TIPL791A-S Equivalent & Substitute Parts Reference

Part Overview

The TIPL791A-S is a Bourns Inc. NPN Darlington bipolar junction transistor (BJT) designed for high voltage and current applications. It features a 450 V collector-emitter breakdown voltage, 4 A maximum collector current, and 75 W power dissipation in a TO-220-3 through-hole package. This product is currently classified as obsolete. Sourcing alternative models is necessary to maintain reliable supply and ongoing hardware compatibility.

Substiute Parts

TIPL791A-S

Bourns Inc.In Stock: 874TIPL791A-S Datasheet

Current PartRFQ

BUL58D

STMicroelectronicsIn Stock: 34106BUL58D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute relationships for transistors in the Bipolar (BJT) category are determined strictly by the following parameters: transistor type, maximum collector-emitter breakdown voltage, maximum collector current, maximum power dissipation, and mechanical package/case. The mounting type and RoHS compliance status are also included to ensure mechanical and regulatory compatibility. Only parts matching or exceeding these specifications are grouped as substitutes.

Parameter Comparison

Engineering Selection Recommendations

The TIPL791A-S transistor is obsolete. The BUL58D, an active NPN transistor with matching or higher ratings in voltage, current, and power, is ROHS3 compliant and available in a TO-220-3 through-hole package, meeting regulatory and mechanical requirements as presented.

Frequently Asked Questions (FAQ)

Q: What parameters are critical when selecting a substitute for TIPL791A-S?
A: Substitute selection is based strictly on transistor type, voltage—collector emitter breakdown (max), collector current (max), power dissipation (max), package/case, and compliance status.

Q: Is package compatibility important for substitution?
A: Yes, the TO-220-3 through-hole package must be matched to ensure the mechanical fit and soldering compatibility.

Q: Are there compliance considerations in choosing substitutes?
A: Substitute parts must have the same RoHS compliance status to satisfy regulatory requirements.

Q: Must the substitute have the same product status?
A: Preference is given to active-status components to ensure continued availability.

Q: Can the substitute have higher electrical ratings than the original?
A: Yes, as long as the key electrical and mechanical specifications are matched or exceeded, substitution is possible.