WRF3JB510R Equivalent & Substitute Parts

Part Overview

The WRF3JB510R is a 510 Ohms ±5% 3W through-hole axial wirewound resistor manufactured by Stackpole Electronics Inc. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part features flame-proof and moisture-resistant construction with a temperature coefficient of -80/+900ppm/°C and operates across -55°C to 225°C.

Substiute Parts

WRF3JB510R

Stackpole Electronics IncIn Stock: 1184WRF3JB510R Datasheet

Current PartRFQ

SBCHE4510RJ

TE Connectivity Passive ProductIn Stock: 2114SBCHE4510RJ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WRF3JB510R is determined by the following core parameters:

• Resistance value: 510 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Composition: Wirewound (exact match required)
• Package configuration: Axial or axial-compatible form factor
• Power rating: Equal to or greater than 3W
• RoHS compliance: ROHS3 Compliant (regulatory requirement)
• Operating temperature range: Must encompass or exceed -55°C to 225°C

The SBCHE4510RJ meets these substitution criteria with a higher power rating (4W) and extended upper operating temperature (350°C), providing enhanced thermal margin and design flexibility.

Parameter Comparison

Engineering Selection Recommendations

The SBCHE4510RJ is the qualified substitute for the WRF3JB510R based on the following engineering criteria:

Both parts maintain identical resistance (510 Ohms) and tolerance (±5%) specifications, ensuring electrical equivalence in circuit operation. The SBCHE4510RJ provides a higher power rating (4W versus 3W), which offers additional thermal headroom without compromising circuit performance.

The substitute part is manufactured by TE Connectivity Passive Product and maintains active product status, ensuring long-term availability and supply chain continuity. Both components are ROHS3 compliant and carry EAR99 ECCN classification, meeting regulatory requirements for the WRF3JB510R application.

The SBCHE4510RJ operates across -55°C to 350°C, exceeding the original part's temperature range of -55°C to 225°C. The substitute features a tighter temperature coefficient (±200ppm/°C) compared to the original (-80/+900ppm/°C), providing improved stability across temperature variations.

Frequently Asked Questions (FAQ)

Q: Can the SBCHE4510RJ directly replace the WRF3JB510R in existing designs?

A: Yes. Both parts share identical resistance (510 Ohms) and tolerance (±5%) specifications. The substitute's higher power rating (4W) and extended operating temperature range provide enhanced performance margins without requiring circuit redesign.

Q: What are the physical dimension differences between these parts?

A: The WRF3JB510R measures 0.197" diameter × 0.630" length (5.00mm × 16.00mm). The SBCHE4510RJ measures 0.315" × 0.276" rectangular × 0.787" length (8.00mm × 7.00mm × 20.00mm) and offers radial-formed configuration options. Physical layout verification is required for space-constrained applications.

Q: Are both parts suitable for high-temperature applications?

A: The SBCHE4510RJ operates to 350°C, providing superior thermal performance for elevated-temperature environments. The original WRF3JB510R is rated to 225°C. Application requirements determine which part is appropriate.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the WRF3JB510R and SBCHE4510RJ are ROHS3 compliant and carry EAR99 ECCN classification, meeting current regulatory requirements.

Q: Why is the WRF3JB510R classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The SBCHE4510RJ maintains active product status with confirmed inventory availability, ensuring design continuity and supply chain reliability.