Equivalent & Substitute Parts for S4-2K2J8

Part Overview

The S4-2K2J8 is a 2.2 kOhms ±5% 2W wirewound chip resistor in 4525 J-Lead package manufactured by Riedon. 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). Alternative models may be required when tighter tolerance specifications or specific inventory availability is needed.

Substiute Parts

S4-2K2J8

RiedonIn Stock: 684S4-2K2J8 Datasheet

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S4-2K2F1

RiedonIn Stock: 1220S4-2K2F1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the S4-2K2J8 is determined by the following critical parameters that must remain constant:

• Resistance value: 2.2 kOhms (exact match required)
• Power rating: 2W (exact match required)
• Package / Case: 4525 J-Lead (exact match required)
• Composition: Wirewound (exact match required)
• Operating temperature range: -55°C ~ 275°C (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Features: Current Sense, Flame Proof, Moisture Resistant, Pulse Withstanding, Safety (exact match required)

The S4-2K2F1 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 does not compromise compatibility and provides improved precision for applications requiring stricter resistance accuracy.

Parameter Comparison

Engineering Selection Recommendations

Both S4-2K2J8 and S4-2K2F1 are Active products with ROHS3 compliance and REACH compliance status. The S4-2K2F1 represents an upgrade path when circuit design specifications require tolerance tighter than ±5%. Since both parts share identical mechanical dimensions, thermal characteristics, and feature sets, the S4-2K2F1 can be directly substituted in applications where the ±1% tolerance specification is beneficial or required. Selection between these parts should be based on the tolerance requirement of the specific application and component availability.

Frequently Asked Questions (FAQ)

Q: Can S4-2K2F1 be used as a direct replacement for S4-2K2J8?

A: Yes. The S4-2K2F1 is a direct substitute with identical mechanical and thermal specifications. The primary difference is improved tolerance (±1% versus ±5%), which does not create compatibility issues.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching resistance value (2.2 kOhms), power rating (2W), package type (4525 J-Lead), composition (wirewound), operating temperature range (-55°C ~ 275°C), temperature coefficient (±20ppm/°C), and feature set (current sense, flame proof, moisture resistant, pulse withstanding, safety).

Q: Are there any package or footprint differences between these parts?

A: No. Both parts use the 4525 J-Lead package with identical dimensions of 0.449" L x 0.252" W (11.40mm x 6.40mm) and maximum seated height of 0.197" (5.00mm).

Q: Do both parts meet the same compliance standards?

A: Yes. Both S4-2K2J8 and S4-2K2F1 are ROHS3 compliant, REACH affected, and carry MSL 1 (unlimited) moisture sensitivity level.

Q: What is the primary advantage of selecting S4-2K2F1 over S4-2K2J8?

A: The S4-2K2F1 provides tighter tolerance specification at ±1% compared to ±5%, enabling improved resistance accuracy for precision current sensing applications.