S4-15RJ1 Equivalent & Substitute Parts

Part Overview

The S4-15RJ1 is a 15 Ohms ±5% 2W chip resistor manufactured by Riedon in the 4525 J-Lead package configuration. This wirewound current sense resistor is designed for applications requiring flame-proof, moisture-resistant, and pulse-withstanding performance characteristics. The component is ROHS3 compliant and rated for operating temperatures from -55°C to 275°C. Finding equivalent or substitute parts may be necessary due to inventory constraints, design optimization requirements, or application-specific tolerance specifications.

Substiute Parts

S4-15RJ1

RiedonIn Stock: 817S4-15RJ1 Datasheet

Current PartRFQ

S4-15RF1

RiedonIn Stock: 879S4-15RF1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S4-15RJ1 are identified based on strict parameter matching across electrical and mechanical specifications. The primary substitution criteria are:

• Identical resistance value: 15 Ohms
• Identical power rating: 2W
• Identical package configuration: 4525 J-Lead
• Identical composition: Wirewound
• Identical operating temperature range: -55°C ~ 275°C
• Identical temperature coefficient: ±20ppm/°C
• Identical feature set: Current Sense, Flame Proof, Moisture Resistant, Pulse Withstanding, Safety
• Identical RoHS and MSL compliance status

The S4-15RF1 qualifies as a substitute part. The tolerance specification differs (±1% versus ±5%), representing an upgrade in precision capability while maintaining all other electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the S4-15RJ1 and S4-15RF1 are active products from Riedon with identical compliance certifications (ROHS3 Compliant, REACH Affected). Selection between these parts depends on tolerance requirements for the specific application. The S4-15RJ1 with ±5% tolerance is suitable for applications where standard precision is acceptable. The S4-15RF1 with ±1% tolerance provides enhanced precision for applications requiring tighter resistance value control. Both parts maintain identical thermal performance, safety features, and environmental ratings across the full operating temperature range of -55°C to 275°C.

Frequently Asked Questions (FAQ)

Q: Can S4-15RF1 be used as a direct replacement for S4-15RJ1?

A: Yes. The S4-15RF1 is electrically and mechanically compatible with the S4-15RJ1. Both parts share identical resistance values, power ratings, package configurations, operating temperature ranges, and feature sets. The primary difference is tolerance specification, where S4-15RF1 offers improved precision.

Q: What is the significance of the tolerance difference between these parts?

A: Tolerance defines the acceptable deviation from the nominal resistance value. The S4-15RJ1 allows ±5% deviation (14.25 to 15.75 Ohms), while the S4-15RF1 allows ±1% deviation (14.85 to 15.15 Ohms). Applications requiring precise current sensing or tight circuit performance specifications benefit from the S4-15RF1's narrower tolerance band.

Q: Are the physical dimensions identical between S4-15RJ1 and S4-15RF1?

A: Yes. Both parts use the 4525 J-Lead package with identical dimensions: 0.449" L x 0.252" W (11.40mm x 6.40mm) and maximum seated height of 0.197" (5.00mm).

Q: Do both parts meet the same compliance requirements?

A: Yes. Both S4-15RJ1 and S4-15RF1 are ROHS3 compliant, REACH affected, and carry identical moisture sensitivity level (MSL 1 - Unlimited) and environmental ratings.

Q: Which part should be selected for current sensing applications?

A: Both parts are rated for current sense applications. Selection depends on the required accuracy of current measurement. The S4-15RF1 with ±1% tolerance provides more accurate current sensing due to its tighter resistance tolerance.