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Nexperia USA Inc. MMBT3906VL
- Part No.:
- MMBT3906VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBT3906VL.pdf
- Description:
- TRANS PNP 40V 0.2A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,140
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Product details
Overview
MMBT3906VL from Nexperia is a PNP bipolar junction transistor (BJT) designed for general-purpose switching and linear amplification in compact SOT23 packages. It delivers -40 V VCEO, -200 mA IC, AEC-Q101 qualification, 30–300 hFE at IC = -10 mA to -100 mA, and -400 mV VCE(sat) at IC = -50 mA / IB = -5 mA - deployed in automotive body control modules for relay driver stages.
For engineers reviewing the MMBT3906VL datasheet, MMBT3906VL pinout, MMBT3906VL application, or MMBT3906VL equivalent, key selection criteria include verified PNP switching capability under -40 V stress, thermal resistance of 500 K/W on FR4 PCB, AEC-Q101 compliance for automotive use, and SOT23 footprint compatibility with high-density layouts.
Technical Context
This discrete PNP BJT operates in active, saturation, and cutoff regions with defined DC gain (hFE) ranging from 60 at IC = -0.1 mA to 30 at IC = -100 mA, supporting both analog amplification and digital on/off control. Its low VBE(sat) (-950 mV max at IC = -50 mA / IB = -5 mA) enables efficient base drive in low-voltage logic interfaces.
Switching performance is characterized by td = 35 ns, tr = 35 ns, ts = 225 ns, and tf = 75 ns under standardized test conditions (ICon = -10 mA, IBoff = 1 mA), making it suitable for medium-speed digital signal routing and load switching up to ~1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -40 V - Maximum collector-emitter voltage before breakdown; defines safe operating range in automotive 12 V/24 V systems with load dump margin. |
| IC | -200 mA - Continuous collector current rating; supports driving small relays, LEDs, or MOSFET gates without external heat sinking. |
| hFE | 30–300 - DC current gain across IC = -10 mA to -100 mA; enables predictable base resistor sizing for reliable saturation in switching designs. |
| VCE(sat) | -400 mV max at IC = -50 mA / IB = -5 mA - Low saturation voltage minimizes power loss and self-heating during on-state operation. |
| Rth(j-a) | 500 K/W - Junction-to-ambient thermal resistance on standard FR4 PCB; informs derating curves for ambient temperatures up to +105 °C. |
| fT | 250 MHz - Transition frequency at VCE = -20 V, IC = -10 mA; confirms usable bandwidth for RF-coupled bias networks or fast edge handling. |
| AEC-Q101 | Qualified - Meets stress-test requirements for discrete semiconductors in automotive applications; validated for temperature cycling, HTRB, and ESD. |
Pinout & Package
SOT23 plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body; optimized for reflow soldering per IPC-7095 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal for forward-biased PNP operation; requires negative base current relative to emitter to turn on. |
| 2 | Emitter (E) | Current source terminal in PNP configuration; typically connected to higher potential (e.g., VCC) in common-emitter switches. |
| 3 | Collector (C) | Current sink terminal; connects to load (e.g., relay coil or LED anode) with return path to ground or lower potential. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood environments including temperature cycling (-40 °C to +150 °C) and humidity exposure. |
| Low VCE(sat) | -400 mV max ensures <15 mW conduction loss at 50 mA, reducing thermal load in space-constrained modules. |
| High hFE consistency | Typical hFE ≥ 100 at IC = -10 mA enables stable switching with ±10% base resistor tolerance. |
| Fast switching | 225 ns storage time (ts) allows clean turn-off in PWM-driven loads up to 10 kHz without tail current issues. |
| Robust thermal design | 150 °C maximum junction temperature and 500 K/W Rth(j-a) support operation in sealed enclosures without forced airflow. |
Applications
| Automotive Body Control Unit (BCU) | Industrial Sensor Interface |
|---|---|
Use Scenario: Driving 12 V relay coils in door lock/unlock circuits with microcontroller GPIO output. IC Role / Device Role / Timing Role: Discrete PNP switch providing level-shifted, current-amplified drive to isolate MCU from inductive load transients. Use Value: -40 V VCEO withstands ISO 7637-2 pulse 5a (load dump), while AEC-Q101 qualification ensures field reliability over 15-year vehicle life. |
Use Scenario: Amplifying low-level analog signals from NTC thermistors in HVAC control panels. IC Role / Device Role / Timing Role: Linear-mode PNP amplifier configured as emitter follower for impedance matching and noise rejection. Use Value: Stable hFE > 60 at IC = -0.1 mA enables precise gain setting with minimal drift across -40 °C to +85 °C ambient. |
| Consumer Appliance Power Sequencing | Medical Diagnostic Equipment Biasing |
Use Scenario: Enabling sequential power-up of subsystems (e.g., display backlight before main processor) using timed MCU outputs. IC Role / Device Role / Timing Role: Digital switch controlling enable lines of LDOs or DC-DC converters via open-collector logic interface. Use Value: -200 mA IC rating supports simultaneous activation of multiple downstream regulators without parallel devices. |
Use Scenario: Providing stable bias current to photodiode transimpedance amplifiers in portable blood oximeters. IC Role / Device Role / Timing Role: Constant-current source configured with emitter degeneration resistor for low-noise, temperature-stable operation. Use Value: ICBO ≤ -50 nA ensures leakage-induced offset error remains below 1 µV in high-gain front-end stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS3906XV6T1G | Same SOT23-3 package, identical VCEO (-40 V) and IC (-200 mA), but hFE min = 100 (vs. 60 for MMBT3906VL) and no AEC-Q101 certification. | Not qualified for automotive use; suitable for industrial or consumer applications where qualification is not mandated. | Select when higher guaranteed hFE is required and automotive qualification is unnecessary. |
| Diodes Incorporated DXT3906-7-F | Same electrical specs and SOT23 package, but rated to 200 mW Ptot (vs. 250 mW) and lacks AEC-Q101 validation. | Limited thermal margin in sustained 100 mA operation; not approved for automotive safety-critical subsystems. | Prefer for cost-sensitive non-automotive designs where full 250 mW dissipation is not needed. |
Compared with NSS3906XV6T1G and DXT3906-7-F, the MMBT3906VL uniquely combines AEC-Q101 qualification, 250 mW power rating, and broad hFE range - making it the only choice for automotive-grade PNP switching where qualification traceability and thermal headroom are mandatory.
Availability
MMBT3906VL is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor interfaces, and consumer appliance power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MMBT3906VL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with core expertise in automotive-qualified components and advanced packaging.
The MMBT3906VL belongs to Nexperia's AEC-Q101-qualified general-purpose transistor product line, engineered specifically for robust switching and amplification in harsh automotive and industrial environments.
FAQ
Is MMBT3906VL pin-compatible with MMBT3904?
No - MMBT3906VL is a PNP transistor with pinout Base (1), Emitter (2), Collector (3); MMBT3904 is its NPN complement with identical SOT23 mechanical outline but reversed polarity and different internal doping. Swapping them without circuit redesign causes functional failure due to inverted current flow direction and bias requirements.
What is the maximum allowable base current for continuous operation?
The absolute maximum peak base current (IBM) is -100 mA per datasheet Table 5, but continuous operation should be limited to ≤ -10 mA to avoid excessive junction heating. At IC = -100 mA and hFE = 30, recommended IB = -3.3 mA ensures reliable saturation without exceeding thermal limits on standard FR4 PCB.
Does MMBT3906VL support operation at -55 °C?
Yes - the device is fully specified from -65 °C to +150 °C for storage and operation. Electrical characteristics including hFE, VCE(sat), and leakage currents are tested and guaranteed across this full range, enabling deployment in cold-climate automotive and outdoor industrial equipment.
Can MMBT3906VL replace BC807-40 in existing designs?
Only with verification - BC807-40 has higher hFE (min 250 vs. 60 for MMBT3906VL) and same VCEO/IC. Substitution may cause insufficient drive in high-gain configurations. If base drive capability permits, MMBT3906VL offers AEC-Q101 qualification where BC807-40 does not, but circuit-level validation of switching speed and saturation margin is required.
MMBT3906VL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 200 mA
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 1V
- Power - Max:
- -
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
MMBT3906VL FAQ
1.How can I place an order for MMBT3906VL through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBT3906VL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MMBT3906VL reliable?
The price and inventory of MMBT3906VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBT3906VL is usually 5 days.
3.What payment methods are accepted for MMBT3906VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBT3906VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBT3906VL?
MMBT3906VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBT3906VL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MMBT3906VL?
For technical support, including MMBT3906VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBT3906VL requirements.
6.How does Aetrix verify that MMBT3906VL is sourced from the original manufacturer or authorized distributors?
All MMBT3906VL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MMBT3906VL meets industry standards.
7.What is the process for return or replacement of MMBT3906VL?
All MMBT3906VL units undergo pre-shipment inspection (PSI). If there is an issue with MMBT3906VL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MMBT3906VL part is unused and in its original packaging.
Return procedure for MMBT3906VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBT3906VL Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
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