TRA 1-2421 Equivalent & Substitute Parts Reference

Part Overview

The TRA 1-2421 from Traco Power is an isolated module DC-DC converter delivering dual outputs of +5V and -5V at 100mA each, with a total power capacity of 1W. It features a 21.6V to 26.4V input voltage range and 1kV isolation, designed for ITE (Commercial) applications. The product status is marked as Not For New Designs, indicating that it is necessary to identify substitute models for ongoing or new projects requiring equivalent performance and form factor.

Substiute Parts

TRA 1-2421

Traco PowerIn Stock: 1068TRA 1-2421 Datasheet

Current PartRFQ

IQ2405S

XP PowerIn Stock: 999IQ2405S Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is based strictly on the following allowed parameters: module type, number of outputs, input voltage range, output voltages, output current, output power, isolation voltage, primary applications, and mounting/package format. Both main and substitute parts must maintain equivalent electrical characteristics and packaging constraints for direct replacement.

Key parameters defining interchangeability:

• Isolated module type
• Dual outputs of +5V and -5V at 100mA each
• 1W total output power
• Input voltage range: 21.6V to 26.4V
• Isolation voltage: 1 kV
• Through hole mounting
• Similar SIP module packaging and dimensions
• Compliance with ROHS3

Parameter Comparison

Engineering Selection Recommendations

TRA 1-2421 is identified as Not For New Designs. Substitute selection may be based on the product status and compliance features. Both TRA 1-2421 and IQ2405S are ROHS3 compliant and support ITE (Commercial) applications. IQ2405S is listed as Active, indicating suitability for new and ongoing designs, while TRA 1-2421 is only suitable for existing designs.

Frequently Asked Questions (FAQ)

Q: What are the primary criteria for substituting TRA 1-2421 in a DC-DC converter application?
A: Substitution requires matching type (isolated module), number and value of outputs, input and output voltage ranges, output current, isolation voltage, package type, and RoHS compliance.

Q: Are there dimensional or mechanical differences between TRA 1-2421 and IQ2405S?
A: Both parts are SIP modules with similar dimensions. IQ2405S has a 7-SIP, 6-lead package and a slightly narrower width (0.24" vs 0.28"), but maintains the same length and comparable height.

Q: Are there compliance differences that impact substitute suitability?
A: Both part numbers are ROHS3 compliant and marked suitable for ITE (Commercial) applications.

Q: How does product status affect substitution?
A: TRA 1-2421 is Not For New Designs, so IQ2405S, marked as Active, may be selected for ongoing and future design requirements within the constraints of the specified parameters.