MMST5401Q-7-F Equivalent & Substitute Parts

Part Overview

The MMST5401Q-7-F is an active-status PNP bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-323 package. This component operates at 150 V collector-emitter breakdown voltage with a maximum collector current of 200 mA and 200 mW power dissipation. The device is qualified to AEC-Q101 automotive standards and maintains ROHS3 compliance with unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, packaging format preferences, or inventory availability while maintaining identical functional specifications.

Substiute Parts

MMST5401Q-7-F

Diodes IncorporatedIn Stock: 3501MMST5401Q-7-F Datasheet

Current PartRFQ

MMST5401-7-F

Diodes IncorporatedIn Stock: 17946MMST5401-7-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMST5401Q-7-F is determined by equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameters (Must Match):

• Transistor Type: PNP
• Voltage - Collector Emitter Breakdown (Max): 150 V
• Current - Collector (Ic) (Max): 200 mA
• Power - Max: 200 mW
• Frequency - Transition: 300 MHz
• DC Current Gain (hFE) (Min) @ Ic, Vce: 60 @ 10mA, 5V
• Vce Saturation (Max) @ Ib, Ic: 500mV @ 5mA, 50mA
• Current - Collector Cutoff (Max): 50 nA
• Operating Temperature Range: -55°C to 150°C

Mechanical Parameters (Must Match):

• Package / Case: SC-70, SOT-323
• Mounting Type: Surface Mount
• Supplier Device Package: SOT-323

Compliance Parameters (Must Match):

• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The primary distinction between the main part and substitute relates to packaging format: the MMST5401Q-7-F is supplied in Tape & Reel (TR) format, while the substitute MMST5401-7-F is available in Cut Tape (CT) & Digi-Reel® format. Both formats contain identical die and electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The MMST5401-7-F serves as a direct parametric equivalent to the MMST5401Q-7-F. Both components are manufactured by Diodes Incorporated and maintain active product status with identical electrical specifications across all critical parameters: 150 V breakdown voltage, 200 mA maximum collector current, 200 mW power dissipation, and 300 MHz transition frequency.

Both parts comply with ROHS3 requirements and carry unlimited moisture sensitivity rating (MSL 1). The components are functionally interchangeable at the circuit level when mounted in SOT-323 surface mount packages.

The distinction between these parts is limited to supply format: the main part number MMST5401Q-7-F is supplied in standard Tape & Reel format, while MMST5401-7-F is available in Cut Tape and Digi-Reel® formats. Selection between these formats depends on assembly equipment compatibility and procurement volume requirements rather than electrical performance.

Frequently Asked Questions (FAQ)

Q: Are MMST5401Q-7-F and MMST5401-7-F electrically identical?

A: Yes. Both parts share identical electrical specifications including 150 V breakdown voltage, 200 mA maximum collector current, 200 mW power rating, 300 MHz transition frequency, and DC current gain characteristics. The components are functionally equivalent at the circuit level.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) format supplies components on continuous carrier tape wound on a reel, suitable for high-volume automated assembly. Cut Tape (CT) format provides the same components on shorter tape segments without reels, typically used for lower-volume applications or manual assembly. Digi-Reel® is a proprietary format offering intermediate quantities. The die and electrical performance are identical across all formats.

Q: Can I use MMST5401-7-F in place of MMST5401Q-7-F in an automotive application?

A: Electrical substitution is valid based on parametric equivalence. However, the substitute part data does not explicitly specify automotive grade or AEC-Q101 qualification status. Verify compliance requirements with your design specifications and supplier documentation before final selection for automotive applications.

Q: Are both parts RoHS compliant?

A: Yes. Both MMST5401Q-7-F and MMST5401-7-F are ROHS3 compliant with unlimited moisture sensitivity (MSL 1), indicating no special storage or handling requirements.

Q: What is the operating temperature range for these transistors?

A: Both parts operate across -55°C to 150°C junction temperature range, suitable for industrial and automotive temperature environments.

Q: Do these parts require different PCB footprints?

A: No. Both components use the SOT-323 package (SC-70 case), which defines identical physical dimensions and pin configuration. PCB footprints are interchangeable.