TIP33C Equivalent & Substitute Parts

Part Overview

The TIP33C is a through-hole NPN bipolar junction transistor manufactured by STMicroelectronics, rated for 100 V collector-emitter breakdown voltage and 10 A maximum collector current in a TO-247-3 package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. Active alternatives with identical or enhanced electrical specifications are available from current manufacturers.

Substiute Parts

TIP33C

STMicroelectronicsIn Stock: 33007TIP33C Datasheet

Current PartRFQ

TIP33CG

onsemiIn Stock: 1110TIP33CG Datasheet

DirectRFQ

MJE4343G

onsemiIn Stock: 869MJE4343G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TIP33C are classified into two categories based on electrical parameter alignment:

Direct Equivalent (TIP33CG): This substitute maintains identical electrical specifications across all critical parameters: 10 A maximum collector current, 100 V collector-emitter breakdown voltage, 80 W maximum power dissipation, and 3 MHz transition frequency. The TIP33CG is manufactured by onsemi and carries active product status with ROHS3 compliance. Packaging is supplied in tube format rather than the original specification, and operating temperature range is extended to -65°C to 150°C.

Similar Substitute (MJE4343G): This substitute provides enhanced electrical performance with higher ratings: 16 A maximum collector current, 160 V collector-emitter breakdown voltage, and 125 W maximum power dissipation. The transition frequency is reduced to 1 MHz. The MJE4343G is also manufactured by onsemi with active product status and ROHS3 compliance. This device is suitable for applications requiring higher voltage or current margins within the same TO-247-3 package footprint.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The TIP33CG is the appropriate selection when the original TIP33C specification must be maintained. This substitute provides identical electrical performance across all critical parameters and is manufactured by onsemi with active product status. The extended operating temperature range (-65°C to 150°C) provides additional design margin compared to the original specification. ROHS3 compliance and REACH unaffected status align with current regulatory requirements.

For Enhanced Performance Applications: The MJE4343G is suitable for applications where higher voltage or current ratings provide design margin or where the application can tolerate the reduced transition frequency (1 MHz versus 3 MHz). This device offers 60% higher maximum collector current (16 A versus 10 A) and 60% higher maximum voltage rating (160 V versus 100 V), with 56% greater power dissipation capability (125 W versus 80 W). The MJE4343G maintains the same TO-247-3 package footprint and through-hole mounting configuration, ensuring mechanical compatibility. ROHS3 compliance and REACH unaffected status are maintained.

Both substitute parts are manufactured by onsemi with active product status, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the TIP33CG be used as a direct replacement for the TIP33C?

A: Yes. The TIP33CG maintains identical electrical specifications for maximum collector current (10 A), collector-emitter breakdown voltage (100 V), maximum power dissipation (80 W), and transition frequency (3 MHz). Both devices use the TO-247-3 package with through-hole mounting. The TIP33CG has active product status from onsemi, ensuring availability.

Q: What is the primary difference between the TIP33CG and MJE4343G?

A: The MJE4343G provides enhanced electrical ratings: 16 A maximum collector current (versus 10 A), 160 V collector-emitter breakdown voltage (versus 100 V), and 125 W maximum power dissipation (versus 80 W). The transition frequency is lower at 1 MHz compared to 3 MHz. Both devices share the same TO-247-3 package and through-hole mounting.

Q: Are there packaging differences between the TIP33C and its substitutes?

A: The TIP33C and TIP33CG both use the TO-247-3 package with through-hole mounting. The TIP33CG is supplied in tube packaging, while the original TIP33C packaging format is not specified in the available data. The MJE4343G also uses TO-247-3 package with through-hole mounting and tube packaging.

Q: Can the MJE4343G be used in applications designed for the TIP33C?

A: The MJE4343G can be used in applications designed for the TIP33C provided the circuit design accommodates the lower transition frequency (1 MHz versus 3 MHz). The higher electrical ratings (16 A, 160 V, 125 W) are backward compatible with designs requiring 10 A, 100 V, and 80 W specifications. Mechanical compatibility is maintained through identical TO-247-3 package and through-hole mounting.

Q: What is the compliance status of the substitute parts?

A: Both TIP33CG and MJE4343G are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why is the TIP33C classified as obsolete?

A: The TIP33C is listed as obsolete by STMicroelectronics. Active alternatives with identical or enhanced specifications are available from onsemi, providing supply chain continuity for applications requiring this device class.