MMSTA63-7-F Equivalent & Substitute Parts

Part Overview

The MMSTA63-7-F is a PNP Darlington bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-323 package. This component operates at a maximum collector current of 500 mA with a 30 V collector-emitter breakdown voltage and delivers 200 mW maximum power dissipation. The device is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. Alternative sources and package configurations may be required due to inventory availability, supply chain considerations, or specific application requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP - Darlington	—
Current - Collector (Ic) (Max)	500	mA
Voltage - Collector Emitter Breakdown (Max)	30	V
Vce Saturation (Max) @ Ib, Ic	1.5V @ 100µA, 100mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	10000 @ 100mA, 5V	—
Power - Max	200	mW
Frequency - Transition	125	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-70, SOT-323	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MMSTA63-7-F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor Type: PNP - Darlington configuration
Maximum Collector Current: 500 mA
Maximum Collector-Emitter Breakdown Voltage: 30 V
Maximum Collector Cutoff Current: 100 nA
Mounting Type: Surface Mount
RoHS3 Compliance and MSL Level 1 rating

Allowable Variations:

Vce Saturation: Values at or below 1.5V @ 100µA, 100mA are acceptable
DC Current Gain (hFE): Values at or above 10000 @ 100mA, 5V are acceptable
Power Dissipation: Values at or above 200 mW are acceptable
Frequency - Transition: Values at or above 125 MHz are acceptable
Operating Temperature Maximum: 150°C or higher is acceptable
Package Configuration: SOT-23, SOT-323, and TO-236 variants are mechanically compatible for surface mount applications

Substitutes meeting these criteria maintain functional equivalence for the MMSTA63-7-F in circuit applications.

Parameter Comparison

Parameter	MMSTA63-7-F (Diodes)	BCV26,215 (Nexperia)	BCV26,235 (NXP)	BCV26E6327HTSA1 (Infineon)	PMBTA64,215 (Nexperia)
Transistor Type	PNP - Darlington	PNP - Darlington	PNP - Darlington	PNP - Darlington	PNP - Darlington
Current - Collector (Ic) (Max)	500 mA	500 mA	500 mA	500 mA	500 mA
Voltage - Collector Emitter Breakdown (Max)	30 V	30 V	30 V	30 V	30 V
Vce Saturation (Max) @ Ib, Ic	1.5V @ 100µA, 100mA	1V @ 100µA, 100mA	1V @ 100µA, 100mA	1V @ 100µA, 100mA	1.5V @ 100µA, 100mA
Current - Collector Cutoff (Max)	100 nA	100 nA	100 nA	100 nA	100 nA
DC Current Gain (hFE) (Min) @ Ic, Vce	10000 @ 100mA, 5V	20000 @ 100mA, 5V	20000 @ 100mA, 5V	20000 @ 100mA, 5V	20000 @ 100mA, 5V
Power - Max	200 mW	250 mW	250 mW	360 mW	250 mW
Frequency - Transition	125 MHz	220 MHz	220 MHz	200 MHz	125 MHz
Operating Temperature (Max)	150°C	150°C	150°C	150°C	150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-70, SOT-323	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Not Specified	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Obsolete	Active

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

BCV26,215 (Nexperia USA Inc.) and PMBTA64,215 (Nexperia USA Inc.) are qualified substitutes with Active product status. Both devices meet or exceed all critical electrical parameters. BCV26,215 offers enhanced performance with 220 MHz transition frequency and 250 mW power rating. PMBTA64,215 maintains the 125 MHz transition frequency specification matching the original device. Both are AEC-Q101 qualified for automotive applications and carry ROHS3 compliance.

BCV26,235 (NXP USA Inc.) is an Active product substitute available in bulk packaging with SOT-23 configuration. This part meets all electrical requirements and provides automotive-grade qualification with AEC-Q101 certification.

Secondary Substitute (Obsolete Status):

BCV26E6327HTSA1 (Infineon Technologies) is classified as Obsolete product status. While electrical parameters are equivalent or superior (360 mW power rating, 200 MHz transition frequency), the obsolete classification indicates this part is no longer in active production. Selection of this substitute should be limited to applications where existing inventory is available and long-term supply is not required.

Compliance Considerations:

All Active substitutes maintain ROHS3 compliance and MSL Level 1 rating consistent with the MMSTA63-7-F. Automotive-grade substitutes (BCV26,215, BCV26,235, PMBTA64,215) carry AEC-Q101 qualification, suitable for automotive and industrial applications requiring enhanced reliability standards.

Frequently Asked Questions (FAQ)

Q: Can the MMSTA63-7-F be directly replaced with BCV26,215 in existing PCB designs?

A: Direct replacement requires package compatibility verification. The MMSTA63-7-F uses SOT-323 (SC-70) packaging, while BCV26,215 uses TO-236AB (SOT-23) packaging. Both are three-terminal surface mount packages, but PCB footprints differ. Physical board layout modification may be necessary.

Q: What is the difference between BCV26,215 and BCV26,235?

A: Both parts are electrically equivalent PNP Darlington transistors with identical electrical specifications. The primary difference is packaging: BCV26,215 is supplied in Tape & Reel format, while BCV26,235 is supplied in Bulk format. Both use SOT-23 package configuration.

Q: Why is BCV26E6327HTSA1 listed as Obsolete?

A: BCV26E6327HTSA1 is classified as Obsolete by Infineon Technologies, indicating the part is no longer in active production. While electrical performance exceeds the MMSTA63-7-F specification, procurement of new inventory is not available through standard distribution channels. This part should only be selected if existing stock is confirmed available.

Q: Are all substitute parts automotive qualified?

A: BCV26,215, BCV26,235, and PMBTA64,215 carry AEC-Q101 automotive qualification. MMSTA63-7-F and BCV26E6327HTSA1 do not specify automotive qualification. Selection should be based on application requirements.

Q: What are the key electrical differences between substitutes?

A: All substitutes maintain the 500 mA collector current and 30 V breakdown voltage specification. Differences include: DC Current Gain (hFE) ranges from 10000 to 20000, Vce Saturation from 1V to 1.5V, Power dissipation from 200 mW to 360 mW, and Transition Frequency from 125 MHz to 220 MHz. Higher values in these parameters indicate enhanced performance capability.

Q: Can PMBTA64,215 be used as a direct substitute for MMSTA63-7-F?

A: PMBTA64,215 meets all critical electrical parameters and maintains the 125 MHz transition frequency of the original device. Package compatibility must be verified: PMBTA64,215 uses TO-236AB (SOT-23) while MMSTA63-7-F uses SOT-323. PCB footprint modification is required for physical substitution.

Q: What is the significance of the higher DC Current Gain (hFE) in substitute parts?

A: Substitute parts specify minimum hFE of 20000 compared to the MMSTA63-7-F minimum of 10000. Higher current gain indicates improved amplification capability and reduced base current requirements for equivalent collector current operation. This represents enhanced performance and is acceptable for substitution purposes.

Q: Are there package compatibility considerations between SOT-323 and SOT-23?

A: SOT-323 (SC-70) and SOT-23 (SC-59, TO-236) are both three-terminal surface mount packages with different physical dimensions and pin spacing. Direct PCB footprint compatibility does not exist. Circuit board redesign or adapter solutions are required for physical substitution between these package types.

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