MMST5401-7 Equivalent & Substitute Parts

Part Overview

The MMST5401-7 is a Surface Mount PNP Bipolar Junction Transistor (BJT) manufactured by Diodes Incorporated, housed in the SC-70/SOT-323 package. This component is rated for 150 V collector-emitter breakdown voltage with a maximum collector current of 200 mA and 200 mW power dissipation. The device operates across a temperature range of -55°C to 150°C and features a transition frequency of 300 MHz.

The MMST5401-7 is currently discontinued at DiGi Electronics. Equivalent substitute parts are available from the same manufacturer with identical electrical and mechanical specifications but different packaging configurations and product status classifications. These substitutes enable continued design implementation and production continuity.

Substiute Parts

MMST5401-7

Diodes IncorporatedIn Stock: 2004MMST5401-7 Datasheet

Current PartRFQ

MMST5401-7-F

Diodes IncorporatedIn Stock: 17946MMST5401-7-F Datasheet

Parametric EquivalentRFQ

MMST5401Q-7-F

Diodes IncorporatedIn Stock: 3501MMST5401Q-7-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMST5401-7 is determined by strict equivalence across all electrical parameters and mechanical compatibility. The substitute parts MMST5401-7-F and MMST5401Q-7-F maintain identical specifications for:

• Transistor type (PNP)
• Voltage rating (150 V maximum collector-emitter breakdown)
• Current rating (200 mA maximum collector current)
• Power dissipation (200 mW maximum)
• Frequency response (300 MHz transition frequency)
• DC current gain (60 minimum at specified conditions)
• Saturation voltage (500 mV maximum at specified conditions)
• Cutoff current (50 nA maximum)
• Operating temperature range (-55°C to 150°C)
• Package form factor (SC-70/SOT-323)
• Moisture sensitivity classification (MSL 1)

Differences between substitute parts are limited to packaging configuration (Cut Tape & Digi-Reel versus Tape & Reel), product status (Active versus Discontinued), and compliance certifications (RoHS3 Compliant, and automotive qualification for MMST5401Q-7-F).

Parameter Comparison

Engineering Selection Recommendations

MMST5401-7-F is the direct parametric equivalent with Active product status. This part is suitable for applications requiring RoHS3 compliance and is available in Cut Tape and Digi-Reel packaging configurations. The MMST5401-7-F maintains all electrical and thermal specifications of the original MMST5401-7 while offering improved supply chain availability.

MMST5401Q-7-F is the automotive-qualified variant, carrying AEC-Q101 qualification and Automotive grade designation. This part is appropriate for automotive applications and safety-critical systems requiring automotive-grade component certification. The MMST5401Q-7-F is supplied in Tape & Reel packaging and maintains identical electrical performance to the original part.

Both substitute parts are RoHS3 compliant, addressing environmental and regulatory requirements that may supersede the original non-compliant MMST5401-7. Selection between MMST5401-7-F and MMST5401Q-7-F depends on application requirements: standard industrial applications utilize MMST5401-7-F, while automotive and safety-critical applications utilize MMST5401Q-7-F.

Frequently Asked Questions (FAQ)

Q: Can MMST5401-7-F and MMST5401Q-7-F be used interchangeably with MMST5401-7?

A: Yes. Both substitute parts are parametric equivalents with identical electrical specifications, voltage ratings, current ratings, power dissipation, frequency response, and operating temperature range. All three parts use the SC-70/SOT-323 package and are Surface Mount devices with identical pin configurations and footprints.

Q: What is the difference between MMST5401-7-F and MMST5401Q-7-F?

A: The primary differences are packaging configuration and qualification status. MMST5401-7-F is supplied in Cut Tape and Digi-Reel packaging for standard applications. MMST5401Q-7-F is supplied in Tape & Reel packaging and carries Automotive grade designation with AEC-Q101 qualification, making it suitable for automotive and safety-critical applications.

Q: Why is the original MMST5401-7 discontinued?

A: The MMST5401-7 is discontinued at DiGi Electronics. The substitute parts MMST5401-7-F and MMST5401Q-7-F provide continued availability with improved compliance status (RoHS3 Compliant) and active product status.

Q: Are there any compliance differences between the three parts?

A: Yes. The original MMST5401-7 is RoHS non-compliant. Both substitute parts (MMST5401-7-F and MMST5401Q-7-F) are RoHS3 compliant. Additionally, MMST5401Q-7-F carries AEC-Q101 automotive qualification, while MMST5401-7-F does not.

Q: Which substitute part should be selected for new designs?

A: For standard industrial applications, MMST5401-7-F is the appropriate selection. For automotive applications or designs requiring automotive-grade component certification, MMST5401Q-7-F is the appropriate selection. Both parts are Active and offer superior supply chain availability compared to the discontinued MMST5401-7.

Q: Are the moisture sensitivity levels identical across all three parts?

A: Yes. All three parts (MMST5401-7, MMST5401-7-F, and MMST5401Q-7-F) are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can MMST5401-7-F be used in applications originally designed for MMST5401-7?

A: Yes. MMST5401-7-F is a direct parametric equivalent with identical electrical performance, thermal characteristics, and package form factor. No circuit modifications are required for substitution.