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Diodes Incorporated MMBD4448HTW-7-F
- Part No.:
- MMBD4448HTW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMBD4448HTW-7-F.pdf
- Description:
- DIODE ARRAY GP 80V 250MA SOT-363
- Quantity:
- Payment:
- Shipping:
Inventory:11,556
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Product details
Overview
MMBD4448HTW-7-F from Diodes Incorporated is a surface-mount fast-switching dual diode array in SOT363 package, configured as two independent high-speed switching diodes with 100V non-repetitive peak reverse voltage, 4ns maximum reverse recovery time, and 0.72V max forward voltage at 5mA. It serves in signal routing, clamping, and level-shifting circuits within industrial control logic and communication interface protection.
For engineers reviewing the MMBD4448HTW-7-F datasheet, MMBD4448HTW-7-F pinout, MMBD4448HTW-7-F application, or MMBD4448HTW-7-F equivalent, key selection criteria include reverse recovery speed, low capacitance (≤3.5pF), AEC-Q101 qualification status, thermal resistance (625°C/W), and SOT363 footprint compatibility with high-density PCB layouts.
Technical Context
This dual diode array integrates two discrete high-speed silicon switching diodes in a single compact SOT363 package. Each diode exhibits low forward voltage drop (0.62–0.72V at 5–10mA), tight reverse leakage control (≤100nA at 70V), and minimal junction capacitance (≤3.5pF at 6V).
The device operates across –55°C to +150°C and supports 500mA continuous forward current per element. Its 4ns reverse recovery time enables reliable performance in 10–50MHz digital signal conditioning, ESD-tolerant I/O buffering, and transient voltage suppression in mixed-signal interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Package | SOT363 - 6-pin, dual-diode configuration with common cathode or independent terminals per datasheet pinout; enables space-efficient dual-channel routing on 0.65mm pitch PCBs. |
| Reverse Recovery Time | 4.0 ns max - ensures minimal switching distortion in >10MHz clock/data lines and fast edge-rate digital signal paths. |
| Forward Voltage | 0.72 V max @ 5 mA - reduces conduction loss in low-voltage logic-level translation and bias networks. |
| Reverse Leakage | 100 nA max @ 70 V - maintains signal integrity in high-impedance sensing nodes and precision reference clamping. |
| Junction Capacitance | 3.5 pF max @ 6 V - minimizes capacitive loading on RF-sensitive or high-speed data lines (e.g., USB 2.0, LVDS). |
| Peak Reverse Voltage | 100 V non-repetitive - supports transient overvoltage handling in 24V industrial bus interfaces and relay driver flyback suppression. |
| Thermal Resistance | 625 °C/W - defines power derating slope (200 mW at 25°C ambient); requires thermal pad design for sustained >100mW operation. |
Pinout & Package
SOT363 package: 6-pin, small-outline transistor outline with exposed thermal pad (not electrically connected), 2.15 mm × 2.10 mm body, 0.65 mm lead pitch. Pin 1 marked by bar; orientation per Diodes DS30153 Rev. 20–2 Figure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input terminal for first diode; connects to signal source requiring clamping or steering. |
| 2 | Cathode 1 | Output/return path for Diode 1; commonly tied to reference rail or logic threshold. |
| 3 | No Connect | Internally unconnected; must be left floating or grounded per layout guidelines to avoid parasitic coupling. |
| 4 | Cathode 2 | Shared or independent return path for Diode 2; enables dual-rail or differential clamping topologies. |
| 5 | Anode 2 | Second signal input node; supports independent channel routing without cross-talk. |
| 6 | NC / Thermal Pad | Non-electrical thermal slug; soldered to PCB copper for enhanced heat dissipation (not functional pin). |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching speed | 4ns trr enables clean edge preservation in 10–50MHz digital signal paths without overshoot or ringing. |
| Low forward voltage | 0.72V max at 5mA reduces voltage drop in 3.3V/5V logic-level translation and active pull-up networks. |
| Low reverse leakage | 100nA max at 70V maintains accuracy in high-Z analog monitoring and precision reference clamp circuits. |
| Small SOT363 footprint | 2.15×2.10 mm body with 0.65mm pitch allows dual-diode functionality in <3.5 mm² board area. |
| AEC-Q101 qualified variant | MMBD4448HADWQ-7-F version available for automotive; MMBD4448HTW-7-F shares identical die and process but lacks formal PPAP documentation. |
Applications
| Industrial PLC I/O Protection | USB 2.0 Data Line Clamping |
|---|---|
|
Use Scenario: Protecting 24V digital input channels against ESD and inductive kickback in programmable logic controllers. IC Role / Device Role: Dual-diode clamping network limiting voltage excursions to ±0.7V above/below rails using internal diode forward conduction. Use Value: Prevents damage to downstream optocouplers and microcontroller GPIOs while maintaining <10ns response to transients per IEC 61000-4-2 Level 4. |
Use Scenario: Bidirectional ESD protection on D+ and D− lines of embedded USB 2.0 peripherals. IC Role / Device Role: Low-capacitance (3.5pF) dual diode array shunting ESD pulses to VBUS and GND without degrading 480Mbps signal integrity. Use Value: Passes USB-IF compliance testing with <0.1dB insertion loss at 240MHz and no eye diagram degradation beyond spec limits. |
| RS-485 Transceiver Bias Network | High-Speed Logic-Level Translation |
|
Use Scenario: Providing fail-safe bias for RS-485 receiver inputs during bus idle or open-circuit conditions. IC Role / Device Role: Dual diode pair establishing precise +125mV differential offset between A and B lines via resistor-diode networks. Use Value: Guarantees receiver output logic-high state during fault conditions, eliminating false triggering in multi-drop industrial networks. |
Use Scenario: Converting 5V CMOS logic outputs to 3.3V LVTTL-compatible levels in FPGA-to-microcontroller interconnects. IC Role / Device Role: Active clamping diode pair limiting high-side swing to VCC_IO + 0.72V while sinking excess current to 3.3V rail. Use Value: Enables robust level shifting without external resistors or dedicated translators, reducing BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast-switching diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54CWT-7-F | Higher VF (0.8V min @ 10mA), higher CT (10pF), same SOT363 package, no AEC-Q101 option. | Less suitable for <20MHz signal paths due to higher capacitance; acceptable for general-purpose clamping below 5MHz. | Select when cost sensitivity outweighs speed/capacitance requirements and automotive qualification is not needed. |
| NSR0230P2T5G | Single diode, SOD-523 package, 0.35V VF @ 100mA, 12pF CT, 30V VR, not dual-element. | Requires two devices for dual-channel use; unsuitable for space-constrained dual-rail designs. | Choose only if ultra-low VF dominates design priority and board area permits duplication of footprint. |
Compared with BAT54CWT-7-F and NSR0230P2T5G, MMBD4448HTW-7-F uniquely delivers sub-4ns recovery, ≤3.5pF capacitance, and true dual-diode integration in SOT363-making it optimal for high-frequency signal integrity and compact industrial interface protection where timing and layout density are critical.
Availability
MMBD4448HTW-7-F is available at Aetrix Electronics and suitable for industrial PLC I/O protection, USB 2.0 data line clamping, and RS-485 transceiver bias networks requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MMBD4448HTW-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-performance, high-reliability components for industrial, computing, and communications markets.
The MMBD4448H series belongs to Diodes' fast-switching diode portfolio, engineered specifically for high-speed signal routing, ESD protection, and logic-level translation in space-constrained, thermally demanding environments.
FAQ
Is MMBD4448HTW-7-F AEC-Q101 qualified?
No, MMBD4448HTW-7-F is not AEC-Q101 qualified. The AEC-Q101 variant is MMBD4448HADWQ-7-F, which includes full PPAP documentation and is manufactured in IATF16949-certified facilities. MMBD4448HTW-7-F shares identical die and process but lacks formal automotive qualification records and change-control tracking.
What is the pin configuration for MMBD4448HTW-7-F in SOT363?
Per Diodes DS30153 Rev. 20–2, Pin 1 = Anode 1, Pin 2 = Cathode 1, Pin 3 = NC, Pin 4 = Cathode 2, Pin 5 = Anode 2, Pin 6 = thermal pad (non-functional). Marking "KAA" on top surface confirms MMBD4448HTW identity; orientation bar denotes Pin 1 location.
Can MMBD4448HTW-7-F replace BAT54CWT-7-F in high-speed applications?
Yes, but with measurable benefit: MMBD4448HTW-7-F offers 4ns trr vs. BAT54CWT-7-F's 5ns, and 3.5pF CT vs. 10pF. In >10MHz signal paths, this reduces timing skew and insertion loss. However, BAT54CWT-7-F has higher IFM (200mA vs. 500mA per diode), so verify current handling in pulsed applications.
Does MMBD4448HTW-7-F require special PCB layout considerations?
Yes. The SOT363 thermal pad (Pin 6) must be soldered to a ≥10 mm² copper pour for thermal management. Avoid vias directly under the pad unless filled and capped. Maintain ≥0.2mm soldermask dam between pins 1–2 and 4–5 to prevent bridging. Follow Diodes' recommended pad layout (X=0.42mm, Y=0.60mm, Y1=2.50mm) for reliable reflow yield.
MMBD4448HTW-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
- 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-F FAQ
1.How can I place an order for MMBD4448HTW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBD4448HTW-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 MMBD4448HTW-7-F reliable?
The price and inventory of MMBD4448HTW-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 MMBD4448HTW-7-F is usually 5 days.
3.What payment methods are accepted for MMBD4448HTW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBD4448HTW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBD4448HTW-7-F?
MMBD4448HTW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBD4448HTW-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 MMBD4448HTW-7-F?
For technical support, including MMBD4448HTW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBD4448HTW-7-F requirements.
6.How does Aetrix verify that MMBD4448HTW-7-F is sourced from the original manufacturer or authorized distributors?
All MMBD4448HTW-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 MMBD4448HTW-7-F meets industry standards.
7.What is the process for return or replacement of MMBD4448HTW-7-F?
All MMBD4448HTW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBD4448HTW-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 MMBD4448HTW-7-F part is unused and in its original packaging.
Return procedure for MMBD4448HTW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBD4448HTW-7-F 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
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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