FZT751TC Equivalent & Substitute Parts

Part Overview

The FZT751TC is a PNP bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-223-3 package. This device operates at 60 V collector-emitter breakdown voltage with a maximum collector current of 3 A and a maximum power dissipation of 2 W. The transistor is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for components with enhanced electrical characteristics or different manufacturer qualifications.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	60	V
Current - Collector (Ic) (Max)	3	A
Power - Max	2	W
Frequency - Transition	140	MHz
Vce Saturation (Max) @ Ib, Ic	600 mV @ 300 mA, 3 A	—
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 500 mA, 2 V	—
Operating Temperature Range	-55 to 150	°C
Package / Case	TO-261-4, TO-261AA	—
Supplier Device Package	SOT-223-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the FZT751TC is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Direct Substitution:

Transistor Type: PNP
Voltage - Collector Emitter Breakdown (Max): 60 V minimum
Current - Collector (Ic) (Max): 3 A minimum
Power - Max: 2 W minimum
Operating Temperature Range: -55°C to 150°C minimum
Package / Case: TO-261-4 or TO-261AA
Mounting Type: Surface Mount

Acceptable Variation Parameters:

Frequency - Transition: 75 MHz or higher
Vce Saturation: 550 mV to 600 mV
DC Current Gain (hFE): 100 or higher at specified conditions
Supplier Device Package: SOT-223-3 or SOT-223-4

Substitute parts are grouped into three categories: Direct Manufacturer Equivalents (same manufacturer, identical electrical specifications), Parametric Equivalents (same manufacturer, enhanced specifications), and Cross-Manufacturer Alternatives (different manufacturers, comparable electrical characteristics).

Parameter Comparison

Part Number	Manufacturer	Ic (Max) A	Voltage V	Power W	Frequency MHz	Vce Sat mV	hFE (Min)	Package	Product Status
FZT751TC	Diodes Incorporated	3	60	2	140	600	100	SOT-223-3	Active
FZT751QTA	Diodes Incorporated	3	60	3	140	600	100	SOT-223-3	Active
FZT751QTC	Diodes Incorporated	3	60	2	140	600	100	SOT-223-3	Active
FZT751TA	Diodes Incorporated	3	60	2	140	600	100	SOT-223-3	Active
NZT660	Fairchild Semiconductor	3	60	2	75	550	100	SOT-223-4	Active
BCP52,135	Nexperia USA Inc.	1	60	1	145	500	63	SOT-223	Active
BCP52-10,135	Nexperia USA Inc.	1	60	1.3	145	500	63	SOT-223	Active
BCP52-16,115	Nexperia USA Inc.	1	60	1	145	500	100	SOT-223	Active
BCP5216H6327XTSA1	Infineon Technologies	1	60	2	125	500	100	SOT-223-4	Last Time Buy
BSP31,115	NXP USA Inc.	1	60	1.3	100	500	100	SOT-223	Active
NSS60600MZ4T1G	onsemi	6	60	0.8	100	350	120	SOT-223	Active

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Diodes Incorporated):

FZT751QTA, FZT751QTC, and FZT751TA are direct equivalents manufactured by Diodes Incorporated. These parts maintain identical electrical specifications to the FZT751TC with respect to collector current (3 A), voltage rating (60 V), and operating temperature range (-55°C to 150°C). FZT751QTA provides enhanced power dissipation capability at 3 W compared to the 2 W rating of the primary part. FZT751TA is available in Cut Tape and Digi-Reel packaging format, offering alternative supply chain options. All three parts are Active status and RoHS3 compliant.

Parametric Equivalent with Automotive Qualification:

FZT751QTC is qualified to AEC-Q101 automotive standards and carries Active product status. This part is suitable for applications requiring automotive-grade components while maintaining identical electrical performance to the FZT751TC.

Cross-Manufacturer Alternatives:

NZT660 (Fairchild Semiconductor) meets the 3 A collector current and 60 V voltage requirements with identical 2 W power rating. The transition frequency is reduced to 75 MHz and Vce saturation is improved at 550 mV. This part is supplied in bulk packaging and SOT-223-4 package format.

Current-Limited Alternatives:

BCP52 series parts (Nexperia USA Inc., Infineon Technologies, NXP USA Inc.) and BSP31,115 (NXP USA Inc.) are rated for 1 A maximum collector current, which is below the 3 A requirement of the FZT751TC. These parts are suitable only for applications where the actual circuit current demand does not exceed 1 A. BCP52,135, BCP52-10,135, and BCP52-16,115 are all Active status with AEC-Q100 automotive qualification. BCP5216H6327XTSA1 (Infineon Technologies) carries Last Time Buy status and should not be selected for new designs.

Higher Current Alternative:

NSS60600MZ4T1G (onsemi) provides 6 A maximum collector current, exceeding the 3 A specification of the FZT751TC. This part is suitable for applications requiring higher current capacity while maintaining the 60 V voltage rating and surface mount SOT-223 package compatibility. Power dissipation is rated at 800 mW, which is below the 2 W primary specification.

Frequently Asked Questions (FAQ)

Q: Can FZT751QTA be used as a direct replacement for FZT751TC?

A: Yes. FZT751QTA is manufactured by Diodes Incorporated and maintains identical electrical specifications for collector current (3 A), voltage rating (60 V), and operating temperature range (-55°C to 150°C). The primary difference is enhanced power dissipation at 3 W versus 2 W. Both parts are RoHS3 compliant and Active status.

Q: What is the difference between FZT751TA and FZT751TC?

A: FZT751TA and FZT751TC are electrically identical. The difference is packaging format: FZT751TA is supplied in Cut Tape and Digi-Reel format, while FZT751TC is supplied in Tape & Reel format. Both maintain 3 A collector current, 60 V voltage rating, 2 W power dissipation, and 140 MHz transition frequency.

Q: Can BCP52,135 replace FZT751TC in all applications?

A: No. BCP52,135 is rated for maximum 1 A collector current, which is one-third the 3 A rating of FZT751TC. This part is suitable only for circuits where actual collector current does not exceed 1 A. The voltage rating (60 V) and operating temperature range (-55°C to 150°C) are compatible.

Q: Is NZT660 a suitable substitute for FZT751TC?

A: NZT660 meets the 3 A collector current and 60 V voltage requirements with identical 2 W power dissipation. The transition frequency is lower at 75 MHz compared to 140 MHz, and Vce saturation is improved at 550 mV. NZT660 is suitable for applications where the lower frequency specification does not impact circuit performance.

Q: What does "Last Time Buy" status mean for BCP5216H6327XTSA1?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for this part. New orders may be accepted for a limited time, but the part will not be manufactured indefinitely. This part should not be selected for new product designs. Active status alternatives such as BCP52-16,115 should be used instead.

Q: Can NSS60600MZ4T1G be used in place of FZT751TC?

A: NSS60600MZ4T1G maintains the 60 V voltage rating and surface mount SOT-223 package compatibility. However, the maximum collector current is 6 A, which exceeds the 3 A specification of FZT751TC. Power dissipation is rated at 800 mW, below the 2 W primary specification. This part is suitable only for applications where the circuit design accommodates the higher current capability and lower power rating.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the compliance profile of FZT751TC.

Q: What is the significance of AEC-Q101 qualification on FZT751QTC?

A: AEC-Q101 qualification indicates that FZT751QTC meets automotive industry reliability and quality standards. This qualification is relevant only for applications requiring automotive-grade components. For non-automotive applications, FZT751QTC and FZT751TC are functionally equivalent.

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