Riedon S2-1RJ2 Equivalent & Substitute Parts

Part Overview

The Riedon S2-1RJ2 is a 1 Ohm ±5% 1W wirewound chip resistor in 2615 J-Lead package configuration. This component is designed for current sensing applications with integrated safety features including flame proof, moisture resistant, and pulse withstanding characteristics. The part is Active status and ROHS3 compliant, making it suitable for modern electronic assemblies requiring reliable current measurement in harsh operating environments.

Substitute parts are identified when electrical specifications, mechanical compatibility, and environmental ratings remain within acceptable parameters for the application circuit.

Substiute Parts

S2-1RJ2

RiedonIn Stock: 925S2-1RJ2 Datasheet

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S2-1RF1

RiedonIn Stock: 8593S2-1RF1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The Riedon S2-1RF1 qualifies as a direct substitute for the S2-1RJ2 based on the following criteria:

Matching Parameters:

• Resistance value: 1 Ohms (identical)
• Power rating: 1W (identical)
• Package / Case: 2615 J-Lead (identical)
• Physical dimensions: 0.260" L x 0.154" W, 0.142" height (identical)
• Composition: Wirewound (identical)
• Operating temperature range: -55°C ~ 275°C (identical)
• Temperature coefficient: ±50ppm/°C (identical)
• Features: Current Sense, Flame Proof, Moisture Resistant, Pulse Withstanding, Safety (identical)
• RoHS Status: ROHS3 Compliant (identical)
• MSL: 1 (Unlimited) (identical)

Distinguishing Parameter:

• Tolerance: S2-1RF1 provides ±1% tolerance versus S2-1RJ2 ±5% tolerance

The S2-1RF1 represents an upgrade path where tighter tolerance specification is required without any compromise to mechanical fit, thermal performance, or environmental ratings.

Parameter Comparison

Engineering Selection Recommendations

Both the S2-1RJ2 and S2-1RF1 maintain Active product status with full ROHS3 compliance and REACH affected designation. Selection between these parts depends on circuit tolerance requirements:

The S2-1RJ2 (±5% tolerance) is appropriate for applications where standard tolerance current sensing is acceptable. The S2-1RF1 (±1% tolerance) is selected when precision current measurement or tighter circuit calibration margins are specified. Both parts share identical mechanical footprint, thermal performance, and environmental ratings, ensuring direct substitution without PCB redesign or thermal management modifications.

Frequently Asked Questions (FAQ)

Q: Can S2-1RF1 replace S2-1RJ2 in existing designs?

A: Yes. The S2-1RF1 is mechanically and electrically compatible with identical package dimensions, power rating, and operating temperature range. The only difference is improved tolerance specification (±1% versus ±5%).

Q: What is the primary difference between these parts?

A: Tolerance specification. The S2-1RF1 provides ±1% tolerance compared to the S2-1RJ2 ±5% tolerance. All other electrical and mechanical parameters are identical.

Q: Are both parts suitable for current sensing applications?

A: Yes. Both parts include current sense features and are rated for pulse withstanding and safety applications. They share identical thermal coefficients and operating temperature ranges.

Q: Do these parts require different PCB footprints?

A: No. Both parts use the 2615 J-Lead package with identical dimensions (0.260" L x 0.154" W x 0.142" height). No PCB layout changes are required for substitution.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH affected, and carry identical MSL rating of 1 (Unlimited). Environmental and regulatory compliance is equivalent.

Q: When should I select the S2-1RF1 over the S2-1RJ2?

A: Select S2-1RF1 when circuit design requires tighter tolerance specification for improved current measurement accuracy or when calibration margins demand reduced resistance variation.