FMMT717TC PNP Bipolar Transistor Equivalent & Substitute Parts

Part Overview

The FMMT717TC is a PNP bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-23-3 package. This device is rated for 12 V collector-emitter breakdown voltage with a maximum collector current of 2.5 A and 625 mW power dissipation. The FMMT717TC is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	12	V
Current - Collector (Ic) (Max)	2.5	A
Power - Max	625	mW
Frequency - Transition	110	MHz
Vce Saturation (Max) @ Ib, Ic	220 mV @ 50 mA, 2.5 A	—
DC Current Gain (hFE) (Min) @ Ic, Vce	300 @ 100 mA, 2 V	—
Operating Temperature Range	-55 to 150	°C
Package / Case	SOT-23-3 (TO-236-3, SC-59)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitute parts for the FMMT717TC are classified into two categories based on electrical parameter alignment:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 12 V collector-emitter breakdown voltage, 2.5 A maximum collector current, 625 mW power dissipation, 110 MHz transition frequency, and 220 mV saturation voltage at rated conditions. These parts are direct functional replacements with no circuit redesign required.

Functional Alternatives share the same voltage rating (12 V) and package form factor (SOT-23-3) but operate within reduced current and power envelopes. These parts are suitable for applications where the full 2.5 A collector current is not required, provided the circuit design accommodates the lower current specifications.

The critical parameters determining substitution eligibility are:

Collector-emitter breakdown voltage (12 V minimum)
Package type (SOT-23-3 surface mount)
Transistor polarity (PNP)
Operating temperature range (-55°C to 150°C)

Parameter Comparison

Parameter	FMMT717TC	FMMT717TA	FMMT717QTA	FMMTL717TA	2SB1690KT146	NSV12200LT1G
Manufacturer	Diodes Inc.	Diodes Inc.	Diodes Inc.	Diodes Inc.	Rohm Semi.	onsemi
Product Status	Obsolete	Active	Active	Active	Active	Active
Transistor Type	PNP	PNP	PNP	PNP	PNP	PNP
Vce Breakdown (Max)	12 V	12 V	12 V	12 V	12 V	12 V
Ic (Max)	2.5 A	2.5 A	2.5 A	1.25 A	2 A	2 A
Power (Max)	625 mW	625 mW	625 mW	500 mW	200 mW	540 mW
Frequency - Transition	110 MHz	110 MHz	110 MHz	205 MHz	360 MHz	100 MHz
Vce Saturation (Max)	220 mV @ 50 mA, 2.5 A	220 mV @ 50 mA, 2.5 A	220 mV @ 50 mA, 2.5 A	290 mV @ 50 mA, 1.25 A	180 mV @ 50 mA, 1 A	180 mV @ 200 mA, 2 A
DC Current Gain (hFE) (Min)	300 @ 100 mA, 2 V	300 @ 100 mA, 2 V	300 @ 100 mA, 2 V	300 @ 100 mA, 2 V	270 @ 200 mA, 2 V	250 @ 500 mA, 2 V
Operating Temperature	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	to 150°C	-55 to 150°C
Package	SOT-23-3	SOT-23-3	SOT-23-3	SOT-23-3	SOT-23-3	SOT-23-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
AEC-Q101 Qualified	No	No	Yes	No	No	Yes

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalents):

FMMT717TA and FMMT717QTA are parametric equivalents to the FMMT717TC, maintaining identical electrical specifications across all critical parameters. Both parts are active products with full availability. FMMT717TA is supplied in Cut Tape and Digi-Reel packaging with 35,381 units in stock. FMMT717QTA is supplied in Tape & Reel packaging with 863 units in stock and carries AEC-Q101 automotive qualification, making it suitable for automotive applications requiring formal qualification documentation.

Functional Alternatives with Reduced Current Rating:

FMMTL717TA is an active Diodes Incorporated product suitable for applications where collector current does not exceed 1.25 A. This part offers higher transition frequency (205 MHz) compared to the original specification and maintains the same voltage rating and package form factor. With 56,100 units in stock, this part provides extended availability.

Cross-Manufacturer Alternatives:

2SB1690KT146 (Rohm Semiconductor) and NSV12200LT1G (onsemi) are functional alternatives rated for 2 A collector current at 12 V breakdown voltage in SOT-23-3 packages. Both parts are active products with significant inventory availability. NSV12200LT1G carries AEC-Q101 automotive qualification. These parts operate within reduced power envelopes (200 mW and 540 mW respectively) compared to the original 625 mW specification and are suitable for applications where the full power dissipation capability is not required.

Frequently Asked Questions (FAQ)

Q: Can FMMT717TA be used as a direct replacement for FMMT717TC?

A: Yes. FMMT717TA is a parametric equivalent with identical electrical specifications: 12 V breakdown voltage, 2.5 A maximum collector current, 625 mW power dissipation, 110 MHz transition frequency, and 220 mV saturation voltage. The only difference is packaging format (Cut Tape vs. original packaging) and active product status.

Q: What is the difference between FMMT717TA and FMMT717QTA?

A: Both parts are parametric equivalents with identical electrical specifications. FMMT717QTA carries AEC-Q101 automotive qualification and is supplied in Tape & Reel packaging. FMMT717TA is supplied in Cut Tape and Digi-Reel packaging. Selection depends on packaging requirements and whether automotive qualification documentation is required.

Q: Can FMMTL717TA be used in place of FMMT717TC?

A: FMMTL717TA is suitable only for applications where the maximum collector current requirement does not exceed 1.25 A. This part is rated for half the collector current of the original device. Circuit redesign or current limiting analysis is required to confirm compatibility.

Q: What are the key differences between the Diodes Incorporated parts and the cross-manufacturer alternatives?

A: Diodes Incorporated parts (FMMT717TA, FMMT717QTA, FMMTL717TA) maintain the original electrical specifications or provide higher performance variants. Cross-manufacturer alternatives (2SB1690KT146 from Rohm, NSV12200LT1G from onsemi) operate at reduced collector current (2 A) and power dissipation levels. All parts maintain the 12 V breakdown voltage and SOT-23-3 package compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the original FMMT717TC.

Q: Which substitute parts have automotive qualification?

A: FMMT717QTA and NSV12200LT1G both carry AEC-Q101 automotive qualification. These parts are suitable for automotive applications requiring formal qualification documentation.

Q: What is the inventory status of available substitutes?

A: FMMTL717TA has the highest inventory availability with 56,100 units in stock. FMMT717TA has 35,381 units. NSV12200LT1G has 12,863 units. 2SB1690KT146 has 6,300 units. FMMT717QTA has 863 units in stock.

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