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Vishay General Semiconductor - Diodes Division SMPC17A-M3/86A
- Part No.:
- SMPC17A-M3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC17A-M3/86A.pdf
- Description:
- TVS DIODE 17VWM 27.6VC TO277A
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMPC17A-M3/86A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the eSMP® Series, designed for clamping inductive-switching transients on power and signal lines. It features a 17.0 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR), 27.6 V maximum clamping voltage (VC) at 1.0 A IPPM, and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMPC17A-M3/86A datasheet, SMPC17A-M3/86A pinout, SMPC17A-M3/86A application, or SMPC17A-M3/86A equivalent, key selection criteria include unidirectional polarity, TO-277A (SMPC) package compatibility, 1.25 W steady-state power dissipation, 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 ICs or MOSFETs. Its low incremental surge resistance and fast response time ensure effective suppression of ESD and load-dump events in DC power rails and low-voltage signal paths.
The SMPC17A-M3/86A uses a dual-anode, single-cathode configuration (Anode 1 / Anode 2 / Cathode) in the SMPC (TO-277A) package, enabling symmetrical current sharing across both anodes during surge events - critical for high-reliability automotive and industrial applications where thermal derating above 25 °C must be applied per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.0 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VBR min/max | 18.9 V / 20.9 V at 1.0 mA IT - defines guaranteed avalanche onset range for design margining |
| VC @ IPPM | 27.6 V at 1.0 A - clamping voltage under standardized 10/1000 μs surge, limiting stress on protected circuitry |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 μs waveform, per Fig. 3 |
| PD @ TA=25°C | 1.25 W - steady-state power dissipation limit on FR4 PCB with 2 oz copper, defining thermal layout requirements |
| TJ max | +150 °C - maximum junction temperature, constraining ambient and board-level thermal management |
| Package | SMPC (TO-277A) - 3-terminal surface-mount package with 1.1 mm typical height and J-STD-020 MSL Level 1 rating |
Pinout & Package
SMPC17A-M3/86A is housed in the SMPC (TO-277A) package: a compact, low-profile, halogen-free, RoHS-compliant surface-mount outline conforming to JEDEC TO-277A standards. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H), with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. The cathode band denotes the cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary current entry path during reverse-biased transient | Shares surge current with Anode 2; enables balanced thermal distribution in high-energy clamping |
| Anode 2 | Secondary current entry path during reverse-biased transient | Dual-anode structure reduces effective dynamic resistance and improves clamping consistency |
| Cathode | Common output node tied to system ground or reference rail | Band-marked terminal; connects to protected circuit's return path for low-inductance transient shunting |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm) | Enables use in space-constrained automotive ECUs and portable industrial sensors without height interference |
| Unidirectional polarity | Protects DC-biased lines only - avoids forward conduction during normal operation, minimizing standby leakage |
| Meets MSL Level 1 | Supports lead-free reflow up to 260 °C peak without moisture-induced damage, eliminating bake requirements |
| Low incremental surge resistance | Ensures stable clamping voltage under high di/dt transients, critical for MOSFET gate driver protection |
| AEC-Q101 qualified option | HM3-suffix variants (e.g., SMPC17AHM3) are automotive-qualified; this M3 version is industrial-grade |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Limits voltage seen by downstream op-amps and ADCs to ≤27.6 V during 10/1000 μs surges, preserving signal integrity and preventing latch-up. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced transients from relay coils and motor drives. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, mounted adjacent to terminal block for minimal loop inductance. Use Value: Withstands repeated 1500 W surges while maintaining <1.0 μA leakage at 17 V, ensuring long-term reliability in harsh factory environments. |
| Consumer Power Adapter Output | Telecom DC Power Rail |
Use Scenario: Secondary-side transient suppression on 5–19 V USB PD and laptop adapter outputs exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Final-stage TVS on regulated DC output, positioned after DC-DC converter and before connector. Use Value: Clamps ESD (IEC 61000-4-2) and switching noise to <27.6 V within nanoseconds, preventing damage to connected devices' power management ICs. | Use Scenario: Protection of +48 V telecom power distribution networks feeding remote radio units and baseband processors. IC Role / Device Role / Timing Role: Distributed TVS element on backplane power feeds, coordinated with upstream fuses and MOVs for staged surge handling. Use Value: Delivers 1500 W peak pulse capability with 85 °C/W RθJA, enabling thermal stability in sealed, fanless telecom enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/5A | DO-214AC (SMA) package; 1.5 mm height; 17 V VWM; 27.6 V VC @ 1.0 A; same PPPM | Larger footprint and higher profile limits use in ultra-thin automotive modules | Select when legacy SMA layout exists or cost sensitivity outweighs space constraints |
| SMCJ17A | DO-214AB (SMC) package; 2.3 mm height; 17 V VWM; 27.6 V VC @ 1.0 A; 1500 W PPPM | Higher thermal mass supports higher average surge duty cycles but incompatible with dense SMT layouts | Choose for industrial power supplies requiring enhanced thermal robustness and proven field history |
Compared with SMAJ17A-E3/5A and SMCJ17A, the SMPC17A-M3/86A offers identical electrical clamping performance in a 40% lower profile and 30% smaller footprint - making it optimal for next-generation automotive ADAS sensors and miniaturized industrial edge nodes where board space and Z-height are constrained.
Availability
SMPC17A-M3/86A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power adapter outputs requiring stable component supply, consistent tape-and-reel packaging (1500 pcs per 7" reel), and full traceability.
Supply support for SMPC17A-M3/86A 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 eSMP® Series - including SMPC17A-M3/86A - was engineered for high-density surface-mount transient suppression in automotive, industrial, and computing systems where low profile, AEC-Q101 readiness, and repeatable clamping performance are mandatory.
FAQ
What is the polarity configuration of SMPC17A-M3/86A?
The SMPC17A-M3/86A is a unidirectional TVS diode with a dual-anode, single-cathode configuration (Anode 1 / Anode 2 / Cathode), where the cathode band identifies the cathode terminal. This arrangement allows symmetrical surge current sharing and is intended for DC-biased lines - not AC or bidirectional signal paths. The SMPC17A-M3/86A does not conduct in forward bias during normal operation.
Does SMPC17A-M3/86A meet AEC-Q101 qualification?
No - SMPC17A-M3/86A carries the M3 suffix, indicating halogen-free, RoHS-compliant, industrial-grade construction. AEC-Q101 qualification is available only with the HM3 suffix (e.g., SMPC17AHM3), which applies to SMPC22AN through SMPC85AN variants per the datasheet. The SMPC17A-M3/86A is not AEC-Q101 certified and should not be used in automotive safety-critical applications without additional validation.
What is the maximum clamping voltage for SMPC17A-M3/86A under surge conditions?
The SMPC17A-M3/86A has a maximum clamping voltage (VC) of 27.6 V when subjected to a 10/1000 μs surge current pulse of 1.0 A (IPPM), as specified in the Electrical Characteristics table. This value represents the upper bound of voltage imposed on the protected circuit during transient events and is measured with cathode mounted on heatsink per test condition.
Can SMPC17A-M3/86A be used in place of a bidirectional TVS?
No - SMPC17A-M3/86A is strictly unidirectional and must be oriented with cathode toward the most positive potential in the circuit. It provides no protection against positive-going transients on grounded lines or negative excursions on positive rails. For bidirectional protection, a dedicated bidirectional variant (e.g., SMPC17CA) or back-to-back configuration would be required; SMPC17A-M3/86A cannot substitute without redesign.
What is the thermal resistance of SMPC17A-M3/86A, and how does it affect layout?
The SMPC17A-M3/86A 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. This value requires careful copper pour design around the cathode pad to manage self-heating during repetitive surges; exceeding 1.25 W steady-state dissipation or operating above 25 °C ambient necessitates derating per Figure 2 in the datasheet.
SMPC17A-M3/86A 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 54.3A
- 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)
SMPC17A-M3/86A FAQ
1.How can I place an order for SMPC17A-M3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC17A-M3/86A 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 SMPC17A-M3/86A reliable?
The price and inventory of SMPC17A-M3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC17A-M3/86A is usually 5 days.
3.What payment methods are accepted for SMPC17A-M3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC17A-M3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC17A-M3/86A?
SMPC17A-M3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC17A-M3/86A 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 SMPC17A-M3/86A?
For technical support, including SMPC17A-M3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC17A-M3/86A requirements.
6.How does Aetrix verify that SMPC17A-M3/86A is sourced from the original manufacturer or authorized distributors?
All SMPC17A-M3/86A 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 SMPC17A-M3/86A meets industry standards.
7.What is the process for return or replacement of SMPC17A-M3/86A?
All SMPC17A-M3/86A units undergo pre-shipment inspection (PSI). If there is an issue with SMPC17A-M3/86A, 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 SMPC17A-M3/86A part is unused and in its original packaging.
Return procedure for SMPC17A-M3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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