TIP31D-S Equivalent & Substitute Parts Reference

Part Overview

The TIP31D-S, manufactured by Bourns Inc., is a Bipolar Junction Transistor (BJT) in the NPN configuration, with a maximum collector-emitter voltage of 120 V and a maximum collector current of 3 A, housed in a TO-220 package. The product status is listed as "Obsolete." When a BJT transistor such as the TIP31D-S becomes obsolete, it is necessary to identify alternative models with equivalent electrical and mechanical characteristics to maintain device functionality and ensure continued production support.

Substiute Parts

TIP31D-S

Bourns Inc.In Stock: 936TIP31D-S Datasheet

Current PartRFQ

BD241CG

onsemiIn Stock: 93495BD241CG Datasheet

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TIP31C

Fairchild SemiconductorIn Stock: 69458TIP31C Datasheet

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TIP31CG

onsemiIn Stock: 6765TIP31CG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts are identified based on equivalent electrical and mechanical parameters explicitly provided. The following key parameters are strictly considered in determining the suitability of substitute models: Transistor Type (NPN), Collector Current (Ic max), Collector-Emitter Breakdown Voltage (Vce max), Collector Cutoff Current, DC Current Gain (hFE), Maximum Power, Mounting Type (Through Hole), Package/Case (TO-220), Supplier Device Package, and RoHS Status. Only parts matching these criteria are included as substitutes.

Parameter Comparison

Engineering Selection Recommendations

BD241CG, TIP31CG, and TIP31C are suitable substitute parts for TIP31D-S based on matching transistor type, collector current, mounting type, TO-220 package, and comparable electrical characteristics as defined in the provided parameters. Compliance is maintained for BD241CG and TIP31CG with ROHS3 certification. When selecting substitutes, preference may be given to active parts and those with verified compliance status according to the listed parameters.

Frequently Asked Questions (FAQ)

Q1: How are substitute transistors for TIP31D-S selected?
Substitute transistors are selected based on strict matching of transistor type, collector current rating, collector-emitter breakdown voltage, cutoff current, DC current gain, power rating, mounting type, package/case, and listed compliance status.

Q2: Are all substitute parts RoHS compliant?
BD241CG and TIP31CG are ROHS3 compliant. TIP31C compliance is referenced as "Vendor Undefined" based on the provided parameter.

Q3: Is the package type and footprint identical for all substitutes?
All listed substitute parts use the TO-220-3 package with through-hole mounting, matching the mechanical characteristics required for direct replacement.

Q4: What electrical ratings are most critical when substituting TIP31D-S?
The most critical parameters are transistor type (NPN), maximum collector current (3 A), breakdown voltage, collector cutoff current, and DC current gain, as well as power rating and compliance with the required mechanical format.

Q5: Can any substitute part be used in place of TIP31D-S without technical modification?
All substitutes listed match the main electrical and mechanical categories as provided. Any differences in specific parameters must be considered against the requirements of the end application as defined by the selection criteria in this reference.