MJD32CTF Equivalent & Substitute Parts

Part Overview

The MJD32CTF is a PNP bipolar junction transistor manufactured by onsemi, rated for 100 V collector-emitter breakdown voltage and 3 A maximum collector current in a surface mount DPAK package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. The MJD32CTF serves in applications requiring moderate-power PNP switching and amplification functions with 100 V voltage capability.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Max)	3	A
Collector-Emitter Breakdown Voltage (Max)	100	V
Vce Saturation (Max)	1.2	V @ 375mA, 3A
Collector Cutoff Current (Max)	50	µA
DC Current Gain (hFE Min)	10	@ 3A, 4V
Power Dissipation (Max)	1.56	W
Transition Frequency	3	MHz
Operating Temperature (Max)	150	°C (TJ)
Package Type	TO-252-3, DPAK	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitute parts for the MJD32CTF are classified into two categories based on electrical parameter compatibility:

Direct Substitutes maintain identical electrical specifications across all critical parameters: 100 V collector-emitter breakdown voltage, 3 A maximum collector current, 1.2 V Vce saturation at specified bias conditions, 50 µA collector cutoff current, 10 hFE minimum at 3 A and 4 V, 1.56 W power dissipation, and 3 MHz transition frequency. These parts are pin-compatible and functionally interchangeable in the MJD32CTF application circuit without design modification.

Similar Substitutes share the same transistor type (PNP), package form factor (DPAK), and voltage rating (100 V) but differ in one or more of the following parameters: collector current rating, power dissipation, transition frequency, Vce saturation characteristics, or DC current gain. These parts require circuit evaluation to confirm suitability for the intended application.

The key parameters determining substitution eligibility are:

Transistor polarity (PNP)
Collector-emitter breakdown voltage (100 V minimum)
Collector current rating (3 A minimum for direct substitutes)
Package compatibility (DPAK surface mount)
Vce saturation and DC current gain characteristics

Parameter Comparison

Part Number	Manufacturer	Status	Ic (Max) [A]	Vce(BR) [V]	Vce Sat [V]	hFE Min	Power [W]	fT [MHz]	Package	Compliance
MJD32CTF	onsemi	Obsolete	3	100	1.2 @ 375mA, 3A	10 @ 3A, 4V	1.56	3	DPAK	REACH Unaffected
MJD32CT4G	onsemi	Active	3	100	1.2 @ 375mA, 3A	10 @ 3A, 4V	1.56	3	DPAK	ROHS3 Compliant
NJVMJD32CG	onsemi	Active	3	100	1.2 @ 375mA, 3A	10 @ 3A, 4V	1.56	3	DPAK	ROHS3 Compliant
NSS1C300ET4G	onsemi	Active	3	100	0.4 @ 300mA, 3A	120 @ 1A, 2V	2.1	100	DPAK	ROHS3 Compliant
2SB1215S-TL-E	onsemi	Active	3	100	0.5 @ 150mA, 1.5A	140 @ 500mA, 5V	1	130	TP-FA	ROHS3 Compliant
2SB1216S-TL-E	onsemi	Obsolete	4	100	0.5 @ 200mA, 2A	140 @ 500mA, 5V	1	130	TP-FA	ROHS3 Compliant
2SB1216T-TL-E	onsemi	Active	4	100	0.5 @ 200mA, 2A	200 @ 500mA, 5V	1	130	TP-FA	ROHS3 Compliant
MJD32RLG	onsemi	Active	3	40	1.2 @ 375mA, 3A	10 @ 3A, 4V	1.56	3	DPAK	ROHS3 Compliant
MJD32T4G	onsemi	Active	3	40	1.2 @ 375mA, 3A	10 @ 3A, 4V	1.56	3	DPAK	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (Recommended for Pin-Compatible Replacement)

MJD32CT4G and NJVMJD32CG are direct electrical and mechanical equivalents to the MJD32CTF. Both parts maintain active product status with ROHS3 compliance certification. MJD32CT4G is supplied in Cut Tape and Digi-Reel packaging with 37,200 units in stock inventory. NJVMJD32CG is supplied in Tube packaging with 7,900 units in stock. Both parts feature identical electrical parameters and DPAK surface mount packaging, enabling direct substitution without circuit modification.

Similar Substitutes (Conditional Application Suitability)

NSS1C300ET4G maintains 100 V voltage rating and 3 A collector current but exhibits improved performance characteristics: 0.4 V Vce saturation (versus 1.2 V), 120 hFE minimum (versus 10), 100 MHz transition frequency (versus 3 MHz), and 2.1 W power dissipation (versus 1.56 W). This part is suitable for applications where lower saturation voltage and higher frequency response provide circuit benefits. ROHS3 compliance and active status support long-term availability.

2SB1215S-TL-E and 2SB1216T-TL-E are active-status alternatives with 100 V voltage rating but differ in package form (TP-FA versus DPAK), transition frequency (130 MHz), and DC current gain characteristics. 2SB1216T-TL-E provides 4 A collector current capability with 200 hFE minimum. These parts require PCB layout modification due to different package geometry.

MJD32RLG and MJD32T4G are electrically identical to MJD32CTF but rated for 40 V collector-emitter breakdown voltage. These parts are unsuitable for 100 V applications and are listed for reference only.

Frequently Asked Questions (FAQ)

Q: Can MJD32CT4G directly replace MJD32CTF without circuit modification?

A: Yes. MJD32CT4G is a direct electrical and mechanical equivalent with identical collector current (3 A), collector-emitter breakdown voltage (100 V), Vce saturation (1.2 V), DC current gain (10 hFE minimum), power dissipation (1.56 W), and transition frequency (3 MHz). The DPAK package pinout is identical. No circuit design changes are required.

Q: What is the difference between MJD32CT4G and NJVMJD32CG?

A: Both parts are direct equivalents with identical electrical specifications. The primary difference is packaging format: MJD32CT4G is supplied in Cut Tape and Digi-Reel, while NJVMJD32CG is supplied in Tube. Selection depends on procurement and assembly process requirements.

Q: Can NSS1C300ET4G be used as a drop-in replacement?

A: NSS1C300ET4G is electrically compatible for 100 V, 3 A applications but exhibits different performance characteristics. Vce saturation is lower (0.4 V versus 1.2 V), DC current gain is higher (120 versus 10), and transition frequency is significantly higher (100 MHz versus 3 MHz). Circuit evaluation is required to confirm suitability, particularly in switching applications where saturation voltage and frequency response affect performance.

Q: Why are MJD32RLG and MJD32T4G listed as similar substitutes if they have different voltage ratings?

A: MJD32RLG and MJD32T4G are listed for reference completeness but are not suitable substitutes for the MJD32CTF. These parts are rated for 40 V collector-emitter breakdown voltage, which is insufficient for 100 V applications. They are included to prevent accidental selection of lower-voltage variants within the MJD32 product family.

Q: What is the significance of product status (Active versus Obsolete)?

A: Active-status parts (MJD32CT4G, NJVMJD32CG, NSS1C300ET4G, 2SB1215S-TL-E, 2SB1216T-TL-E) are currently manufactured and supported by onsemi with guaranteed long-term availability. Obsolete-status parts (MJD32CTF, 2SB1216S-TL-E) are no longer in production. For new designs and long-term procurement, active-status substitutes are recommended.

Q: Are all listed substitutes ROHS3 compliant?

A: Direct substitutes MJD32CT4G and NJVMJD32CG are ROHS3 compliant. The original MJD32CTF is REACH Unaffected but does not carry ROHS3 certification. For applications requiring ROHS3 compliance, MJD32CT4G or NJVMJD32CG are required.

Q: Can 2SB1215S-TL-E or 2SB1216T-TL-E be used in existing PCB designs?

A: No. These parts use TP-FA package geometry, which differs from the DPAK package of MJD32CTF. PCB layout and footprint modifications are required. Additionally, the different package form factor may affect thermal performance and board-level integration.

Q: What inventory levels are available for direct substitutes?

A: MJD32CT4G has 37,200 units in stock. NJVMJD32CG has 7,900 units in stock. Both direct substitutes maintain substantial inventory for procurement continuity.

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