MMBT200A Equivalent & Substitute Parts

Part Overview

The MMBT200A is a surface-mount PNP bipolar junction transistor manufactured by onsemi, rated for 45 V collector-emitter breakdown voltage and 500 mA maximum collector current. The device is packaged in SOT-23-3 (TO-236-3) configuration and is currently classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility within the specified parameter ranges while meeting current manufacturing and compliance standards.

Key Parameters

Parameter	MMBT200A Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) (Max)	500	mA
Voltage - Collector Emitter Breakdown (Max)	45	V
Vce Saturation (Max) @ Ib, Ic	400mV @ 20mA, 200mA	V
Current - Collector Cutoff (Max)	50	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	300 @ 10mA, 1V	—
Power - Max	350	mW
Frequency - Transition	250	MHz
Operating Temperature	-55 to 150	°C
Package / Case	SOT-23-3	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MMBT200A is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: PNP (mandatory)
Collector-Emitter Breakdown Voltage: 45 V minimum
Maximum Collector Current: 500 mA minimum
Package Type: SOT-23-3 / TO-236-3 (mandatory for mechanical compatibility)
Mounting Type: Surface Mount (mandatory)
Moisture Sensitivity Level: 1 (Unlimited) or equivalent

Secondary Compatibility Parameters:

Vce Saturation characteristics
DC Current Gain (hFE)
Power dissipation rating
Operating temperature range
Transition frequency

Substitute parts are grouped into two categories:

Category 1: Direct Electrical Equivalents (500 mA Collector Current) Parts maintaining the full 500 mA collector current specification with 45 V or higher breakdown voltage rating. These parts provide direct functional replacement with identical current handling capability.

Category 2: Reduced Current Equivalents (100 mA Collector Current) Parts with reduced maximum collector current (100 mA) but maintaining 45 V breakdown voltage and SOT-23-3 packaging. These parts are suitable for applications where the full 500 mA current is not required and provide enhanced performance in lower-current operating conditions.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce(br) V	Vce Sat @ Ib,Ic	hFE (Min) @ Ic,Vce	Power mW	fT MHz	Temp °C	Status
MMBT200A	onsemi	500	45	400mV @ 20mA, 200mA	300 @ 10mA, 1V	350	250	-55 to 150	Obsolete
BCX17LT1G	onsemi	500	45	620mV @ 50mA, 500mA	100 @ 100mA, 1V	300	—	-55 to 150	Active
NSVBCX17LT1G	onsemi	500	45	620mV @ 50mA, 500mA	100 @ 100mA, 1V	225	—	-55 to 150	Active
2SA1313-Y,LF	Toshiba	500	50	250mV @ 10mA, 100mA	120 @ 100mA, 1V	200	200	-55 to 150	Active
BC807,215	Nexperia	500	45	700mV @ 50mA, 500mA	100 @ 100mA, 1V	250	80	-55 to 150	Active
BC807-16-7-F	Diodes Inc.	500	45	700mV @ 50mA, 500mA	100 @ 100mA, 1V	310	100	-55 to 150	Active
BC807-25-TP	Micro Commercial Co	500	45	700mV @ 50mA, 500mA	160 @ 100mA, 1V	300	100	-55 to 150	Active
BC807-40-7-F	Diodes Inc.	500	45	700mV @ 50mA, 500mA	250 @ 100mA, 1V	310	100	-55 to 150	Active
BC857B-7-F	Diodes Inc.	100	45	650mV @ 5mA, 100mA	220 @ 2mA, 5V	300	200	-65 to 150	Active
BC857BE6327HTSA1	Infineon	100	45	650mV @ 5mA, 100mA	220 @ 2mA, 5V	330	250	-55 to 150	Last Time Buy
BC857C-7-F	Diodes Inc.	100	45	650mV @ 5mA, 100mA	420 @ 2mA, 5V	300	200	-65 to 150	Active

Engineering Selection Recommendations

For Direct Replacement (500 mA Applications):

The BCX17LT1G from onsemi is the primary direct substitute for the MMBT200A. Both devices are manufactured by onsemi, share identical collector current and breakdown voltage specifications, and are packaged in SOT-23-3. The BCX17LT1G is in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. This part is recommended for applications requiring the full 500 mA collector current specification.

The NSVBCX17LT1G variant of the BCX17 series includes AEC-Q101 automotive qualification and is suitable for automotive-grade applications. This part maintains the same electrical specifications as BCX17LT1G with automotive-grade certification.

The 2SA1313-Y,LF from Toshiba Semiconductor provides an alternative 500 mA substitute with 50 V breakdown voltage (exceeding the 45 V requirement) and active production status. This part offers superior saturation voltage characteristics at lower current levels.

The BC807 series from Nexperia and Diodes Incorporated (BC807,215, BC807-16-7-F, BC807-25-TP, BC807-40-7-F) provides multiple 500 mA alternatives in active production. These parts maintain 45 V breakdown voltage and SOT-23-3 packaging with ROHS3 compliance. Variants differ in DC current gain specifications and transition frequency characteristics.

For Reduced Current Applications (100 mA Maximum):

The BC857 series (BC857B-7-F, BC857C-7-F) from Diodes Incorporated and BC857BE6327HTSA1 from Infineon are suitable for applications where collector current does not exceed 100 mA. These parts maintain 45 V breakdown voltage and SOT-23-3 packaging with active or last-time-buy production status. The BC857C-7-F offers the highest DC current gain (420 @ 2mA, 5V) among the BC857 variants.

Compliance and Production Status:

All recommended active substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Parts in active production status are preferred for new designs. The BC857BE6327HTSA1 is designated as Last Time Buy and should be evaluated for long-term availability before selection for new production designs.

Frequently Asked Questions (FAQ)

Q: Can the MMBT200A be directly replaced with a BC857 series transistor?

A: BC857 series transistors are not direct replacements for the MMBT200A. The BC857 series is rated for maximum 100 mA collector current, while the MMBT200A is rated for 500 mA. BC857 parts are suitable only for applications where the collector current does not exceed 100 mA. For applications requiring the full 500 mA specification, use BCX17LT1G, 2SA1313-Y,LF, or BC807 series alternatives.

Q: What is the difference between BCX17LT1G and NSVBCX17LT1G?

A: Both parts share identical electrical specifications (500 mA, 45 V, SOT-23-3). The NSVBCX17LT1G includes AEC-Q101 automotive qualification and automotive-grade designation. Select NSVBCX17LT1G for automotive applications requiring AEC-Q101 compliance; select BCX17LT1G for general industrial applications.

Q: Are all substitute parts available in the same package as the MMBT200A?

A: Yes. All listed substitute parts are packaged in SOT-23-3 (TO-236-3) surface-mount configuration, matching the MMBT200A package specification. Mechanical compatibility with existing PCB layouts is maintained.

Q: Which substitute part offers the best saturation voltage performance?

A: The 2SA1313-Y,LF from Toshiba provides the lowest saturation voltage at 250 mV (@ 10 mA, 100 mA), compared to 400 mV for the MMBT200A and 620-700 mV for other substitutes. This characteristic is beneficial for low-voltage switching applications.

Q: Can I use a BC807-40-7-F in place of a BC807-16-7-F?

A: Both parts are electrically compatible with identical collector current (500 mA), breakdown voltage (45 V), and package (SOT-23-3). The primary difference is DC current gain: BC807-40-7-F specifies 250 @ 100 mA, 1V, while BC807-16-7-F specifies 100 @ 100 mA, 1V. Selection depends on the required current gain for your circuit design.

Q: What is the production status of the MMBT200A, and why is substitution necessary?

A: The MMBT200A is classified as obsolete and no longer in active production. Substitution is necessary for new designs, production continuity, and long-term component availability. Active production alternatives such as BCX17LT1G, BC807 series, and 2SA1313-Y,LF ensure design continuity and supply chain reliability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status. The MMBT200A is classified as REACH Unaffected, and all active substitutes maintain equivalent REACH and ROHS compliance designations.

Q: What is the operating temperature range difference between MMBT200A and BC857 series?

A: The MMBT200A operates from -55°C to 150°C. BC857B-7-F and BC857C-7-F extend the lower temperature limit to -65°C, providing wider temperature range coverage. This extended range is beneficial for applications requiring operation at lower ambient temperatures.

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