Equivalent & Substitute Parts for S3-0R02J8

Part Overview

The S3-0R02J8 is a 20 mOhms ±5% 3W wirewound chip resistor manufactured by Riedon in the 6327 J-Lead package. 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 suitable for demanding industrial and automotive environments. As an active product with 936 units in stock, alternative parts may be required for applications demanding tighter tolerance specifications or inventory optimization.

Substiute Parts

S3-0R02J8

RiedonIn Stock: 1003S3-0R02J8 Datasheet

Current PartRFQ

S3-0R02F2

RiedonIn Stock: 1244S3-0R02F2 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S3-0R02J8 is determined by the following critical parameters that must remain constant:

• Resistance value: 20 mOhms (exact match required)
• Power rating: 3W (exact match required)
• Package / Case: 6327 J-Lead (exact match required)
• Operating temperature range: -55°C to 275°C (exact match required)
• Physical dimensions: 0.626" L x 0.272" W, height 0.268" max (exact match required)
• Composition: Wirewound (exact match required)

The S3-0R02F2 qualifies as a direct substitute because it maintains all critical parameters while offering an upgrade in tolerance specification from ±5% to ±1%. This tighter tolerance is compatible with applications originally designed for the S3-0R02J8 and provides enhanced measurement accuracy without requiring circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

Both the S3-0R02J8 and S3-0R02F2 are active products with full ROHS3 compliance and REACH compliance status. The S3-0R02F2 represents an upgrade path for applications requiring tighter tolerance control, as it maintains identical mechanical, thermal, and electrical characteristics while reducing tolerance from ±5% to ±1%. Selection between these parts should be based on the tolerance requirements specified in the circuit design. The S3-0R02F2 offers higher inventory availability at 1229 units compared to 936 units for the S3-0R02J8.

Frequently Asked Questions (FAQ)

Q: Can the S3-0R02F2 be used as a direct replacement for the S3-0R02J8?

A: Yes. The S3-0R02F2 is a direct substitute with identical resistance, power rating, package, dimensions, and operating temperature range. The only difference is improved tolerance specification (±1% versus ±5%).

Q: What are the key parameters that determine substitutability for this resistor?

A: Substitutability is determined by exact matching of resistance value (20 mOhms), power rating (3W), package type (6327 J-Lead), physical dimensions (0.626" L x 0.272" W, 0.268" max height), and operating temperature range (-55°C to 275°C). Tolerance may be tightened without affecting compatibility.

Q: Are there any mechanical compatibility concerns when substituting these parts?

A: No. Both parts share identical package specifications, footprint dimensions, and lead configuration. PCB layout and assembly processes require no modification.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the S3-0R02J8 and S3-0R02F2 are ROHS3 compliant and REACH affected, meeting identical regulatory requirements.

Q: Which part should be selected for new designs?

A: For new designs, the S3-0R02F2 is the preferred choice due to its tighter ±1% tolerance specification, which provides superior measurement accuracy in current sense applications. Both parts are active products with adequate inventory.