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Vishay General Semiconductor - Diodes Division 1.5SMC75A-M3/9AT
- Part No.:
- 1.5SMC75A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75A-M3/9AT.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,693
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Product details
Overview
1.5SMC75A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 75 V breakdown voltage (VBR = 71.3–78.8 V at IT = 1.0 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 - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the 1.5SMC75A-M3/9AT datasheet, 1.5SMC75A-M3/9AT pinout, 1.5SMC75A-M3/9AT application, or 1.5SMC75A-M3/9AT equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, 150 °C max junction temperature, low incremental surge resistance, and AEC-Q101 qualification eligibility via HM3 suffix variants.
Technical Context
The 1.5SMC75A-M3/9AT operates as a clamping-type TVS diode with avalanche breakdown behavior, triggered when reverse voltage exceeds its specified VBR range. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
Thermally, it exhibits RθJA = 75 °C/W (junction-to-ambient) and RθJL = 15 °C/W (junction-to-leads), supporting reliable operation under repetitive 0.01% duty cycle pulses on standard 8.0 mm × 8.0 mm copper pads. The cathode band denotes polarity, and it is rated for -65 °C to +150 °C operating junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V at IT = 1.0 mA - defines precise avalanche initiation threshold for repeatable clamping |
| VWM | 64.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | ≤104 V at 14.6 A - clamped voltage during 1500 W transient, limiting stress on downstream components |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity for industrial-grade protection |
| IFSM | 200 A (8.3 ms half-sine) - forward surge rating for accidental polarity reversal events |
| TJ max | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak), RoHS-compliant and halogen-free (M3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., 48 V supply rail); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24–48 V systems |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot during transients, reducing risk of latch-up or gate oxide damage in MOSFETs |
| Glass-passivated junction | Ensures long-term stability of leakage current and breakdown voltage across temperature and life cycles |
| MSL Level 1 rating | Supports standard Pb-free reflow without preconditioning, compatible with automated SMT assembly |
| AEC-Q101 qualification path | M3 suffix indicates halogen-free, RoHS-compliant construction; HE3/HM3 variants are AEC-Q101 qualified |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 64.1 V. Use Value: Limits transient voltage to ≤104 V, preventing damage to MCU power inputs and CAN transceivers. |
Use Scenario: Shielding 24 V digital input channels from field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input line, absorbing inductive kickback from solenoid drivers. Use Value: Maintains signal integrity by suppressing >1 kV transients within <1 ns, avoiding false triggering of optocouplers. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Safeguarding PoE-powered equipment front-end circuits from Ethernet cable ESD and surge coupling. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input, coordinated with secondary-side TVS and filtering. Use Value: Handles 1500 W pulses without degradation, meeting GR-1089-CORE Level 3 telecom surge requirements. |
Use Scenario: Protecting H-bridge gate drivers in smart washing machine motor inverters from back-EMF spikes. IC Role / Device Role / Timing Role: Unidirectional clamp on low-side FET source node, referenced to system ground. Use Value: Withstands 200 A non-repetitive forward surge, surviving repeated motor stall conditions. |
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-E3/52T | Lower peak power (600 W), SMB package (smaller footprint, higher RθJA = 85 °C/W) | Suitable for space-constrained consumer electronics; insufficient for 1500 W industrial surges | Select only if system-level testing confirms 600 W clamping meets IEC 61000-4-5 immunity requirements. |
| 1.5KE75A-T | Through-hole DO-201AE package, same VBR/VC, but slower thermal recovery and no MSL Level 1 rating | Used in legacy designs or prototyping where SMT assembly is unavailable | Prefer 1.5SMC75A-M3/9AT for volume production requiring automated placement and lead-free reflow compliance. |
Compared with SMBJ75A-E3/52T and 1.5KE75A-T, the 1.5SMC75A-M3/9AT uniquely combines 1500 W surge capability, SMC package manufacturability, halogen-free compliance, and thermal performance optimized for high-reliability 24–48 V embedded systems.
Availability
1.5SMC75A-M3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom DC feeds, and consumer appliance motor control requiring stable component supply and full traceability.
Supply support for 1.5SMC75A-M3/9AT 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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-energy transient suppression in demanding environments - delivering consistent clamping performance, low leakage, and robust surge endurance across automotive, industrial, and telecom power rails.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC75A-M3/9AT?
The 1.5SMC75A-M3/9AT has a specified breakdown voltage range of 71.3 V to 78.8 V at test current IT = 1.0 mA, representing ±5% tolerance around the nominal 75 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes from -65 °C to +150 °C.
Is the 1.5SMC75A-M3/9AT suitable for bidirectional transient protection?
No - the 1.5SMC75A-M3/9AT is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the 1.5SMC75CA-M3/9AT variant. Using the unidirectional 1.5SMC75A-M3/9AT on AC-coupled or floating lines may result in unintended conduction during negative excursions.
Does the 1.5SMC75A-M3/9AT meet AEC-Q101 qualification?
The base 1.5SMC75A-M3/9AT is halogen-free and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the HM3-suffixed automotive-grade variant (e.g., 1.5SMC75AHM3_A/I) which carries full AEC-Q101 qualification for stress-tested reliability in automotive applications.
What is the maximum clamping voltage of the 1.5SMC75A-M3/9AT under surge conditions?
The 1.5SMC75A-M3/9AT clamps to a maximum of 104 V when subjected to its rated peak pulse current of 14.6 A (10/1000 µs waveform). This VC value is guaranteed per Vishay's datasheet and defines the upper voltage limit imposed on protected circuitry during transient events.
How does the SMC package of the 1.5SMC75A-M3/9AT compare to SMA or SMB in surge handling?
The SMC (DO-214AB) package of the 1.5SMC75A-M3/9AT provides superior thermal dissipation and surge robustness versus smaller SMA (DO-214AC) or SMB (DO-214AA) packages - enabling its 1500 W rating. Its larger copper pad area (8.0 mm × 8.0 mm) lowers thermal resistance (RθJA = 75 °C/W), sustaining higher peak currents without junction overheating.
1.5SMC75A-M3/9AT 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC75A-M3/9AT FAQ
1.How can I place an order for 1.5SMC75A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75A-M3/9AT 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 1.5SMC75A-M3/9AT reliable?
The price and inventory of 1.5SMC75A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75A-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC75A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75A-M3/9AT?
1.5SMC75A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75A-M3/9AT 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 1.5SMC75A-M3/9AT?
For technical support, including 1.5SMC75A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75A-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC75A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75A-M3/9AT 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 1.5SMC75A-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC75A-M3/9AT?
All 1.5SMC75A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75A-M3/9AT, 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 1.5SMC75A-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC75A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75A-M3/9AT Tags
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