RSF2JB56R0 Equivalent & Substitute Parts

Part Overview

The RSF2JB56R0 is a 56 Ohm ±5% 2W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and safety design, with an operating temperature range of -55°C to 235°C. The part is currently active in production with 1108 units in stock. Substitute parts are necessary to address packaging format preferences, higher power ratings for thermal margin requirements, or alternative sourcing when primary inventory is unavailable.

Substiute Parts

RSF2JB56R0

Stackpole Electronics IncIn Stock: 1218RSF2JB56R0 Datasheet

Current PartRFQ

RSMF3JT56R0

Stackpole Electronics IncIn Stock: 2294RSMF3JT56R0 Datasheet

UpgradeRFQ

RSMF2JT56R0

Stackpole Electronics IncIn Stock: 36752RSMF2JT56R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSF2JB56R0 is determined by the following critical parameters: resistance value (56 Ohms), tolerance (±5%), composition (metal oxide film), package type (axial), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 235°C). All substitute parts must maintain these core electrical and mechanical specifications.

The substitute parts are grouped into two categories:

Manufacturer Recommended Substitute (Direct Replacement): RSMF2JT56R0 maintains identical electrical specifications and power rating (2W) with equivalent physical dimensions and performance characteristics. This part differs only in packaging format (Cut Tape vs. Bulk) and series designation (RSMF vs. RSF).

Upgrade Substitute (Higher Power Rating): RSMF3JT56R0 provides identical electrical specifications with an increased power rating (3W vs. 2W), allowing for thermal margin in applications requiring higher dissipation capacity while maintaining all other critical parameters.

Parameter Comparison

Engineering Selection Recommendations

RSMF2JT56R0 is the manufacturer-recommended direct replacement for RSF2JB56R0. Both parts are active products with ROHS3 compliance and REACH unaffected status. Selection of RSMF2JT56R0 is appropriate when Cut Tape packaging is preferred over Bulk format, with significantly higher inventory availability (36,720 units vs. 1,108 units).

RSMF3JT56R0 is suitable for applications where thermal margin is required or where power dissipation calculations indicate potential stress at the 2W rating. The 3W rating provides increased safety margin while maintaining all electrical and environmental specifications. This part is also ROHS3 compliant and REACH unaffected, with adequate inventory (2,189 units).

Both substitute parts maintain identical resistance, tolerance, temperature coefficient, and operating temperature range as the original RSF2JB56R0, ensuring functional compatibility in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can RSMF2JT56R0 be used as a direct replacement for RSF2JB56R0?

A: Yes. RSMF2JT56R0 is the manufacturer-recommended substitute with identical electrical specifications (56 Ohms ±5%, 2W, metal oxide film composition) and operating parameters. The primary difference is packaging format (Cut Tape vs. Bulk) and series designation.

Q: What is the advantage of using RSMF3JT56R0 over the original RSF2JB56R0?

A: RSMF3JT56R0 provides a higher power rating (3W vs. 2W) while maintaining all other electrical and environmental specifications. This allows for increased thermal margin in applications with higher power dissipation requirements or in environments with elevated ambient temperatures.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RSF2JB56R0, RSMF2JT56R0, and RSMF3JT56R0 are all ROHS3 compliant and REACH unaffected.

Q: Do the substitute parts have the same physical dimensions?

A: RSMF2JT56R0 has slightly different dimensions (0.177" Dia x 0.433" L vs. 0.217" Dia x 0.591" L) due to the different series design. RSMF3JT56R0 maintains the same dimensions as RSF2JB56R0 (0.217" Dia x 0.591" L). Both are axial package type and compatible with standard through-hole PCB layouts.

Q: What is the temperature coefficient specification for all parts?

A: All three parts share an identical temperature coefficient of ±200ppm/°C and operate across the same temperature range of -55°C to 235°C.