TIP33C Equivalent & Substitute Parts Reference

Part Overview

The TIP33C is an NPN bipolar junction transistor manufactured by Central Semiconductor Corp, designed for general-purpose switching and amplification applications. It features a maximum collector current of 10 A, collector-emitter breakdown voltage of 100 V, and maximum power dissipation of 80 W in a TO-218 package configuration. The TIP33C is classified as obsolete, making identification of functionally equivalent active alternatives necessary for ongoing design support and procurement continuity.

Substiute Parts

TIP33C

Central Semiconductor CorpIn Stock: 33077TIP33C Datasheet

Current PartRFQ

TIP33CG

onsemiIn Stock: 1110TIP33CG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP33C is determined by electrical parameter equivalence across the following criteria:

Electrical Equivalence Requirements:

• Transistor polarity: NPN configuration
• Maximum collector current: 10 A
• Collector-emitter breakdown voltage: 100 V
• Maximum power dissipation: 80 W
• Transition frequency: 3 MHz
• Operating temperature range: -65°C to 150°C

Mechanical Compatibility:

• Through-hole mounting technology
• Package form factor compatibility

The TIP33CG, manufactured by onsemi, satisfies all electrical equivalence parameters while offering active product status and improved compliance certifications. Package differences (TO-247-3 versus TO-218-3) represent the primary mechanical distinction and require PCB layout verification during substitution.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TIP33C is classified as obsolete. The TIP33CG maintains active product status with onsemi, ensuring continued availability, technical support, and manufacturing consistency.

Compliance Status: The TIP33CG achieves ROHS3 compliance, whereas the TIP33C is non-compliant. For applications subject to RoHS directives or customer compliance requirements, the TIP33CG is the appropriate selection.

REACH Status: Both parts maintain REACH Unaffected classification, indicating no regulatory restriction on use.

Package Consideration: The primary distinction between TIP33C and TIP33CG is the package form factor: TO-218-3 versus TO-247-3. Both are through-hole configurations with different pin layouts and thermal characteristics. PCB footprint redesign is required for substitution.

Electrical Equivalence: All critical electrical parameters—collector current, breakdown voltage, power dissipation, and frequency response—are identical between the two parts, confirming functional interchangeability in circuit operation.

Frequently Asked Questions (FAQ)

Q: Can TIP33CG directly replace TIP33C without circuit modification?

A: Electrical parameters are equivalent. However, the package change from TO-218-3 to TO-247-3 requires PCB footprint modification. Pin configuration and mounting hole positions differ between these packages.

Q: What is the primary reason to substitute TIP33C with TIP33CG?

A: The TIP33C is obsolete. The TIP33CG is an active product from onsemi with identical electrical specifications, ensuring long-term availability and supply chain continuity.

Q: Are there thermal performance differences between TO-218-3 and TO-247-3 packages?

A: Both packages are rated for 80 W maximum power dissipation. Thermal performance depends on PCB copper area, heatsink attachment, and thermal interface materials. Consult package datasheets for thermal resistance specifications.

Q: Does the RoHS compliance difference affect circuit performance?

A: RoHS compliance affects material composition and environmental regulatory acceptance, not electrical performance. The TIP33CG's ROHS3 compliance is required for applications in regulated markets.

Q: Are DC current gain specifications identical?

A: DC current gain (hFE) specifications differ: TIP33C specifies 100 @ 3A, 4V; TIP33CG specifies 20 @ 3A, 4V. Verify circuit bias network compatibility with the lower hFE value of TIP33CG.

Q: What is the base product number relationship?

A: TIP33CG carries base product number TIP33, indicating it is part of the TIP33 family. The TIP33C and TIP33CG are variants within this family with different package and compliance specifications.