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Vishay General Semiconductor - Diodes Division SMPC64AN-M3/H
- Part No.:
- SMPC64AN-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC64AN-M3/H.pdf
- Description:
- TVS DIODE 64VWM 103VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:220
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Product details
Overview
SMPC64AN-M3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) in the TRANSZORB® family, designed for robust overvoltage protection of sensitive electronics. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), 14.6 A peak pulse current, and clamps to ≤103 V at rated surge - ideal for protecting automotive sensor signal lines against inductive switching transients.
For engineers reviewing the SMPC64AN-M3/H datasheet, SMPC64AN-M3/H pinout, SMPC64AN-M3/H application, or SMPC64AN-M3/H equivalent, this device is selected for high-energy transient suppression in AEC-Q101-compliant automotive subsystems where low-profile mounting, fast response (<1 ns), and stable clamping under repetitive surges are critical design requirements.
Technical Context
This unidirectional TVS diode uses silicon avalanche technology to provide precise voltage clamping during transient events. Its TO-277A (SMPC) package enables dual-anode/single-cathode configuration with cathode band marking, supporting high-current surge handling while maintaining low incremental surge resistance and fast response time.
The device operates across -55 °C to +150 °C junction temperature range and meets J-STD-020 MSL Level 1 (260 °C peak reflow). With 1.25 W steady-state power dissipation on FR4 PCB and thermal resistance RθJA ≤ 100 °C/W, it supports reliable operation in thermally constrained automotive ECUs and industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - ensures predictable avalanche turn-on within tight tolerance |
| VC @ IPPM | ≤103 V at 14.6 A - limits downstream voltage stress during 10/1000 μs surge |
| PPPM | 1500 W - handles high-energy transients per ISO 7637-2 Pulse 1/2a/5a without failure |
| IR @ VWM | ≤1.0 μA - negligible leakage current preserves signal integrity in high-impedance circuits |
| TJ max. | +150 °C - supports under-hood automotive environments and industrial enclosures |
| Package | SMPC (TO-277A) - 3-terminal surface-mount package with 1.1 mm profile for space-constrained layouts |
Pinout & Package
SMPC64AN-M3/H uses the SMPC (TO-277A) package: a 3-terminal surface-mount case with cathode band marking, matte tin-plated leads, and UL 94 V-0 molding compound. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H), compatible with standard SMT pick-and-place equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary anode connection | Connected to protected line (e.g., CAN_H or sensor output); forms one half of dual-anode structure |
| Anode 2 | Secondary anode connection | Internally tied to Anode 1; enables symmetric layout routing and enhanced current sharing during surge |
| Cathode | Common cathode terminal | Connected to ground or reference plane; carries full surge current during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Protects DC-biased signal lines (e.g., LIN, CAN, analog sensors) without forward conduction during normal operation |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Low profile (1.1 mm height) | Enables placement beneath connectors or in stacked PCB assemblies without mechanical interference |
| Halogen-free & RoHS-compliant | Meets automotive environmental compliance requirements (ELV, REACH) and supports lead-free assembly |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bay modules exposed to load dump and inductive kick. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ECU input to clamp transients before they reach ADC front-end or op-amp buffer. Use Value: Prevents latch-up or permanent damage to precision signal conditioning ICs by limiting voltage to ≤103 V during 1500 W surges. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair in vehicle communication gateways subjected to ISO 7637-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: Dual-anode configuration allows symmetrical placement on both bus lines with shared cathode to chassis ground. Use Value: Maintains bus integrity by clamping common-mode surges without disrupting differential signaling or introducing asymmetry. |
| Industrial PLC I/O Protection | Power Supply Input Clamping |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced transients. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to shunt surge energy before reaching optocoupler or level-shifter IC. Use Value: Ensures >100,000 surge cycles endurance due to low incremental surge resistance and stable clamping performance. |
Use Scenario: Secondary overvoltage protection on 64 V nominal DC input rails (e.g., telecom power supplies, battery management systems). IC Role / Device Role / Timing Role: Acts as crowbar-style clamp after primary fuse and MOV, providing precise voltage limiting when upstream protection fails. Use Value: Limits rail voltage to ≤103 V during fault conditions, preventing catastrophic failure of downstream DC-DC converters and microcontrollers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-M3/86A | DO-214AC package; 64 V VWM; 1500 W PPPM; single-anode configuration | Larger footprint (4.5 × 2.7 mm vs. 4.8 × 3.7 mm); lower thermal mass; no dual-anode symmetry | Select when board space permits larger outline and dual-anode routing is unnecessary |
| SMCJ64A-M3/86A | DO-214AB package; same VWM/PPPM; higher RθJA (~120 °C/W); single-anode | Higher profile (2.6 mm); less suitable for ultra-low-height designs; reduced surge cycle life under thermal cycling | Choose only if legacy DO-214AB footprint compatibility is required and height constraint is relaxed |
Compared with SMAJ64A-M3/86A and SMCJ64A-M3/86A, SMPC64AN-M3/H offers superior thermal performance (RθJM ≤ 3 °C/W), dual-anode symmetry for balanced PCB layout, and AEC-Q101 qualification - making it the preferred choice for new automotive and high-reliability industrial designs where compactness and surge endurance are prioritized.
Availability
SMPC64AN-M3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN bus nodes, industrial PLC I/O modules, and 64 V power supply inputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMPC64AN-M3/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 automotive-grade qualification.
The SMPC series was developed specifically for high-energy transient suppression in AEC-Q101-compliant automotive subsystems, combining low-profile packaging with robust surge handling and precise clamping characteristics.
FAQ
What is the exact polarity configuration of SMPC64AN-M3/H?
SMPC64AN-M3/H is a unidirectional TVS diode with dual-anode/single-cathode configuration. The cathode is marked by a band on the package body; Anode 1 and Anode 2 are internally connected and electrically identical. This structure allows symmetrical PCB routing and improved current sharing during high-energy transients, unlike single-anode alternatives.
Does SMPC64AN-M3/H meet AEC-Q101 requirements?
Yes, SMPC64AN-M3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" variant (SMPC64ANHM3/H) and documentation stating AEC-Q101 qualification applies to SMPC22AN through SMPC85AN. The "M3/H" version shares the same die and qualification - only differing in packaging and tape/reel configuration.
What is the clamping voltage of SMPC64AN-M3/H at its rated peak pulse current?
The maximum clamping voltage (VC) of SMPC64AN-M3/H is 103 V when subjected to its rated peak pulse current (IPPM) of 14.6 A under the standard 10/1000 μs waveform. This value is measured with cathode mounted on heatsink per the datasheet test condition and defines the upper voltage limit imposed on protected circuitry during surge events.
Can SMPC64AN-M3/H be used in bidirectional applications?
No, SMPC64AN-M3/H is strictly unidirectional and must not be used in AC or bidirectional signal paths. Its electrical structure supports conduction only from anode to cathode. For bidirectional protection, two SMPC64AN-M3/H devices must be connected in series opposition - or a dedicated bidirectional part like SMPC64CA should be selected instead.
What is the thermal resistance from junction to mount (RθJM) for SMPC64AN-M3/H?
The typical thermal resistance from junction to mount (RθJM) for SMPC64AN-M3/H is 2.5 °C/W, with a maximum of 3.0 °C/W, measured using JEDEC® 51-14 Transient Dual Interface Method. This low value enables efficient heat transfer to the PCB copper pour or heatsink, supporting sustained operation under repeated surge conditions in automotive under-hood environments.
SMPC64AN-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
SMPC64AN-M3/H FAQ
1.How can I place an order for SMPC64AN-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC64AN-M3/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 SMPC64AN-M3/H reliable?
The price and inventory of SMPC64AN-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC64AN-M3/H is usually 5 days.
3.What payment methods are accepted for SMPC64AN-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC64AN-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC64AN-M3/H?
SMPC64AN-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC64AN-M3/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 SMPC64AN-M3/H?
For technical support, including SMPC64AN-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC64AN-M3/H requirements.
6.How does Aetrix verify that SMPC64AN-M3/H is sourced from the original manufacturer or authorized distributors?
All SMPC64AN-M3/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 SMPC64AN-M3/H meets industry standards.
7.What is the process for return or replacement of SMPC64AN-M3/H?
All SMPC64AN-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMPC64AN-M3/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 SMPC64AN-M3/H part is unused and in its original packaging.
Return procedure for SMPC64AN-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC64AN-M3/H Tags
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