RSMF3JB2K40 Equivalent & Substitute Parts

Part Overview

The RSMF3JB2K40 is a 2.4 kOhms ±5% 3W through hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film axial resistor features flame proof and safety characteristics, designed for applications requiring reliable power dissipation in harsh thermal environments. The part maintains Active product status with 1085 units currently in stock. Substitute parts are identified to provide procurement flexibility while maintaining identical electrical and mechanical specifications.

Substiute Parts

RSMF3JB2K40

Stackpole Electronics IncIn Stock: 1106RSMF3JB2K40 Datasheet

Current PartRFQ

RSMF3JT2K40

Stackpole Electronics IncIn Stock: 2062RSMF3JT2K40 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RSMF3JB2K40 are identified based on matching the following critical parameters:

• Resistance value: 2.4 kOhms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Metal Oxide Film
• Package type: Axial
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C to 235°C
• Physical dimensions: 0.217" Dia x 0.591" L (5.50mm x 15.00mm)
• Compliance certifications: ROHS3 Compliant, REACH Unaffected

The primary difference between the main part and substitute is packaging format: the main part is supplied in Bulk packaging, while the substitute is available in Cut Tape (CT) packaging. Both parts are manufactured by Stackpole Electronics Inc within the RSMF series and maintain identical electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both RSMF3JB2K40 and RSMF3JT2K40 are functionally equivalent for circuit applications requiring 2.4 kOhms 3W axial resistors. Selection between these parts should be based on procurement and assembly requirements:

The RSMF3JB2K40 in Bulk packaging is suitable for high-volume manufacturing environments with automated handling systems. The RSMF3JT2K40 in Cut Tape (CT) packaging accommodates pick-and-place equipment and lower-volume assembly operations.

Both parts maintain Active product status and satisfy ROHS3 and REACH compliance requirements. Electrical performance, thermal characteristics, and mechanical dimensions are identical across both variants, ensuring direct substitution without circuit redesign or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can RSMF3JT2K40 replace RSMF3JB2K40 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Bulk versus Cut Tape). No circuit modifications are required.

Q: What is the difference between Bulk and Cut Tape packaging?

A: Bulk packaging supplies components in loose form suitable for manual handling or bulk processing. Cut Tape (CT) packaging provides components on continuous tape for automated pick-and-place assembly equipment.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.217" Dia x 0.591" L (5.50mm x 15.00mm) and use identical Axial package geometry.

Q: Do both parts meet the same compliance standards?

A: Yes. Both RSMF3JB2K40 and RSMF3JT2K40 are ROHS3 Compliant and REACH Unaffected.

Q: What is the temperature operating range?

A: Both parts operate from -55°C to 235°C with a temperature coefficient of ±200ppm/°C.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Identical physical dimensions and electrical specifications allow direct substitution on printed circuit boards without layout modifications.