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Diodes Incorporated MMBD4448HTW-7
- Part No.:
- MMBD4448HTW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMBD4448HTW-7.pdf
- Description:
- DIODE ARRAY GP 80V 250MA SOT-363
- Quantity:
- Payment:
- Shipping:
Inventory:3,361
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Product details
Overview
MMBD4448HTW-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 in compact digital logic interfaces.
For engineers reviewing the MMBD4448HTW-7 datasheet, MMBD4448HTW-7 pinout, MMBD4448HTW-7 application, or MMBD4448HTW-7 equivalent, key selection criteria include switching speed under 4ns, dual-diode configuration in SOT363, automotive-grade AEC-Q101 qualification (via MMBD4448HADWQ variant), and compatibility with 1.0MHz–10MHz signal conditioning circuits requiring low-capacitance clamping.
Technical Context
This dual diode array integrates two independent, matched silicon switching diodes in a single SOT363 package, optimized for high-frequency signal steering, transient suppression, and logic-level clamping. Its 4ns trr and 3.5pF CT support clean edge integrity in 10–50MHz clock distribution paths and data line protection.
The device operates across –55°C to +150°C with thermal resistance of 625°C/W (junction-to-ambient) on FR-4 PCBs, and maintains stable reverse leakage below 100nA at 70V up to 125°C - critical for battery-powered sensor interface designs where standby power budget is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 80 V - supports DC blocking in 24V industrial I/O and 48V PoE auxiliary rails without breakdown. |
| Forward Voltage (VF) | 0.72 V max @ 5mA - minimizes voltage drop in low-power logic-level translation and bias networks. |
| Reverse Recovery Time (trr) | 4.0 ns max - enables reliable operation in >10MHz pulse shaping, RF detector coupling, and high-speed serial data line clamping. |
| Junction Capacitance (CT) | 3.5 pF max @ 6V - preserves signal rise/fall times in USB 2.0, CAN FD stub lines, and ADC input protection circuits. |
| Reverse Leakage (IR) | 100 nA max @ 70V - ensures <1µW standby dissipation in always-on sensor wake-up circuits at elevated temperature. |
| Package | SOT363 - 6-pin, dual-diode layout with common cathode or anode options; footprint compatible with automated placement and reflow. |
Pinout & Package
SOT363 is a 6-pin, surface-mount plastic package with 0.65mm pitch, 2.15mm × 2.10mm body, and matte tin-plated terminals. Pin 1 is marked by a bar on top-side marking; orientation follows JEDEC MO-178 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input node for first diode element; used for signal injection or clamp anode in bidirectional protection schemes. |
| 2 | Cathode 1 | Return path for first diode; commonly tied to reference rail (e.g., VCC, GND, or bias voltage). |
| 3 | No Connect | Internally unconnected; must remain floating - not usable as thermal pad or ground tie. |
| 4 | Cathode 2 | Shared or independent return for second diode; enables dual-rail clamping or differential signal termination. |
| 5 | Anode 2 | Second signal path input; supports independent control of two signal lines (e.g., D+ and D− in USB). |
| 6 | NC / Dummy | Non-functional terminal; no internal bond wire - omitted in simplified schematics but retained for mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching speed | 4ns trr enables use in 10–50MHz digital signal routing without timing skew or overshoot degradation. |
| Low forward voltage | 0.72V max at 5mA reduces conduction loss in battery-backed real-time clock (RTC) backup paths and low-voltage microcontroller I/O clamps. |
| Low reverse leakage | 100nA max at 70V ensures minimal quiescent current in high-impedance analog front-end bias networks over full temperature range. |
| Small SOT363 footprint | 2.15mm × 2.10mm area saves >40% board space vs. SOIC-8 dual diodes - critical for wearables and IoT edge nodes. |
Applications
| USB 2.0 Data Line Protection | Industrial PLC Digital Input Conditioning |
|---|---|
|
Use Scenario: Clamping ESD transients on D+ and D− lines before USB PHY receiver input. IC Role / Device Role / Timing Role: Dual-channel bidirectional transient voltage suppressor with sub-4ns response. Use Value: Prevents latch-up in USB transceivers while preserving 480Mbps eye diagram integrity via 3.5pF capacitance. |
Use Scenario: Level-shifting and surge filtering for 24V dry-contact inputs feeding microcontroller GPIOs. IC Role / Device Role / Timing Role: Fast-switching clamp diode pair isolating field-side transients from logic-side protection circuitry. Use Value: Enables 1ms response to 1kV/µs surges without forward conduction distortion in optocoupler driver bias paths. |
| Automotive LIN Bus Node Clamping | Low-Power Sensor Interface Biasing |
|
Use Scenario: Protecting LIN transceiver pins against load-dump-induced spikes in body control modules. IC Role / Device Role / Timing Role: Dual-anode configuration referenced to battery rail for asymmetric overvoltage clamping. Use Value: Maintains AEC-Q101-compliant reliability while limiting bus voltage excursion to ≤18V during ISO 7637-2 Pulse 5a events. |
Use Scenario: Providing precision bias current to MEMS pressure sensor Wheatstone bridges in medical wearables. IC Role / Device Role / Timing Role: Low-leakage forward-biased diode generating stable ~0.65V reference for bridge excitation. Use Value: Delivers <±0.5% drift over –40°C to +85°C due to matched diode characteristics and <100nA IR variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast-switching dual diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV99W-7-F | Higher VR (100V), slower trr (6ns), higher CT (4.0pF) | Preferred in 48V telecom power monitoring where speed is secondary to voltage margin | Select when >80V reverse standoff is required and 2ns speed penalty is acceptable |
| MMBD7000LT1G | Single diode, lower VF (0.65V), same trr (4ns), identical SOT23-3 package | Used where discrete dual placement is preferred over integrated dual for layout flexibility | Choose when board space allows separate placement and tighter VF tolerance is needed |
Compared with BAV99W-7-F and MMBD7000LT1G, MMBD4448HTW-7 offers optimal balance of speed (4ns), capacitance (3.5pF), and dual-diode integration in SOT363 - making it superior for space-constrained, high-frequency signal integrity applications like USB 2.0 and LIN bus nodes.
Availability
MMBD4448HTW-7 is available at Aetrix Electronics and suitable for industrial PLC digital input conditioning, automotive LIN bus node clamping, and USB 2.0 data line protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MMBD4448HTW-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 targets high-reliability signal routing in automotive, industrial, and consumer electronics - designed specifically for fast-switching, low-capacitance, and thermally robust dual-diode functions in space-constrained layouts.
FAQ
Is MMBD4448HTW-7 AEC-Q101 qualified?
No - MMBD4448HTW-7 itself is not AEC-Q101 qualified. However, the functionally identical MMBD4448HADWQ-7-F variant is fully AEC-Q101 qualified, PPAP capable, and manufactured in IATF16949-certified facilities. For automotive applications, that part number must be specified.
What is the pin configuration for MMBD4448HTW-7 in SOT363?
MMBD4448HTW-7 uses Pin 1 = Anode 1, Pin 2 = Cathode 1, Pin 3 = NC, Pin 4 = Cathode 2, Pin 5 = Anode 2, Pin 6 = NC. This matches the "dual common-cathode" configuration per Diodes' DS30153 Rev. 20–2, confirmed by top-marking "KAA" and SOT363 pinout diagrams.
Can MMBD4448HTW-7 replace BAV99 in existing designs?
Yes - with layout adaptation. Both are dual diodes in SOT363/SOT23-6 packages, but MMBD4448HTW-7 has faster trr (4ns vs. 6ns), lower CT (3.5pF vs. 4.0pF), and tighter VF spec. SOT363 footprints are identical; verify pin mapping (BAV99 uses different anode/cathode assignment) before substitution.
What is the maximum continuous forward current rating?
The absolute maximum continuous forward current is 500mA per diode element, measured with the device mounted on an FR-4 PCB using a 1-inch square, 2oz copper pad layout (per Note 5 in DS30153). Derating begins above +25°C ambient per Figure 1's 625°C/W RθJA curve.
MMBD4448HTW-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:
- 3 Independent
- 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
MMBD4448HTW-7 FAQ
1.How can I place an order for MMBD4448HTW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBD4448HTW-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 MMBD4448HTW-7 reliable?
The price and inventory of MMBD4448HTW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBD4448HTW-7 is usually 5 days.
3.What payment methods are accepted for MMBD4448HTW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBD4448HTW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBD4448HTW-7?
MMBD4448HTW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBD4448HTW-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 MMBD4448HTW-7?
For technical support, including MMBD4448HTW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBD4448HTW-7 requirements.
6.How does Aetrix verify that MMBD4448HTW-7 is sourced from the original manufacturer or authorized distributors?
All MMBD4448HTW-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 MMBD4448HTW-7 meets industry standards.
7.What is the process for return or replacement of MMBD4448HTW-7?
All MMBD4448HTW-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBD4448HTW-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 MMBD4448HTW-7 part is unused and in its original packaging.
Return procedure for MMBD4448HTW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBD4448HTW-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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