S4-0R02J1 Equivalent & Substitute Parts

Part Overview

The S4-0R02J1 is a 20 mOhms ±5% 2W wirewound chip resistor in 4525 J-Lead package manufactured by Riedon. 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 ROHS3 compliance and unlimited moisture sensitivity level, the S4-0R02J1 remains in production. Equivalent and substitute parts may be required for design optimization, tolerance upgrades, or inventory management purposes.

Substiute Parts

S4-0R02J1

RiedonIn Stock: 874S4-0R02J1 Datasheet

Current PartRFQ

S4-0R02F1

RiedonIn Stock: 1207S4-0R02F1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S4-0R02J1 is determined by the following critical parameters that must remain constant or improve:

• Resistance value: 20 mOhms (exact match required)
• Power rating: 2W (minimum requirement)
• Package / Case: 4525 J-Lead (mechanical and electrical compatibility)
• Operating temperature range: -55°C to 275°C (minimum coverage required)
• Composition: Wirewound (functional requirement for current sense applications)
• 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 S4-0R02F1 qualifies as a direct substitute with an upgrade in tolerance specification from ±5% to ±1%, providing improved precision while maintaining all other critical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the S4-0R02J1 and S4-0R02F1 are active products manufactured by Riedon with full ROHS3 compliance and REACH affected status. The S4-0R02F1 provides improved tolerance specification at ±1% compared to the ±5% tolerance of the S4-0R02J1, while maintaining identical electrical performance, mechanical dimensions, and environmental operating characteristics. Selection between these parts depends on circuit tolerance requirements and application precision specifications. Both components satisfy identical regulatory and compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the S4-0R02F1 be used as a direct replacement for the S4-0R02J1?

A: Yes. The S4-0R02F1 is a direct substitute with identical resistance value, power rating, package configuration, and operating temperature range. The primary difference is improved tolerance specification (±1% versus ±5%).

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

A: Tolerance defines the acceptable deviation from the nominal 20 mOhms resistance value. The S4-0R02F1 at ±1% tolerance provides tighter resistance accuracy compared to the S4-0R02J1 at ±5% tolerance. Selection depends on circuit measurement precision requirements.

Q: Are the mechanical dimensions identical between S4-0R02J1 and S4-0R02F1?

A: Yes. Both parts share identical dimensions of 0.449" L x 0.252" W (11.40mm x 6.40mm) with maximum seated height of 0.197" (5.00mm), ensuring identical PCB footprint and assembly compatibility.

Q: Do both parts meet the same environmental and regulatory requirements?

A: Yes. Both the S4-0R02J1 and S4-0R02F1 are ROHS3 compliant, REACH affected, and feature identical moisture sensitivity level of 1 (Unlimited), operating temperature range of -55°C to 275°C, and all required safety features.

Q: What applications require the 20 mOhms current sense resistor specification?

A: The 20 mOhms wirewound resistor is designed for precision current measurement and monitoring applications in industrial, automotive, and power management circuits where low resistance values and high power dissipation are required.