ISL2409A Equivalent & Substitute Parts Reference

Part Overview

ISL2409A is an isolated DC-DC converter manufactured by XP Power, providing a single 9V output at up to 167mA, with an input voltage range of 9V–36V and 1.5kV isolation. It is supplied in a 16-SMD module package and supports ITE (Commercial) applications, with SCP protection and an operating temperature range of -40°C to 85°C. The ISL2409A is currently listed as obsolete, making substitution necessary for ongoing designs, maintenance, and replacement requirements.

Substiute Parts

ISL2409A

XP PowerIn Stock: 1075ISL2409A Datasheet

Current PartRFQ

PQME3-D24-S9-M

CUI Inc.In Stock: 1126PQME3-D24-S9-M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute grouping is based strictly on key electrical and mechanical parameters provided. Substitution is considered only where:

• Input voltage range, output voltage, isolation rating, and number of outputs match the main part.
• Package type is surface mount.
• Application category and RoHS compliance are consistent. These factors ensure functional compatibility within the DC-DC converter product category for ITE (Commercial) applications.

Parameter Comparison

Engineering Selection Recommendations

The ISL2409A is obsolete. The substitute DC-DC converter PQME3-D24-S9-M is active and RoHS compliant. Both parts are suitable for ITE (Commercial) applications and feature surface mount packaging. The substitute is UL approved according to standard number 60950-1. Selection between these models is determined by product status, RoHS compliance, and certification documentation.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for DC-DC converter substitution?
A1: Substitutes are selected based on matching input voltage range, output voltage, output type, isolation voltage, mounting type, application, efficiency, and RoHS compliance.

Q2: Is the package format compatible between ISL2409A and PQME3-D24-S9-M?
A2: Both use surface mount SMD modules; however, lead count and exact physical dimensions vary. Mechanical compatibility should be checked based on documented size and lead configuration.

Q3: Does the substitute support ITE (Commercial) applications?
A3: Both ISL2409A and PQME3-D24-S9-M are rated for ITE (Commercial) use according to the provided parameters.

Q4: Are there any certification differences?
A4: PQME3-D24-S9-M is UL approved per standard 60950-1; ISL2409A does not list a specific approval agency or standard.

Q5: Are both models RoHS compliant?
A5: The main part is ROHS3 compliant; the substitute is RoHS compliant. Both meet environmental compliance requirements as specified.

Q6: Is there a difference in output power or current?
A6: ISL2409A provides 1.5W and 167mA, while PQME3-D24-S9-M provides up to 3W and 333mA, with matching output voltage.

Q7: What should be noted about operating temperature?
A7: Both parts are rated for -40°C to 85°C; the substitute specifies operation with derating at high temperatures.