Riedon S4-0R01J1 Equivalent & Substitute Parts

Part Overview

The Riedon S4-0R01J1 is a 10 mOhms ±5% 2W wirewound chip resistor in 4525 J-Lead package configuration. This current sense resistor is designed for precision measurement applications requiring low resistance values with high power dissipation capability. The component features flame proof, moisture resistant, and pulse withstanding characteristics, making it suitable for demanding industrial and automotive environments. As an active product with established supply availability, substitute parts are identified to provide design flexibility for tolerance upgrades or inventory optimization.

Substiute Parts

S4-0R01J1

RiedonIn Stock: 846S4-0R01J1 Datasheet

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S4-0R01F1

RiedonIn Stock: 1451S4-0R01F1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the S4-0R01J1 is determined by the following critical parameters that must remain constant across equivalent parts:

• Resistance value: 10 mOhms (exact match required)
• Power rating: 2W (exact match required)
• Package / Case: 4525 J-Lead (exact match required)
• Operating temperature range: -55°C to 275°C (exact match required)
• Physical dimensions: 0.449" L x 0.252" W, 0.197" max height (exact match required)
• Composition: Wirewound (exact match required)

The S4-0R01F1 qualifies as a direct substitute because it maintains all critical parameters while offering an upgraded tolerance specification (±1% versus ±5%). This tolerance improvement provides enhanced precision for current sensing applications without requiring any circuit redesign or board layout modifications.

Parameter Comparison

Engineering Selection Recommendations

Both the S4-0R01J1 and S4-0R01F1 maintain active product status with full regulatory compliance (ROHS3 and REACH). The S4-0R01F1 represents an upgrade path for applications requiring tighter tolerance control in current sensing circuits. Selection between these parts depends on circuit tolerance requirements: the S4-0R01J1 is suitable for applications tolerating ±5% resistance variation, while the S4-0R01F1 is specified for designs requiring ±1% accuracy. Both parts are identical in all mechanical, thermal, and environmental characteristics, ensuring direct board-level compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the S4-0R01F1 be used as a direct replacement for the S4-0R01J1?

A: Yes. The S4-0R01F1 is mechanically and electrically compatible with the S4-0R01J1. Both parts share identical package dimensions (4525 J-Lead), power rating (2W), resistance value (10 mOhms), and operating temperature range (-55°C to 275°C). The S4-0R01F1 provides improved tolerance (±1% versus ±5%) without requiring circuit redesign or board layout changes.

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

A: The tolerance specification differs. The S4-0R01J1 is rated at ±5% tolerance, while the S4-0R01F1 is rated at ±1% tolerance. All other electrical and mechanical parameters remain identical.

Q: Are there any package or footprint differences?

A: No. 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). PCB footprints are interchangeable.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the S4-0R01J1 and S4-0R01F1 are ROHS3 compliant, REACH affected, and classified under ECCN EAR99 with HTSUS code 8533.21.0080.

Q: What is the moisture sensitivity level for these parts?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.