MMBT2907A-G PNP Bipolar Junction Transistor Equivalent & Substitute Parts

Part Overview

The MMBT2907A-G is a PNP bipolar junction transistor manufactured by Comchip Technology, designed for general-purpose switching and amplification applications in surface mount configurations. This device operates at 60V collector-emitter breakdown voltage with a maximum collector current of 600 mA and transition frequency of 200 MHz.

The MMBT2907A-G is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Ic) Maximum	600	mA
Collector-Emitter Breakdown Voltage (Vceo)	60	V
Vce Saturation @ Ib, Ic	1.6V @ 50mA, 500mA	V
DC Current Gain (hFE) Minimum @ Ic, Vce	100 @ 150mA, 10V	—
Power Dissipation Maximum	250	mW
Transition Frequency	200	MHz
Operating Temperature Range	-55 to 150	°C
Package Type	SOT-23-3 (TO-236-3, SC-59)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MMBT2907A-G are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor Type: PNP
Collector Current (Ic) Maximum: 600 mA
Collector-Emitter Breakdown Voltage (Vceo): 60 V
DC Current Gain (hFE) Minimum: 100 @ 150mA, 10V
Transition Frequency: 200 MHz
Package/Case: SOT-23-3 (TO-236-3, SC-59) or equivalent surface mount package
Mounting Type: Surface Mount

Allowable Variations:

Power Dissipation Maximum: 250 mW or greater
Vce Saturation: 1.6V or lower @ 50mA, 500mA (lower values acceptable)
Collector Cutoff Current (Icbo): Variations acceptable within manufacturer specifications
Operating Temperature Range: -55°C to 150°C minimum (extended ranges acceptable)

All substitute parts listed maintain these critical parameters and are therefore electrically and mechanically compatible with the MMBT2907A-G in standard applications.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vceo (Max) V	Vce Sat @ 50mA, 500mA	hFE (Min) @ 150mA, 10V	Power (Max) mW	Freq MHz	Temp Range °C	Package	Status
MMBT2907A-G	Comchip Technology	600	60	1.6V	100	250	200	-55 to 150	SOT-23-3	Obsolete
MMBT2907A-HF	Comchip Technology	600	60	1.6V	100	300	200	-55 to 150	SOT-23-3	Active
BSR16,215	Nexperia USA Inc.	600	60	1.6V	100	250	200	-55 to 150	TO-236AB	Active
CMPT2907A TR PBFREE	Central Semiconductor Corp	600	60	1.6V	100	350	200	-65 to 150	SOT-23	Active
CMPT2907AE TR PBFREE	Central Semiconductor Corp	600	60	0.7V	100	350	200	-65 to 150	SOT-23	Active
MMBT2907A RFG	Taiwan Semiconductor Corporation	600	60	1.6V	100	350	200	-55 to 150	SOT-23	Active
MMBT2907A-7-F	Diodes Incorporated	600	60	1.6V	100	300	200	-55 to 150	SOT-23-3	Active
MMBT2907A-TP	Micro Commercial Co	600	60	1.6V	100	350	200	-55 to 150	SOT-23	Active
MMBT2907ALT3G	onsemi	600	60	1.6V	100	300	200	-55 to 150	SOT-23-3	Active
PMBT2907A,215	NXP Semiconductors	600	60	1.6V	100	250	200	-55 to 150	TO-236AB	Active
SMMBT2907ALT1G	onsemi	600	60	1.6V	100	300	200	-55 to 150	SOT-23-3	Active

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

MMBT2907ALT3G (onsemi) is the preferred substitute for MMBT2907A-G. This part maintains identical electrical specifications, operates within the same temperature range, and is available in the same SOT-23-3 package. Product status is active with substantial inventory availability (888,991 pieces), ensuring long-term supply continuity. RoHS3 compliance and MSL-1 rating match the original specification.

Alternative Options by Application Context:

For applications requiring enhanced power dissipation capability, CMPT2907A TR PBFREE or CMPT2907AE TR PBFREE (Central Semiconductor Corp) provide 350 mW maximum power rating with extended temperature range (-65°C to 150°C). CMPT2907AE TR PBFREE offers improved saturation voltage (0.7V) compared to the standard 1.6V specification.

For automotive-grade applications with AEC-Q101 qualification, BSR16,215 (Nexperia USA Inc.) or MMBT2907A-7-F (Diodes Incorporated) are qualified options. Both maintain 250 mW power rating and provide automotive-grade reliability assurance.

All listed substitutes maintain RoHS3 compliance and MSL-1 moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can MMBT2907A-G be replaced with any of the listed substitute parts without circuit modification?

A: Yes. All listed substitute parts maintain the critical electrical parameters: 600 mA maximum collector current, 60V collector-emitter breakdown voltage, 100 minimum DC current gain, and 200 MHz transition frequency. Direct substitution is supported for standard switching and amplification applications. Verify package compatibility with PCB layout if transitioning between SOT-23-3 and TO-236AB variants, as these are mechanically equivalent but may have different land pattern requirements.

Q: What is the difference between SOT-23-3 and TO-236AB packages?

A: SOT-23-3 and TO-236AB are mechanically and electrically equivalent surface mount packages for three-terminal devices. Both designations refer to the same physical form factor with identical pin spacing and dimensions. Substitution between parts specified in these packages is supported without modification.

Q: Why do some substitute parts have higher power dissipation ratings (300 mW or 350 mW) compared to the original MMBT2907A-G (250 mW)?

A: Higher power ratings indicate enhanced thermal performance and design margin. These parts are fully compatible with applications designed for 250 mW operation. The increased rating provides additional headroom for thermal management and does not affect electrical compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification. The original MMBT2907A-G also meets RoHS3 requirements. Compliance status is maintained across all substitutes.

Q: What is MSL-1 moisture sensitivity level, and why is it important?

A: MSL-1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control requirements. All listed parts, including the original MMBT2907A-G, carry MSL-1 rating. This eliminates special storage or handling procedures and supports standard manufacturing environments.

Q: Can MMBT2907A-G be used in automotive applications?

A: The base MMBT2907A-G does not carry automotive qualification. For automotive applications requiring AEC-Q101 certification, use BSR16,215 (Nexperia USA Inc.) or MMBT2907A-7-F (Diodes Incorporated) as substitutes.

Q: What is the significance of Vce saturation voltage differences between substitute parts?

A: Vce saturation voltage affects power dissipation in saturated switching applications. The original MMBT2907A-G specifies 1.6V maximum saturation voltage. CMPT2907AE TR PBFREE offers 0.7V saturation voltage, resulting in lower power loss during saturation. Both values are acceptable for standard applications; selection depends on thermal design requirements.

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