My Inquiry
My Account
Diodes Incorporated MMDT3904Q-7-F
- Part No.:
- MMDT3904Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMDT3904Q-7-F.pdf
- Description:
- TRANS 2NPN 40V 200MA SOT-363
- Quantity:
- Payment:
- Shipping:
Inventory:1,023
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMDT3904Q-7-F from Diodes Incorporated is a dual NPN small-signal transistor in SOT363 package, rated for 40 V VCEO, 200 mA IC, and 200 mW power dissipation, with DC current gain (hFE) ranging from 40 to 300 across 100 µA–100 mA collector current, used in automotive-grade medium-power switching and amplification circuits.
For engineers reviewing the MMDT3904Q-7-F datasheet, MMDT3904Q-7-F pinout, MMDT3904Q-7-F application, or MMDT3904Q-7-F equivalent, key selection criteria include AEC-Q101 qualification, ultra-small SOT363 footprint, dual NPN topology with matched characteristics, and guaranteed hFE minima at multiple bias points.
Technical Context
This dual NPN transistor integrates two electrically isolated, matched transistors on a single die using epitaxial planar construction, enabling compact dual-channel switching or differential pair operation without cross-coupling. Its 625 °C/W RθJA reflects thermal performance on minimum FR-4 pad layout under still-air conditions.
The device supports fast switching with tD/tR/tF ≤ 35 ns and tS ≤ 200 ns at VCC = 3.0 V, while maintaining low VCE(SAT) (≤ 0.30 V @ IC = 50 mA, IB = 5.0 mA) and high fT (≥ 300 MHz), making it suitable for signal routing and load control in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration |
| IC | 200 mA - Continuous collector current rating defining maximum linear or switching load capacity |
| PD | 200 mW - Total device power dissipation limit at TA = 25°C on standard PCB layout |
| hFE (IC = 10 mA) | 60–300 - Confirmed DC current gain range enabling predictable base drive sizing for saturation |
| fT | ≥ 300 MHz - Minimum transition frequency ensuring usable gain up to UHF band in amplifier designs |
| ESD HBM | 4,000 V - Robustness level meeting JEDEC Class 3A, reducing handling sensitivity in production |
| RθJA | 625 °C/W - Thermal resistance indicating junction-to-ambient rise per watt, critical for thermal margin calculation |
Pinout & Package
Package: SOT363 - Ultra-small surface-mount plastic package (2.15 mm × 2.10 mm × 1.00 mm), lead-free, halogen-free, AEC-Q101 qualified, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of Transistor 1 | Low-impedance current sink node for first NPN; tied to ground or emitter resistor in common-emitter switch |
| 2 | Base of Transistor 1 | Control input requiring ~0.7 V forward bias and sufficient IB to saturate IC ≤ 200 mA |
| 3 | Collector of Transistor 1 | High-side output node; connects to load or pull-up; withstands up to 40 V when off |
| 4 | Collector of Transistor 2 | Independent high-side output for second channel; electrically isolated from Pin 3 |
| 5 | Base of Transistor 2 | Second independent control input; matches Pin 2 in threshold and gain characteristics |
| 6 | Emitter of Transistor 2 | Second independent emitter node; enables dual-channel discrete logic or mirrored biasing |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Dual NPN topology in single SOT363 | Reduces board area by ~40% vs. two discrete SOT23 devices while maintaining electrical isolation |
| Matched hFE and VBE(SAT) | Enables consistent channel behavior in differential pairs or redundant switching paths without trimming |
| 6.0 V VEBO rating | Supports reverse-biased base-emitter operation in level-shifting or clamp configurations |
| 4.0 pF Cobo @ 5 V | Minimizes Miller effect in high-speed switching, preserving edge integrity up to 10 MHz |
Applications
| Automotive LED Driver | USB Port Protection Switch |
|---|---|
Use Scenario: Driving dual-color status LEDs in vehicle infotainment panels with PWM dimming and fault detection. IC Role / Device Role / Timing Role: Dual NPN switch controlling anode-side current for red/green LEDs independently. Use Value: Single SOT363 replaces two discrete transistors, saving 1.2 mm² PCB area while maintaining AEC-Q101 reliability and <0.3 V saturation drop at 20 mA. | Use Scenario: Enabling/disabling VBUS power path in USB 2.0 host ports with overcurrent feedback. IC Role / Device Role / Timing Role: Low-side switch controlling power delivery to downstream peripherals with fast turn-off (<50 ns fall time). Use Value: Matched dual channels allow simultaneous enable/disable of redundant USB ports or split VBUS/ID lines with identical timing margins. |
| Engine Control Unit Signal Conditioning | Industrial Sensor Interface Buffer |
Use Scenario: Level-shifting and amplifying crankshaft position sensor signals before MCU ADC sampling. IC Role / Device Role / Timing Role: Common-emitter amplifier stage with fixed-gain bias network using matched hFE. Use Value: Guaranteed hFE minima (60 @ 10 mA) ensure stable gain across temperature (-55°C to +150°C), eliminating calibration drift. | Use Scenario: Isolating and buffering analog outputs from pressure or temperature sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Emitter-follower buffer providing low-output-impedance drive to multiplexer inputs. Use Value: Dual configuration allows buffering two sensor channels with matched VBE(SAT), minimizing offset error between channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual NPN transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMT3904W-7-F | Same SOT363 package, identical pinout, but hFE min = 100 @ IC = 10 mA (vs. 60 for MMDT3904Q-7-F); higher VCEO = 45 V | Better suited for higher-gain, lower-base-drive designs; not AEC-Q101 qualified | Select when gain consistency > automotive qualification; avoid in safety-critical modules |
| BC846BDW1T1G | SOT363, AEC-Q101 qualified, but hFE min = 200 @ IC = 10 mA; VCEO = 65 V; higher PD = 300 mW | Higher voltage and power headroom; tighter hFE distribution (200–450) | Prefer for 12 V/24 V systems needing >40 V margin or >200 mW dissipation |
Compared with DMTC3904W-7-F and BC846BDW1T1G, MMDT3904Q-7-F offers the lowest base drive requirement among AEC-Q101 dual NPNs at mid-current bias, with verified thermal performance on minimal copper, making it optimal for cost-sensitive, space-constrained automotive modules where 40 V rating suffices.
Availability
MMDT3904Q-7-F is available at Aetrix Electronics and suitable for automotive LED drivers, USB port protection switches, engine control unit signal conditioning, and industrial sensor interface buffers requiring stable component supply and AEC-Q101 compliance.
Supply support for MMDT3904Q-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and consumer markets.
The MMDT3904Q belongs to Diodes' AEC-Q101-qualified small-signal transistor product line, designed specifically for space-constrained, thermally demanding automotive subsystems requiring dual-channel functionality without performance compromise.
FAQ
What is the maximum operating temperature for MMDT3904Q-7-F?
The MMDT3904Q-7-F has an operating junction temperature range of –55°C to +150°C, validated per AEC-Q101 stress testing. Its thermal resistance (RθJA = 625 °C/W) means that at 200 mW dissipation, junction temperature rises 125°C above ambient-so maximum ambient must be limited to +25°C for full-rated operation on standard PCB layout.
Is MMDT3904Q-7-F pin-compatible with other dual NPN SOT363 transistors?
Yes-MMDT3904Q-7-F uses standard SOT363 pinout (E-B-C / C-B-E), matching industry conventions for dual NPN devices. It is mechanically and electrically compatible with BC846BDW1T1G and DMT3904W-7-F, though hFE, VCEO, and qualification status differ; no adapter or footprint change is required for substitution.
Does MMDT3904Q-7-F support pulsed operation beyond its DC ratings?
Yes-the datasheet specifies switching characteristics (tD, tR, tS, tF) under pulsed conditions (pulse width ≤ 300 µs, duty cycle ≤ 2%), allowing peak IC up to 200 mA and VCEO up to 40 V during short transients, provided average power remains within 200 mW and thermal limits are observed.
How does the "Green" material designation affect soldering process compatibility?
The "Green" molding compound (halogen- and antimony-free, UL 94V-0 rated) is fully compatible with standard lead-free reflow profiles (J-STD-020). Matte tin terminations meet MIL-STD-202 Method 208 for solderability, supporting peak temperatures up to 260°C with no special prebake or nitrogen requirements.
MMDT3904Q-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 NPN (Dual)
- Current - Collector (Ic) (Max):
- 200mA
- Voltage - Collector Emitter Breakdown (Max):
- 40V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 50nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 1V
- Power - Max:
- 200mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
MMDT3904Q-7-F FAQ
1.How can I place an order for MMDT3904Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMDT3904Q-7-F 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 MMDT3904Q-7-F reliable?
The price and inventory of MMDT3904Q-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMDT3904Q-7-F is usually 5 days.
3.What payment methods are accepted for MMDT3904Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMDT3904Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMDT3904Q-7-F?
MMDT3904Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMDT3904Q-7-F 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 MMDT3904Q-7-F?
For technical support, including MMDT3904Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMDT3904Q-7-F requirements.
6.How does Aetrix verify that MMDT3904Q-7-F is sourced from the original manufacturer or authorized distributors?
All MMDT3904Q-7-F 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 MMDT3904Q-7-F meets industry standards.
7.What is the process for return or replacement of MMDT3904Q-7-F?
All MMDT3904Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMDT3904Q-7-F, 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 MMDT3904Q-7-F part is unused and in its original packaging.
Return procedure for MMDT3904Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMDT3904Q-7-F Tags
-
MBT3946DW1T1G
onsemi
-
BC846BPDW1T1G
onsemi
-
MBT2222ADW1T1G
onsemi
-
BC847BDW1T1G
onsemi
-
DMMT5401-7-F
Diodes Incorporated
-
DMMT5551-7-F
Diodes Incorporated
-
DMMT3904W-7-F
Diodes Incorporated
-
DMMT3906W-7-F
Diodes Incorporated
-
FMB3904
onsemi
-
FMB2222A
onsemi
-
ULQ2003D1013TR
STMicroelectronics
-
ZXTD4591E6TA
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
