RSF3JB2K20 Equivalent & Substitute Parts

Part Overview

The RSF3JB2K20 is a 2.2 kOhms ±5% 3W through-hole resistor with axial leads, manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and safety design, operating across -55°C to 235°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across packaging formats and manufacturer offerings.

Substiute Parts

RSF3JB2K20

Stackpole Electronics IncIn Stock: 1044RSF3JB2K20 Datasheet

Current PartRFQ

RSMF3JT2K20

Stackpole Electronics IncIn Stock: 1085RSMF3JT2K20 Datasheet

MFR RecommendedRFQ

ROX3SJ2K2

TE Connectivity Passive ProductIn Stock: 162940ROX3SJ2K2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following core parameters: resistance value (2.2 kOhms), tolerance (±5%), power rating (3W), composition (metal oxide film), and axial package configuration. All identified substitutes maintain these electrical and mechanical specifications. Packaging format differences (Bulk, Tape & Reel, Cut Tape) do not affect electrical equivalence. Operating temperature range and temperature coefficient variations are noted but do not preclude substitution when the application requirements fall within the specified operating window of each part.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and ROHS3 compliance. The RSF3JB2K20 and RSMF3JT2K20 share identical electrical specifications including temperature coefficient (±200ppm/°C) and maximum operating temperature (235°C). The RSMF3JT2K20 differs only in packaging format (Tape & Reel versus Bulk) and physical dimensions.

The ROX3SJ2K2 from TE Connectivity maintains equivalent resistance, tolerance, and power rating. The temperature coefficient is ±350ppm/°C and maximum operating temperature is 200°C. Selection of ROX3SJ2K2 is appropriate when the application operating temperature does not exceed 200°C and the higher temperature coefficient is acceptable for the circuit design.

Frequently Asked Questions (FAQ)

Q: Can RSMF3JT2K20 replace RSF3JB2K20 in all applications? A: Yes. Both parts are electrically identical with matching resistance (2.2 kOhms), tolerance (±5%), power rating (3W), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 235°C). The difference is packaging format: RSMF3JT2K20 is supplied in Tape & Reel format while RSF3JB2K20 is Bulk. Axial lead configuration and physical dimensions are compatible for through-hole PCB assembly.

Q: What are the limitations of ROX3SJ2K2 as a substitute? A: The ROX3SJ2K2 maintains all core electrical specifications (2.2 kOhms, ±5%, 3W, metal oxide film, axial). The operating temperature maximum is 200°C compared to 235°C for the RSF3JB2K20, and the temperature coefficient is ±350ppm/°C versus ±200ppm/°C. Selection requires confirmation that the application does not exceed 200°C and that the higher temperature coefficient is acceptable for circuit performance.

Q: Are there physical dimension differences between these parts? A: Yes. RSF3JB2K20 measures 0.236" Dia x 0.689" L (6.00mm x 17.50mm). RSMF3JT2K20 measures 0.217" Dia x 0.591" L (5.50mm x 15.00mm). ROX3SJ2K2 measures 0.217" Dia x 0.630" L (5.50mm x 16.00mm). All are axial configuration and compatible with standard through-hole PCB layouts, though board spacing should be verified for the larger RSF3JB2K20.

Q: Do all parts meet the same compliance standards? A: All three parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control. Moisture sensitivity level is not applicable to all parts.