privacy (WEP, RC4 Algorithm)
Temporal Key Integrity Protocol (TKIP, RC4 Algorithm)
Advanced Encryption Standard (AES, Rijndael Algorithm)

Encryption Key Provisioning 
Static (40-bit and 128-bit lengths)
Pre-Shared (PSK)

802.1X Extensible Authentication Protocol Types 
Compliance ETSI Regulatory Domain 
EN 300 328 
EN 300 328 (BT EDR) (v1.8.1)
EN 300 328 (BT LE) (v1.8.1)
EN 301 489-1 (v1.9.2)
EN 301 489-17 
EN 301 893 
EN 60250-1 

FCC Regulatory Domain 
FCC 15.247 DTS – 802.11b/g (Wi-Fi): 2.4 GHz & 5.8 GHz 
FCC 15.407 UNII – 802.11a (Wi-Fi): 2.4 GHz & 5.4 GHz 
FCC 15.247 DSS – BT 2.1 

Industry Canada 
RSS-210 – 802.11a/b/g/n (Wi-Fi) – 2.4 GHz, 5.8 GHz, 5.2 GHz, and 5.4 GHz 
RSS-210 – BT 2.1 

MIC (Japan) Regulatory Domain (formerly TELEC) 
Certificate of Radio Equipment in Japan 

Korea Certification (KC) 
Certificate of Broadcasting and Communication Equipments 
Certifications Wi-Fi Alliance 
802.11a, 802.11b, 802.11g , 802.11n 
WPA Enterprise 
WPA2 Enterprise 
Embedded Client Certification 
Warranty Limited Lifetime
 NOTE: All specifications are subject to change without notice    

The WB45NBT is certified as compliant with ETSI, FCC, and IC standards in addition to its Wi-Fi certification. CCX compliance and Bluetooth SIG Qualification are pending. Laird customers can leverage our grants, approvals, and formal test reports to achieve their required device certifications. The degree to which customers can leverage our certifications is dependent upon the regulatory agency, industry body, and the type of end device.

If any additional information or assistance is required, please contact the Laird wireless certifications group via email or visit our Technical Support Center.


The WB45NBT is compliant to various CE and ETSI standards and specifications:

This testing was conducted with the following antennas:

These formal test reports may be leveraged by mobile and portable device vendors as part of their self declaration to obtain the CE mark required by members of the European Union. ETSI/CE rules differ from those of the FCC and IC in that there is no provision for a modular approval. All approvals and certifications must exist at the device level rather than the module (radio) level.

The WB45NBT is fully compliant with Annex IV procedures in article 10.5 of R&TTE directive 99/5/EC.

Like all Laird Wi-Fi modules, the WB45NBT is fully compliant with European Union Directive 2011/65/EU or Reduction of Hazardous Substances (RoHS) and Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) as per our Declaration of Compliance.


Laird has received the following FCC grants for the WB45NBT(FCC Identifier: SQG-WB45NBT).

FCC Part 15.247 Subpart C

This grant relates to operation in the 2.412 to 2.462 GHz (ISM) and 5.745 to 5.805 GHz (UNII-3) frequency bands.

FCC Part 15.407 Subpart E

These grant relates to operation in the 5.180 to 5.240 GHz (UNII-1), 5.280 to 5.320 GHz (UNII-2), and 5.500 to 5.700 GHz (UNII-2 Extended) frequency bands.

These grants were secured with the following antennas:

Note: When using this grant, the WB45NBT must be installed only in mobile devices. Mobile devices are devices which typically operate at distances greater than 20 cm (7.9 inches) from the human body. When certifying portable devices (those that typically operate at distances less than 20 cm from the human body), a new grant must be secured by the device vendor.

Industry Canada

The WB45NBT is certified to the Industry Canada (IC) RSS-210 standard. IC 3147A-WB45NBT certification is based on FCC certification testing, using the same antennas and transmit power and covering the same frequency bands. The IC grant and test reports relevant to this certification may be found below:


Laird has secured the following MIC certification:

The following test reports in support of the MIC certifications are available:

Korea Certification (KC)

Laird has received the following Korea Certification grant (with its associated test report):

Wi-Fi Alliance

Laird has submitted the WB45NBT to an authorized Wi-Fi Alliance test lab and as a result has received an Embedded Client Certification for the following standards: 802.11a, 802.11b, 802.11g, WPA (both personal and enterprise), and WPA2/802.11i (both personal and enterprise). For those host devices which include the WB45NBT, the vendor may assert that their device incorporates a Wi-Fi Certified Embedded Client. The vendor need not be a member of the Wi-Fi Alliance to make this assertion but may not use the "Wi-Fi Certified" logo in conjunction with their device.

If the device vendor is a member of the Wi-Fi Alliance, they may have WFA certification transferred to them only if they integrate the already-certified module into their device in a "hands off" manner; in other words, make no changes during integration that would impact the way in which the module operates. Laird will provide consultative services to those vendors who choose to pursue a Wi-Fi Alliance certification for their Summit-equipped devices.


Location Phone Number Email

Americas +1-800-492-2320 WirelessInfo@lairdtech.com

Request Information Stock Locator Button Embedded Wireless Solutions Technical Support

Manufacturer Reps


Europe +44-1628-858-940 WirelessInfo@lairdtech.com

Request InformationStock Locator Button Embedded Wireless Solutions Technical Support 

Hong Kong +852-2923-0610 (Sales)
+852-2923-0609 (Support)

Request InformationStock Locator Button Embedded Wireless Solutions Technical Support 

Warranty Statement

Laird Technologies warrants to the original end user customer of its products that its products are free from defects in material and workmanship. Subject to the conditions and limitations set forth below, Laird Technologies will, at its option, either repair or replace any part of its products that prove defective by reason of improper workmanship or materials. Repaired parts or replacement products will be provided by Laird Technologies on an exchange basis, and will be either new or refurbished to be functionally equivalent to new. If Laird Technologies is unable to repair or replace the product, it will refund the current value of the product at the time the warranty claim is made.

This limited warranty does not cover any damage to this product that results from improper installation, accident, abuse, misuse, natural disaster, insufficient or excessive electrical supply, abnormal mechanical or environmental conditions, or any unauthorized disassembly, repair, or modification. This limited warranty also does not apply to any product on which the original identification information has been altered, obliterated or removed, has not been handled or packaged correctly, has been sold as second-hand or has been resold.

This limited warranty covers only repair, replacement or refund for defective Laird Technologies products, as provided above. Laird Technologies is not liable for, and does not cover under warranty, any loss of data or any costs associated with determining the source of system problems or removing, servicing or installing Laird Technologies products. This warranty excludes 3rd party software, connected equipment or stored data. In the event of a claim, Laird Technologies' sole obligation shall be replacement of the hardware.


This limited warranty applies only to the original end user customer of the product. This limited warranty is non-transferable. This limited warranty is in force for the useful lifetime of the original end product into which the Laird Technologies product is installed. Useful lifetime of the original end product may vary but is not to exceed five (5) years from the original date of the end product purchase. Any repair, component replacement or modification to the original product constitutes the end of the lifetime of the end product as defined here.


Warranty on Laird Technologies products are only applicable if the parts were purchased from Laird Technologies authorized OEMs/distributors/resellers or directly from Laird Technologies.


The following parts are not covered by this warranty:

  • Products without the label containing Laird Technologies' serial number or MAC address
  • Products that are purchased from other end users
  • Products that Laird Technologies determines were not purchased through Laird Technologies authorized OEMs/distributors/resellers or directly from Laird Technologies
  • All EOL claims to return back to point of purchase or respective distributors.


The foregoing is the complete warranty for Laird Technologies products and supersedes all other warranties and representations, whether oral or written. Except as expressly set forth above, no other warranties are made with respect to Laird Technologies products and Laird Technologies expressly disclaims all warranties not stated herein, including, to the extent permitted by applicable law, any warranty that may exist under national, state, provincial or local law including but not limited to any implied warranty of non-infringement, merchantability or fitness for a particular purpose. All warranties, whether express or implied, are limited to the periods of time set forth above. 

Laird Technologies products are not authorized for use as critical components in life support equipment or for applications in which the failure or malfunction of the products would create a situation in which personal injury or death is likely to occur. Laird Technologies shall not be liable for the death of any person or any loss, injury or damage to persons or property by use of Laird Technologies products.

Laird Technologies' total liability under this or any other warranty, express or implied, is limited to repair, replacement or refund. Repair, replacement or refund are the sole and exclusive remedies for breach of warranty or any other legal theory. To the fullest extent permitted by applicable law, Laird Technologies shall not be liable to the purchaser or end user customer of a Laird Technologies product for any damages, expenses, lost data, lost revenues, lost savings, lost profits, or any other incidental or consequential damages arising from the purchase, use or inability to use the Laird Technologies product, even if Laird Technologies has been advised of the possibility of such damages.