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Vishay General Semiconductor - Diodes Division SMPC7.5A-M3/87A
- Part No.:
- SMPC7.5A-M3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC7.5A-M3/87A.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:9,086
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Product details
Overview
SMPC7.5A-M3/87A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMPC (TO-277A) package, designed for clamping inductive-switching transients on 7.5 V DC lines. It features a breakdown voltage of 8.33–9.21 V at 1.0 mA, clamps to ≤12.9 V at 100 A peak pulse current, and delivers 1500 W peak pulse power with ≤1.1 mm profile height.
For engineers reviewing the SMPC7.5A-M3/87A datasheet, SMPC7.5A-M3/87A pinout, SMPC7.5A-M3/87A application, or SMPC7.5A-M3/87A equivalent, this device is selected for robust overvoltage protection in space-constrained automotive sensor interfaces, industrial I/O modules, and consumer power rails where low-profile mounting and AEC-Q101-compliant alternatives are not required.
Technical Context
This TVS diode operates in avalanche breakdown mode to limit transient overvoltages before they damage downstream ICs or MOSFETs. Its unidirectional polarity requires cathode connection to the protected line and anode to ground, enabling precise clamping above the 7.5 V stand-off voltage without forward conduction during normal operation.
The SMPC7.5A-M3/87A uses a planar junction structure in a thermally efficient SMPC (TO-277A) package with dual anode terminals and single cathode - optimized for high surge current handling (100 A @ 10/1000 μs) while maintaining low incremental surge resistance and fast response time (<1 ns).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - defines minimum clamping threshold and ensures reliable turn-on before system damage |
| VWM | 7.5 V - maximum continuous reverse voltage the device blocks without leakage exceeding 1.0 μA |
| VC @ IPPM | ≤12.9 V at 100 A - peak clamped voltage during worst-case 10/1000 μs surge, limiting stress on protected circuitry |
| PPPM | 1500 W - peak pulse power rating determines survivability against lightning or ESD-like transients |
| TJ max | +150 °C - maximum junction temperature enables operation in under-hood or industrial ambient environments |
| Package | SMPC (TO-277A) - 3-terminal surface-mount package with dual anodes and single cathode, 1.1 mm typical height |
| MSL Level | Level 1 per J-STD-020 - supports standard reflow without moisture sensitivity concerns |
Pinout & Package
SMPC7.5A-M3/87A uses the SMPC (TO-277A) package: a 3-terminal surface-mount outline with dual anode terminals (Anode 1 and Anode 2) and one cathode terminal. The cathode band denotes the cathode end. Mounting pad layout follows JEDEC TO-277A standard with 0.268" × 0.186" footprint and 0.050" minimum solder mask clearance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Current return path during clamping | Connected to PCB ground plane; shares thermal and current-carrying duty with Anode 2 |
| Anode 2 | Current return path during clamping | Parallel anode terminal to reduce effective surge resistance and improve thermal dissipation |
| Cathode | Transient voltage sensing and clamping node | Connected to protected line (e.g., 7.5 V rail); band-marked end indicates polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile | 1.1 mm typical height - enables use in ultra-thin consumer electronics and tight board gaps |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = ~4.6 V) and higher energy absorption per unit voltage rise |
| Unidirectional configuration | Prevents forward conduction during normal 7.5 V operation while providing asymmetric surge suppression |
| Halogen-free & RoHS-compliant | M3 suffix confirms compliance with environmental regulations and JESD201 Class 2 whisker resistance |
| Automated placement compatible | Matte tin-plated leads meet J-STD-002 and JESD22-B102 solderability standards for high-yield SMT assembly |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 7.5 V supply lines feeding Hall-effect or temperature sensors in engine control units. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at sensor connector entry point to shunt load-dump and inductive kickback surges. Use Value: Clamps 100 A surges to ≤12.9 V, preventing latch-up or gate oxide damage in connected analog front-end ICs. |
Use Scenario: Safeguarding 7.5 V logic-level inputs on programmable logic controller (PLC) digital input modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Unidirectional TVS mounted between input terminal and ground to absorb coupling noise and relay coil flyback. Use Value: 1500 W peak pulse rating withstands repeated 10/1000 μs surges common in factory floor environments. |
| Consumer Power Rail Protection | Telecom DC Bias Line Protection |
Use Scenario: Securing 7.5 V bias rails in portable audio amplifiers or USB-C PD accessory circuits. IC Role / Device Role / Timing Role: Standoff clamping device placed upstream of LDO regulators to prevent overvoltage propagation during hot-swap events. Use Value: 7.5 V stand-off voltage ensures no leakage or conduction during nominal operation, preserving efficiency. |
Use Scenario: Protecting 7.5 V DC bias lines feeding RF front-end components in small-cell base stations. IC Role / Device Role / Timing Role: Fast-response TVS suppressing EFT bursts and induced surges on long PCB traces connecting bias supplies to active devices. Use Value: Sub-1 ns response time limits transient duration before downstream GaN FETs or LNAs experience overstress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/5A | DO-214AC (SMA) package; 1.5 mm height; 100 A IPPM; VC = 12.9 V same, but RθJA = 110 °C/W vs. 85 °C/W | Lower power density; less suitable for high-density layouts requiring <1.1 mm profile | Select when legacy SMA footprint exists and thermal margin allows higher junction temp rise |
| SMCJ7.5A-M3/87A | SMC (DO-214AB) package; 2.6 mm height; 100 A IPPM; VC = 12.9 V same, but larger footprint and higher thermal mass | Better surge endurance over repeated events due to higher thermal inertia, but incompatible with ultra-low-profile designs | Select when board space permits and long-term reliability under cyclic surges is prioritized over height constraint |
Compared with SMAJ7.5A-E3/5A and SMCJ7.5A-M3/87A, the SMPC7.5A-M3/87A delivers identical clamping performance in a 42% lower profile package with superior thermal resistance (85 °C/W), making it optimal for next-generation compact power systems where height and thermal efficiency are critical.
Availability
SMPC7.5A-M3/87A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power rail protection requiring stable component supply and consistent M3-grade halogen-free compliance.
Supply support for SMPC7.5A-M3/87A 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMPC series was developed to address demand for ultra-low-profile, high-power TVS diodes in automotive and industrial electronics, combining JEDEC TO-277A mechanical robustness with TransZORB® avalanche clamping performance.
FAQ
What is the exact breakdown voltage range for SMPC7.5A-M3/87A?
The SMPC7.5A-M3/87A has a guaranteed breakdown voltage range of 8.33 V to 9.21 V measured at 1.0 mA test current per the Vishay datasheet (Document Number: 89116). This range ensures consistent clamping behavior across production lots and validates its suitability for 7.5 V system protection where precise turn-on voltage is critical.
Does SMPC7.5A-M3/87A support automotive qualification?
No, SMPC7.5A-M3/87A is not AEC-Q101 qualified. The AEC-Q101 version requires the HM3 suffix (e.g., SMPC7.5AHM3), which is only offered for SMPC22AN through SMPC85AN variants. SMPC7.5A-M3/87A is industrial-grade, halogen-free, and RoHS-compliant, but lacks automotive qualification documentation and testing.
How is the cathode identified on SMPC7.5A-M3/87A?
The cathode on SMPC7.5A-M3/87A is marked by a band on the package body, aligned with the cathode terminal. Per the datasheet, the SMPC (TO-277A) outline shows the cathode band line oriented toward the single cathode pin, with dual anodes on the opposite side - confirming unidirectional polarity and correct PCB layout orientation.
What is the thermal resistance of SMPC7.5A-M3/87A?
The SMPC7.5A-M3/87A has a typical junction-to-ambient thermal resistance (RθJA) of 85 °C/W when mounted on a standard FR4 PCB with 2 oz. copper and the recommended pad layout. Maximum RθJA is specified as 100 °C/W, supporting thermal design margin for continuous power dissipation up to 1.25 W at 25 °C ambient.
Can SMPC7.5A-M3/87A be used in bidirectional configurations?
No, SMPC7.5A-M3/87A is strictly unidirectional and must be connected with cathode to the protected line and both anodes to ground. Bidirectional operation would require reverse-biased conduction capability, which this device does not provide - using it in reverse risks permanent breakdown or failure during normal operation.
SMPC7.5A-M3/87A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- TransZorb®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 116.3A
- 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)
SMPC7.5A-M3/87A FAQ
1.How can I place an order for SMPC7.5A-M3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC7.5A-M3/87A 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 SMPC7.5A-M3/87A reliable?
The price and inventory of SMPC7.5A-M3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC7.5A-M3/87A is usually 5 days.
3.What payment methods are accepted for SMPC7.5A-M3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC7.5A-M3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC7.5A-M3/87A?
SMPC7.5A-M3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC7.5A-M3/87A 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 SMPC7.5A-M3/87A?
For technical support, including SMPC7.5A-M3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC7.5A-M3/87A requirements.
6.How does Aetrix verify that SMPC7.5A-M3/87A is sourced from the original manufacturer or authorized distributors?
All SMPC7.5A-M3/87A 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 SMPC7.5A-M3/87A meets industry standards.
7.What is the process for return or replacement of SMPC7.5A-M3/87A?
All SMPC7.5A-M3/87A units undergo pre-shipment inspection (PSI). If there is an issue with SMPC7.5A-M3/87A, 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 SMPC7.5A-M3/87A part is unused and in its original packaging.
Return procedure for SMPC7.5A-M3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC7.5A-M3/87A Tags
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