TIP141T Equivalent & Substitute Parts

Part Overview

The TIP141T is an NPN Darlington bipolar junction transistor manufactured by onsemi, rated for 80 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 active equivalent and substitute parts for ongoing design requirements and procurement continuity. Substitute parts must maintain electrical compatibility within the specified parameter ranges while meeting current manufacturing and compliance standards.

Substiute Parts

TIP141T

onsemiIn Stock: 2227TIP141T Datasheet

Current PartRFQ

2N6388G

onsemiIn Stock: 12342N6388G Datasheet

SimilarRFQ

BDX33BG

onsemiIn Stock: 1239BDX33BG Datasheet

SimilarRFQ

TIP142T

STMicroelectronicsIn Stock: 21597TIP142T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP141T is determined by equivalence in the following critical parameters: NPN Darlington transistor topology, maximum collector current of 10 A, collector-emitter breakdown voltage rating, power dissipation capability, DC current gain characteristics, and TO-220-3 through-hole package configuration. Substitute parts must satisfy all electrical specifications within the defined operating conditions. The following substitute parts are grouped based on their ability to meet these requirements:

Group 1 - Direct Electrical Equivalents (80 V Rating):

• 2N6388G (onsemi)
• BDX33BG (onsemi)

Group 2 - Enhanced Voltage Rating (100 V Rating):

• TIP142T (STMicroelectronics)

Parameter Comparison

Engineering Selection Recommendations

TIP142T (STMicroelectronics) is the primary substitute for the obsolete TIP141T. This part maintains identical electrical characteristics at the specified operating points (DC current gain of 1000 @ 5A, 4V; Vce saturation of 3 V @ 40mA, 10A; power rating of 80 W) while providing an enhanced collector-emitter breakdown voltage rating of 100 V compared to the original 80 V specification. The TIP142T is manufactured by STMicroelectronics, carries active product status, and holds ROHS3 compliance certification. This part is suitable for direct replacement in applications where the original 80 V rating is adequate, with the additional voltage margin providing enhanced reliability in transient conditions.

BDX33BG (onsemi) serves as an alternative substitute within the onsemi product family. This part maintains the 80 V collector-emitter breakdown voltage and 10 A collector current rating with a 70 W power dissipation capability. The BDX33BG exhibits a lower DC current gain minimum of 750 @ 3A, 3V and reduced collector cutoff current of 500 µA. This part is suitable for applications where the lower current gain and reduced leakage characteristics are compatible with circuit design requirements. The BDX33BG is active, ROHS3 compliant, and available in high inventory quantities.

2N6388G (onsemi) is not recommended as a substitute due to insufficient power dissipation rating of 2 W, which is substantially below the original TIP141T specification of 80 W. Although this part maintains the 80 V voltage rating and 10 A current rating, the power limitation restricts its application to low-power switching scenarios only.

Frequently Asked Questions (FAQ)

Q: Can the TIP142T directly replace the TIP141T in all applications?

A: The TIP142T is electrically compatible with the TIP141T for applications operating at or below 80 V. The TIP142T provides a 100 V collector-emitter breakdown voltage rating, which exceeds the original specification. Both parts maintain identical DC current gain (1000 @ 5A, 4V), saturation voltage (3 V @ 40mA, 10A), and power dissipation (80 W) characteristics. The TO-220-3 package pinout is identical. Substitution is valid for direct replacement.

Q: What is the primary limitation of the 2N6388G as a substitute?

A: The 2N6388G is limited by its maximum power dissipation rating of 2 W, which is insufficient for applications requiring the full 80 W capability of the TIP141T. This part is suitable only for low-power switching applications where power dissipation remains below 2 W.

Q: How does the BDX33BG differ from the TIP141T in terms of current gain?

A: The BDX33BG specifies a minimum DC current gain of 750 @ 3A, 3V, compared to the TIP141T specification of 1000 @ 5A, 4V. The BDX33BG exhibits lower current gain at lower collector current levels. Circuit designs dependent on high current gain at 5 A collector current should verify compatibility with the BDX33BG characteristics.

Q: Are all substitute parts available in the same package configuration?

A: All substitute parts (2N6388G, BDX33BG, and TIP142T) are manufactured in the TO-220-3 through-hole package. Mechanical and thermal interface compatibility is maintained across all substitutes.

Q: What compliance certifications apply to the substitute parts?

A: The TIP142T, BDX33BG, and 2N6388G all hold ROHS3 compliance certification. All parts are REACH unaffected and carry EAR99 ECCN classification. The TIP141T compliance status is not specified in the provided data.

Q: Which substitute part offers the best inventory availability?

A: The TIP142T (STMicroelectronics) is available in the highest quantity at 21,570 pieces in stock, followed by 2N6388G at 1,218 pieces and BDX33BG at 1,162 pieces.