FMMTA06TA Equivalent & Substitute Parts

Part Overview

The FMMTA06TA is an NPN bipolar junction transistor (BJT) manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-23-3 package. This device operates at 80 V collector-emitter breakdown voltage with a maximum collector current of 500 mA and is rated for 330 mW power dissipation. The FMMTA06TA is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across critical parameters including voltage ratings, current capacity, saturation characteristics, and thermal operating range.

Key Parameters

Parameter	FMMTA06TA Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	80	V
Current - Collector (Ic) (Max)	500	mA
Vce Saturation (Max) @ Ib, Ic	250mV @ 10mA, 100mA	V
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	50 @ 10mA, 1V	—
Power - Max	330	mW
Frequency - Transition	100	MHz
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the FMMTA06TA is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 80 V
Current - Collector (Ic) (Max): 500 mA
Vce Saturation (Max) @ Ib, Ic: 250mV @ 10mA, 100mA
Current - Collector Cutoff (Max): 100 nA or lower
Operating Temperature Range: -55°C to 150°C minimum
Package / Case: SOT-23-3 (TO-236-3, SC-59)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

DC Current Gain (hFE): May exceed minimum specification
Power - Max: May be lower than 330 mW if other parameters are met
Frequency - Transition: May exceed 100 MHz
Product Status: Active substitutes preferred over obsolete

Substitute parts are grouped into two categories: direct equivalents from Diodes Incorporated (same manufacturer) and cross-manufacturer alternatives that meet all mandatory electrical and mechanical criteria.

Parameter Comparison

Parameter	FMMTA06TA	MMBTA06-7-F	2SD1782KT146Q	2SD1782KT146R	CMPT8099 TR PBFREE	MMBTA06LT1G	PMBTA06,215	PMBTA06,235
Manufacturer	Diodes Inc.	Diodes Inc.	Rohm Semi.	Rohm Semi.	Central Semi.	onsemi	Nexperia	Nexperia
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	80 V	80 V	80 V	80 V	80 V	80 V	80 V	80 V
Current - Collector (Ic) (Max)	500 mA	500 mA	500 mA	500 mA	500 mA	500 mA	500 mA	500 mA
Vce Saturation (Max) @ Ib, Ic	250mV @ 10mA, 100mA	250mV @ 10mA, 100mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	300mV @ 10mA, 100mA	250mV @ 10mA, 100mA	250mV @ 10mA, 100mA	250mV @ 10mA, 100mA
Current - Collector Cutoff (Max)	100 nA	100 nA	500 nA	500 nA	100 nA	100 nA	50 nA	50 nA
DC Current Gain (hFE) (Min) @ Ic, Vce	50 @ 10mA, 1V	100 @ 100mA, 1V	120 @ 100mA, 3V	180 @ 100mA, 3V	100 @ 1mA, 5V	100 @ 100mA, 1V	100 @ 100mA, 1V	100 @ 100mA, 1V
Power - Max	330 mW	300 mW	200 mW	200 mW	350 mW	225 mW	250 mW	250 mW
Frequency - Transition	100 MHz	100 MHz	120 MHz	120 MHz	150 MHz	100 MHz	100 MHz	100 MHz
Operating Temperature	-55 to 150°C	-55 to 150°C	150°C (TJ)	150°C (TJ)	-65 to 150°C	-55 to 150°C	150°C (TJ)	150°C (TJ)
Package / Case	SOT-23-3	SOT-23-3	SOT-23-3	SOT-23-3	SOT-23	SOT-23-3	TO-236AB	TO-236AB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Tier 1 - Direct Manufacturer Equivalents (Diodes Incorporated):

MMBTA06-7-F is the primary substitute from the original manufacturer. This part maintains identical electrical specifications to the FMMTA06TA across all critical parameters including voltage rating, current capacity, saturation voltage, and operating temperature range. The MMBTA06-7-F carries Active product status with significantly higher inventory availability (215,400 units), ensuring supply chain continuity. This part is recommended as the first choice for direct replacement.

Tier 2 - Cross-Manufacturer Equivalents (Identical Electrical Specifications):

MMBTA06LT1G (onsemi) and PMBTA06,215 / PMBTA06,235 (Nexperia) provide full electrical equivalence to the FMMTA06TA. All three parts maintain the 80 V breakdown voltage, 500 mA collector current, 250 mV saturation voltage at specified bias conditions, and -55°C to 150°C operating range. These parts are Active status with substantial inventory levels. PMBTA06,215 carries AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components.

Tier 3 - Functional Equivalents (Minor Parameter Variations):

2SD1782KT146Q and 2SD1782KT146R (Rohm Semiconductor) meet all mandatory electrical criteria with the following allowable variations: higher saturation voltage (500 mV vs. 250 mV), higher collector cutoff current (500 nA vs. 100 nA), and higher transition frequency (120 MHz vs. 100 MHz). These parts are suitable for applications where the higher saturation voltage and cutoff current do not impact circuit performance. Both variants are Active status.

CMPT8099 TR PBFREE (Central Semiconductor Corp) provides functional equivalence with higher transition frequency (150 MHz) and slightly higher saturation voltage (300 mV). This part extends the operating temperature range to -65°C and offers the highest power rating (350 mW) among all substitutes.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage practices. PMBTA06,215 includes AEC-Q101 automotive qualification for applications requiring automotive-grade reliability.

Frequently Asked Questions (FAQ)

Q: Can MMBTA06-7-F directly replace FMMTA06TA without circuit modification?

A: Yes. MMBTA06-7-F maintains identical electrical specifications across all critical parameters: 80 V breakdown voltage, 500 mA maximum collector current, 250 mV saturation voltage at 10 mA / 100 mA bias, 100 nA collector cutoff current, and -55°C to 150°C operating temperature range. The part is pin-compatible in the SOT-23-3 package and requires no circuit changes.

Q: What is the difference between PMBTA06,215 and PMBTA06,235?

A: Both parts are electrically identical and carry the same specifications. The difference lies in packaging designation and supplier tracking. Both are manufactured by Nexperia USA Inc., maintain Active product status, and provide full electrical equivalence to the FMMTA06TA. Selection between these variants depends on supplier availability and internal part numbering systems.

Q: Are the Rohm 2SD1782 variants suitable replacements?

A: The 2SD1782KT146Q and 2SD1782KT146R are functional equivalents with allowable variations in saturation voltage (500 mV vs. 250 mV) and collector cutoff current (500 nA vs. 100 nA). These parts are suitable for applications where the higher saturation voltage does not degrade circuit performance. The higher transition frequency (120 MHz) provides additional margin for high-speed applications. Verify saturation voltage requirements in your specific circuit before selection.

Q: What is the advantage of CMPT8099 TR PBFREE over other substitutes?

A: CMPT8099 TR PBFREE offers the highest transition frequency (150 MHz) and power rating (350 mW) among all substitutes, providing additional performance margin for high-frequency and high-power applications. The extended operating temperature range (-65°C to 150°C) accommodates more demanding thermal environments. Saturation voltage is 300 mV, which is intermediate between the FMMTA06TA (250 mV) and Rohm variants (500 mV).

Q: Are all substitute parts available in the same package?

A: All substitute parts are available in SOT-23-3 package variants (TO-236-3, SC-59 designations). PMBTA06,215 and PMBTA06,235 use the TO-236AB supplier package designation, which is mechanically and electrically compatible with SOT-23-3. No package conversion is required for any substitute.

Q: Which substitute offers the best supply chain availability?

A: MMBTA06LT1G (onsemi) provides the highest inventory level at 2,255,600 units in stock, followed by MMBTA06-7-F (Diodes Incorporated) at 215,400 units. Both parts maintain Active product status and offer long-term supply security. MMBTA06LT1G is recommended for applications requiring maximum supply chain assurance.

Q: Do all substitutes meet RoHS and MSL requirements?

A: Yes. All substitute parts listed are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the FMMTA06TA specifications. No additional handling or storage procedures are required when transitioning to any substitute part.

Q: Can I use PMBTA06,215 in automotive applications?

A: Yes. PMBTA06,215 carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. This qualification provides additional reliability assurance for automotive circuit designs. Other substitutes do not carry explicit automotive qualification but remain suitable for non-automotive applications.

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