RSF3JB56R0 Equivalent & Substitute Parts

Part Overview

The RSF3JB56R0 is a 56 Ohm, 3W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and safety design, operating across a temperature range of -55°C to 235°C. The part is currently active in production with 1097 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

RSF3JB56R0

Stackpole Electronics IncIn Stock: 1142RSF3JB56R0 Datasheet

Current PartRFQ

ROX3SJ56R

TE Connectivity Passive ProductIn Stock: 4612ROX3SJ56R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSF3JB56R0 is determined by the following critical parameters:

• Resistance Value: 56 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power Rating: 3W (exact match required)
• Composition: Metal Oxide Film (exact match required)
• Package Type: Axial (exact match required)
• Number of Terminations: 2 (exact match required)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)

The ROX3SJ56R from TE Connectivity Passive Product meets all critical electrical and mechanical parameters. Both parts are metal oxide film axial resistors with identical resistance, tolerance, and power specifications. Both maintain ROHS3 compliance and operate within acceptable temperature ranges for industrial applications.

Parameter Comparison

Engineering Selection Recommendations

Both the RSF3JB56R0 and ROX3SJ56R are active production components with ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

• Availability: ROX3SJ56R has higher inventory (4589 units) compared to RSF3JB56R0 (1097 units)
• Packaging Format: RSF3JB56R0 is supplied in Bulk; ROX3SJ56R is supplied in Cut Tape (CT)
• Temperature Performance: RSF3JB56R0 operates to 235°C maximum; ROX3SJ56R operates to 200°C maximum
• Temperature Coefficient: RSF3JB56R0 has ±200ppm/°C; ROX3SJ56R has ±350ppm/°C
• Physical Dimensions: ROX3SJ56R is slightly smaller in diameter and length

Both parts satisfy the core electrical requirements of 56 Ohm, 3W, ±5% tolerance metal oxide film axial resistors.

Frequently Asked Questions (FAQ)

Q: Can ROX3SJ56R replace RSF3JB56R0 in all applications?

A: ROX3SJ56R meets the critical electrical specifications (56 Ohm, 3W, ±5%, metal oxide film, axial package). However, applications requiring operation above 200°C should retain the RSF3JB56R0, which is rated to 235°C. The temperature coefficient difference (±200ppm/°C vs ±350ppm/°C) may affect precision applications requiring tight temperature stability.

Q: What are the physical compatibility considerations?

A: Both parts use axial packaging with 2 terminations and similar dimensions. The ROX3SJ56R is slightly smaller (5.50mm diameter vs 6.00mm, 16.00mm length vs 17.50mm). This size difference is negligible for most PCB layouts and through-hole mounting applications.

Q: Are both parts RoHS compliant?

A: Yes, both RSF3JB56R0 and ROX3SJ56R are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What is the difference in packaging supply?

A: RSF3JB56R0 is supplied in Bulk packaging, while ROX3SJ56R is supplied in Cut Tape (CT) format. Selection depends on assembly process requirements and inventory management practices.

Q: Which part should be selected for new designs?

A: Selection should be based on application temperature requirements, packaging preferences, and supply chain availability. Both parts are active production components suitable for new designs within their respective operating temperature ranges.