PMBT4401-QZ Equivalent & Substitute Parts

Part Overview

The PMBT4401-QZ is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in automotive-grade circuits. This device operates at a maximum collector current of 600 mA, collector-emitter breakdown voltage of 40 V, and maximum power dissipation of 250 mW. The part is packaged in SOT-23-3 (TO-236) configuration and maintains active product status with full AEC-Q101 automotive qualification.

Substitute parts become necessary when the primary part number experiences supply constraints, extended lead times, or inventory limitations. The substitute parts listed maintain identical electrical and mechanical specifications while offering alternative packaging designations or manufacturing date codes from the same manufacturer.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	600	mA
Voltage - Collector Emitter Breakdown (Max)	40	V
Vce Saturation (Max) @ Ib, Ic	750 mV @ 50 mA, 500 mA	—
Current - Collector Cutoff (Max)	50	nA
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 150 mA, 1 V	—
Power - Max	250	mW
Frequency - Transition	250	MHz
Operating Temperature (TJ)	150	°C
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

The substitute parts PMBT4401,185, PMBT4401,215, and PMBT4401,235 are classified as parametric equivalents to the PMBT4401-QZ. Substitution eligibility is determined by the following criteria:

Electrical Parameters (Must Match):

Transistor Type: NPN
Current - Collector (Ic) Max: 600 mA
Voltage - Collector Emitter Breakdown (Max): 40 V
Vce Saturation (Max) @ Ib, Ic: 750 mV @ 50 mA, 500 mA
Current - Collector Cutoff (Max): 50 nA
DC Current Gain (hFE) Min @ Ic, Vce: 100 @ 150 mA, 1 V
Power - Max: 250 mW
Frequency - Transition: 250 MHz
Operating Temperature (TJ): 150 °C

Mechanical Parameters (Must Match):

Package / Case: TO-236-3, SC-59, SOT-23-3
Mounting Type: Surface Mount

Compliance Parameters (Must Match):

Grade: Automotive
RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

All substitute parts meet these criteria. Differences exist only in manufacturing date codes (indicated by the numeric suffixes 185, 215, 235) and supplier device package designations (TO-236AB versus SOT-23-3), which do not affect electrical or mechanical compatibility.

Parameter Comparison

Parameter	PMBT4401-QZ	PMBT4401,185	PMBT4401,215	PMBT4401,235
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.
Transistor Type	NPN	NPN	NPN	NPN
Current - Collector (Ic) Max	600 mA	600 mA	600 mA	600 mA
Voltage - Collector Emitter Breakdown (Max)	40 V	40 V	40 V	40 V
Vce Saturation (Max) @ Ib, Ic	750 mV @ 50 mA, 500 mA	750 mV @ 50 mA, 500 mA	750 mV @ 50 mA, 500 mA	750 mV @ 50 mA, 500 mA
Current - Collector Cutoff (Max)	50 nA	50 nA	50 nA	50 nA
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 150 mA, 1 V	100 @ 150 mA, 1 V	100 @ 150 mA, 1 V	100 @ 150 mA, 1 V
Power - Max	250 mW	250 mW	250 mW	250 mW
Frequency - Transition	250 MHz	250 MHz	250 MHz	250 MHz
Operating Temperature (TJ)	150 °C	150 °C	150 °C	150 °C
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Grade	Automotive	Automotive	Automotive	Automotive
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All substitute parts listed are direct parametric equivalents to the PMBT4401-QZ and are suitable for component selection in applications requiring NPN bipolar junction transistors with the specified electrical and mechanical characteristics.

Qualification and Compliance: All parts maintain automotive-grade classification with ROHS3 compliance and REACH unaffected status. The PMBT4401-QZ carries AEC-Q101 qualification, while substitute parts PMBT4401,185, PMBT4401,215, and PMBT4401,235 carry AEC-Q100 qualification. Both AEC-Q100 and AEC-Q101 are valid automotive qualifications for this device category.

Availability Considerations: Current inventory levels vary among substitute parts. PMBT4401,215 maintains the highest inventory at 376,902 pieces, followed by PMBT4401,235 at 36,560 pieces and PMBT4401,185 at 18,726 pieces. The primary part PMBT4401-QZ has 1,119 pieces in stock.

Packaging Designation: The primary part is designated as SOT-23-3 (TO-236), while substitute parts are designated as TO-236AB. Both designations refer to the same three-lead surface mount package with identical pin configuration and mechanical dimensions.

Frequently Asked Questions (FAQ)

Q: Are the substitute parts electrically identical to the PMBT4401-QZ?

A: Yes. All substitute parts maintain identical electrical specifications including collector current rating (600 mA), collector-emitter breakdown voltage (40 V), saturation voltage characteristics, current gain, power dissipation (250 mW), and transition frequency (250 MHz).

Q: What is the difference between the part number suffixes (185, 215, 235)?

A: The numeric suffixes indicate manufacturing date codes assigned by Nexperia USA Inc. These designations do not affect electrical performance or mechanical compatibility. They reflect different production batches of the same device.

Q: Can I use PMBT4401,215 in place of PMBT4401-QZ without circuit modifications?

A: Yes. The substitute parts are pin-compatible and electrically equivalent. No circuit modifications are required for direct substitution.

Q: What is the difference between SOT-23-3 and TO-236AB package designations?

A: SOT-23-3 and TO-236AB refer to the same three-lead surface mount package. Both designations describe identical physical dimensions, pin spacing, and lead configuration. The different naming conventions reflect alternative industry naming standards for the same package type.

Q: Are all substitute parts automotive-qualified?

A: Yes. All parts listed carry automotive-grade classification. The primary part holds AEC-Q101 qualification, while substitute parts hold AEC-Q100 qualification. Both qualifications are valid for automotive applications in this device category.

Q: What is the moisture sensitivity level (MSL) of the substitute parts?

A: Substitute parts PMBT4401,185, PMBT4401,215, and PMBT4401,235 are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are the substitute parts RoHS compliant?

A: Yes. All parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message