S4-100RJ1 Equivalent & Substitute Parts

Part Overview

The S4-100RJ1 is a 2W wirewound chip resistor manufactured by Riedon, rated at 100 Ohms with ±5% tolerance. This component is designed for current sensing applications and features flame-proof, moisture-resistant, and pulse-withstanding characteristics. The part is Active in product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical and mechanical specifications are required for design flexibility, inventory optimization, or performance enhancement within the allowed parameter ranges.

Substiute Parts

S4-100RJ1

RiedonIn Stock: 1092S4-100RJ1 Datasheet

Current PartRFQ

S4-100RF1

RiedonIn Stock: 2041S4-100RF1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S4-100RJ1 is permissible when the following core parameters remain constant or improve:

• Resistance value: 100 Ohms (exact match required)
• Power rating: 2W (minimum requirement)
• Package / Case: 4525 J-Lead (mechanical compatibility)
• Operating temperature range: -55°C ~ 275°C (minimum coverage required)
• Composition: Wirewound (functional requirement for current sensing)
• Features: Current Sense, Flame Proof, Moisture Resistant, Pulse Withstanding, Safety (all required)
• RoHS Status: ROHS3 Compliant (regulatory requirement)
• Moisture Sensitivity Level: 1 (Unlimited) (environmental requirement)

The S4-100RF1 qualifies as a direct substitute because it maintains all mandatory parameters while offering improved tolerance (±1% versus ±5%), which represents an upgrade in precision without compromising any electrical or mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the S4-100RJ1 and S4-100RF1 are Active products with ROHS3 compliance and REACH Affected status. The S4-100RF1 represents an upgrade path due to its tighter tolerance specification (±1% versus ±5%), while maintaining identical electrical performance, thermal characteristics, and mechanical compatibility. Selection between these parts should be based on circuit tolerance requirements and application precision demands. Both parts satisfy identical regulatory and environmental compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can S4-100RF1 be used as a direct replacement for S4-100RJ1?

A: Yes. The S4-100RF1 maintains all mandatory electrical and mechanical parameters, including 100 Ohm resistance, 2W power rating, 4525 J-Lead package, and identical operating temperature range. The improved tolerance specification does not introduce incompatibility.

Q: What is the primary difference between these two parts?

A: The tolerance specification differs: S4-100RJ1 is ±5%, while S4-100RF1 is ±1%. All other electrical, thermal, and mechanical parameters are identical.

Q: Are both parts suitable for current sensing applications?

A: Yes. Both parts include current sense functionality along with flame-proof, moisture-resistant, and pulse-withstanding characteristics required for this application class.

Q: Do these parts have identical package dimensions?

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: Are there any compliance or regulatory differences?

A: No. Both parts are ROHS3 Compliant, REACH Affected, classified as EAR99, and share identical HTSUS coding.