Equivalent & Substitute Parts for BDX34D-S

Part Overview

The BDX34D-S, manufactured by Bourns Inc., is a PNP Darlington Bipolar (BJT) Transistor designed for through-hole mounting in a TO-220-3 package. It supports a maximum collector current of 10 A and a maximum collector-emitter breakdown voltage of 120 V, with a minimum current gain (hFE) of 750 at specified test conditions. This component is currently listed as Obsolete, making it essential for engineers to identify equivalent or substitute parts for ongoing and future designs, repair, or inventory management.

Substiute Parts

BDX34D-S

Bourns Inc.In Stock: 1029BDX34D-S Datasheet

Current PartRFQ

BDX34C

STMicroelectronicsIn Stock: 21382BDX34C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are selected strictly within the category of Transistors, Bipolar (BJT), based on the following key electrical and mechanical parameters:

• Transistor Type (PNP - Darlington)
• Collector Current (Ic) maximum rating
• Collector-Emitter Breakdown Voltage (Vce)
• Current Gain (hFE) at specified test conditions
• Saturation Voltage (Vce(sat)) at defined Ib and Ic
• Package / Case compatibility (TO-220-3)
• Mounting Type (Through Hole)
• RoHS and MSL compliance as specified

Only substitute components matching these listed parameters are considered suitable substitutes for BDX34D-S within engineering applications.

Parameter Comparison

Engineering Selection Recommendations

When selecting substitute transistors for BDX34D-S, only parts with a matching product category, equivalent transistor type, comparable electrical ratings, identical mechanical package, and RoHS/MSL compliance should be considered. BDX34C from STMicroelectronics is listed as an active part, while BDX34D-S is obsolete, which is pertinent when managing component obsolescence and maintaining RoHS compliance.

Frequently Asked Questions (FAQ)

Q1: What are the main criteria for substituting a BDX34D-S transistor?
A1: Substitution is based on matching transistor type (PNP - Darlington), collector current rating, breakdown voltage, current gain, saturation voltage, mounting type, package, RoHS status, and MSL.

Q2: Does BDX34C fit mechanically in designs using BDX34D-S?
A2: Yes. Both BDX34D-S and BDX34C use the TO-220-3 package and through-hole mounting.

Q3: Are there differences in electrical ratings to consider?
A3: BDX34D-S has a collector-emitter breakdown voltage of 120 V, while BDX34C lists 100 V. All other key electrical limits including collector current and current gain are equivalent.

Q4: Is compliance with RoHS and MSL standards maintained?
A4: Both BDX34D-S and BDX34C are ROHS3 Compliant with an unlimited Moisture Sensitivity Level (MSL 1).

Q5: Can BDX34C be used in existing BDX34D-S assemblies based on pinout and package?
A5: Yes. Pin configuration and mechanical form factor are identical for both parts, facilitating physical substitution within the same footprint.