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Diodes Incorporated MMDT4401Q-7-F
- Part No.:
- MMDT4401Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMDT4401Q-7-F.pdf
- Description:
- TRANS 2NPN 40V 600MA SOT-363
- Quantity:
- Payment:
- Shipping:
Inventory:1,450
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Product details
Overview
MMDT4401Q-7-F from Diodes Incorporated is a dual NPN small-signal bipolar junction transistor (BJT) in SOT363 package, rated for 40V VCEO, 600mA IC, and qualified to AEC-Q101 for automotive use. It delivers hFE = 40–300 at IC = 10mA–500mA and VCE = 1.0–2.0V, with VCE(SAT) ≤ 0.75V at IC = 500mA/IB = 50mA, enabling medium-power switching in engine control modules and body electronics.
For engineers reviewing the MMDT4401Q-7-F datasheet, MMDT4401Q-7-F pinout, MMDT4401Q-7-F application, or MMDT4401Q-7-F equivalent, key selection criteria include AEC-Q101 qualification, dual-NPN topology in ultra-small SOT363, guaranteed hFE minima across five current points, ESD HBM rating of 4kV, and thermal resistance of 625°C/W on standard FR-4 layout.
Technical Context
This dual NPN transistor uses epitaxial planar die construction to ensure stable gain and low leakage across –55°C to +150°C operation. Its BVCEO = 40V and IC = 600mA support robust switching in 12V/24V automotive subsystems, while fT = 250MHz enables signal amplification up to UHF band.
The device features matched pair characteristics within a single SOT363 package, with Cobo = 6.5pF and Cibo = 30pF at specified bias conditions, supporting high-speed switching with tF = 30ns and tS = 225ns under pulsed 30V/150mA test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40V - supports reliable operation in 24V automotive power rails with margin |
| IC | 600mA - enables driving medium-current loads like relays and LED arrays |
| hFE | 40–300 - provides predictable DC gain across 100µA–500mA collector current range |
| VCE(SAT) | ≤0.75V @ IC=500mA/IB=50mA - minimizes conduction loss in saturated-switch mode |
| fT | 250MHz - suitable for RF pre-amplification and fast digital signal conditioning |
| RθJA | 625°C/W - defines thermal derating on minimal 1oz copper FR-4 PCB per JEDEC standards |
| ESD HBM | 4,000V - ensures handling robustness during automated assembly and field service |
Pinout & Package
Package: SOT363 - ultra-small surface-mount plastic package (2.15 × 2.10 × 1.00 mm), UL 94V-0 rated, lead-free, halogen-free, and AEC-Q101 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of Q1 | Low-impedance current sink node for first transistor; tied to ground reference in common-emitter switch |
| 2 | Base of Q1 | Control input requiring ~0.85V VBE(SAT) to drive 500mA IC; sensitive to ESD |
| 3 | Collector of Q1 | High-side output node; supports up to 40V VCEO and 600mA continuous current |
| 4 | Collector of Q2 | Second high-side output; electrically isolated from Q1 but thermally coupled in shared die |
| 5 | Base of Q2 | Independent control input; matched gain and saturation behavior to Q1 per datasheet test conditions |
| 6 | Emitter of Q2 | Second low-side return path; enables dual-channel discrete logic or load switching in compact layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JESD22 |
| Dual NPN topology in one package | Reduces PCB area by ~40% vs. two discrete SOT23 transistors; improves thermal coupling for matched biasing |
| VCE(SAT) ≤ 0.40V @ IC=150mA | Enables <120mW conduction loss per transistor at mid-range switching currents |
| Moisture Sensitivity Level 1 | Eliminates bake requirement prior to reflow; compatible with standard J-STD-020 assembly processes |
| Matte tin terminal finish | Ensures solderability per MIL-STD-202 Method 208; prevents intermetallic growth during thermal cycling |
Applications
| Engine Control Unit (ECU) Signal Conditioning | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Amplifying crankshaft position sensor signals before ADC sampling in real-time engine timing loops. IC Role / Device Role / Timing Role: Dual-NPN configured as cascode amplifier and level shifter to interface 5V logic with 12V sensor outputs. Use Value: 250MHz fT and 40–300 hFE ensure accurate pulse edge fidelity at 10kHz–20kHz RPM ranges without added propagation delay. | Use Scenario: Driving door lock actuators and interior lighting via PWM-controlled switching in centralized BCM. IC Role / Device Role / Timing Role: Dual NPN used as independent low-side switches with base resistors integrated into PCB layout. Use Value: 600mA IC rating and ≤0.75V VCE(SAT) limit power dissipation to <450mW per channel at full load, avoiding thermal shutdown. |
| LED Headlamp Dimming Circuit | Transmission Control Solenoid Driver |
Use Scenario: Modulating high-brightness LED strings in adaptive front-lighting systems using analog current control. IC Role / Device Role / Timing Role: First NPN as current mirror reference, second as active current sink for precise LED current regulation. Use Value: Matched hFE and thermal tracking between Q1/Q2 enable <±3% current matching across –40°C to +125°C ambient. | Use Scenario: Switching 12V solenoid valves in automatic transmission hydraulic control units. IC Role / Device Role / Timing Role: Dual NPN configured in Darlington pair to boost drive capability beyond single-transistor limits. Use Value: BVCEO = 40V and tS = 225ns allow safe commutation of inductive loads with flyback suppression and minimal turn-off delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-NPN switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMT3005LPS-7 | Single NPN, 30V VCEO, 5A IC, SOT23 package | Higher current, lower voltage rating; no dual topology | Select when only one high-current switch is needed and board space allows larger footprint |
| BC847BDW1T1G | Dual NPN, 45V VCEO, 100mA IC, SOT363, not AEC-Q101 qualified | Lower IC rating; lacks automotive qualification and 600mA capability | Acceptable for non-automotive consumer applications where cost is prioritized over reliability and current headroom |
Compared with DMT3005LPS-7 and BC847BDW1T1G, MMDT4401Q-7-F uniquely combines AEC-Q101 qualification, dual-NPN integration, 600mA per channel, and 40V breakdown in SOT363-making it the only option meeting functional, thermal, and compliance requirements for safety-critical automotive switching nodes.
Availability
MMDT4401Q-7-F is available at Aetrix Electronics and suitable for engine control units, body control modules, and LED headlamp drivers requiring stable component supply with automotive-grade traceability and lifecycle assurance.
Supply support for MMDT4401Q-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 computing markets.
The MMDT4401Q belongs to Diodes' AEC-Q101-qualified small-signal transistor product line, engineered specifically for automotive signal conditioning, load switching, and sensor interfacing where thermal stability and long-term parametric consistency are critical.
FAQ
What is the maximum operating temperature for MMDT4401Q-7-F?
The MMDT4401Q-7-F is rated for junction and storage temperatures from –55°C to +150°C. Its AEC-Q101 qualification includes extended high-temperature operating life testing at 150°C, confirming stable hFE, VCE(SAT), and leakage performance under sustained thermal stress typical of under-hood environments.
Does MMDT4401Q-7-F support hot-swap or in-circuit programming?
No-MMDT4401Q-7-F is a passive switching/amplification device with no built-in protection circuitry or programmable logic. It requires external current-limiting resistors and flyback diodes when driving inductive loads, and does not support hot-swap sequencing or firmware-based configuration.
How does the dual-NPN configuration improve PCB layout efficiency?
The matched dual-NPN structure in SOT363 reduces component count by eliminating one package footprint versus discrete SOT23 devices, cuts trace length by enabling shared thermal pads, and improves gain matching due to monolithic die construction-resulting in up to 35% smaller layout area and tighter thermal coupling for bias-stable designs.
Is MMDT4401Q-7-F compatible with lead-free reflow profiles?
Yes-MMDT4401Q-7-F uses matte tin terminal plating and is rated for Moisture Sensitivity Level 1 per J-STD-020, meaning it can be processed using standard lead-free reflow profiles (peak 260°C) without baking or special handling, and meets IPC-J-STD-020 requirements for solderability and intermetallic formation control.
MMDT4401Q-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):
- 600mA
- Voltage - Collector Emitter Breakdown (Max):
- 40V
- Vce Saturation (Max) @ Ib, Ic:
- 750mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 150mA, 1V
- Power - Max:
- 200mW
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
MMDT4401Q-7-F FAQ
1.How can I place an order for MMDT4401Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMDT4401Q-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 MMDT4401Q-7-F reliable?
The price and inventory of MMDT4401Q-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 MMDT4401Q-7-F is usually 5 days.
3.What payment methods are accepted for MMDT4401Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMDT4401Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMDT4401Q-7-F?
MMDT4401Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMDT4401Q-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 MMDT4401Q-7-F?
For technical support, including MMDT4401Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMDT4401Q-7-F requirements.
6.How does Aetrix verify that MMDT4401Q-7-F is sourced from the original manufacturer or authorized distributors?
All MMDT4401Q-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 MMDT4401Q-7-F meets industry standards.
7.What is the process for return or replacement of MMDT4401Q-7-F?
All MMDT4401Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMDT4401Q-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 MMDT4401Q-7-F part is unused and in its original packaging.
Return procedure for MMDT4401Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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