BMD-200-A-R Equivalent & Substitute Parts

Part Overview

The BMD-200-A-R is a Bluetooth v4.1 transceiver module manufactured by u-blox, featuring an integrated 2.4GHz antenna and the nRF51822 IC. This surface mount module is designed for Bluetooth connectivity applications requiring low-power wireless communication. The product is currently obsolete, making identification of suitable substitute components essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

BMD-200-A-R

u-bloxIn Stock: 1166BMD-200-A-R Datasheet

Current PartRFQ

BMD-300-A-R

u-bloxIn Stock: 50176BMD-300-A-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The BMD-300-A-R qualifies as a substitute for the BMD-200-A-R based on the following substitution criteria:

Common RF Characteristics:

• Manufacturer: u-blox (same manufacturer)
• RF Family/Standard: Bluetooth (same standard family)
• Frequency: 2.4GHz (identical operating frequency)
• Data Rate: 2Mbps (identical data rate)
• Power Output: 4dBm (identical output power)
• Modulation: GFSK (identical modulation scheme)

Compatible Electrical Parameters:

• Voltage Supply: 1.7V ~ 3.6V (overlaps with BMD-200-A-R range of 1.8V ~ 3.6V)
• Serial Interfaces: I2C, I2S, SPI, UART (includes all interfaces of BMD-200-A-R)
• Mounting Type: Surface Mount (same mounting technology)
• RoHS Status: RoHS Compliant (same compliance)
• MSL Rating: 3 (168 Hours) (identical moisture sensitivity)

Protocol Enhancement:

• BMD-300-A-R operates Bluetooth v5.0, which maintains backward compatibility with Bluetooth v4.1 applications while providing enhanced performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The BMD-300-A-R is the designated substitute for the obsolete BMD-200-A-R based on the following engineering factors:

Product Availability: The BMD-300-A-R maintains active production status with substantial inventory availability (50,100 pcs), whereas the BMD-200-A-R is obsolete with limited remaining stock (1,068 pcs). For new designs and production continuity, the BMD-300-A-R ensures long-term component supply.

Compliance and Certification: Both modules maintain identical RoHS compliance and MSL ratings (3, 168 Hours), ensuring equivalent environmental and handling requirements. The BMD-300-A-R carries REACH Unaffected status, providing additional regulatory clarity.

Backward Compatibility: Bluetooth v5.0 protocol implementation in the BMD-300-A-R maintains full backward compatibility with Bluetooth v4.1 applications. Existing firmware and application code designed for the BMD-200-A-R will operate on the BMD-300-A-R without modification.

Performance Enhancement: The BMD-300-A-R provides improved receiver sensitivity (-96dBm vs. -93dBm), expanded memory capacity (512kB Flash/64kB RAM vs. 256kB Flash/16kB RAM), and extended operating temperature range (-40°C to 85°C vs. -25°C to 75°C), supporting broader application requirements.

Interface Compatibility: All serial interfaces of the BMD-200-A-R (I2C, SPI, UART) are present in the BMD-300-A-R, with the addition of I2S support. Existing PCB layouts and firmware communication protocols remain compatible.

Frequently Asked Questions (FAQ)

Q: Can the BMD-300-A-R directly replace the BMD-200-A-R in existing designs?

A: Yes. The BMD-300-A-R is electrically and functionally compatible with the BMD-200-A-R. Both modules operate at identical RF frequencies (2.4GHz), data rates (2Mbps), and output power (4dBm). Serial interface pins (I2C, SPI, UART) are compatible. Bluetooth v5.0 in the BMD-300-A-R maintains backward compatibility with v4.1 applications. No firmware modifications are required for basic Bluetooth connectivity.

Q: What are the key differences between these modules?

A: The BMD-300-A-R uses the nRF52832 IC versus the nRF51822 in the BMD-200-A-R, providing increased memory (512kB Flash/64kB RAM vs. 256kB Flash/16kB RAM), improved receiver sensitivity (-96dBm vs. -93dBm), and extended operating temperature range (-40°C to 85°C vs. -25°C to 75°C). The BMD-300-A-R also includes I2S interface support in addition to I2C, SPI, and UART.

Q: Are there any voltage supply considerations?

A: The BMD-300-A-R voltage supply range (1.7V ~ 3.6V) overlaps with the BMD-200-A-R range (1.8V ~ 3.6V). If your design operates at 1.7V to 1.8V, the BMD-300-A-R provides extended lower-voltage capability. For designs operating above 1.8V, both modules are equivalent.

Q: How do the antenna implementations differ?

A: The BMD-200-A-R features a chip antenna, while the BMD-300-A-R uses a trace antenna. Both are integrated antenna solutions. The trace antenna in the BMD-300-A-R may provide different radiation characteristics; PCB layout considerations should be reviewed against the respective module datasheets.

Q: What is the impact of the different current consumption specifications?

A: Receiving current in the BMD-300-A-R (10.4mA) is lower than the BMD-200-A-R range (12.6mA ~ 13.4mA), improving power efficiency. Transmitting current in the BMD-300-A-R (17mA) is slightly higher than the BMD-200-A-R maximum (16mA). For battery-powered applications, the improved receive efficiency may offset the marginal transmit increase.

Q: Is the BMD-300-A-R suitable for extended temperature applications?

A: Yes. The BMD-300-A-R operating temperature range (-40°C to 85°C) exceeds the BMD-200-A-R range (-25°C to 75°C), making it suitable for industrial and automotive applications requiring extended temperature operation.

Q: Are there packaging or mounting differences?

A: Both modules use surface mount technology. The BMD-200-A-R is specified as 26-SMD Module, while the BMD-300-A-R is specified as Module. Both are suitable for automated PCB assembly. Verify pinout compatibility and PCB footprint requirements against the respective datasheets before layout finalization.