TIP42G Equivalent & Substitute Parts

Part Overview

The TIP42G is a PNP bipolar junction transistor manufactured by onsemi, rated for 40 V collector-emitter breakdown voltage and 6 A maximum collector current in a TO-220-3 through-hole package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. Equivalent and substitute parts are necessary to ensure design continuity and long-term component sourcing for applications requiring PNP transistor functionality with compatible electrical and mechanical specifications.

Substiute Parts

TIP42G

onsemiIn Stock: 3248TIP42G Datasheet

Current PartRFQ

TIP42CG

onsemiIn Stock: 1494TIP42CG Datasheet

MFR RecommendedRFQ

TIP42A

NTE Electronics, IncIn Stock: 14388TIP42A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP42G is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Transistor Type: PNP (must match)
• Package / Case: TO-220-3 (must match for mechanical compatibility)
• Mounting Type: Through Hole (must match)
• Current - Collector (Ic) (Max): 6 A (must match or exceed)
• Voltage - Collector Emitter Breakdown (Max): Must equal or exceed 40 V
• Vce Saturation (Max) @ Ib, Ic: 1.5V @ 600mA, 6A (must match)
• Current - Collector Cutoff (Max): 700µA (must match)
• DC Current Gain (hFE) (Min) @ Ic, Vce: 15 @ 3A, 4V (must match or exceed)
• Power - Max: 2 W (must match or exceed)
• Operating Temperature: -65°C to 150°C (TJ) (must match or exceed range)

Substitute parts are grouped into two categories: MFR Recommended (manufacturer-endorsed direct substitutes) and Similar (functionally equivalent alternatives with minor parameter variations).

Parameter Comparison

Engineering Selection Recommendations

TIP42CG (MFR Recommended Substitute): The TIP42CG is the manufacturer-endorsed equivalent for the TIP42G. Both devices are produced by onsemi and share identical electrical characteristics across all critical parameters. The TIP42CG features a higher voltage rating (100 V versus 40 V), providing enhanced design margin for applications subject to voltage transients or overshoot conditions. The TIP42CG maintains active product status with established supply chain availability (1440 pcs in stock) and carries ROHS3 compliance certification. This part is the primary selection for direct replacement in new designs or production continuity.

TIP42A (Similar Substitute): The TIP42A, manufactured by NTE Electronics, Inc, provides functional equivalence with a 60 V voltage rating positioned between the TIP42G and TIP42CG. All critical electrical parameters match the TIP42G specification. However, the TIP42A carries RoHS non-compliance status and does not specify transition frequency. The operating temperature range is limited to 150°C maximum (single value) compared to the -65°C to 150°C range of the TIP42G. This part is suitable for applications where RoHS compliance is not required and operating temperature does not approach -65°C. The TIP42A offers the highest inventory availability (14300 pcs in stock).

Frequently Asked Questions (FAQ)

Q: Can the TIP42CG directly replace the TIP42G in existing designs? A: Yes. The TIP42CG is the manufacturer-recommended substitute with identical electrical specifications across all critical parameters. The higher voltage rating (100 V) provides additional design margin without affecting circuit operation. Pin configuration and TO-220-3 package geometry are identical.

Q: What is the primary difference between TIP42G and TIP42CG? A: The TIP42CG features a 100 V collector-emitter breakdown voltage rating compared to 40 V for the TIP42G. All other electrical characteristics, including current, gain, saturation voltage, and power dissipation, are identical. The TIP42CG is actively produced, whereas the TIP42G is Last Time Buy.

Q: Is the TIP42A a suitable replacement for the TIP42G? A: The TIP42A meets all critical electrical parameter requirements and shares the TO-220-3 package. However, it is RoHS non-compliant and does not specify transition frequency. Use the TIP42A only in applications where RoHS compliance is not mandated and operating temperature remains above -65°C.

Q: Why does the TIP42CG have a higher voltage rating than the TIP42G? A: The TIP42CG is a higher-voltage variant within the TIP42 series. The increased voltage rating does not affect performance in applications designed for 40 V operation; it simply provides additional safety margin against voltage transients and overshoot conditions.

Q: Are there packaging differences between these substitutes? A: The TIP42G and TIP42CG are supplied in tube packaging, while the TIP42A is supplied in bag packaging. All three use the TO-220-3 through-hole package for circuit board mounting. Tube packaging is preferred for automated assembly processes.

Q: What compliance certifications apply to each part? A: The TIP42G and TIP42CG are ROHS3 compliant. The TIP42A is RoHS non-compliant. All three parts carry EAR99 ECCN classification and are REACH unaffected.

Q: Can I use the TIP42A in a design requiring RoHS compliance? A: No. The TIP42A is RoHS non-compliant and cannot be used in applications or markets requiring RoHS certification. Use the TIP42CG for RoHS-compliant designs.

Q: What is the inventory status for each part? A: TIP42G has 3154 pcs in stock (Last Time Buy status). TIP42CG has 1440 pcs in stock (Active status). TIP42A has 14300 pcs in stock (Active status). For long-term sourcing, the TIP42CG is recommended due to active product status.