SL32 2R025 Inrush Current Limiter - Equivalent & Substitute Parts

Part Overview

The SL32 2R025 is an inrush current limiter manufactured by Ametherm, part of the BigAMP series. This component is designed to limit inrush current in power supply circuits with a nominal resistance of 2 Ohms at ±20% tolerance and a steady-state current rating of 25 A. The part is currently active in production with full inventory availability. Alternative models may be required due to inventory constraints, application-specific current requirements, or supply chain considerations.

Substiute Parts

SL32 2R025

AmethermIn Stock: 10157SL32 2R025 Datasheet

Current PartRFQ

SL32 2R023-B

AmethermIn Stock: 3357SL32 2R023-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SL32 2R023-B qualifies as a substitute for the SL32 2R025 based on the following electrical and mechanical parameters:

• Identical resistance value: 2 Ohms at ±20% tolerance
• Identical resistance at current: 20 mOhms
• Identical physical dimensions: 1.220" (31.00mm) diameter and 0.307" (7.80mm) lead spacing
• Identical series classification: BigAMP
• Identical compliance certifications: ROHS3 Compliant, REACH Unaffected

The primary difference is the steady-state current rating: the SL32 2R023-B is rated for 23 A maximum, compared to 25 A for the SL32 2R025. This substitution is valid for applications where the required steady-state current does not exceed 23 A.

Parameter Comparison

Engineering Selection Recommendations

Both the SL32 2R025 and SL32 2R023-B are active production components with ROHS3 compliance and REACH unaffected status. The SL32 2R025 is the primary choice when steady-state current requirements reach 25 A. The SL32 2R023-B is suitable for applications with steady-state current requirements of 23 A or less. Both components maintain identical electrical characteristics at their rated currents and share identical mechanical form factors, enabling direct substitution within the specified current envelope. Selection between these parts depends solely on the application's maximum steady-state current requirement.

Frequently Asked Questions (FAQ)

Q: Can the SL32 2R023-B replace the SL32 2R025 in all applications?

A: The SL32 2R023-B can replace the SL32 2R025 only in applications where the steady-state current requirement does not exceed 23 A. If your application requires steady-state currents between 23 A and 25 A, the SL32 2R025 is required.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts have a diameter of 1.220" (31.00mm) and lead spacing of 0.307" (7.80mm), enabling direct mechanical substitution.

Q: Do both parts meet the same compliance standards?

A: Both parts are ROHS3 compliant and REACH unaffected. The SL32 2R025 carries CSA and UR approval, while the SL32 2R023-B carries CSA approval.

Q: What is the resistance value at operating current for both parts?

A: Both the SL32 2R025 and SL32 2R023-B have a resistance of 20 mOhms at their respective rated currents.

Q: Are there inventory differences between these parts?

A: Yes. The SL32 2R025 has 10100 pieces in stock, while the SL32 2R023-B has 3278 pieces in stock.