RSF1JB2R20 Equivalent & Substitute Parts

Part Overview

The RSF1JB2R20 is a 2.2 Ohms ±5% 1W through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and safety characteristics, designed for applications requiring reliable power dissipation in compact form factors. The part is currently active in production with robust inventory availability. Substitute parts may be required due to packaging format preferences, specific application constraints, or supply chain considerations while maintaining electrical and mechanical compatibility.

Substiute Parts

RSF1JB2R20

Stackpole Electronics IncIn Stock: 1051RSF1JB2R20 Datasheet

Current PartRFQ

RSMF1JT2R20

Stackpole Electronics IncIn Stock: 16685RSMF1JT2R20 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSF1JB2R20 is determined by the following critical parameters:

• Resistance value: 2.2 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 1W (exact match required)
• Composition: Metal Oxide Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Package type: Axial (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

The RSMF1JT2R20 qualifies as a direct substitute based on matching all critical electrical parameters and compliance certifications. Differences in physical dimensions, packaging format (Cut Tape vs. Bulk), and maximum operating temperature do not preclude substitution when application requirements are within the substitute's specified limits.

Parameter Comparison

Engineering Selection Recommendations

The RSMF1JT2R20 is a qualified substitute for the RSF1JB2R20 based on matching electrical specifications, composition, and compliance certifications. Both parts are manufactured by Stackpole Electronics Inc and maintain ROHS3 compliance.

Selection between these parts should be based on:

• Packaging requirements: RSF1JB2R20 is supplied in Bulk format; RSMF1JT2R20 is supplied in Cut Tape (CT) format
• Physical dimensions: RSMF1JT2R20 has a smaller form factor (3.20mm diameter vs. 4.50mm; 9.00mm length vs. 11.00mm)
• Maximum operating temperature: RSF1JB2R20 operates to 235°C; RSMF1JT2R20 operates to 200°C

Applications requiring operation above 200°C must use the RSF1JB2R20. Applications with space constraints may benefit from the RSMF1JT2R20's compact dimensions. Both parts are active products with established supply availability.

Frequently Asked Questions (FAQ)

Q: Can RSMF1JT2R20 replace RSF1JB2R20 in all applications?

A: The RSMF1JT2R20 is electrically equivalent and can replace the RSF1JB2R20 in applications operating at or below 200°C. Applications requiring operation above 200°C must use the RSF1JB2R20, which is rated to 235°C.

Q: What are the physical dimension differences?

A: The RSF1JB2R20 measures 0.177" diameter x 0.433" length (4.50mm x 11.00mm). The RSMF1JT2R20 measures 0.126" diameter x 0.354" length (3.20mm x 9.00mm). The substitute is smaller in both dimensions.

Q: Are both parts RoHS compliant?

A: Yes, both RSF1JB2R20 and RSMF1JT2R20 are ROHS3 compliant and REACH unaffected.

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

A: Bulk packaging is supplied as loose components suitable for manual assembly or large-volume automated processes. Cut Tape (CT) packaging provides components on carrier tape in specified quantities, suitable for automated pick-and-place equipment and controlled dispensing.

Q: Do both parts have the same resistance tolerance?

A: Yes, both parts have ±5% tolerance at 2.2 Ohms resistance value.

Q: Are the temperature coefficients identical?

A: Yes, both parts have a temperature coefficient of ±200ppm/°C.