2N3772G Equivalent & Substitute Parts

Part Overview

The 2N3772G is an NPN bipolar junction transistor manufactured by onsemi, rated for 60 V collector-emitter breakdown voltage and 20 A maximum collector current in a TO-204 (TO-3) through-hole package. This device is classified as obsolete, indicating that direct replacements from the original manufacturer are no longer in active production. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for repair, maintenance, and new production applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	60	V
Current - Collector (Ic) (Max)	20	A
Power - Max	150	W
Vce Saturation (Max) @ Ib, Ic	4V @ 4A, 20A	—
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 10A, 4V	—
Frequency - Transition	200	kHz
Operating Temperature Range	-65 to 200	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-204AA, TO-3	—

Substitute Part Grouping Explanation

Substitution of the 2N3772G is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Transistor type must be NPN
Voltage rating (Vce breakdown) must equal or exceed 60 V
Maximum collector current (Ic) must equal or exceed 20 A
Power dissipation capability must equal or exceed 150 W
Operating temperature range must encompass -65°C to 200°C
Vce saturation characteristics must be compatible with circuit requirements

Mechanical Compatibility Criteria:

Mounting type must be through-hole
Package must be TO-204 (TO-3) or equivalent footprint

Substitute parts are grouped into two categories based on electrical performance:

Category 1: Full Electrical Equivalents — Parts meeting or exceeding all electrical specifications of the 2N3772G while maintaining identical or superior performance characteristics.

Category 2: Partial Electrical Equivalents — Parts sharing the same package and basic NPN topology but with reduced current or power ratings, suitable only for applications where the full 20 A / 150 W capability is not required.

Parameter Comparison

Part Number	Manufacturer	Vce Breakdown (V)	Ic Max (A)	Power Max (W)	hFE Min @ Ic, Vce	Frequency (kHz)	Package	Product Status
2N3772G	onsemi	60	20	150	15 @ 10A, 4V	200	TO-204 (TO-3)	Obsolete
MJ15001G	onsemi	140	15	200	25 @ 4A, 2V	2000	TO-204 (TO-3)	Active
2N3716	Microchip Technology	80	10	5	50 @ 1A, 2V	—	TO-204 (TO-3)	Active
2N3772	Microchip Technology	60	5	6	15 @ 10A, 4V	—	TO-3	Active
JANTX2N3772	Microchip Technology	60	20	6	15 @ 10A, 4V	—	TO-3	Active
JANTXV2N3772	Microchip Technology	60	5	6	15 @ 10A, 4V	—	TO-3	Active
2N3715	Microchip Technology	60	1	5	50 @ 1A, 2V	—	TO-3	Active

Engineering Selection Recommendations

Primary Substitute: MJ15001G (onsemi)

The MJ15001G is the recommended substitute for the 2N3772G in applications requiring full electrical equivalence or superior performance. This part exceeds the original specification in voltage rating (140 V vs. 60 V), power dissipation (200 W vs. 150 W), and transition frequency (2 MHz vs. 200 kHz). The MJ15001G is manufactured by onsemi, the original manufacturer of the 2N3772G, ensuring design continuity and process consistency. The part is in active production status with ROHS3 compliance and REACH unaffected status. The maximum collector current is 15 A, which is lower than the 2N3772G specification of 20 A; however, this reduction is offset by superior voltage and power ratings suitable for most legacy applications.

Military-Grade Substitute: JANTX2N3772 (Microchip Technology)

The JANTX2N3772 provides an active-production alternative with identical electrical specifications to the 2N3772G, including 60 V breakdown voltage, 20 A maximum collector current, and matching Vce saturation characteristics. This part carries military qualification (MIL-PRF-19500/518) and is available in bulk packaging. The JANTX2N3772 is suitable for applications requiring military-grade components or where exact electrical matching is mandatory. Power dissipation is rated at 6 W, which is significantly lower than the original 150 W specification; circuit design must account for this thermal limitation.

Lower-Current Alternatives: 2N3716, 2N3772, JANTXV2N3772, 2N3715 (Microchip Technology)

These parts share the TO-3 package and NPN topology but are rated for reduced collector current and power dissipation. The 2N3716 supports 10 A at 80 V with 5 W power rating. The 2N3772 (Microchip variant) and JANTXV2N3772 support 5 mA at 60 V with 6 W power rating. The 2N3715 supports 1 mA at 60 V with 5 W power rating. These parts are suitable only for applications where the full 20 A / 150 W capability of the 2N3772G is not required. All are in active production status.

Compliance Considerations:

The 2N3772G is ROHS3 compliant. The MJ15001G is also ROHS3 compliant. The Microchip variants (2N3772, 2N3716, JANTX2N3772, JANTXV2N3772, 2N3715) are marked as RoHS non-compliant. Selection must account for end-product RoHS requirements. All listed parts are REACH unaffected and carry EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can the MJ15001G directly replace the 2N3772G in all applications?

A: The MJ15001G is electrically superior in voltage and power ratings but has a lower maximum collector current (15 A vs. 20 A). Direct substitution is valid for applications operating at or below 15 A. Applications requiring the full 20 A capability must be re-evaluated. The MJ15001G's higher voltage rating (140 V) and power dissipation (200 W) provide additional design margin in most circuits.

Q: What is the difference between 2N3772 and 2N3772G?

A: The 2N3772G is the onsemi version rated for 20 A and 150 W. The 2N3772 from Microchip Technology is rated for only 5 mA and 6 W. These are not equivalent despite sharing the same base part number. The "G" suffix in 2N3772G indicates a specific manufacturer variant with higher current and power ratings.

Q: Are JANTX and JANTXV variants suitable for commercial applications?

A: JANTX and JANTXV designations indicate military-grade qualification per MIL-PRF-19500/518. These parts are suitable for both military and commercial applications. However, the power rating (6 W) is significantly lower than the original 2N3772G (150 W), limiting their use to low-power circuits.

Q: Does package compatibility guarantee electrical substitution?

A: No. While all listed parts use the TO-204 (TO-3) through-hole package, electrical specifications vary significantly. The 2N3715 and 2N3772 (Microchip) support only milliamp-level currents, whereas the 2N3772G supports 20 A. Package compatibility is necessary but not sufficient for substitution. Electrical parameters must be verified against circuit requirements.

Q: What is the impact of the lower power rating in Microchip variants?

A: The Microchip 2N3772 and JANTX2N3772 are rated for 6 W maximum power dissipation compared to the original 150 W. This represents a 25-fold reduction in thermal capacity. These parts are suitable only for low-power signal applications or circuits with minimal collector current and voltage product. High-power applications must use the MJ15001G or equivalent high-power devices.

Q: Are there RoHS compliance implications for substitution?

A: Yes. The 2N3772G and MJ15001G are ROHS3 compliant. The Microchip variants (2N3772, 2N3716, JANTX2N3772, JANTXV2N3772, 2N3715) are RoHS non-compliant. Products destined for markets with RoHS requirements must use the MJ15001G or confirm that RoHS exemptions apply to the end application.

Q: Can the 2N3716 substitute for the 2N3772G?

A: The 2N3716 is limited to 10 A at 80 V with 5 W power dissipation. This part is suitable only for applications requiring less than 10 A and where the 5 W thermal limit is acceptable. It is not a general substitute for the 2N3772G in high-current applications.

Q: What is the significance of transition frequency differences?

A: The 2N3772G has a transition frequency of 200 kHz, while the MJ15001G operates at 2 MHz. Higher transition frequency indicates faster switching capability and better high-frequency performance. The MJ15001G is superior for applications requiring faster switching or higher-frequency operation.

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