SL15 16004 Inrush Current Limiter - Equivalent & Substitute Parts

Part Overview

The SL15 16004 is an inrush current limiter manufactured by Ametherm, designed to limit inrush current in power supply circuits and similar applications. This component features a resistance of 16 Ohms at ±20% tolerance with a maximum steady-state current rating of 4.4 A and a physical diameter of 0.591" (15.00mm). The part is currently active in production and maintains full ROHS3 compliance with CSA approval. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this product category.

Substiute Parts

SL15 16004

AmethermIn Stock: 1027SL15 16004 Datasheet

Current PartRFQ

B57238S0160M000

EPCOS - TDK ElectronicsIn Stock: 803B57238S0160M000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for inrush current limiters is determined by the following critical parameters:

• Resistance value and tolerance band (must match or fall within acceptable operating range)
• Maximum steady-state current rating (substitute must meet or exceed application requirements)
• Physical dimensions including diameter and lead spacing (must accommodate PCB layout and thermal management)
• Regulatory compliance and certifications (RoHS status and approval agencies)

The B57238S0160M000 qualifies as a substitute based on matching resistance (16 Ohms ±20%), comparable steady-state current capability (4 A), and equivalent regulatory compliance (ROHS3). Physical dimensions differ slightly (0.630" diameter vs. 0.591"), requiring verification of mechanical fit in the target application.

Parameter Comparison

Engineering Selection Recommendations

Both parts maintain active production status and full ROHS3 compliance. The SL15 16004 provides a higher steady-state current rating of 4.4 A compared to the B57238S0160M000 at 4 A. Selection between these parts should be based on:

• Application current requirements: If steady-state current exceeds 4 A, the SL15 16004 is required
• PCB layout constraints: The B57238S0160M000 has a larger diameter (16mm vs. 15mm), which may affect board space availability
• Certification requirements: The SL15 16004 carries CSA approval while the B57238S0160M000 carries UL approval; verify which certification is required for your application

Frequently Asked Questions (FAQ)

Q: Can the B57238S0160M000 be used as a direct replacement for the SL15 16004?

A: Electrical substitution is possible when application steady-state current does not exceed 4 A. Mechanical fit must be verified due to the 1mm larger diameter of the B57238S0160M000. Certification requirements must also be confirmed.

Q: What is the significance of the resistance tolerance ±20%?

A: Both parts operate within the same ±20% tolerance band at 25°C. This tolerance defines the acceptable resistance range for component selection and must be considered in circuit design calculations.

Q: How do the physical dimensions affect substitution?

A: The SL15 16004 measures 0.591" (15.00mm) in diameter with 0.307" (7.80mm) lead spacing, while the B57238S0160M000 measures 0.630" (16.00mm) in diameter with 0.295" (7.50mm) lead spacing. These differences may impact PCB layout, thermal dissipation, and mechanical mounting. Physical fit verification is required before substitution.

Q: Are there differences in regulatory compliance between these parts?

A: The SL15 16004 carries CSA approval while the B57238S0160M000 carries UL approval. Both are ROHS3 compliant and REACH unaffected. Verify which certification standard is required for your specific application or end market.

Q: What is the impact of the 0.4 A difference in steady-state current rating?

A: The SL15 16004 is rated for 4.4 A maximum steady-state current while the B57238S0160M000 is rated for 4 A. If your application requires continuous current above 4 A, the B57238S0160M000 cannot be used as a substitute.