FMMT620QTA Equivalent & Substitute Parts

Part Overview

The FMMT620QTA is an NPN bipolar junction transistor (BJT) manufactured by Diodes Incorporated, designed for low-saturation switching applications. This surface-mount device operates at 80 V collector-emitter breakdown voltage with a maximum collector current of 1.5 A and transition frequency of 160 MHz. The part is packaged in SOT-23-3 (TO-236-3) configuration and is qualified to AEC-Q101 automotive standards. The FMMT620QTA is currently in active production status. Identifying equivalent and substitute parts is necessary to support supply chain flexibility, manage inventory across multiple packaging formats, and ensure design continuity when primary part availability is constrained.

Substiute Parts

FMMT620QTA

Diodes IncorporatedIn Stock: 13058FMMT620QTA Datasheet

Current PartRFQ

FMMT620TA

Diodes IncorporatedIn Stock: 6588FMMT620TA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FMMT620QTA is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Parameters (Must Match):

• Transistor type: NPN
• Voltage - Collector Emitter Breakdown (Max): 80 V
• Current - Collector (Ic) (Max): 1.5 A
• DC Current Gain (hFE) (Min): 300 @ 200mA, 2V
• Power - Max: 625 mW
• Frequency - Transition: 160 MHz
• Operating Temperature Range: -55°C to 150°C

Mechanical Parameters (Must Match):

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

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The FMMT620TA meets all substitution criteria. The primary difference between the FMMT620QTA and FMMT620TA is the packaging format: the FMMT620QTA is supplied in Tape & Reel (TR) configuration, while the FMMT620TA is supplied in Cut Tape (CT) and Digi-Reel® format. Both parts share identical electrical specifications and the same SOT-23-3 package footprint, enabling direct functional substitution in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the FMMT620QTA and FMMT620TA are active production parts from Diodes Incorporated with identical electrical and thermal specifications. Selection between these parts is based on packaging and supply chain requirements rather than functional performance.

FMMT620QTA Selection Criteria:

• Required for high-volume automated assembly processes utilizing tape-and-reel feeding systems
• Preferred when component handling and storage protocols specify reel-based packaging
• Suitable for production environments with established reel-based component management

FMMT620TA Selection Criteria:

• Appropriate for lower-volume production runs or manual assembly operations
• Suitable when cut-tape or Digi-Reel® packaging aligns with existing supply chain infrastructure
• Compatible with component distribution systems utilizing non-reel formats

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for automotive and industrial applications. The AEC-Q101 qualification of the FMMT620QTA is not duplicated in the provided specification for FMMT620TA; however, both parts share the same base product number (FMMT620) and electrical characteristics, indicating common design and manufacturing lineage.

Frequently Asked Questions (FAQ)

Q: Can FMMT620TA be used as a direct replacement for FMMT620QTA in a circuit design?

A: Yes. The FMMT620TA is electrically and mechanically equivalent to the FMMT620QTA. Both parts feature identical NPN transistor characteristics, 80 V breakdown voltage, 1.5 A maximum collector current, 625 mW power rating, and 160 MHz transition frequency. The SOT-23-3 package footprint is identical, enabling direct PCB-level substitution without design modification.

Q: What is the difference between FMMT620QTA and FMMT620TA?

A: The primary difference is packaging format. The FMMT620QTA is supplied in Tape & Reel (TR) configuration, while the FMMT620TA is supplied in Cut Tape (CT) and Digi-Reel® format. All electrical specifications, thermal characteristics, and compliance certifications are identical.

Q: Are both parts suitable for automotive applications?

A: The FMMT620QTA carries AEC-Q101 automotive qualification. The FMMT620TA specification provided does not explicitly list AEC-Q101 qualification; however, both parts are manufactured by Diodes Incorporated under the same base product number (FMMT620) and share identical electrical characteristics. Confirmation of automotive qualification status for the FMMT620TA should be obtained from the manufacturer's current datasheet.

Q: What is the significance of the Moisture Sensitivity Level (MSL) rating listed for FMMT620TA?

A: The FMMT620TA is rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. This classification simplifies inventory management and reduces requirements for controlled storage environments compared to higher MSL ratings.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: Yes. Both parts feature a 160 MHz transition frequency and identical DC current gain specifications (300 @ 200mA, 2V), supporting high-frequency switching applications within the specified operating parameters. The identical saturation voltage characteristics (200 mV maximum) ensure consistent switching performance.

Q: What is the operating temperature range for both parts?

A: Both the FMMT620QTA and FMMT620TA operate across a junction temperature range of -55°C to 150°C, supporting extended temperature applications in automotive, industrial, and harsh environment deployments.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.