FMMT596TC Equivalent & Substitute Parts

Part Overview

The FMMT596TC is a Surface Mount PNP Bipolar Junction Transistor manufactured by Diodes Incorporated, designed for general-purpose switching and amplification applications. This device features a 200V collector-emitter breakdown voltage rating, 300mA maximum collector current, and 500mW power dissipation capability in a compact SOT-23-3 package.

The FMMT596TC carries an Obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	300	mA
Voltage - Collector Emitter Breakdown (Max)	200	V
Vce Saturation (Max) @ Ib, Ic	350mV @ 25mA, 250mA	V
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) Min @ Ic, Vce	85 @ 250mA, 10V	—
Power - Max	500	mW
Frequency - Transition	150	MHz
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	SOT-23-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the FMMT596TC is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameters (Must Match):

Transistor Type: PNP
Maximum Collector Current (Ic): 300 mA
Collector-Emitter Breakdown Voltage: 200 V
Vce Saturation: 350mV @ 25mA, 250mA
Collector Cutoff Current: 100 nA
DC Current Gain (hFE): 85 minimum @ 250mA, 10V
Maximum Power Dissipation: 500 mW
Transition Frequency: 150 MHz
Operating Temperature Range: -55°C to 150°C

Mechanical Parameters (Must Match):

Package Type: SOT-23-3
Mounting Type: Surface Mount

Compliance Parameters (Must Match):

RoHS3 Compliance
Moisture Sensitivity Level: 1 (Unlimited)

The FMMT596TA meets all specified electrical and mechanical parameters and qualifies as a parametric equivalent substitute.

Parameter Comparison

Parameter	FMMT596TC	FMMT596TA	Match
Manufacturer	Diodes Incorporated	Diodes Incorporated	✓
Transistor Type	PNP	PNP	✓
Current - Collector (Ic) Max	300 mA	300 mA	✓
Voltage - Collector Emitter Breakdown (Max)	200 V	200 V	✓
Vce Saturation (Max) @ Ib, Ic	350mV @ 25mA, 250mA	350mV @ 25mA, 250mA	✓
Current - Collector Cutoff (Max)	100 nA	100 nA	✓
DC Current Gain (hFE) Min @ Ic, Vce	85 @ 250mA, 10V	85 @ 250mA, 10V	✓
Power - Max	500 mW	500 mW	✓
Frequency - Transition	150 MHz	150 MHz	✓
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)	✓
Package / Case	SOT-23-3	SOT-23-3	✓
Mounting Type	Surface Mount	Surface Mount	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓
Product Status	Obsolete	Active	—

Engineering Selection Recommendations

The FMMT596TA is a direct parametric equivalent to the FMMT596TC. Both components are manufactured by Diodes Incorporated and share identical electrical specifications, mechanical packaging, and compliance certifications.

Selection Basis:

The FMMT596TA is recommended for new designs and as a replacement for obsolete FMMT596TC inventory. The substitute part maintains full compatibility across all specified parameters, including collector current rating, breakdown voltage, saturation characteristics, current gain, power dissipation, and frequency response.

Both parts comply with ROHS3 requirements and carry MSL Level 1 (Unlimited) moisture sensitivity classification, ensuring equivalent handling and storage requirements.

The primary distinction between the two parts is product status: the FMMT596TC is classified as Obsolete, while the FMMT596TA maintains Active status with higher inventory availability (1846 pieces versus 966 pieces).

Frequently Asked Questions (FAQ)

Q: Can the FMMT596TA be used as a direct replacement for the FMMT596TC in existing designs?

A: Yes. The FMMT596TA is a parametric equivalent with identical electrical and mechanical specifications. No circuit modifications are required for substitution.

Q: Are there any differences in package dimensions between these parts?

A: No. Both the FMMT596TC and FMMT596TA use the SOT-23-3 package with identical mechanical specifications. PCB footprints and assembly processes remain unchanged.

Q: Do both parts require the same handling procedures?

A: Yes. Both components carry MSL Level 1 (Unlimited) moisture sensitivity classification, requiring identical storage and handling protocols.

Q: What is the significance of the product status difference?

A: The FMMT596TC is classified as Obsolete, indicating discontinued manufacturing. The FMMT596TA maintains Active status with ongoing production and supply availability. For new designs and long-term supply assurance, the FMMT596TA is the appropriate selection.

Q: Are the RoHS and REACH compliance statuses identical?

A: Yes. Both parts are ROHS3 Compliant and REACH Unaffected, ensuring equivalent environmental and regulatory compliance.

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

A: Yes. Both parts share identical transition frequency specifications (150 MHz) and saturation characteristics, supporting equivalent performance in switching applications within the specified operating parameters.

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