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Vishay General Semiconductor - Diodes Division SMC3K17CAHM3_A/I
- Part No.:
- SMC3K17CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K17CAHM3_A/I.pdf
- Description:
- 3KW, 17V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,394
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Product details
Overview
SMC3K17CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 3000 W peak pulse power (10/1000 μs), 17 V standoff voltage (VWM), and 27.6 V clamping voltage (VC) at 811 A IPPM. It protects automotive sensor signal lines, MOSFET gates, and IC power rails against ISO 7637-2 Pulse 1/2a/3a/3b and ISO 16750-2 Pulse b transients.
For engineers reviewing the SMC3K17CAHM3_A datasheet, SMC3K17CAHM3_A pinout, SMC3K17CAHM3_A application, or SMC3K17CAHM3_A equivalent, this device delivers AEC-Q101 qualification, 30 kV ESD immunity per IEC 61000-4-2, UL 497B recognition, and MSL Level 1 moisture sensitivity - critical for automotive-grade board-level transient suppression in harsh environments.
Technical Context
This TVS diode operates bidirectionally with symmetrical breakdown (VBR min/max = 18.9 V / 20.9 V at 1.0 mA IT), enabling protection of AC-coupled or differential signal paths without polarity concerns. Its low incremental surge resistance and fast response time ensure effective clamping before downstream components experience overvoltage stress.
The device meets stringent automotive transient immunity standards including ISO 7637-2 (Pulse 1, 2a, 3a, 3b) and ISO 16750-2 (Pulse b), with verified clamping performance under 12 V battery system load dump conditions. Thermal design is supported by RthJM = 4.0 °C/W and TJ max = +175 °C rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage; defines safe DC/AC bias limit before conduction begins. |
| VBR (min/max) | 18.9 V / 20.9 V at 1.0 mA - Breakdown threshold range; ensures reliable turn-on during overvoltage events above VWM. |
| VC @ IPPM | 27.6 V at 811 A (10/1000 μs) - Clamped voltage during worst-case surge; limits stress on protected ICs to ≤27.6 V. |
| PPPM | 3000 W (10/1000 μs) - Peak surge energy handling capacity; supports robust protection in automotive and industrial power rails. |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact/air) - Enables direct interface with exposed connectors or buttons without external ESD staging. |
| TJ max | +175 °C - Extended junction temperature rating allows operation in under-hood automotive environments and high-power PCB layouts. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals, MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Reference terminal for bidirectional operation | No polarity marking on bidirectional types; both terminals function identically as anode/cathode depending on transient polarity. |
| Anode (unmarked end) | Reference terminal for bidirectional operation | Identical electrical behavior to cathode; symmetric IV curve enables AC and differential line protection without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN, LIN), and ungrounded sensor outputs without polarity concerns. |
| 30 kW surge capability (8/20 μs) | Supports high-current lightning-induced surges per IEC 61000-4-5; clamps at 37.0 V with 811 A peak current. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units, ADAS sensors, and body electronics modules. |
| UL 497B recognition (E136766) | Confirms safety compliance for telecom and industrial equipment requiring certified transient protection on primary-side interfaces. |
| Low thermal resistance (RthJM = 4.0 °C/W) | Enables efficient heat transfer to PCB copper pour or heatsink, sustaining repeated surge events without thermal runaway. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine bay and chassis modules. IC Role / Device Role / Timing Role: Primary transient shunt element placed directly at connector entry point before signal conditioning amplifier. Use Value: Limits induced transients from load dump or inductive switching to ≤27.6 V, preserving ADC input integrity and preventing latch-up in op-amps. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) backplanes exposed to field wiring noise. IC Role / Device Role / Timing Role: Front-end surge clamp on each isolated input channel, coordinated with optocoupler input stage. Use Value: Absorbs ISO 7637-2 Pulse 1 (−150 V, 2 ms) and Pulse 2a (112 V, 50 μs) without degradation, ensuring >10⁶ cycle reliability. |
| Automotive CAN Bus Protection | Power Supply Rail Clamp |
Use Scenario: Bidirectional protection of CAN_H and CAN_L lines in vehicle infotainment and gateway ECUs. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 200 pF at 0 V) TVS placed across differential pair near connector. Use Value: Clamps ESD and coupled transients to <±35 V while maintaining CAN signal integrity up to 1 Mbps due to symmetric clamping. |
Use Scenario: Secondary overvoltage clamp on 12 V or 24 V main power rail feeding microcontroller and peripheral ICs. IC Role / Device Role / Timing Role: Fast-acting parallel shunt that activates only during surge events exceeding VWM, minimizing standby leakage. Use Value: Prevents brownout or reset caused by load dump spikes up to 120 V (ISO 16750-2 Pulse b), with <2.0 μA ID at 17 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppressor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17CA | Lower PPPM (400 W), SMA package (smaller footprint, higher RthJA = 110 °C/W), same VWM/VBR range. | Not AEC-Q101 qualified; suitable for consumer or industrial non-automotive use only. | Select when board space is constrained and surge energy is limited to <400 W (e.g., USB port protection). |
| SMCJ17CA | Same SMC package and AEC-Q101 qualification, but 1500 W PPPM (half the energy rating of SMC3K17CAHM3_A). | Limited to lower-energy transients (e.g., IEC 61000-4-4 EFT); insufficient for full ISO 7637-2 Pulse 1 compliance. | Choose where cost optimization is prioritized and worst-case surge exposure is below 1500 W. |
Compared with SMAJ17CA and SMCJ17CA, SMC3K17CAHM3_A delivers 2× higher surge energy handling (3000 W vs. 1500 W/400 W), automotive-grade reliability via AEC-Q101, and superior thermal performance (RthJM = 4.0 °C/W), making it the only option qualified for under-hood 12 V system protection per ISO 16750-2.
Availability
SMC3K17CAHM3_A is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecommunications infrastructure requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for SMC3K17CAHM3_A 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-qualified components.
The SMC3KxxCAHM3_A series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for demanding automotive and industrial transient suppression where high peak power, low clamping, and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of SMC3K17CAHM3_A under a 10/1000 μs surge?
The SMC3K17CAHM3_A clamps to 27.6 V at its rated peak pulse current of 811 A under a 10/1000 μs waveform. This value is measured and guaranteed per the Vishay datasheet (Document Number 98241, Rev. 09-Jan-2024), and represents the upper voltage limit imposed on protected circuitry during worst-case transient events.
Is SMC3K17CAHM3_A qualified for automotive applications?
Yes, SMC3K17CAHM3_A is AEC-Q101 qualified, meaning it has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT) required for automotive electronic components. It is explicitly validated for use in engine control, ADAS, and body electronics per ISO 7637-2 and ISO 16750-2 standards.
What does the "HM3_A" suffix indicate in SMC3K17CAHM3_A?
The "HM3_A" suffix denotes Vishay's halogen-free, RoHS-compliant construction with matte tin-plated leads, JESD 201 Class 2 whisker resistance, and MSL Level 1 moisture sensitivity rating (peak reflow temperature 260 °C). It confirms full compliance with automotive and industrial environmental and assembly requirements.
How does SMC3K17CAHM3_A compare to standard SMAJ or SMCJ series TVS diodes?
SMC3K17CAHM3_A provides 3000 W peak pulse power (10/1000 μs), double the 1500 W rating of SMCJ17CA and 7.5× higher than SMAJ17CA (400 W). It also features lower clamping voltage (27.6 V vs. ~33 V for SMCJ17CA at same current) and is AEC-Q101 qualified - attributes not shared by standard SMAJ/SMCJ variants.
What is the reverse leakage current of SMC3K17CAHM3_A at its standoff voltage?
The maximum reverse leakage current (ID) of SMC3K17CAHM3_A is 2.0 μA at its 17 V standoff voltage (VWM), measured at TA = 25 °C. This low leakage ensures minimal power loss in always-on automotive circuits and avoids false triggering in high-impedance sensor interfaces.
SMC3K17CAHM3_A/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):
- 109A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC3K17CAHM3_A/I FAQ
1.How can I place an order for SMC3K17CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K17CAHM3_A/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 SMC3K17CAHM3_A/I reliable?
The price and inventory of SMC3K17CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K17CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMC3K17CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K17CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K17CAHM3_A/I?
SMC3K17CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K17CAHM3_A/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 SMC3K17CAHM3_A/I?
For technical support, including SMC3K17CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K17CAHM3_A/I requirements.
6.How does Aetrix verify that SMC3K17CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMC3K17CAHM3_A/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 SMC3K17CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMC3K17CAHM3_A/I?
All SMC3K17CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K17CAHM3_A/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 SMC3K17CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMC3K17CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K17CAHM3_A/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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