MMBT5401 Equivalent & Substitute Parts

Part Overview

The MMBT5401 is a surface-mount PNP bipolar junction transistor manufactured by onsemi, rated for 150 V collector-emitter breakdown voltage and 600 mA maximum collector current. The device is packaged in SOT-23-3 (TO-236-3) configuration and operates across a temperature range of -55°C to 150°C. The original onsemi MMBT5401 carries an obsolete product status, necessitating identification of functionally equivalent alternatives from active manufacturers. Substitute parts maintain electrical compatibility while offering current production availability and compliance certifications.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	150	V
Current - Collector (Ic) (Max)	600	mA
Vce Saturation (Max) @ Ib, Ic	500 mV @ 5 mA, 50 mA	—
Current - Collector Cutoff (Max)	50	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	60 @ 10 mA, 5 V	—
Power - Max	350	mW
Frequency - Transition	300	MHz
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MMBT5401 are classified into two functional groups based on electrical parameter compatibility:

Group 1: Reduced Current Rating (500 mA) Parts MMBT5401LT1G, MMBT5401LT3G, NSVMMBT5401LT3G, and SMMBT5401LT1G operate at 500 mA maximum collector current, compared to the original 600 mA specification. These parts maintain all other critical parameters: 150 V breakdown voltage, identical saturation voltage, 300 MHz transition frequency, and -55°C to 150°C operating range. Power dissipation ranges from 225 mW to 300 mW. These substitutes are suitable for applications where the 500 mA rating satisfies circuit requirements.

Group 2: Full Current Rating (600 mA) Parts MMBT5401-7-F (Diodes Incorporated), ZXTP5401FLTA (Diodes Incorporated), CMPT5401 BK PBFREE (Central Semiconductor), MMBT5401-G (Comchip Technology), MMBT5401-TP (Micro Commercial Co), and MMBT5401_R1_00001 (Panjit International) maintain the 600 mA collector current specification. These parts preserve the 150 V breakdown voltage and saturation voltage characteristics. Transition frequency varies between 100 MHz and 300 MHz depending on manufacturer. Power dissipation ranges from 225 mW to 350 mW.

Critical Substitution Parameters:

Voltage - Collector Emitter Breakdown: 150 V (all substitutes)
Vce Saturation: 500 mV @ 5 mA, 50 mA (all substitutes)
Current - Collector Cutoff: 50 nA or 100 nA (all substitutes)
DC Current Gain (hFE): 60 or 100 @ 10 mA, 5 V (all substitutes)
Operating Temperature: -55°C to 150°C (all substitutes, except CMPT5401 at -65°C minimum)
Package: SOT-23-3 / TO-236-3 (all substitutes)

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	Vce Sat (Max) mV	hFE (Min) @ 10mA, 5V	Power (Max) mW	Frequency (Max) MHz	Temp Range °C	Product Status
MMBT5401	onsemi	600	150	500	60	350	300	-55 to 150	Obsolete
MMBT5401LT1G	onsemi	500	150	500	60	300	300	-55 to 150	Active
MMBT5401LT3G	onsemi	500	150	500	60	300	300	-55 to 150	Active
NSVMMBT5401LT3G	onsemi	500	150	500	60	225	300	-55 to 150	Active
SMMBT5401LT1G	onsemi	500	150	500	60	300	300	-55 to 150	Active
MMBT5401-7-F	Diodes Incorporated	600	150	500	60	300	300	-55 to 150	Active
ZXTP5401FLTA	Diodes Incorporated	600	150	500	60	330	100	-55 to 150	Active
CMPT5401 BK PBFREE	Central Semiconductor Corp	600	150	500	60	350	300	-65 to 150	Active
MMBT5401-G	Comchip Technology	600	150	500	100	300	100	-55 to 150	Active
MMBT5401-TP	Micro Commercial Co	600	150	500	100	300	100	-55 to 150	Active
MMBT5401_R1_00001	Panjit International Inc.	600	150	500	60	225	300	-55 to 150	Active

Engineering Selection Recommendations

Primary Substitutes (Full Electrical Equivalence)

MMBT5401-7-F (Diodes Incorporated) and CMPT5401 BK PBFREE (Central Semiconductor Corp) provide complete electrical equivalence to the original MMBT5401. Both maintain 600 mA collector current, 150 V breakdown voltage, 300 mW minimum power dissipation, and 300 MHz transition frequency. MMBT5401-7-F carries AEC-Q101 automotive qualification and ROHS3 compliance. CMPT5401 BK PBFREE extends the operating temperature minimum to -65°C and maintains ROHS3 compliance. Both are in active production status.

Secondary Substitutes (Reduced Current Rating)

MMBT5401LT1G, MMBT5401LT3G, NSVMMBT5401LT3G, and SMMBT5401LT1G from onsemi operate at 500 mA maximum collector current. These parts are suitable for applications where circuit design accommodates the reduced current specification. All maintain 150 V breakdown voltage, identical saturation characteristics, and 300 MHz transition frequency. MMBT5401LT1G and SMMBT5401LT1G are available in Cut Tape packaging; MMBT5401LT3G and NSVMMBT5401LT3G are supplied in Tape & Reel format. All carry ROHS3 compliance and active product status.

Alternative Substitutes (Modified Specifications)

ZXTP5401FLTA (Diodes Incorporated) maintains 600 mA current rating and 150 V breakdown voltage but operates at 100 MHz transition frequency compared to the original 300 MHz specification. This part is suitable for lower-frequency applications. MMBT5401-G (Comchip Technology) and MMBT5401-TP (Micro Commercial Co) provide 600 mA current rating with elevated DC current gain (hFE = 100 minimum) and reduced transition frequency (100 MHz). These parts are appropriate for circuits tolerating lower frequency response and higher current gain characteristics.

Compliance and Availability

All substitute parts carry ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating. All maintain the SOT-23-3 package configuration. Inventory availability ranges from 2,740 units (MMBT5401-7-F) to 65,100 units (SMMBT5401LT1G). Selection should prioritize active production status and compliance certifications aligned with application requirements.

Frequently Asked Questions (FAQ)

Q: Can MMBT5401LT1G or MMBT5401LT3G replace the original MMBT5401 in all applications?

A: MMBT5401LT1G and MMBT5401LT3G operate at 500 mA maximum collector current, compared to the original 600 mA specification. These substitutes are compatible with applications where circuit design accommodates the reduced current rating. All other electrical parameters—breakdown voltage, saturation voltage, gain, and frequency response—remain identical. Verify that your circuit does not require the full 600 mA specification before selecting these parts.

Q: What is the difference between MMBT5401-7-F and ZXTP5401FLTA?

A: Both parts are manufactured by Diodes Incorporated and maintain 600 mA collector current and 150 V breakdown voltage. MMBT5401-7-F operates at 300 MHz transition frequency, while ZXTP5401FLTA operates at 100 MHz. MMBT5401-7-F carries AEC-Q101 automotive qualification. Select MMBT5401-7-F for applications requiring higher frequency response or automotive-grade qualification. Select ZXTP5401FLTA for lower-frequency applications where the reduced transition frequency is acceptable.

Q: Are all substitute parts available in SOT-23-3 packaging?

A: All substitute parts are packaged in SOT-23-3 (TO-236-3, SC-59) configuration, maintaining mechanical and electrical compatibility with the original MMBT5401. Packaging format varies by part number: some are supplied in Cut Tape (CT) & Digi-Reel format, others in Tape & Reel (TR), and one in Bulk format. Verify packaging format aligns with your assembly process requirements.

Q: What is the significance of the DC current gain (hFE) difference between parts?

A: The original MMBT5401 specifies hFE minimum of 60 @ 10 mA, 5 V. MMBT5401-G and MMBT5401-TP specify hFE minimum of 100 @ 10 mA, 5 V. Higher current gain affects circuit biasing and amplification characteristics. Parts with hFE = 100 require less base current to achieve saturation. Verify that your circuit design accommodates the higher gain specification, or select substitutes with hFE = 60 to maintain original circuit behavior.

Q: Which substitute offers the widest operating temperature range?

A: CMPT5401 BK PBFREE from Central Semiconductor Corp operates from -65°C to 150°C, extending the minimum temperature by 10°C compared to the original MMBT5401 specification of -55°C to 150°C. All other substitutes maintain the -55°C to 150°C range. Select CMPT5401 BK PBFREE for applications requiring extended low-temperature operation.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed carry RoHS3 compliance certification. The original MMBT5401 does not specify RoHS status. All substitutes maintain REACH Unaffected status and carry identical ECCN (EAR99) and HTSUS (8541.21.0075) classifications.

Q: What is the difference between onsemi variants (MMBT5401LT1G, MMBT5401LT3G, NSVMMBT5401LT3G, SMMBT5401LT1G)?

A: All four onsemi variants operate at 500 mA collector current and maintain identical electrical specifications. Differences are in packaging format and power dissipation: MMBT5401LT1G and SMMBT5401LT1G are supplied in Cut Tape & Digi-Reel format; MMBT5401LT3G and NSVMMBT5401LT3G are supplied in Tape & Reel format. NSVMMBT5401LT3G and SMMBT5401LT1G specify 225 mW maximum power dissipation, while MMBT5401LT1G and MMBT5401LT3G specify 300 mW. Select based on packaging requirements and power dissipation tolerance.

Q: Can I use MMBT5401-G or MMBT5401-TP as direct replacements?

A: MMBT5401-G (Comchip Technology) and MMBT5401-TP (Micro Commercial Co) maintain 600 mA collector current and 150 V breakdown voltage. However, both specify 100 MHz transition frequency compared to the original 300 MHz, and both specify hFE minimum of 100 compared to the original 60. These parts are suitable for lower-frequency applications where the reduced frequency response and higher gain do not adversely affect circuit performance. Verify circuit compatibility before selection.

Q: What inventory levels are available for each substitute?

A: Inventory availability varies significantly: SMMBT5401LT1G (65,100 units), NSVMMBT5401LT3G (20,533 units), ZXTP5401FLTA (56,270 units), MMBT5401LT1G (305,200 units), MMBT5401LT3G (10,300 units), MMBT5401_R1_00001 (11,262 units), MMBT5401-G (12,601 units), MMBT5401-TP (3,150 units), and MMBT5401-7-F (2,740 units). Verify current inventory status with your supplier before finalizing part selection for production quantities.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message