Equivalent & Substitute Parts for QH03-12

Part Overview

The XP Power QH03-12 is a High Voltage - Isolated Module DC DC Converter offering 1 output at 300V, 4.167mA, with an input voltage range of 0.7V to 12V. It is classified as an ITE (Commercial) power supply, housed in a 4-DIP through-hole package. This model is listed as obsolete. Substitution is necessary to ensure ongoing availability for designs requiring identical electrical and mechanical parameters.

Substiute Parts

QH03-12

XP PowerIn Stock: 878QH03-12 Datasheet

Current PartRFQ

A03P-12

XP PowerIn Stock: 967A03P-12 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is governed strictly by identical or allowed variation in the following electrical and mechanical parameters: Manufacturer, Category, Voltage - Input (Min/Max), Voltage - Output 1, Current - Output (Max), Power (Watts), Voltage - Isolation, Number of Outputs, Applications, Features, Operating Temperature range, Mounting Type, Package / Case, Size / Dimension, RoHS Status, MSL, ECCN, and HTSUS. Only parts meeting these requirements qualify as substitutes.

Parameter Comparison

Engineering Selection Recommendations

Because QH03-12 is obsolete, selection should be based on active substitute components, RoHS3 compliance, matching ECCN, and HTSUS codes. Only parts matching the specified electrical ratings, mounting type, package style, and environmental regulations are suitable. The XP Power A03P-12 is active and meets listed compliance standards for direct substitution.

Frequently Asked Questions (FAQ)

Q: What are the strict electrical parameters required for substituting QH03-12?
A: Voltage - Input (Min/Max), Voltage - Output 1, Current - Output (Max), Power (Watts), Voltage - Isolation, Number of Outputs, and Features are the essential criteria.

Q: Can the substitute part A03P-12 be used in the same application as QH03-12?
A: Both parts are intended for ITE (Commercial) applications with proportional output, matching the application requirements.

Q: Are there differences in packaging or mounting between QH03-12 and A03P-12?
A: QH03-12 uses a 4-DIP module; A03P-12 uses a 5-DIP module with different size dimensions. Mounting type is identical (Through Hole).

Q: Is the substitute part compliant with RoHS and MSL requirements?
A: Both QH03-12 and A03P-12 are ROHS3 compliant and have Moisture Sensitivity Level 1 (Unlimited).

Q: What are the implications of the difference in output current and power?
A: QH03-12 specifies 4.167mA and 1.25W, while A03P-12 specifies 3.33mA and 1W. Selection must consider these values as strictly specified.