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Diodes Incorporated MMBD4448HSDW-7
- Part No.:
- MMBD4448HSDW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMBD4448HSDW-7.pdf
- Description:
- DIODE ARRAY GP 80V 250MA SOT-363
- Quantity:
- Payment:
- Shipping:
Inventory:91
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Product details
Overview
MMBD4448HSDW-7 from Diodes Incorporated is a dual-channel surface-mount fast switching 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 in compact power management and interface circuits.
For engineers reviewing the MMBD4448HSDW-7 datasheet, MMBD4448HSDW-7 pinout, MMBD4448HSDW-7 application, or MMBD4448HSDW-7 equivalent, key selection criteria include reverse recovery speed, low-leakage performance at elevated temperature, dual-diode integration in space-constrained layouts, and AEC-Q101 qualification status for automotive-grade reliability assurance.
Technical Context
This dual common-cathode diode array integrates two independent high-speed silicon switching diodes in a single SOT363 package. Its 4ns trr and 3.5pF CT support clean digital signal edge integrity in clamping, level-shifting, and protection circuits operating up to ~100MHz.
The device operates across –55°C to +150°C with thermal resistance of 625°C/W (junction-to-ambient) on standard FR-4 PCB layout. Its 80V VRRM and 100V VRM ratings enable use in 48V industrial bus interfaces and 24V automotive subsystems where transient suppression and fast turn-off are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 80 V - Maximum continuous reverse blocking voltage per diode, suitable for 48V system-level transient clamping. |
| trr | 4.0 ns - Measured at VR = 6V, IF = 5mA; enables reliable operation in >50MHz digital signal paths. |
| VF @ 5mA | 0.72 V max - Low conduction loss improves efficiency in low-power logic-level translation and bias networks. |
| IR @ 70V | 100 nA max - Ensures minimal leakage-induced offset in precision analog sampling and sensor front-ends. |
| CT @ 6V | 3.5 pF max - Limits capacitive loading on high-speed data lines such as USB 2.0 or LVDS receivers. |
| IFM | 500 mA - Continuous forward current rating supports moderate-current rail steering and OR-ing functions. |
| TJ Range | –55°C to +150°C - Validated operation across extended automotive and industrial ambient conditions. |
Pinout & Package
Package: SOT363 - 6-pin, dual-row, surface-mount plastic package with matte tin-plated alloy 42 leadframe; moisture sensitivity level 1 per J-STD-020; weight ≈ 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first diode; connects to signal source requiring clamping or steering. |
| A2 | Anode 2 | Input terminal for second diode; enables independent control of dual signal paths. |
| C1 | Cathode (shared) | Common cathode node; ties both diodes to reference rail (e.g., VCC or ground for clamping). |
| C2 | Cathode (shared) | Second connection to same internal cathode node; provides mechanical redundancy and lower inductance path. |
| A3 | No Connect | Internally unconnected; must remain floating per datasheet to avoid parasitic coupling. |
| A4 | No Connect | Internally unconnected; no external connection permitted to maintain specified electrical behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching speed | 4ns reverse recovery time enables use in >50MHz clock distribution and data line protection. |
| Low forward voltage | 0.72V max at 5mA reduces power loss and self-heating in battery-powered sensor nodes. |
| Low reverse leakage | 100nA max at 70V ensures stable DC bias points in high-impedance analog front-ends. |
| Dual common-cathode configuration | Shared cathode simplifies PCB routing and reduces component count in dual-rail clamp designs. |
| AEC-Q101 qualified variant available | MMBD4448HADWQ-7-F meets automotive stress testing requirements for under-hood applications. |
Applications
| USB 2.0 ESD Protection | Automotive CAN Bus Clamping |
|---|---|
Use Scenario: Bidirectional signal line protection against ±8kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Dual-diode array configured as low-capacitance steering diode pair to shunt transients to VBUS and GND rails. Use Value: 3.5pF capacitance avoids signal integrity degradation on 480Mbps differential data lines while maintaining <100nA leakage at 3.3V bias. |
Use Scenario: Transient voltage suppression on CAN_H/CAN_L lines in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Fast-recovery dual diode clamps each line to battery and ground rails using common-cathode topology. Use Value: 4ns trr ensures clamping action completes before pulse edge overshoot exceeds controller tolerance; 80V VRRM covers 24V system + 56V transients. |
| Industrial PLC Digital Input Conditioning | LVDS Receiver Bias Network |
Use Scenario: Level translation and overvoltage protection for 24V dry-contact inputs interfacing with 3.3V FPGA I/O banks. IC Role / Device Role / Timing Role: Anode-connected to field-side 24V, cathode tied to 3.3V rail; conducts only during fault events above 3.3V + VF. Use Value: 0.72V VF minimizes threshold uncertainty; 500mA IFM withstands sustained 24V short-circuit currents without thermal runaway. |
Use Scenario: DC biasing and AC coupling termination for differential pairs in 650Mbps LVDS video links. IC Role / Device Role / Timing Role: Dual diodes provide matched forward drop for common-mode voltage setting while isolating DC paths between driver and receiver. Use Value: Matched VF and CT ensure <1ps skew between channels; low IR prevents drift in 100Ω termination current sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual fast-switching diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54CWS-7-F | Higher VF (0.8V min @ 10mA), higher CT (10pF), same SOT323 package but single-row; not AEC-Q101 qualified. | Limited to commercial-grade consumer electronics due to lack of automotive qualification and higher capacitance. | Select when cost sensitivity outweighs speed/capacitance requirements and automotive compliance is unnecessary. |
| NSR0230P2T5G | Single diode in SOD-923; 0.35V VF @ 100mA, 0.5pF CT, but no dual configuration or common-cathode topology. | Requires two devices and additional routing for dual-path applications; unsuitable for shared-rail clamping. | Prefer only for ultra-low-capacitance single-line protection where board area permits discrete placement. |
Compared with BAT54CWS-7-F and NSR0230P2T5G, MMBD4448HSDW-7 uniquely combines dual common-cathode topology, 4ns trr, sub-4pF capacitance, and automotive-grade variants-making it optimal for space-constrained, high-speed, and mission-critical dual-signal protection.
Availability
MMBD4448HSDW-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive CAN bus clamping, and industrial PLC digital input conditioning requiring stable component supply and long-term production continuity.
Supply support for MMBD4448HSDW-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, manufacturing, and sales operations across Asia, Europe, and North America.
The MMBD4448H series belongs to Diodes' high-speed switching diode product line, engineered specifically for signal integrity preservation in compact, high-frequency digital and automotive interface applications.
FAQ
Is MMBD4448HSDW-7 AEC-Q101 qualified?
No - MMBD4448HSDW-7 is not AEC-Q101 qualified. The AEC-Q101 qualified variant is MMBD4448HADWQ-7-F, which shares identical electrical specs but undergoes automotive-specific stress testing and is produced in IATF16949-certified facilities with PPAP documentation support.
What is the maximum operating temperature for continuous use?
The MMBD4448HSDW-7 is rated for continuous operation from –55°C to +150°C junction temperature. At ambient temperatures above 75°C, derating applies: power dissipation must be reduced linearly from 200mW at 25°C to zero at 150°C, per Figure 1 in DS30153.
Can pins A3 and A4 be used as thermal pads or grounded?
No - pins A3 and A4 are internally unconnected (NC) and must remain electrically floating. Grounding or connecting them introduces parasitic coupling paths that degrade reverse recovery performance and may violate JEDEC SOT363 mechanical specifications.
How does the common-cathode configuration affect PCB layout?
The shared cathode (C1/C2) allows direct tie to a single reference plane (e.g., VCC or GND), reducing trace inductance and eliminating mismatched return paths. This configuration simplifies routing in dual-signal protection schemes and improves EMI performance versus discrete diode solutions.
MMBD4448HSDW-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 Series Connection
- 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
MMBD4448HSDW-7 FAQ
1.How can I place an order for MMBD4448HSDW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBD4448HSDW-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 MMBD4448HSDW-7 reliable?
The price and inventory of MMBD4448HSDW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBD4448HSDW-7 is usually 5 days.
3.What payment methods are accepted for MMBD4448HSDW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBD4448HSDW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBD4448HSDW-7?
MMBD4448HSDW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBD4448HSDW-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 MMBD4448HSDW-7?
For technical support, including MMBD4448HSDW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBD4448HSDW-7 requirements.
6.How does Aetrix verify that MMBD4448HSDW-7 is sourced from the original manufacturer or authorized distributors?
All MMBD4448HSDW-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 MMBD4448HSDW-7 meets industry standards.
7.What is the process for return or replacement of MMBD4448HSDW-7?
All MMBD4448HSDW-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBD4448HSDW-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 MMBD4448HSDW-7 part is unused and in its original packaging.
Return procedure for MMBD4448HSDW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBD4448HSDW-7 Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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