RSPF3JA4R70 Equivalent & Substitute Parts

Part Overview

The RSPF3JA4R70 is a 4.7 Ohms ±5% 3W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame-proof and moisture-resistant construction, designed for applications requiring reliable performance across industrial temperature ranges. The part is currently active in production with 626 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part becomes unavailable or when packaging requirements differ.

Substiute Parts

RSPF3JA4R70

Stackpole Electronics IncIn Stock: 704RSPF3JA4R70 Datasheet

Current PartRFQ

RSMF3JT4R70

Stackpole Electronics IncIn Stock: 1694RSMF3JT4R70 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

The RSMF3JT4R70 qualifies as a direct substitute for the RSPF3JA4R70 based on the following critical parameters:

• Identical resistance value: 4.7 Ohms
• Identical tolerance: ±5%
• Identical power rating: 3W
• Identical composition: Metal Oxide Film
• Identical package type: Axial
• Identical physical dimensions: 0.217" Dia x 0.591" L (5.50mm x 15.00mm)
• Identical number of terminations: 2
• Identical RoHS compliance: ROHS3 Compliant
• Identical REACH status: REACH Unaffected

The primary difference between these parts is the packaging format (Tape & Box versus Cut Tape) and the operating temperature upper limit, with the substitute part rated to 235°C compared to 155°C for the original part.

Parameter Comparison

Engineering Selection Recommendations

Both the RSPF3JA4R70 and RSMF3JT4R70 are active production parts from the same manufacturer with identical electrical specifications and physical form factors. Selection between these parts should be based on:

1. Packaging requirements: The RSPF3JA4R70 is supplied in Tape & Box format, while the RSMF3JT4R70 is supplied in Cut Tape format. Choose based on assembly process and inventory management needs.

2. Temperature margin: The RSMF3JT4R70 provides extended operating temperature capability to 235°C, compared to 155°C for the RSPF3JA4R70. For applications operating near the upper temperature limit of the original part, the substitute offers additional thermal margin.

3. Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, suitable for regulated applications.

4. Availability: Current inventory shows 1617 units of RSMF3JT4R70 versus 626 units of RSPF3JA4R70, providing greater supply availability for the substitute part.

Frequently Asked Questions (FAQ)

Q: Can RSMF3JT4R70 be used as a direct replacement for RSPF3JA4R70?

A: Yes. Both parts share identical electrical specifications (4.7 Ohms, ±5%, 3W), composition (metal oxide film), and physical dimensions (5.50mm x 15.00mm axial). The primary differences are packaging format and maximum operating temperature.

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

A: Tape & Box packaging includes a full reel of components on tape with a protective box, suitable for bulk storage and automated assembly lines. Cut Tape packaging provides individual strips cut from the reel, suitable for smaller quantity requirements and manual assembly processes.

Q: Does the higher operating temperature rating of RSMF3JT4R70 affect electrical performance?

A: The substitute part maintains the same resistance value and tolerance specifications across its operating range. The extended temperature capability to 235°C represents an additional design margin without changing the electrical characteristics within the common operating range of both parts.

Q: Are both parts suitable for moisture-sensitive applications?

A: The RSPF3JA4R70 explicitly includes moisture-resistant features in its specification. The RSMF3JT4R70 does not list moisture resistance as a feature. For applications requiring moisture resistance, verify the RSMF3JT4R70 against specific environmental requirements.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for restricted substances in electrical and electronic equipment.