Laird Connectivity TiWi-R2 450-0037 Equivalent & Substitute Parts

Part Overview

The Laird Connectivity 450-0037 is a Bluetooth and WiFi 802.11b/g/n transceiver module operating at 2.4GHz with Bluetooth v2.1 +EDR Class 1.5 capability. This surface mount module integrates the WL1271 IC and provides serial communication via SDIO and UART interfaces. The product is classified as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design considerations.

Substiute Parts

450-0037

Laird Connectivity Inc.In Stock: 60129450-0037 Datasheet

Current PartRFQ

ESP32-WROOM-32U-N4

Espressif SystemsIn Stock: 65282ESP32-WROOM-32U-N4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Laird Connectivity 450-0037 is determined by the following critical parameters:

RF Capability Match: Both the main part and substitute must support Bluetooth and WiFi 802.11b/g/n protocols operating in the 2.4GHz frequency band.

Transceiver Classification: The part functions as a dual-mode transceiver module with integrated IC. Substitutes must provide equivalent transceiver functionality with comparable data rates and power output specifications.

Interface Compatibility: Serial communication interfaces (SDIO, UART) are essential for system integration. Substitute parts must support these or compatible interface standards.

Physical Form Factor: Surface mount module with U.FL antenna connector is a requirement for mechanical compatibility in existing PCB designs.

Operating Envelope: Supply voltage range (3V ~ 4.8V) and temperature range (-40°C ~ 85°C) define the operational constraints for substitution.

Regulatory Compliance: ECCN and HTSUS classifications must align for export and procurement purposes.

The ESP32-WROOM-32U-N4 meets these substitution criteria through equivalent RF standards, surface mount construction, U.FL antenna interface, and overlapping operating specifications.

Parameter Comparison

Engineering Selection Recommendations

For Existing System Support: The ESP32-WROOM-32U-N4 provides functional equivalence for applications currently using the 450-0037. Both modules operate within the same frequency band, support dual-mode Bluetooth and WiFi protocols, and utilize compatible surface mount U.FL antenna interfaces. The substitute offers enhanced data rate capability (150Mbps vs. 65Mbps) and improved Bluetooth version support (v4.2 vs. v2.1).

Voltage Supply Consideration: The ESP32-WROOM-32U-N4 operates within a narrower supply voltage range (3V ~ 3.6V) compared to the 450-0037 (3V ~ 4.8V). System designs must verify that power supply specifications accommodate this reduced upper voltage limit.

Product Status Impact: Both parts carry end-of-life or restricted design status. The 450-0037 is classified as Obsolete, while the ESP32-WROOM-32U-N4 is designated Not For New Designs. For new product development, evaluation of current-generation alternatives beyond these two parts is recommended based on application requirements.

Regulatory Alignment: Both parts share identical ECCN classification (5A992C), supporting equivalent export and procurement compliance frameworks.

Moisture Sensitivity: The ESP32-WROOM-32U-N4 exhibits lower moisture sensitivity (MSL 3, 168 hours) compared to the 450-0037 (MSL 4, 72 hours), providing improved handling and storage flexibility.

Frequently Asked Questions (FAQ)

Q: Can the ESP32-WROOM-32U-N4 directly replace the 450-0037 in existing designs?

A: Functional replacement is possible for applications requiring Bluetooth and WiFi 802.11b/g/n connectivity. Both modules provide U.FL antenna interfaces and surface mount construction. However, the narrower supply voltage range (3V ~ 3.6V vs. 3V ~ 4.8V) and different package footprint (38-SMD vs. 52-SMD) require verification of power supply specifications and PCB layout compatibility.

Q: What are the key differences in RF performance between these modules?

A: The ESP32-WROOM-32U-N4 provides higher data rate capability (150Mbps vs. 65Mbps), increased power output (20.5dBm vs. 18.3dBm), and improved Bluetooth version support (v4.2 vs. v2.1). Sensitivity specifications are comparable (-98dBm vs. -97dBm). Both operate in the 2.4GHz band with equivalent modulation schemes.

Q: Are the serial interfaces compatible between these modules?

A: Both modules support SDIO and UART interfaces. The ESP32-WROOM-32U-N4 provides additional interfaces (GPIO, I2C, I2S, PWM, SPI) not present in the 450-0037. Existing SDIO and UART implementations are compatible, with the substitute offering expanded interface options.

Q: What packaging considerations apply to substitution?

A: The 450-0037 uses a 52-SMD module package, while the ESP32-WROOM-32U-N4 uses a 38-SMD module package. PCB footprint and layout modifications are required. Both employ surface mount construction and U.FL antenna connectors, maintaining mechanical compatibility for antenna integration.

Q: How do moisture sensitivity ratings affect handling and storage?

A: The 450-0037 requires handling within 72 hours of package opening (MSL 4), while the ESP32-WROOM-32U-N4 allows 168 hours (MSL 3). The substitute part provides extended shelf life and reduced risk of moisture-related failures during manufacturing processes.

Q: Are there regulatory or export compliance differences?

A: Both modules share identical ECCN classification (5A992C), indicating equivalent export control treatment. Procurement and regulatory compliance frameworks remain consistent between the two parts.