TIP147T Equivalent & Substitute Parts

Part Overview

The TIP147T is a PNP Darlington bipolar junction transistor manufactured by onsemi, rated for 100 V collector-emitter breakdown voltage and 10 A maximum collector current in a TO-220-3 through-hole package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. Active alternatives with identical or superior electrical characteristics are available from multiple manufacturers.

Substiute Parts

TIP147T

onsemiIn Stock: 21475TIP147T Datasheet

Current PartRFQ

TIP147G

onsemiIn Stock: 1350TIP147G Datasheet

MFR RecommendedRFQ

TIP147T

STMicroelectronicsIn Stock: 21436TIP147T Datasheet

DirectRFQ

BDW47G

onsemiIn Stock: 3963BDW47G Datasheet

SimilarRFQ

BDX34C

STMicroelectronicsIn Stock: 21382BDX34C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP147T is determined by equivalence in the following critical parameters: transistor type (PNP Darlington), maximum collector current (10 A minimum), collector-emitter breakdown voltage (100 V minimum), DC current gain (hFE ≥ 1000 @ 5 A, 4 V), and through-hole mounting compatibility. Package variations (TO-220-3, TO-247-3) are acceptable provided mechanical fit and thermal characteristics meet application requirements. Vce saturation, collector cutoff current, and power dissipation ratings establish performance boundaries for direct substitution.

Substitute parts are grouped as follows:

Direct Equivalents (Identical Electrical Specifications): Parts maintaining all critical electrical parameters and compatible packaging.

Functional Equivalents (Enhanced Specifications): Parts exceeding minimum requirements in power rating, current capacity, or temperature range while maintaining core electrical characteristics.

Similar Alternatives (Modified Specifications): Parts with variations in secondary parameters that require application-level verification.

Parameter Comparison

Engineering Selection Recommendations

TIP147G (onsemi): This part is the manufacturer-recommended substitute. It maintains identical electrical specifications to the TIP147T while offering enhanced power dissipation (125 W versus 80 W) and extended operating temperature range (−65 to 150 °C). The TO-247-3 package provides superior thermal performance through increased lead surface area. Product status is active with full manufacturer support. This substitute is suitable for applications requiring improved thermal management or extended temperature operation.

TIP147T (STMicroelectronics): This cross-manufacturer equivalent provides direct electrical and mechanical compatibility with identical TO-220-3 packaging. Electrical parameters match the original specification exactly. Power rating is marginally higher at 90 W. Product status is active. This substitute is appropriate for applications requiring identical form factor and thermal characteristics.

BDX34C (STMicroelectronics): This part maintains 10 A collector current and 100 V breakdown voltage in TO-220-3 packaging with active product status. However, it exhibits reduced DC current gain (750 @ 3 A, 3 V versus 1000 @ 5 A, 4 V) and lower power rating (70 W). Vce saturation is improved (2.5 V @ 6 mA, 3 A). This substitute is suitable only for applications where the lower current gain and power rating are acceptable.

BDW47G (onsemi): This part offers enhanced collector current (15 A) and extended temperature range (−55 to 150 °C) but is classified as obsolete. It is not recommended for new designs requiring active manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can TIP147G replace TIP147T in existing designs?

A: Yes. TIP147G maintains all critical electrical specifications (10 A collector current, 100 V breakdown voltage, 1000 hFE minimum) and is the manufacturer-recommended substitute. The TO-247-3 package is mechanically compatible with TO-220-3 mounting when appropriate mechanical adaptation is provided. Enhanced power rating (125 W) and extended temperature range provide design margin.

Q: What is the difference between TO-220-3 and TO-247-3 packages?

A: Both are through-hole packages with identical pin configuration and electrical compatibility. TO-247-3 features larger lead surface area and improved thermal characteristics, resulting in lower junction temperature under equivalent power dissipation. Mechanical mounting dimensions differ; PCB layout and heatsink interfaces require verification for compatibility.

Q: Is BDX34C a suitable replacement for TIP147T?

A: BDX34C is functionally compatible but exhibits reduced performance in specific parameters. DC current gain is 750 @ 3 A, 3 V (versus 1000 @ 5 A, 4 V for TIP147T), and maximum power dissipation is 70 W (versus 80 W). This substitute is acceptable only when application requirements do not demand the higher current gain or power rating of the original part.

Q: Why is TIP147T (onsemi) classified as obsolete?

A: Product obsolescence is determined by manufacturer discontinuation. TIP147G (onsemi) is the active replacement offering superior specifications. For new designs, TIP147G is the preferred selection.

Q: Can BDW47G be used as a substitute?

A: BDW47G is classified as obsolete and is not recommended for new designs or long-term procurement. Although it offers enhanced collector current (15 A), the lack of active manufacturer support and product discontinuation status make it unsuitable for applications requiring component availability and technical support.

Q: What are the compliance certifications for substitute parts?

A: All substitute parts listed (TIP147G, TIP147T STMicroelectronics, BDX34C) are ROHS3 compliant and REACH unaffected, matching the compliance profile of the original TIP147T.