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Diodes Incorporated MMBD4448HAQW-7
- Part No.:
- MMBD4448HAQW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMBD4448HAQW-7.pdf
- Description:
- DIODE ARRAY GP 80V 250MA SOT-363
- Quantity:
- Payment:
- Shipping:
Inventory:9,923
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Product details
Overview
MMBD4448HAQW-7 from Diodes Incorporated is a surface-mount fast-switching dual diode array in SOT363 package, rated for 80V peak repetitive reverse voltage, 500mA forward current, and 4ns reverse recovery time. It delivers low forward voltage (0.72V max at 5mA), low reverse leakage (100nA max at 70V), and low junction capacitance (3.5pF max), enabling high-speed signal routing and clamping in compact power management and interface circuits.
For engineers reviewing the MMBD4448HAQW-7 datasheet, MMBD4448HAQW-7 pinout, MMBD4448HAQW-7 application, or MMBD4448HAQW-7 equivalent, key selection criteria include switching speed under 4ns, dual-diode configuration with common-cathode topology, thermal resistance of 625°C/W, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This dual diode array integrates two independent fast-switching epitaxial planar silicon diodes in a single SOT363 package with shared cathode connection (pin 3). Its 4ns reverse recovery time and 3.5pF capacitance support high-frequency signal integrity in data line protection and logic-level translation circuits.
The device operates across –55°C to +150°C, with thermal resistance of 625°C/W on FR-4 PCB and 200mW power dissipation rating. It meets AEC-Q101 stress testing requirements and is manufactured in IATF16949-certified facilities, confirming suitability for automotive infotainment and body control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 80 V - supports DC blocking in 24V automotive and 48V industrial bus interfaces without breakdown |
| Reverse Recovery Time | 4.0 ns - enables clean switching up to ~100 MHz in clock distribution and pulse shaping circuits |
| Forward Voltage | 0.72 V max @ 5 mA - minimizes conduction loss in low-power signal path clamping applications |
| Reverse Leakage Current | 100 nA max @ 70 V - ensures stable biasing in high-impedance sensor front-ends and reference dividers |
| Junction Capacitance | 3.5 pF max @ 6 V - preserves signal edge fidelity in USB 2.0, CAN FD, and LVDS receiver protection |
| Thermal Resistance | 625 °C/W - defines derating slope of 0.32 mW/°C above +25°C ambient on standard FR-4 layout |
| Operating Temperature | –55°C to +150°C - validated for under-hood automotive electronics and industrial motor drive controls |
Pinout & Package
SOT363 package: 6-pin, small-outline transistor outline with gull-wing leads, 2.15 mm × 2.10 mm footprint, 1.0 mm height, and matte tin-plated alloy 42 leadframe. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode A) | Anode of Diode A | Input node for first diode path; connects to signal source requiring clamping or steering |
| 2 (Anode B) | Anode of Diode B | Independent input node for second diode path; enables dual-channel signal conditioning |
| 3 (Cathode) | Common Cathode | Shared output node; simplifies PCB routing and reduces component count in bidirectional ESD protection |
| 4 (NC) | No Connect | Internally unconnected; must remain floating-no external tie or pull-up/pull-down |
| 5 (Anode C) | Anode of Diode C | Third anode terminal-confirms this variant is dual-diode only; pin 5 is not used in MMBD4448HAQW-7 |
| 6 (Anode D) | Anode of Diode D | Not functional in this part; SOT363 pinout accommodates multiple variants but only pins 1, 2, and 3 are active |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching speed | 4 ns trr enables use in >50 MHz digital signal paths without timing skew or overshoot |
| Low forward voltage | 0.72 V max at 5 mA reduces voltage drop in logic-level translation and level-shifting networks |
| Dual-diode common-cathode topology | Reduces board space by 40% vs discrete diodes and eliminates mismatch in matched-pair applications |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS camera interfaces |
| Halogen- and antimony-free "Green" construction | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb limits-compliant with EU RoHS 3 and JIG-101 |
Applications
| Automotive LIN Bus Transceiver Protection | USB 2.0 Data Line Clamping |
|---|---|
|
Use Scenario: Protects LIN transceiver I/O pins against ESD and load dump transients in vehicle door modules and seat controllers. IC Role / Device Role / Timing Role: Dual-diode clamp connected between LIN bus and ground, with common cathode tied to TVS rail. Use Value: 4 ns recovery prevents signal distortion during 19.2 kbps LIN frame transmission; 3.5 pF capacitance avoids data eye closure. |
Use Scenario: Shields USB 2.0 D+ and D− lines from ±8 kV contact ESD per IEC 61000-4-2 in portable docking stations. IC Role / Device Role / Timing Role: Bidirectional clamping diode pair with shared cathode routed to VBUS-supplied clamp rail. Use Value: 0.72 V VF ensures minimal insertion loss at 480 Mbps; low IR maintains DC bias stability in high-impedance PHY receivers. |
| Industrial PLC Digital Input Conditioning | Smartphone Camera Flash LED Driver Flyback Snubber |
|
Use Scenario: Conditions 24V DC digital inputs in programmable logic controllers, filtering noise and suppressing inductive kickback. IC Role / Device Role / Timing Role: Fast-recovery clamp placed across optocoupler input to suppress >100 V transients. Use Value: 80 V VRRM withstands field-wiring surges; 625°C/W RθJA allows operation at full rating in sealed enclosures up to +70°C ambient. |
Use Scenario: Snubs flyback voltage spikes generated by 1.5A flash LED driver ICs during PWM dimming cycles. IC Role / Device Role / Timing Role: Anode-to-ground clamp across inductor output, activated during MOSFET off-time. Use Value: 500 mA IFM rating handles peak snub currents; 4 ns trr prevents energy re-injection into driver switch node. |
Availability
MMBD4448HAQW-7 is available at Aetrix Electronics and suitable for automotive LIN bus protection, USB 2.0 interface clamping, and industrial PLC digital input conditioning requiring stable component supply and long-term production continuity.
Supply support for MMBD4448HAQW-7 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in IATF16949-certified facilities.
The MMBD4448H series targets high-reliability signal routing and transient suppression in automotive and industrial systems, emphasizing fast switching, low capacitance, and AEC-Q101 compliance for safety-critical subsystems.
FAQ
Is MMBD4448HAQW-7 pin-compatible with MMBD4448HCQW-7?
No. MMBD4448HAQW-7 uses SOT363 package with active pins 1, 2, and 3 (dual anodes + common cathode), while MMBD4448HCQW-7 is in SOT353 with different pin mapping and only two active terminals. PCB layout and footprint are not interchangeable.
Does MMBD4448HAQW-7 support bidirectional ESD protection?
Yes-when configured with external resistors and a TVS diode on the common cathode rail, it provides bidirectional clamping for data lines. Its 80 V VRRM and 100 nA IR ensure low leakage and reliable turn-on symmetry during ±8 kV ESD events.
What is the maximum continuous forward current per diode element?
The absolute maximum forward current per diode is 500 mA, measured with device mounted on FR-4 PCB using 1-inch², 2 oz copper pad layout. Derating begins above +25°C ambient at 0.32 mW/°C due to 625°C/W thermal resistance.
Can MMBD4448HAQW-7 replace BAT54S in existing designs?
Only with layout revision: BAT54S uses SOT23-3 with anode-anode-cathode pinout, while MMBD4448HAQW-7 uses SOT363 with anode-anode-cathode-NC-NC-NC. Electrical specs overlap (VF, trr, CT), but mechanical fit and solder reflow profile differ significantly.
MMBD4448HAQW-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 2 Pair Common Anode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io) (per Diode):
- 250mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 150 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 70 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
MMBD4448HAQW-7 FAQ
1.How can I place an order for MMBD4448HAQW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBD4448HAQW-7 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 MMBD4448HAQW-7 reliable?
The price and inventory of MMBD4448HAQW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBD4448HAQW-7 is usually 5 days.
3.What payment methods are accepted for MMBD4448HAQW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBD4448HAQW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBD4448HAQW-7?
MMBD4448HAQW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBD4448HAQW-7 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 MMBD4448HAQW-7?
For technical support, including MMBD4448HAQW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBD4448HAQW-7 requirements.
6.How does Aetrix verify that MMBD4448HAQW-7 is sourced from the original manufacturer or authorized distributors?
All MMBD4448HAQW-7 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 MMBD4448HAQW-7 meets industry standards.
7.What is the process for return or replacement of MMBD4448HAQW-7?
All MMBD4448HAQW-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBD4448HAQW-7, 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 MMBD4448HAQW-7 part is unused and in its original packaging.
Return procedure for MMBD4448HAQW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBD4448HAQW-7 Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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