RPM6937 Equivalent & Substitute Parts

Part Overview

The RPM6937 is a remote receiver sensor manufactured by Rohm Semiconductor, designed for infrared signal reception at 36.7kHz with a 16-meter sensing distance. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part operates within a 4.5V to 5.5V supply range and is housed in a through-hole package suitable for standard PCB assembly.

Substiute Parts

RPM6937

Rohm SemiconductorIn Stock: 3671RPM6937 Datasheet

Current PartRFQ

TSOP2137

Vishay Semiconductor Opto DivisionIn Stock: 862TSOP2137 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RPM6937 is determined by the following critical parameters:

• B.P.F. Center Frequency: Must match 36.7kHz for signal compatibility
• Voltage Supply Range: Must accommodate 4.5V ~ 5.5V operation
• Mounting Type: Must be through-hole configuration
• Orientation: Must be side view package
• Compliance Standards: Must maintain ROHS3 compliance and REACH unaffected status

The TSOP2137 from Vishay Semiconductor Opto Division satisfies all mandatory substitution criteria. While the TSOP2137 offers extended sensing distance (35m versus 16m) and lower supply current (1.1mA versus 1.5mA), these represent performance enhancements rather than incompatibilities. The substitute maintains identical frequency tuning, voltage compatibility, and physical mounting characteristics.

Parameter Comparison

Engineering Selection Recommendations

The TSOP2137 is the qualified substitute for RPM6937 applications. Selection is supported by:

• Active Product Status: TSOP2137 maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Compliance Alignment: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements
• Electrical Compatibility: Identical supply voltage range and center frequency enable direct circuit substitution
• Physical Compatibility: Matching through-hole mounting and side-view orientation permit PCB layout reuse without modification
• Performance Enhancement: The TSOP2137 delivers superior sensing distance and reduced supply current, providing design margin improvements

Applications requiring the full -30°C to 100°C temperature range of the RPM6937 should evaluate the TSOP2137's -25°C to 85°C operating window against specific thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can TSOP2137 replace RPM6937 in existing designs without PCB modification?

A: Yes. Both components share identical through-hole mounting, side-view orientation, and supply voltage specifications. PCB layouts require no physical changes.

Q: What is the impact of the extended sensing distance in TSOP2137?

A: The TSOP2137 provides 35-meter range versus the RPM6937's 16-meter range. This represents enhanced performance and does not create compatibility issues. Applications designed for 16-meter operation will function correctly with the extended range capability.

Q: Are there temperature range considerations for substitution?

A: The TSOP2137 operates from -25°C to 85°C, compared to RPM6937's -30°C to 100°C range. Applications requiring operation below -25°C or above 85°C must retain the original RPM6937 specification or identify alternative solutions.

Q: How do the supply current specifications affect circuit design?

A: TSOP2137 draws 1.1mA versus RPM6937's 1.5mA. This 0.4mA reduction improves power efficiency and reduces thermal load. Existing power supply designs will accommodate this lower current without modification.

Q: What is the significance of MSL rating differences?

A: RPM6937 carries MSL 3 (168-hour limit), while TSOP2137 carries MSL 1 (unlimited). TSOP2137 offers superior moisture tolerance and simplified storage requirements, reducing handling constraints during manufacturing.

Q: Are both components RoHS compliant?

A: Yes. Both RPM6937 and TSOP2137 maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory standards.