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Vishay General Semiconductor - Diodes Division 1.5SMC75AHM3/H
- Part No.:
- 1.5SMC75AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75AHM3/H.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,286
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Product details
Overview
1.5SMC75AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 75 V breakdown voltage (VBR = 71.3–78.8 V at IT = 1 mA), 64.1 V stand-off voltage (VWM), clamps to ≤104 V at 14.6 A peak pulse current (IPPM), and delivers 1500 W peak pulse power with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial motor drive control inputs, and telecom line card surge protection.
For engineers reviewing the 1.5SMC75AHM3/H datasheet, 1.5SMC75AHM3/H pinout, 1.5SMC75AHM3/H application, or 1.5SMC75AHM3/H equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, SMC (DO-214AB) package dimensions, thermal resistance (RθJA = 75 °C/W), and direct alternative part comparisons for ESD and lightning transient suppression design.
Technical Context
The 1.5SMC75AHM3/H operates as a unidirectional avalanche-clamping TVS diode, activated when reverse voltage exceeds its 71.3–78.8 V breakdown threshold. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and fast response (<1 ns), while low incremental surge resistance enables precise clamping under high-energy transients.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it supports repetitive surge duty cycles up to 0.01 % and handles 200 A non-repetitive forward surge (8.3 ms half-sine). Its halogen-free, RoHS-compliant construction meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V at 1 mA test current - defines reliable turn-on threshold for overvoltage triggering |
| VWM | 64.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | ≤104 V at 14.6 A - clamped voltage during 1500 W transient, limiting downstream IC stress |
| PPPM | 1500 W (10/1000 μs waveform) - peak surge energy handling capacity for lightning/inductive switching events |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for derating above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature, enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, matte tin-plated leads. Cathode indicated by band; anode is unmarked end. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); recommended pad layout: 8.0 mm × 8.0 mm copper per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased anode connection point | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode (unbanded end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation when properly mounted |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 μA), and long-term parameter stability |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units and ADAS sensor modules |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns |
| Halogen-free & RoHS-compliant | Meets automotive OEM environmental requirements and JEDEC J-STD-020 reflow standards |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching sensitive input circuitry. Use Value: Limits clamped voltage to ≤104 V, preventing damage to 5 V or 12 V interface ICs while maintaining signal integrity during 1500 W surges. |
Use Scenario: Safeguarding microcontroller GPIOs and optocoupler inputs connected to relay coils or contactor feedback signals in PLCs and VFDs. IC Role / Device Role / Timing Role: Fast-acting shunt device absorbing inductive kickback energy from 24 V DC control circuits. Use Value: Responds in <1 ns to suppress >100 V spikes, enabling reliable operation without added snubbers or RC networks. |
| Telecom Line Card Surge Protection | Power Supply Input Stage |
|
Use Scenario: Front-end protection of Ethernet PHYs, PoE injectors, and DSL line drivers against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs or DC bias rails to divert common-mode transients. Use Value: Withstands repeated 10/1000 μs surges up to 14.6 A, preserving signal fidelity and eliminating need for secondary protection stages. |
Use Scenario: Secondary-side overvoltage clamp on 48 V or 24 V DC-DC converter outputs feeding FPGA or ASIC power domains. IC Role / Device Role / Timing Role: Standoff-rated protector holding off normal operating voltage (64.1 V) while reacting to output overvoltage faults. Use Value: Clamps fault conditions to ≤104 V within nanoseconds, preventing latch-up or burnout of downstream regulators and load switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | Lower PPPM (600 W), SMB package (smaller footprint), same VBR range (71.3–78.8 V) | Not AEC-Q101 qualified; suitable for commercial-grade consumer or computing applications only | Select when board space is constrained and automotive qualification is unnecessary |
| 1.5KE75A | Through-hole DO-201 package, identical electrical specs but higher RθJA (~100 °C/W), no AEC-Q101 option | Limited to prototyping or legacy through-hole designs; incompatible with automated SMT lines | Choose only for manual assembly or backward compatibility with existing through-hole layouts |
Compared with 1.5SMC75AHM3/H, SMBJ75A-E3/52 offers smaller size but reduced surge margin and no automotive qualification, while 1.5KE75A sacrifices SMT compatibility and thermal performance for legacy mounting - making 1.5SMC75AHM3/H the optimal choice for production automotive and industrial SMT designs requiring AEC-Q101 compliance and 1500 W capability.
Availability
1.5SMC75AHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line cards, and DC-DC converter output protection requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for 1.5SMC75AHM3/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, robust surge handling, and seamless integration into automated SMT production lines.
FAQ
What is the breakdown voltage tolerance for 1.5SMC75AHM3/H?
The 1.5SMC75AHM3/H has a breakdown voltage (VBR) range of 71.3 V to 78.8 V at 1 mA test current, representing a ±5 % tolerance around the nominal 75 V rating. This tight tolerance ensures predictable clamping behavior across production lots and temperature extremes, critical for protecting 64 V-rated systems where overvoltage margin is constrained.
Is 1.5SMC75AHM3/H suitable for automotive applications?
Yes, the HM3 suffix confirms that 1.5SMC75AHM3/H is halogen-free, RoHS-compliant, and AEC-Q101 qualified. It has passed rigorous automotive reliability tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD, making it approved for use in engine control units, ADAS sensors, and body electronics where sustained operation at +125 °C ambient is required.
What is the maximum clamping voltage of 1.5SMC75AHM3/H under surge conditions?
The 1.5SMC75AHM3/H clamps to a maximum of 104 V at its rated peak pulse current of 14.6 A (10/1000 μs waveform). This clamping voltage is guaranteed across temperature and lifetime, ensuring downstream components such as 75 V-rated MOSFETs or 100 V capacitors remain within safe operating limits during surge events.
How does the SMC (DO-214AB) package of 1.5SMC75AHM3/H compare thermally to smaller packages like SMB?
The SMC package of 1.5SMC75AHM3/H delivers lower thermal resistance (RθJA = 75 °C/W) than SMB variants (typically ~125 °C/W), enabling higher sustained power dissipation and better derating above 25 °C ambient. When mounted on 8.0 mm × 8.0 mm copper pads, it maintains junction temperatures below 150 °C even under repetitive 1500 W surges - a key advantage for high-reliability industrial and automotive deployments.
Does 1.5SMC75AHM3/H require additional series impedance for optimal protection?
No, 1.5SMC75AHM3/H is designed for direct parallel placement across protected lines and ground. Its low dynamic impedance (<10 Ω typical) and sub-nanosecond response eliminate the need for external current-limiting resistors in most applications. However, for high-frequency signal lines (e.g., USB, CAN), a small series ferrite bead may be added to suppress RF noise without affecting clamping performance.
1.5SMC75AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC75AHM3/H FAQ
1.How can I place an order for 1.5SMC75AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75AHM3/H 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 1.5SMC75AHM3/H reliable?
The price and inventory of 1.5SMC75AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75AHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC75AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75AHM3/H?
1.5SMC75AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75AHM3/H 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 1.5SMC75AHM3/H?
For technical support, including 1.5SMC75AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75AHM3/H requirements.
6.How does Aetrix verify that 1.5SMC75AHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75AHM3/H 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 1.5SMC75AHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC75AHM3/H?
All 1.5SMC75AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75AHM3/H, 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 1.5SMC75AHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC75AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75AHM3/H Tags
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