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Diodes Incorporated MMBD4448HTA-7-F
- Part No.:
- MMBD4448HTA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
MMBD4448HTA-7-F.pdf
- Description:
- DIODE ARRAY GP 80V 250MA SOT-523
- Quantity:
- Payment:
- Shipping:
Inventory:9,525
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Product details
Overview
MMBD4448HTA-7-F from Diodes Incorporated is a surface-mount fast-switching silicon switching diode in SOT523 package, rated for 80 V peak repetitive reverse voltage, 500 mA forward current, and 4.0 ns reverse recovery time. It delivers high conductance with VF = 0.72 V at IF = 10 mA and low junction-to-ambient thermal resistance (833 °C/W), enabling use in compact DC-DC converter flyback snubbers and high-frequency signal routing.
For engineers reviewing the MMBD4448HTA-7-F datasheet, MMBD4448HTA-7-F pinout, MMBD4448HTA-7-F application, or MMBD4448HTA-7-F equivalent, key selection criteria include ultra-fast trr ≤ 4.0 ns, low VF at 10–100 mA, SOT523 footprint compatibility, and AEC-Q101 readiness for automotive signal conditioning.
Technical Context
This diode operates as a unidirectional, single-element PN junction device optimized for high-speed on/off control in low-power signal and power management paths. Its design emphasizes minimal charge storage and rapid carrier recombination to achieve sub-5 ns reverse recovery under IF = 5 mA / VR = 6 V conditions.
Thermal performance is defined by FR-4 board mounting per Diodes' recommended pad layout, delivering 150 mW power dissipation at 25°C ambient and linear derating to zero at 150°C. The device supports operation across –55°C to +150°C, with leakage current tightly controlled at ≤30 µA at VR = 25 V and TJ = 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRM / VRRM | 100 V / 80 V - Supports 70 V DC blocking with 10 V margin before non-repetitive breakdown. |
| IFM | 500 mA - Sustains continuous forward conduction in low-current switching nodes without thermal runaway. |
| trr | 4.0 ns - Enables clean edge transitions in >100 MHz clock distribution and pulse shaping circuits. |
| VF @ 10 mA | 0.72 V - Minimizes forward drop and power loss in battery-powered logic-level clamping. |
| CT @ 6 V | 3.5 pF - Limits capacitive loading in RF detector and high-speed data line protection. |
| RθJA | 833 °C/W - Requires minimal PCB copper area for thermal management in space-constrained layouts. |
Pinout & Package
Package: SOT523 - ultra-small plastic surface-mount package (1.60 × 1.60 × 0.50 mm), lead-free, halogen-free, RoHS 3 compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node during conduction; polarity-marked side of die. |
| Cathode (Pin 2) | Forward current exit / reverse-blocking terminal | Internally tied to molded plastic tab; requires PCB trace connection to ground or return path. |
| Case / Exposed Pad (Pin 3) | Non-electrical mechanical anchor | No internal electrical connection; provides mechanical stability and thermal mass for solder joint reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast switching | trr = 4.0 ns enables use in >100 MHz digital signal routing without timing skew. |
| High conductance | VF = 0.72 V @ 10 mA reduces forward loss in low-voltage logic interface clamps. |
| SOT523 footprint | 1.6 mm × 1.6 mm body allows placement in dense portable electronics PCBs. |
| AEC-Q101 readiness | Manufactured in IATF 16949-certified facilities; supports PPAP for automotive signal path designs. |
Applications
| USB Data Line Protection | Low-Voltage Logic Clamping |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines from ESD transients and overvoltage coupling. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between data line and VBUS/GND rails. Use Value: 3.5 pF capacitance avoids signal integrity degradation at 480 Mbps; 4.0 ns trr prevents latch-up during fast transient events. | Use Scenario: Level-shifting and overvoltage clamping between 1.8 V/3.3 V logic domains. IC Role / Device Role / Timing Role: Passive clamp limiting input voltage to safe logic thresholds. Use Value: 0.72 V forward drop ensures reliable clamping at 1.8 V supply; SOT523 fits 0.5 mm pitch routing. |
| DC-DC Converter Snubber | RF Detector Input Stage |
Use Scenario: Suppressing voltage spikes across MOSFET drains in 500 kHz–1 MHz buck converters. IC Role / Device Role / Timing Role: Fast-recovery snubber diode in RCD network. Use Value: 4.0 ns trr captures energy before MOSFET turn-on; 80 V rating covers typical 24 V input designs. | Use Scenario: Demodulating AM signals in 100–500 MHz ISM-band receivers. IC Role / Device Role / Timing Role: Zero-bias envelope detector element. Use Value: Low CT (3.5 pF) preserves RF bandwidth; low IR (<25 nA @ 20 V) maintains detector sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast-switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAS16LT1G | trr = 4.0 ns (same), VF = 0.85 V @ 10 mA (higher), SOT23 package (larger footprint) | Higher VF increases power loss in battery-critical apps; larger SOT23 may not fit ultra-dense layouts | Select when legacy SOT23 compatibility is required and 0.13 V higher VF is acceptable. |
| 1N4148W-7-F | trr = 4.0 ns (same), VF = 0.72 V @ 10 mA (identical), SOD-123 package (2.8 × 1.7 mm) | SOD-123 occupies ~2.5× more board area than SOT523; same thermal resistance but lower power density | Select when higher surge current (IFSM = 4 A vs. 1 A) is needed and space permits larger package. |
Compared with BAS16LT1G and 1N4148W-7-F, MMBD4448HTA-7-F uniquely combines SOT523 miniaturization, 0.72 V VF at 10 mA, and AEC-Q101 manufacturing readiness-making it optimal for next-gen automotive infotainment signal routing and wearable sensor interface designs where size and low-loss clamping are co-constrained.
Availability
MMBD4448HTA-7-F is available at Aetrix Electronics and suitable for USB interface protection, low-voltage logic clamping, and DC-DC snubber circuits requiring stable component supply and long-term production continuity.
Supply support for MMBD4448HTA-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This device belongs to Diodes' high-speed switching diode product line, engineered specifically for miniaturized, high-frequency signal integrity and power management applications in automotive, industrial, and consumer electronics.
FAQ
Is MMBD4448HTA-7-F qualified to AEC-Q101?
No, MMBD4448HTA-7-F itself is not AEC-Q101 certified, but it is manufactured in IATF 16949-certified facilities and supports PPAP documentation upon request. Diodes offers AEC-Q101-qualified variants under the MMBD4448HTC-7-F and MMBD4448HTS-7-F part numbers for automotive-grade deployment.
What is the maximum operating temperature for continuous use?
The device supports continuous operation from –55°C to +150°C ambient. At 150°C, derated power dissipation is zero per the published curve; for sustained 150 mW operation, ambient must remain ≤25°C with recommended FR-4 pad layout and no airflow.
Can this diode be used in bidirectional ESD protection?
No-it is a single-anode/single-cathode unidirectional diode. For bidirectional ESD protection, two devices must be configured in series opposition, or a dedicated TVS array such as Diodes' D3V3Z5U2P should be selected instead.
Does the SOT523 package have an exposed thermal pad?
No-the SOT523 package has no electrically or thermally functional exposed pad. Thermal transfer occurs solely through the leads and molded compound; the third terminal is a non-connected mechanical anchor, not a thermal slug.
MMBD4448HTA-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 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-523
MMBD4448HTA-7-F FAQ
1.How can I place an order for MMBD4448HTA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBD4448HTA-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 MMBD4448HTA-7-F reliable?
The price and inventory of MMBD4448HTA-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 MMBD4448HTA-7-F is usually 5 days.
3.What payment methods are accepted for MMBD4448HTA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBD4448HTA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBD4448HTA-7-F?
MMBD4448HTA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBD4448HTA-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 MMBD4448HTA-7-F?
For technical support, including MMBD4448HTA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBD4448HTA-7-F requirements.
6.How does Aetrix verify that MMBD4448HTA-7-F is sourced from the original manufacturer or authorized distributors?
All MMBD4448HTA-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 MMBD4448HTA-7-F meets industry standards.
7.What is the process for return or replacement of MMBD4448HTA-7-F?
All MMBD4448HTA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBD4448HTA-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 MMBD4448HTA-7-F part is unused and in its original packaging.
Return procedure for MMBD4448HTA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBD4448HTA-7-F Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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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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