My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMPC17A-M3/87A
- Part No.:
- SMPC17A-M3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC17A-M3/87A.pdf
- Description:
- TVS DIODE 17VWM 27.6VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:9,878
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMPC17A-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 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, 1500 W peak pulse power (PPPM), and operates from –55 °C to +150 °C.
For engineers reviewing the SMPC17A-M3/87A datasheet, SMPC17A-M3/87A pinout, SMPC17A-M3/87A application, or SMPC17A-M3/87A equivalent, key selection criteria include unidirectional polarity, low-profile 1.1 mm height, MSL Level 1 reflow compatibility, halogen-free RoHS-compliant construction, and suitability for automotive-grade designs when specified with HM3 suffix.
Technical Context
This TVS diode uses a silicon avalanche junction structure optimized for fast response (<1 ns) to transient overvoltages and low incremental surge resistance to minimize clamping overshoot. Its dual-anode configuration (SMPCxxA series) places both anodes on the same side of the package, enabling compact PCB layout with single-point grounding of the cathode terminal.
The device is rated for 1500 W peak pulse power under 10/1000 μs waveform conditions and exhibits 1.25 W steady-state power dissipation at 25 °C ambient on FR4 with 2 oz copper. Thermal resistance junction-to-ambient is 85–100 °C/W, supporting reliable operation in thermally constrained industrial and automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin below breakdown. |
| VBR min/max | 18.9 V / 20.9 V - Breakdown occurs within this range at 1.0 mA test current; ensures consistent turn-on across production lots. |
| VC @ IPPM | 27.6 V - Clamped voltage at 1.0 A peak pulse current; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 1500 W - Peak pulse power handling capability under 10/1000 μs waveform; enables robust protection against IEC 61000-4-5 surges. |
| TJ max | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and high-temperature industrial enclosures. |
| Package | SMPC (TO-277A) - Surface-mount, 3-terminal, low-profile (1.1 mm typical height) package with matte tin-plated leads compliant to J-STD-002. |
Pinout & Package
SMPC17A-M3/87A uses the SMPC (TO-277A) package: a 3-terminal, unidirectional surface-mount device with dual anodes on one side and a shared cathode on the opposite side. The cathode is marked by a band on the top surface. Mounting pad layout follows JEDEC TO-277A standard dimensions (4.80 × 3.70 mm body, 6.80 mm overall pad length).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary current entry path during reverse-biased clamping | Electrically tied to Anode 2 internally; used together to distribute surge current and reduce thermal stress. |
| Anode 2 | Secondary current entry path during reverse-biased clamping | Parallel anode structure lowers effective dynamic resistance and improves clamping consistency under high di/dt events. |
| Cathode (K) | Common surge current return node | Single cathode terminal simplifies PCB routing and grounding; band marking identifies polarity for correct orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm typical height) | Enables use in ultra-thin consumer electronics and space-constrained automotive modules without compromising board stacking height. |
| Unidirectional polarity | Protects DC power rails and unidirectional signal paths (e.g., CAN, LIN, sensor outputs) while avoiding forward conduction during normal operation. |
| Meets MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture-related delamination or popcorn failure. |
| Halogen-free, RoHS-compliant, industrial grade | Fulfills environmental compliance requirements for global industrial and commercial equipment without requiring special handling or exemptions. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving protection margin for sensitive ICs. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and inductive switching transients in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional TVS placed at power input stage to clamp surges up to 1500 W before they reach LDOs, microcontrollers, or CAN transceivers. Use Value: Prevents latch-up or permanent damage to downstream components during ISO 16750-2 load-dump events (up to 35 V, 100 ms) and ISO 7637-2 pulses. |
Use Scenario: Shielding analog and digital output lines of pressure, temperature, and position sensors in factory automation systems. IC Role / Device Role / Timing Role: Fast-response clamping element on sensor signal traces to suppress ESD (IEC 61000-4-2) and cable-coupled noise (IEC 61000-4-4/5). Use Value: Maintains signal integrity and prevents false triggering or data corruption in 4–20 mA, 0–10 V, or digital IO interfaces exposed to noisy plant-floor environments. |
| Telecom Power Supply Input | Consumer Device USB/DC Jack Protection |
|
Use Scenario: Safeguarding AC/DC adapter inputs and PoE-powered switch ports against lightning-induced surges and AC line faults. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC bus (e.g., 48 V PoE) to absorb energy before it reaches DC-DC converters and PHY ICs. Use Value: Withstands repeated 10/1000 μs surges up to 1500 W while maintaining <1 μA leakage at 17 V, ensuring no standby power penalty. |
Use Scenario: Hardening USB-C and barrel-jack inputs of portable speakers, smart home hubs, and wearables against accidental 24 V adapter misconnection and ESD. IC Role / Device Role / Timing Role: Standoff-rated clamping device placed directly at connector to shunt overvoltage before reaching charging ICs or system PMICs. Use Value: 17.0 V VWM provides safe margin above 5–20 V USB PD profiles while clamping to 27.6 V-well below typical IC absolute maximum ratings (30–36 V). |
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 (Vishay) | Same VWM (17 V) and PPPM (400 W), but SMA package (higher RθJA ≈ 140 °C/W); lower peak power rating. | Less suitable for high-energy surges (e.g., automotive load dump); better for cost-sensitive, lower-power consumer designs. | Select SMAJ17A-E3/5A only if surge energy is ≤400 W and board space allows larger SMA footprint. |
| SMCJ17A (Littelfuse) | Identical VWM (17 V), VC (27.6 V), and PPPM (1500 W); same SMPC (TO-277A) package and pinout. | Direct functional replacement with identical electrical and mechanical behavior; qualified to AEC-Q101 in AN variant. | SMCJ17A offers equivalent protection performance and drop-in compatibility where Vishay sourcing is constrained. |
Compared with SMPC17A-M3/87A, SMAJ17A-E3/5A delivers lower surge robustness in a larger package, while SMCJ17A matches all key ratings and physical interface-making it a true alternative for high-reliability 1500 W transient suppression where second-source assurance is required.
Availability
SMPC17A-M3/87A is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor interfaces, telecom power supply inputs, and consumer USB/DC jack protection requiring stable component supply and full traceability.
Supply support for SMPC17A-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMPC series targets high-energy transient suppression in space-constrained, thermally demanding environments-designed specifically for automotive, industrial, and telecom applications needing low-profile, high-power TVS solutions.
FAQ
What is the polarity configuration of SMPC17A-M3/87A?
SMPC17A-M3/87A is a unidirectional TVS diode with dual-anode/single-cathode configuration. The cathode is marked by a band on the top surface. During reverse-bias transient events, current flows from both anodes into the shared cathode. This architecture reduces dynamic resistance and improves clamping consistency compared to single-anode devices.
Does SMPC17A-M3/87A meet automotive qualification standards?
SMPC17A-M3/87A is industrial-grade and RoHS-compliant but not AEC-Q101 qualified. For automotive applications requiring AEC-Q101, Vishay offers the SMPC17AN-M3/H variant (with HM3 suffix). SMPC17A-M3/87A remains suitable for non-safety-critical automotive subsystems where industrial-grade reliability is acceptable, such as infotainment power rails or body control module peripherals.
What is the meaning of the /87A suffix in SMPC17A-M3/87A?
The /87A suffix denotes the packaging format: 13-inch diameter plastic tape and reel, with a base quantity of 6500 units per reel. This contrasts with /86A, which indicates a 7-inch reel containing 1500 units. Both /86A and /87A are compatible with standard SMT pick-and-place equipment and meet JEDEC moisture sensitivity level (MSL) 1 requirements.
How does SMPC17A-M3/87A compare to bidirectional TVS diodes?
SMPC17A-M3/87A is unidirectional and intended for DC circuits where polarity is fixed-such as 12 V power rails or unidirectional signal lines. Unlike bidirectional TVS diodes, it does not conduct in forward bias, eliminating risk of unintended current flow during normal operation. Its clamping performance is optimized for reverse-transient suppression only, offering tighter VBR tolerance and lower leakage than equivalent bidirectional parts.
What is the thermal resistance of SMPC17A-M3/87A under standard mounting conditions?
SMPC17A-M3/87A has a typical junction-to-ambient thermal resistance (RθJA) of 85 °C/W and a maximum of 100 °C/W when mounted on FR4 PCB with 2 oz copper and standard footprint per JEDEC 51-2A. Its junction-to-mount thermal resistance (RθJM) is 2.5–3.0 °C/W, confirming efficient heat transfer to the PCB ground plane-critical for sustained surge duty cycles in industrial power supplies.
SMPC17A-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):
- 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-M3/87A FAQ
1.How can I place an order for SMPC17A-M3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC17A-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 SMPC17A-M3/87A reliable?
The price and inventory of SMPC17A-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 SMPC17A-M3/87A is usually 5 days.
3.What payment methods are accepted for SMPC17A-M3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC17A-M3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC17A-M3/87A?
SMPC17A-M3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC17A-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 SMPC17A-M3/87A?
For technical support, including SMPC17A-M3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC17A-M3/87A requirements.
6.How does Aetrix verify that SMPC17A-M3/87A is sourced from the original manufacturer or authorized distributors?
All SMPC17A-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 SMPC17A-M3/87A meets industry standards.
7.What is the process for return or replacement of SMPC17A-M3/87A?
All SMPC17A-M3/87A units undergo pre-shipment inspection (PSI). If there is an issue with SMPC17A-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 SMPC17A-M3/87A part is unused and in its original packaging.
Return procedure for SMPC17A-M3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC17A-M3/87A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
