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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Infineon Technologies MMBD914LT3HTMA1

Name: MMBD914LT3HTMA1
Brand: Infineon Technologies
SKU: MMBD914LT3HTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MMBD914LT3HTMA1

Manufacturer:: Infineon Technologies

Category:: Single Diodes

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: MMBD914LT3HTMA1.pdf

Description:: DIODE GEN PURP 100V 250MA SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:4,777

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Product details

Overview

MMBD914LT3HTMA1 from Infineon Technologies is a silicon switching diode in SOT-23 package, designed for high-speed signal routing and clamping in digital logic interfaces. It features 100 V reverse voltage rating, 4.5 A non-repetitive surge current capability, 4 ns reverse recovery time, and 1000 mV forward voltage at 50 mA - enabling reliable operation in 5 V TTL/CMOS line protection and pulse shaping circuits.

For engineers reviewing the MMBD914LT3HTMA1 datasheet, MMBD914LT3HTMA1 pinout, MMBD914LT3HTMA1 application, or MMBD914LT3HTMA1 equivalent, key selection criteria include verified trr ≤ 4 ns, VR = 100 V compliance, SOT-23 thermal resistance (RthJS ≤ 260 K/W), and AEC-Q101 qualification for automotive-grade reliability validation.

Technical Context

This diode operates as a unidirectional, single-junction silicon PN switch with fast minority-carrier recombination kinetics. Its 2 pF junction capacitance at 0 V and 1 MHz supports high-frequency signal integrity up to ~100 MHz in clipping and waveform conditioning paths.

The device exhibits low leakage (<0.025 µA at 20 V, 25°C) and stable VF drift over temperature (±150 mV from −65°C to +150°C at IF = 10 mA), making it suitable for precision timing reference clamping and ESD transient suppression in mixed-signal front-ends.

Key Specifications

Parameter	Value and Actual Design Meaning
Reverse Voltage (VR)	100 V - supports direct interface with 48 V industrial bus lines and 24 V automotive supply rails without breakdown.
Reverse Recovery Time (trr)	4 ns - enables clean switching in >25 MHz clock distribution and data strobe lines without tail current distortion.
Forward Voltage (VF)	1000 mV @ 50 mA - ensures minimal voltage drop in series-connected logic-level translation paths.
Junction Capacitance (CT)	2 pF @ 0 V, 1 MHz - preserves signal edge fidelity in high-speed digital I/O termination networks.
Surge Current (IFSM)	4.5 A @ 1 µs - withstands ESD-induced transients per IEC 61000-4-2 Level 4 (8 kV contact discharge).
Junction Temperature (Tj)	150 °C - allows continuous operation in under-hood automotive ECUs and sealed industrial controllers.

Pinout & Package

SOT-23 surface-mount package with gull-wing leads, 1.3 mm lead pitch, and 2.4 mm × 1.3 mm footprint. Thermal resistance from junction to solder point is ≤260 K/W.

Pin/Terminal	Circuit Role	Design Meaning
1 (Anode)	Current entry node	Connected to signal source or positive rail in clamping configurations; polarity-sensitive for directional transient suppression.
2 (Cathode)	Current exit node	Bonded to ground or lower-potential node; forms low-impedance path during reverse-biased transient events.
3 (Collector / NC)	No connection	Internally unconnected; electrically isolated - must not be tied to any net to avoid parasitic coupling or thermal stress.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive powertrain and body electronics per stress test requirements including HTOL, TC, and HAST.
Pb-free RoHS-compliant	Meets EU Directive 2011/65/EU with SnAgCu solder compatibility and no intentional lead content.
Low leakage IR	≤0.025 µA at 20 V, 25°C - minimizes standby current in always-on sensor bias networks.
Fast trr	4 ns measured at IF = IR = 10 mA - eliminates switching-induced glitches in synchronous data capture circuits.

Applications

Logic-Level Clamping

ESD Protection Diode

Use Scenario: Protecting 3.3 V FPGA I/O pins against overshoot from adjacent 5 V bus switching noise.

IC Role / Device Role: Unidirectional voltage clamp limiting input swing to safe levels below absolute maximum ratings.

Use Value: 100 V VR and 4 ns trr prevent latch-up while maintaining signal integrity across 10–50 MHz data rates.

Use Scenario: Front-end protection for USB 2.0 D+/D− lines exposed to human-body-model ESD events.

IC Role / Device Role: Transient voltage suppressor diverting >8 kV contact discharge energy to ground.

Use Value: 4.5 A IFSM and <0.1 µA IR at 75 V ensure robust immunity without degrading high-speed eye diagram margins.

Digital Signal Conditioning

Automotive CAN Bus Termination

Use Scenario: Waveform sharpening of slow-rising microcontroller reset signals before entering Schmitt-trigger inputs.

IC Role / Device Role: Fast-switching diode in series-shunt configuration to clip negative excursions and limit positive overshoot.

Use Value: 2 pF CT and 1000 mV VF enable sub-nanosecond edge control without loading source impedance.

Use Scenario: Bias stabilization and transient suppression on 12 V CAN_H/CAN_L differential pair in engine control modules.

IC Role / Device Role: Reverse-biased clamping diode across termination resistors to absorb load-dump spikes.

Use Value: AEC-Q101 qualification and 150 °C Tj rating ensure uninterrupted operation during under-hood thermal cycling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar switching diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BAT54LT1G	Lower VR (30 V), higher CT (10 pF), trr = 5 ns	Not suitable for >40 V rail clamping; better for low-voltage RF detection	Select only for 3.3 V/5 V logic where VR margin is not critical
1N4148W-7-F	Higher VF (1250 mV @ 100 mA), same VR (100 V), trr = 4 ns	Same clamping capability but higher conduction loss in high-duty-cycle paths	Prefer when cost sensitivity outweighs forward-loss optimization

Compared with MMBD914LT3HTMA1, BAT54LT1G trades off voltage headroom and capacitance for lower cost in low-voltage designs, while 1N4148W-7-F maintains identical surge and speed specs but increases forward conduction loss by ~250 mV - impacting efficiency in battery-powered signal chains.

Availability

MMBD914LT3HTMA1 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and high-speed test equipment requiring stable component supply and long-term lifecycle assurance.

Supply support for MMBD914LT3HTMA1 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global R&D and wafer fabrication infrastructure.

This diode belongs to Infineon's SMBD/MMBD high-speed switching family, engineered specifically for AEC-Q101-compliant signal integrity preservation in automotive and industrial digital interfaces.

FAQ

Is MMBD914LT3HTMA1 pin-compatible with standard SOT-23 diodes like 1N4148?

Yes - Pin 1 is anode, Pin 2 is cathode, and Pin 3 is internally unconnected (NC), matching the industry-standard SOT-23 diode pinout. This allows direct PCB footprint reuse in legacy 1N4148 designs, provided VR and trr requirements are met.

What is the maximum operating temperature for continuous DC forward conduction?

The device supports continuous operation up to 150 °C junction temperature. At ambient temperatures ≤85 °C and with PCB copper area ≥25 mm² per pad, it sustains 250 mA DC forward current without exceeding thermal limits per its 370 mW Ptot rating.

Does this diode meet automotive qualification standards?

Yes - it is fully qualified to AEC-Q101 Rev D, including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress test (HAST). Certificate documentation is available upon request for Tier 1 automotive program validation.

Can MMBD914LT3HTMA1 be used in bidirectional ESD protection configurations?

No - it is a unidirectional diode. For bidirectional protection, two devices must be connected in series opposition (anode-to-anode or cathode-to-cathode), or a dedicated dual-rail TVS like ESD5Z5.0T1G should be selected instead.

MMBD914LT3HTMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 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 @ 75 V

Capacitance @ Vr, F:: 2pF @ 0V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT23

Operating Temperature - Junction:: 150°C (Max)

MMBD914LT3HTMA1 FAQ

1.How can I place an order for MMBD914LT3HTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MMBD914LT3HTMA1 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 MMBD914LT3HTMA1 reliable?

The price and inventory of MMBD914LT3HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBD914LT3HTMA1 is usually 5 days.

3.What payment methods are accepted for MMBD914LT3HTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBD914LT3HTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MMBD914LT3HTMA1?

MMBD914LT3HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MMBD914LT3HTMA1 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 MMBD914LT3HTMA1?

For technical support, including MMBD914LT3HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBD914LT3HTMA1 requirements.

6.How does Aetrix verify that MMBD914LT3HTMA1 is sourced from the original manufacturer or authorized distributors?

All MMBD914LT3HTMA1 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 MMBD914LT3HTMA1 meets industry standards.

7.What is the process for return or replacement of MMBD914LT3HTMA1?

All MMBD914LT3HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with MMBD914LT3HTMA1, 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 MMBD914LT3HTMA1 part is unused and in its original packaging.

Return procedure for MMBD914LT3HTMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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