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Vishay General Semiconductor - Diodes Division SMC5K17CA-M3/I
- Part No.:
- SMC5K17CA-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K17CA-M3/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,599
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Product details
Overview
SMC5K17CA-M3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 5000 W peak pulse power (10/1000 μs), 18.9–20.9 V breakdown voltage, and 27.6 V clamping voltage at 181 A. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMC5K17CA-M3/I datasheet, SMC5K17CA-M3/I pinout, SMC5K17CA-M3/I application, or SMC5K17CA-M3/I equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, 175 °C max junction temperature, low incremental surge resistance, and UL 497B safety recognition.
Technical Context
This TVS diode operates as a voltage-clamping device across sensitive nodes, responding within picoseconds to transients induced by inductive switching or lightning surges. Its bidirectional architecture enables symmetric clamping on both polarities without external polarity management.
It delivers 5000 W peak pulse power under 10/1000 μs waveform and sustains 40 kW under 8/20 μs waveform, with thermal resistance of 90 °C/W (junction-to-ambient) and 4.0 °C/W (junction-to-mount), enabling robust thermal performance on standard FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 18.9–20.9 V at 1.0 mA test current - defines precise conduction onset for reliable overvoltage triggering |
| Stand-off Voltage VWM | 17 V - maximum continuous reverse voltage before leakage exceeds 2.0 μA, ensuring no false triggering in normal operation |
| Clamping Voltage VC | 27.6 V at 181 A (10/1000 μs) - limits downstream voltage stress during surge, protecting 3.3 V/5 V/12 V logic and power stages |
| Peak Pulse Power | 5000 W (10/1000 μs) - supports high-energy transient suppression in automotive load-dump and industrial motor-drive environments |
| Junction Temperature Range | –55 to +175 °C - enables deployment in under-hood automotive, industrial control cabinets, and outdoor telecom equipment |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD immunity per JESD22-A114 |
| UL Recognition | UL 497B (E136766) - certifies suitability for primary circuit protection in safety-critical end equipment |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, M3 suffix indicating industrial grade and JESD201 Class 2 whisker resistance. Bidirectional construction has no cathode band; terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically - bidirectional clamping allows placement without orientation constraints on PCB |
| Case (cathode side marking absent) | Thermal and mechanical interface | Exposed metal slug provides low-impedance thermal path to PCB copper; no polarity marking simplifies automated assembly |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity-sensitive layout |
| 40 kW surge capability (8/20 μs) | Meets IEC 61000-4-5 Level 4 requirements for industrial and automotive power line immunity testing |
| 30 kV ESD immunity (IEC 61000-4-2) | Protects downstream analog front-ends and microcontroller I/O against human-body-model discharge events |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak, eliminating bake-out requirements for high-volume SMT production |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, preserving timing margins in high-speed digital interfaces |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protection of 12 V/24 V power rails feeding body control modules and lighting drivers against load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and LDOs to limit input voltage excursion during ISO 7637-2 pulses. Use Value: Clamps to 27.6 V at 181 A, preventing damage to 36 V-rated input stages while maintaining AEC-Q101 compliance. | Use Scenario: Surge suppression on gate drive signal lines connecting microcontrollers to IGBT/MOSFET half-bridges in variable-frequency drives. IC Role / Device Role / Timing Role: Fast-response shunt device absorbing Miller-induced spikes and cross-talk transients during switching transitions. Use Value: Sub-nanosecond response time and low dynamic impedance ensure gate voltage remains within safe SOA during 100 ns–1 μs edge events. |
| Telecom Line Interface | Automotive Sensor Signal Conditioning |
Use Scenario: Protection of RS-485/RS-232 transceivers and Ethernet PHYs connected to external ports exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level protector located after gas discharge tube (GDT) or polymer PTC, handling residual energy and fast-rising edges. Use Value: 27.6 V clamping ensures transceiver I/O stays below absolute maximum ratings even under 8/20 μs 40 kW surges. | Use Scenario: Shielding analog outputs (e.g., 0–5 V throttle position or temperature signals) from ESD and coupled noise in engine control units. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF at 0 V) shunt clamp placed directly at connector entry point before signal conditioning op-amps. Use Value: 30 kV contact-mode ESD immunity and <2.0 μA leakage at 17 V preserve signal integrity and offset accuracy in precision sensor paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CA-E3/52 | Lower peak pulse power (600 W), SMB (DO-214AA) package, same VBR range but higher VC (27.6 V → 29.2 V at 20.5 A) | Suitable for lower-energy consumer electronics; not AEC-Q101 qualified or UL 497B recognized | Select when cost sensitivity outweighs automotive/industrial certification needs and surge energy is ≤600 W |
| 1.5KE18CA | Higher VC (32.4 V at 155 A), axial lead DO-201 package, same 5000 W rating but no MSL Level 1 or AEC-Q101 qualification | Used in legacy through-hole designs; lacks surface-mount compatibility and automotive reliability validation | Choose only for repair or retrofit of existing through-hole boards where rework to SMD is impractical |
Compared with SMBJ17CA-E3/52 and 1.5KE18CA, the SMC5K17CA-M3/I offers superior surge handling per unit area, certified automotive reliability, and zero-orientation SMT placement-making it optimal for new high-density, high-reliability power rail protection designs.
Availability
SMC5K17CA-M3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive control, telecom line interface, and automotive sensor signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for SMC5K17CA-M3/I 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 high-reliability, high-power, and automotive-qualified solutions.
The SMC5KxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, standardized transient suppression in harsh-environment applications including automotive power systems and industrial automation.
FAQ
What is the exact breakdown voltage range for SMC5K17CA-M3/I?
The SMC5K17CA-M3/I has a guaranteed breakdown voltage (VBR) range of 18.9 V to 20.9 V measured at 1.0 mA test current, per Vishay Document Number 87024. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in circuits protecting 12 V or 24 V systems. The SMC5K17CA-M3/I maintains this specification across its full operating temperature range.
Is SMC5K17CA-M3/I compatible with lead-free reflow processes?
Yes, the SMC5K17CA-M3/I is rated for lead-free reflow with a maximum peak temperature of 260 °C per J-STD-020 MSL Level 1, and its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102 solderability standards. The M3 suffix confirms halogen-free, RoHS-compliant construction. No pre-baking is required prior to reflow, supporting high-throughput SMT assembly of the SMC5K17CA-M3/I.
Does SMC5K17CA-M3/I have AEC-Q101 qualification?
Yes, the SMC5K17CA-M3/I is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number 87024, Revision 10-Sep-2024) under Mechanical Data and Ratings sections. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JESD22-A114. The HM3 variant is also AEC-Q101 qualified, but the SMC5K17CA-M3/I itself carries full automotive-grade validation.
What is the clamping voltage of SMC5K17CA-M3/I at its rated peak pulse current?
The SMC5K17CA-M3/I clamps to 27.6 V at its rated peak pulse current of 181 A under the 10/1000 μs waveform, as specified in the Electrical Characteristics table. This value is measured at TA = 25 °C and defines the maximum voltage imposed on protected circuitry during worst-case surge events. The SMC5K17CA-M3/I maintains low dynamic impedance to hold VC stable across varying current levels.
Can SMC5K17CA-M3/I be used in bidirectional signal line protection?
Yes, the SMC5K17CA-M3/I is inherently bidirectional with symmetrical VBR and VC characteristics on both polarities, and features no cathode band marking. This makes it ideal for protecting AC-coupled data lines (e.g., CAN, RS-485), differential sensor outputs, or floating power domains where polarity reversal may occur. Its design eliminates orientation errors during placement of the SMC5K17CA-M3/I on PCBs.
SMC5K17CA-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 181A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K17CA-M3/I FAQ
1.How can I place an order for SMC5K17CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K17CA-M3/I 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 SMC5K17CA-M3/I reliable?
The price and inventory of SMC5K17CA-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K17CA-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K17CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K17CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K17CA-M3/I?
SMC5K17CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K17CA-M3/I 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 SMC5K17CA-M3/I?
For technical support, including SMC5K17CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K17CA-M3/I requirements.
6.How does Aetrix verify that SMC5K17CA-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K17CA-M3/I 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 SMC5K17CA-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K17CA-M3/I?
All SMC5K17CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K17CA-M3/I, 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 SMC5K17CA-M3/I part is unused and in its original packaging.
Return procedure for SMC5K17CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K17CA-M3/I Tags
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