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Vishay General Semiconductor - Diodes Division SMPC7.0A-M3/87A
- Part No.:
- SMPC7.0A-M3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC7.0A-M3/87A.pdf
- Description:
- TVS DIODE 7VWM 12VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:5,238
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Product details
Overview
SMPC7.0A-M3/87A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the eSMP® Series, designed for clamping inductive-switching transients on signal and power lines. It features a 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage (VC) at 200 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with a 10/1000 μs waveform - ideal for protecting MOSFETs and sensor ICs in automotive and industrial control modules.
For engineers reviewing the SMPC7.0A-M3/87A datasheet, SMPC7.0A-M3/87A pinout, SMPC7.0A-M3/87A application, or SMPC7.0A-M3/87A equivalent, key selection criteria include unidirectional polarity, TO-277A (SMPC) package compatibility, 1.1 mm profile for space-constrained PCBs, thermal resistance (RθJA ≤ 100 °C/W), and AEC-Q101 qualification eligibility via HM3 suffix variants.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging avalanche breakdown to limit transient overvoltages before they reach downstream circuitry. Its low incremental surge resistance and fast response time ensure effective suppression of ESD and load-dump events without affecting normal signal integrity.
The SMPC7.0A-M3/87A is rated for junction temperatures from –55 °C to +150 °C and mounted on FR4 PCB with 2 oz. copper; its thermal performance is characterized by RθJA ≤ 100 °C/W and RθJM ≤ 3.0 °C/W, enabling reliable operation under sustained surge conditions when heatsinked appropriately.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 7.78 V / 8.60 V at 10 mA - ensures consistent avalanche initiation across production lots |
| VC @ IPPM | 12.0 V at 200 A - limits worst-case transient voltage seen by protected ICs |
| PPPM | 1500 W (10/1000 μs) - supports high-energy transients common in automotive power electronics |
| TJ max | +150 °C - enables use in under-hood and industrial environments with elevated ambient temps |
| Package | SMPC (TO-277A) - 3-terminal surface-mount package with cathode band marking and 1.1 mm height |
| MSL Level | Level 1 per J-STD-020 - allows standard reflow without moisture sensitivity concerns |
Pinout & Package
SMPC7.0A-M3/87A uses the SMPC (TO-277A) package: a 3-terminal surface-mount case with anode-anode-cathode configuration. The cathode is marked by a band on the body; terminals are matte tin-plated for solderability per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary anode connection | Connected to protected line; forms one side of the avalanche junction |
| Anode 2 | Secondary anode connection | Electrically tied to Anode 1 internally; provides mechanical stability and thermal path |
| Cathode | Clamping output terminal | Connected to ground or low-impedance return; carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm) | Enables placement beneath connectors or in ultra-thin modules without height interference |
| Unidirectional polarity | Protects DC-biased lines (e.g., 5 V/12 V rails) while blocking reverse conduction during normal operation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (< 1 ns rise time) |
| AEC-Q101 qualified option (HM3) | Supports automotive-grade reliability requirements including temperature cycling and HTRB testing |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance mandates for industrial and consumer end equipment |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs to body control modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed upstream of LDO regulators and microcontrollers. Use Value: Limits transient voltage to ≤12.0 V during 200 A surges, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Signal-line TVS connected between sensor output and MCU ADC input with grounded cathode. Use Value: Clamps ±15 kV contact ESD per IEC 61000-4-2 while maintaining <1 μA leakage at 7.0 V, preserving measurement accuracy. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier outputs from switching transients and lightning-induced surges. IC Role / Device Role / Timing Role: High-power unidirectional TVS placed across bulk capacitor input rails. Use Value: Absorbs 1500 W peak pulse energy without degradation, extending adapter lifetime in unstable grid environments. | Use Scenario: Front-end protection for Ethernet PHY interfaces exposed to induced surges on long cable runs. IC Role / Device Role / Timing Role: Rail-to-rail clamping device on differential pair lines with shared cathode grounding. Use Value: Maintains signal integrity up to 100 MHz due to low junction capacitance (<100 pF at 0 V), verified per Fig. 3 in datasheet. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/5A | DO-214AC (SMA) package; 1.8 mm height; 1000 W PPPM; 12.5 V VC @ 190 A | Lower power rating and taller profile - suitable only where board height >1.8 mm and surge energy ≤1000 W | Select SMAJ7.0A-E3/5A only if footprint constraints allow larger outline and thermal mass is sufficient for lower PPPM. |
| SMCJ7.0AHE3/57T | DO-214AB (SMC) package; 2.3 mm height; 1500 W PPPM; 12.0 V VC @ 200 A; AEC-Q101 qualified | Same clamping performance but larger footprint and higher thermal mass - better for sustained surge duty cycles | Choose SMCJ7.0AHE3/57T when AEC-Q101 certification is mandatory and PCB layout permits 7.11 × 6.22 mm area. |
Compared with SMPC7.0A-M3/87A, SMAJ7.0A-E3/5A offers reduced board space but sacrifices 33 % peak power handling and adds 0.7 mm height; SMCJ7.0AHE3/57T matches PPPM and VC but requires 2.5× more PCB area and targets certified automotive use cases.
Availability
SMPC7.0A-M3/87A is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and telecom line card surge protection requiring stable component supply and traceable sourcing.
Supply support for SMPC7.0A-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 is part of Vishay's eSMP® TransZorb® family, engineered for high-power transient suppression in space-constrained, high-reliability applications such as automotive ECUs and industrial PLCs.
FAQ
What is the clamping voltage of SMPC7.0A-M3/87A at its rated peak pulse current?
The SMPC7.0A-M3/87A has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current (IPPM) of 200 A using a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 89116 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMPC7.0A-M3/87A maintains this clamping performance across its specified operating temperature range.
Is SMPC7.0A-M3/87A suitable for automotive applications requiring AEC-Q101 qualification?
No - SMPC7.0A-M3/87A carries the M3 industrial-grade suffix and is not AEC-Q101 qualified. For automotive use, select the HM3-suffixed variant (e.g., SMPC7.0AHM3/87A), which is explicitly listed in the datasheet as AEC-Q101 qualified and available for SMPC22AN through SMPC85AN. The SMPC7.0A-M3/87A remains appropriate for industrial and consumer applications where AEC-Q101 is not mandated.
What does the /87A package code indicate for SMPC7.0A-M3/87A?
Per Vishay's ordering information table, the /87A suffix denotes a 13-inch diameter plastic tape-and-reel packaging format containing 6500 units per reel. This contrasts with /86A, which specifies a 7-inch reel holding 1500 units. Both /86A and /87A are valid for SMPC5.0A-M3 through SMPC36A-M3, and the /87A code does not affect electrical or thermal specifications of the SMPC7.0A-M3/87A device itself.
How does the SMPC7.0A-M3/87A differ from bidirectional TVS diodes?
The SMPC7.0A-M3/87A is unidirectional and functions only under reverse-bias surge conditions - it blocks forward current beyond its VWM and clamps only when voltage exceeds VBR in the reverse direction. Bidirectional TVS diodes (e.g., SMBJ7.0CA) clamp in both polarities and are used on AC or floating lines. The SMPC7.0A-M3/87A is optimized for DC rails where polarity is fixed and forward conduction must be avoided.
What is the thermal resistance junction-to-ambient for SMPC7.0A-M3/87A?
The SMPC7.0A-M3/87A has a maximum thermal resistance junction-to-ambient (RθJA) of 100 °C/W when mounted on a standard FR4 PCB with 2 oz. copper and the recommended pad layout. This value is defined per JEDEC 51-2A and appears in the Thermal Characteristics table of datasheet 89116. Actual RθJA may improve with enhanced copper pour or heatsinking, but design margins should assume the 100 °C/W worst-case for thermal safety analysis of the SMPC7.0A-M3/87A.
SMPC7.0A-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 125A
- 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)
SMPC7.0A-M3/87A FAQ
1.How can I place an order for SMPC7.0A-M3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC7.0A-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 SMPC7.0A-M3/87A reliable?
The price and inventory of SMPC7.0A-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 SMPC7.0A-M3/87A is usually 5 days.
3.What payment methods are accepted for SMPC7.0A-M3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC7.0A-M3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC7.0A-M3/87A?
SMPC7.0A-M3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC7.0A-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 SMPC7.0A-M3/87A?
For technical support, including SMPC7.0A-M3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC7.0A-M3/87A requirements.
6.How does Aetrix verify that SMPC7.0A-M3/87A is sourced from the original manufacturer or authorized distributors?
All SMPC7.0A-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 SMPC7.0A-M3/87A meets industry standards.
7.What is the process for return or replacement of SMPC7.0A-M3/87A?
All SMPC7.0A-M3/87A units undergo pre-shipment inspection (PSI). If there is an issue with SMPC7.0A-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 SMPC7.0A-M3/87A part is unused and in its original packaging.
Return procedure for SMPC7.0A-M3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC7.0A-M3/87A Tags
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