SDC-SSD40NBT Equivalent & Substitute Parts Reference

Part Overview

The SDC-SSD40NBT is a Bluetooth and WiFi 802.11a/b/g/n transceiver module manufactured by Laird Connectivity Inc. This castellation surface mount module integrates the BCM4329 IC and operates across 2.4GHz and 5GHz frequency bands with Bluetooth v2.1 +EDR protocol support. The product is currently classified as obsolete, necessitating identification of active equivalent or substitute components for new designs or production continuity.

Substiute Parts

SDC-SSD40NBT

Laird Connectivity Inc.In Stock: 2827SDC-SSD40NBT Datasheet

Current PartRFQ

453-00003

Laird Connectivity Inc.In Stock: 1103453-00003 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute part identification for the SDC-SSD40NBT is based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• RF Family/Standard: Bluetooth and WiFi capability
• Voltage Supply: 3.3V operation
• Mounting Type: Surface Mount configuration
• Serial Interfaces: UART support (minimum requirement)
• Operating Temperature Range: Compatibility with -30°C ~ 80°C or broader range
• Antenna Configuration: Surface mount antenna interface

Secondary Compatibility Factors:

• Protocol advancement: Newer Bluetooth versions (v4.2 or higher) with backward compatibility considerations
• Frequency band coverage: 2.4GHz and 5GHz band support
• Power output and sensitivity specifications within acceptable operational margins
• Package form factor: Module-level integration

The substitute part 453-00003 meets these criteria through active product status, enhanced protocol support (Bluetooth v4.2, 802.11a/b/g/n/ac), expanded frequency band coverage, improved data rate capability (780Mbps), and maintained 3.3V supply voltage with surface mount configuration.

Parameter Comparison

Engineering Selection Recommendations

For SDC-SSD40NBT Replacement:

The 453-00003 serves as an active substitute for the obsolete SDC-SSD40NBT. Selection of this substitute is based on the following engineering factors:

1. Product Status: The SDC-SSD40NBT is obsolete. The 453-00003 maintains active production status, ensuring long-term component availability and supply chain continuity.

2. Electrical Compatibility: Both modules operate at 3.3V supply voltage and maintain comparable power output (17dBm vs. 18dBm) and receiver sensitivity (-96dBm vs. -95dBm). The 453-00003 transmit current specification (350mA ~ 550mA) is higher than the SDC-SSD40NBT (270mA ~ 314mA), requiring power supply design verification.

3. Protocol Enhancement: The 453-00003 supports Bluetooth v4.2 and 802.11a/b/g/n/ac, providing protocol advancement over the SDC-SSD40NBT's Bluetooth v2.1 +EDR and 802.11a/b/g/n support.

4. Frequency Band Coverage: The 453-00003 provides extended and specified frequency band ranges across 2.4GHz and 5GHz regions, supporting broader regulatory compliance requirements.

5. Interface Expansion: The 453-00003 includes ADC, GPIO, I2C, PCM, SPI, UART, and USB interfaces, compared to UART-only on the SDC-SSD40NBT, enabling enhanced system integration flexibility.

6. Compliance: The 453-00003 is RoHS Compliant, meeting current environmental and regulatory standards.

Design Considerations:

• Antenna Interface Change: The SDC-SSD40NBT uses castellation antenna connection, while the 453-00003 uses U.FL connector. PCB layout and antenna selection must be redesigned accordingly.

• Moisture Sensitivity: The 453-00003 has MSL 4 (72 Hours) rating compared to MSL 1 (Unlimited) for the SDC-SSD40NBT. Storage and handling procedures must comply with the stricter moisture sensitivity requirements.

• Operating Temperature: The 453-00003 supports -30°C ~ 85°C, providing 5°C additional upper temperature margin compared to the SDC-SSD40NBT.

• Power Budget: System power supply design must accommodate the higher transmit current range of the 453-00003 (350mA ~ 550mA maximum).

Frequently Asked Questions (FAQ)

Q1: Can the 453-00003 directly replace the SDC-SSD40NBT without PCB modifications?

A: No. While both are surface mount modules with 3.3V operation, the antenna interface differs fundamentally. The SDC-SSD40NBT uses castellation connection, while the 453-00003 uses U.FL connector. PCB layout redesign and antenna selection changes are required.

Q2: What are the key electrical differences between these modules?

A: The primary electrical difference is transmit current: SDC-SSD40NBT operates at 270mA ~ 314mA, while 453-00003 requires 350mA ~ 550mA. Power supply design must be verified to support the higher current envelope. Receiver sensitivity and power output are comparable.

Q3: Does the 453-00003 support the same Bluetooth version as the SDC-SSD40NBT?

A: No. The SDC-SSD40NBT supports Bluetooth v2.1 +EDR, while the 453-00003 supports Bluetooth v4.2. The newer version provides enhanced features and power efficiency but requires firmware and application compatibility verification.

Q4: What is the impact of the different MSL ratings?

A: The SDC-SSD40NBT has MSL 1 (Unlimited moisture sensitivity), while the 453-00003 has MSL 4 (72 Hours). The 453-00003 requires stricter moisture control during storage, handling, and assembly. Bake-out procedures may be necessary before reflow soldering.

Q5: Are there frequency band coverage differences?

A: Yes. The 453-00003 specifies detailed frequency band ranges (2.4GHz ~ 2.4835GHz, 5.15GHz ~ 5.25GHz, 5.25GHz ~ 5.35GHz, 5.47GHz ~ 5.725GHz, 5.725GHz ~ 5.85GHz), while the SDC-SSD40NBT lists only 2.4GHz and 5GHz. The 453-00003 supports broader regulatory compliance across multiple regions.

Q6: What serial interfaces are available on the 453-00003?

A: The 453-00003 provides ADC, GPIO, I2C, PCM, SPI, UART, and USB interfaces, compared to UART-only on the SDC-SSD40NBT. This expanded interface set enables more flexible system integration options.

Q7: Is the 453-00003 RoHS compliant?

A: Yes. The 453-00003 is RoHS Compliant. The SDC-SSD40NBT RoHS status is not specified in the provided data.

Q8: What is the data rate difference between these modules?

A: The SDC-SSD40NBT supports 3Mbps data rate, while the 453-00003 supports 780Mbps. This significant increase reflects the protocol advancement from Bluetooth v2.1 +EDR / 802.11a/b/g/n to Bluetooth v4.2 / 802.11a/b/g/n/ac.

Q9: Can the 453-00003 operate in the same temperature range as the SDC-SSD40NBT?

A: The 453-00003 supports -30°C ~ 85°C, which encompasses the SDC-SSD40NBT range of -30°C ~ 80°C with an additional 5°C upper margin. Both modules support the same lower temperature limit.

Q10: What inventory status should be considered for production planning?

A: The SDC-SSD40NBT is obsolete with 2779 pieces in stock. The 453-00003 is active with 1002 pieces in stock. For new designs or long-term production, the 453-00003 is the appropriate selection due to active product status and ongoing availability.