MMBT3906-13 Equivalent & Substitute Parts

Part Overview

The MMBT3906-13 is a PNP bipolar junction transistor manufactured by Diodes Incorporated, designed for general-purpose switching and amplification applications. This device features a 40 V collector-emitter breakdown voltage, 200 mA maximum collector current, and 250 MHz transition frequency in a surface-mount SOT-23-3 package. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	200	mA
Voltage - Collector Emitter Breakdown (Max)	40	V
Vce Saturation (Max) @ Ib, Ic	400 mV @ 5 mA, 50 mA	—
Current - Collector Cutoff (Max)	50	nA
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 10 mA, 1 V	—
Power - Max	310	mW
Frequency - Transition	250	MHz
Operating Temperature Range	-55 to 150	°C
Package / Case	SOT-23-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MMBT3906-13 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

Transistor polarity: PNP
Maximum collector current: 200 mA
Collector-emitter breakdown voltage: 40 V
Vce saturation characteristics: 400 mV @ 5 mA, 50 mA
DC current gain (hFE): minimum 100 @ 10 mA, 1 V
Transition frequency: 250 MHz
Operating temperature range: -55°C to 150°C

Mechanical Parameters (Must Match):

Package type: SOT-23-3 (TO-236-3, SC-59)
Mounting type: Surface Mount

Compliance Parameters:

RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)

All identified substitute parts maintain these electrical and mechanical specifications. Variations in maximum power dissipation (250–310 mW range) and collector cutoff current (50–100 nA range) remain within acceptable tolerance for general-purpose applications and do not preclude substitution.

Parameter Comparison

Parameter	MMBT3906-13 (Diodes Inc.)	MMBT3906Q-7-F (Diodes Inc.)	MMBT3906,215 (NXP)	MMBT3906-TP (Micro Commercial)	MMBT3906VL (Nexperia USA)
Transistor Type	PNP	PNP	PNP	PNP	PNP
Current - Collector (Ic) Max	200 mA	200 mA	200 mA	200 mA	200 mA
Voltage - Collector Emitter Breakdown (Max)	40 V	40 V	40 V	40 V	40 V
Vce Saturation (Max) @ Ib, Ic	400 mV @ 5 mA, 50 mA	400 mV @ 5 mA, 50 mA	400 mV @ 5 mA, 50 mA	400 mV @ 5 mA, 50 mA	400 mV @ 5 mA, 50 mA
Current - Collector Cutoff (Max)	50 nA	50 nA	50 nA	100 nA	50 nA
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 10 mA, 1 V	100 @ 10 mA, 1 V	100 @ 10 mA, 1 V	100 @ 10 mA, 1 V	100 @ 10 mA, 1 V
Power - Max	310 mW	310 mW	250 mW	300 mW	Not specified
Frequency - Transition	250 MHz	250 MHz	250 MHz	250 MHz	250 MHz
Operating Temperature Range	-55 to 150 °C	-55 to 150 °C	150 °C (max)	-55 to 150 °C	150 °C (max)
Package / Case	SOT-23-3	SOT-23-3	SOT-23-3	SOT-23-3	SOT-23-3
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MMBT3906Q-7-F (Diodes Incorporated) is a parametric equivalent with identical electrical specifications and active product status. This part maintains AEC-Q101 automotive qualification and is supplied in Tape & Reel packaging. Selection of this part ensures continuity with the original manufacturer's design lineage.

MMBT3906,215 (NXP Semiconductors) is an active alternative from a major semiconductor manufacturer. This part meets all critical electrical parameters and carries AEC-Q101 automotive qualification. The maximum operating temperature specification is provided as 150°C (maximum junction temperature) rather than a range. Maximum power dissipation is specified at 250 mW, which is within acceptable tolerance for general-purpose applications.

MMBT3906-TP (Micro Commercial Co) is an active substitute with full electrical equivalence. This part is available in high inventory volume and is supplied in Tape & Reel packaging. The collector cutoff current specification is 100 nA, which exceeds the original 50 nA specification but remains acceptable for non-critical leakage-sensitive applications.

MMBT3906VL (Nexperia USA Inc.) is an active alternative with electrical equivalence. This part carries AEC-Q100 automotive qualification and is supplied in Tape & Reel packaging. Maximum power dissipation is not specified in the provided data. The maximum operating temperature is specified as 150°C.

All substitute parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can MMBT3906-13 be directly replaced with any of these substitute parts?

A: Yes. All identified substitute parts maintain electrical equivalence across collector current, breakdown voltage, saturation characteristics, current gain, and transition frequency. All are packaged in SOT-23-3 surface-mount configuration with identical pinout. Direct substitution is supported at the circuit level.

Q: What is the significance of the product status change from Obsolete to Active?

A: The MMBT3906-13 is classified as obsolete, meaning it is no longer manufactured or supported by Diodes Incorporated. The substitute parts listed are all active products with ongoing manufacturing and supply chain availability. Selection of an active substitute ensures long-term component availability for production and field repair.

Q: Are there differences in automotive qualification between the substitute parts?

A: MMBT3906Q-7-F, MMBT3906,215, and MMBT3906VL all carry automotive-grade qualifications (AEC-Q101 or AEC-Q100). MMBT3906-TP does not specify automotive qualification in the provided data. For automotive applications, selection of a qualified part is required.

Q: What is the difference between the power dissipation ratings?

A: The original MMBT3906-13 is rated at 310 mW maximum power dissipation. Substitute parts range from 250 mW to 310 mW. These variations reflect different thermal design margins but do not affect substitution for general-purpose switching and amplification circuits operating within standard power budgets. Applications requiring maximum power dissipation near 310 mW should verify thermal performance with the selected substitute.

Q: Does the collector cutoff current variation affect substitution?

A: The original part specifies 50 nA maximum collector cutoff current. MMBT3906-TP specifies 100 nA. This variation is acceptable for general-purpose applications. Applications with strict leakage current requirements should select parts specifying 50 nA (MMBT3906Q-7-F, MMBT3906,215, or MMBT3906VL).

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts are packaged in SOT-23-3 (TO-236-3, SC-59) surface-mount configuration. Tape & Reel packaging is available for MMBT3906Q-7-F, MMBT3906-TP, and MMBT3906VL. Bulk or cut-tape packaging availability should be confirmed with the supplier for specific procurement requirements.

Q: What is the operating temperature range for each substitute?

A: MMBT3906Q-7-F and MMBT3906-TP specify -55°C to 150°C operating range, matching the original part. MMBT3906,215 and MMBT3906VL specify 150°C as maximum junction temperature without a minimum specification in the provided data. For applications requiring full -55°C to 150°C range, MMBT3906Q-7-F or MMBT3906-TP are preferred.

Q: Is RoHS3 compliance maintained across all substitutes?

A: MMBT3906Q-7-F, MMBT3906-TP, and MMBT3906VL are explicitly RoHS3 compliant. MMBT3906,215 does not specify RoHS status in the provided data. For applications requiring RoHS3 compliance, confirm compliance status with the supplier or select from the explicitly compliant alternatives.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message