FMMT720-7 Equivalent & Substitute Parts

Part Overview

The FMMT720-7 is a Surface Mount PNP Bipolar Junction Transistor manufactured by Diodes Incorporated, rated for 40V collector-emitter breakdown voltage and 1.5A maximum collector current. This component is designed for automotive applications and meets AEC-Q101 qualification standards. The part is currently classified as obsolete, making identification of equivalent substitute components necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

FMMT720-7

Diodes IncorporatedIn Stock: 1087FMMT720-7 Datasheet

Current PartRFQ

FMMT720TA

Diodes IncorporatedIn Stock: 105314FMMT720TA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FMMT720-7 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Transistor polarity: PNP configuration
• Maximum collector current: 1.5 A
• Maximum collector-emitter breakdown voltage: 40 V
• Saturation voltage characteristics: 330mV @ 100mA, 1.5A
• Collector cutoff current: 100nA
• DC current gain (hFE): minimum 300 @ 100mA, 2V
• Maximum power dissipation: 625 mW
• Operating temperature range: -55°C to 150°C

Mechanical Equivalence Criteria:

• Package type: SOT-23-3 (TO-236-3, SC-59)
• Mounting configuration: Surface Mount

Compliance Equivalence Criteria:

• RoHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)

Substitute parts must satisfy all listed parameters without deviation. Transition frequency may vary within the specified range without affecting functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The FMMT720TA serves as a direct parametric equivalent to the obsolete FMMT720-7. Both components are manufactured by Diodes Incorporated and share identical electrical specifications across all critical parameters including collector current, breakdown voltage, saturation characteristics, and gain specifications.

Selection Basis:

The FMMT720TA is recommended for applications currently using FMMT720-7 based on the following factors:

• Product Status: FMMT720TA maintains Active status with substantial inventory availability (105,300 pieces), whereas FMMT720-7 is classified as Obsolete with limited stock (1,073 pieces).
• Compliance Certification: Both parts maintain ROHS3 compliance and identical Moisture Sensitivity Level 1 rating, ensuring regulatory and environmental compatibility.
• Electrical Performance: All critical electrical parameters are identical, including maximum ratings, saturation voltage, and DC current gain specifications.
• Package Compatibility: Both components utilize SOT-23-3 surface mount packaging, enabling direct board-level substitution without layout modifications.
• Transition Frequency: The FMMT720TA exhibits a 10MHz higher transition frequency (190MHz versus 180MHz), which represents improved performance characteristics within the same functional class.

Frequently Asked Questions (FAQ)

Q: Can FMMT720TA be used as a direct replacement for FMMT720-7 in existing designs?

A: Yes. The FMMT720TA is a parametric equivalent with identical electrical specifications across all critical parameters. Both components share the same SOT-23-3 package configuration and surface mount characteristics, enabling direct substitution without circuit modification.

Q: What is the primary difference between FMMT720-7 and FMMT720TA?

A: The primary difference is product status and availability. FMMT720-7 is obsolete with limited inventory, while FMMT720TA is active with substantial stock. The FMMT720TA also features a 10MHz higher transition frequency (190MHz versus 180MHz). All other electrical and mechanical parameters are identical.

Q: Are there packaging differences between these parts?

A: No. Both FMMT720-7 and FMMT720TA utilize identical SOT-23-3 surface mount packaging (also designated TO-236-3 or SC-59). No board layout or assembly process modifications are required for substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both FMMT720-7 and FMMT720TA are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). They maintain equivalent environmental and regulatory compliance profiles.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by equivalence in the following parameters: PNP transistor type, 1.5A maximum collector current, 40V collector-emitter breakdown voltage, 330mV saturation voltage at specified conditions, 100nA collector cutoff current, 300 minimum DC current gain, and 625mW maximum power dissipation. Operating temperature range (-55°C to 150°C) must also be maintained.

Q: Is the higher transition frequency of FMMT720TA (190MHz vs 180MHz) a concern for compatibility?

A: No. The higher transition frequency represents improved performance characteristics. Since the FMMT720TA meets or exceeds all specified electrical parameters of the FMMT720-7, the increased frequency capability does not create compatibility issues and may provide performance benefits in high-frequency applications.

Q: What inventory considerations should be evaluated when selecting between these parts?

A: FMMT720-7 has limited inventory (1,073 pieces) and obsolete status, making long-term availability uncertain. FMMT720TA has substantial inventory (105,300 pieces) and active product status, ensuring reliable supply for current and future production requirements.