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Vishay General Semiconductor - Diodes Division SMCJ17CAHE3_A/I
- Part No.:
- SMCJ17CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ17CAHE3_A/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,856
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Product details
Overview
SMCJ17CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with a 10/1000 µs waveform, 27.6 V maximum clamping voltage at 54.3 A peak pulse current, and 17 V standoff voltage - deployed in automotive sensor signal lines, industrial I/O protection, and telecom interface circuits.
For engineers reviewing the SMCJ17CAHE3_A/I datasheet, SMCJ17CAHE3_A/I pinout, SMCJ17CAHE3_A/I application, or SMCJ17CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge rating, low thermal resistance (RθJL = 15 °C/W), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a bidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and stable breakdown behavior across temperature. Its symmetrical VBR range (18.9–20.9 V) ensures consistent clamping in both polarities under transient stress.
Designed for high-reliability environments, SMCJ17CAHE3_A/I meets MSL Level 1 per J-STD-020, supports 260 °C lead-free reflow, and is qualified to AEC-Q101 - enabling use in automotive ECUs and industrial controllers where junction temperature must remain ≤150 °C under repeated surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before leakage exceeds 1 μA; defines safe working margin below clamping threshold. |
| VBR min/max | 18.9 V / 20.9 V at 1 mA - Confirmed breakdown onset range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 27.6 V at 54.3 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| RθJL | 15 °C/W - Low junction-to-lead thermal resistance; allows efficient heat transfer to PCB copper pads without external heatsinking. |
| TJ max | 150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and industrial ambient conditions. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical anode/cathode pair; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides low-impedance discharge path for positive- or negative-going transients; connected to protected line or ground reference. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in bidirectional construction; forms symmetrical clamping junction with Anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns - e.g., RS-485, CAN, or sensor differential pairs. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance - required for engine control, ADAS, and body electronics. |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 combination wave surges (1.2/50 µs voltage, 8/20 µs current) up to ±4 kV without degradation. |
| Low RθJL (15 °C/W) | Minimizes thermal derating at elevated ambient temperatures - maintains full 1500 W rating up to TA = 85 °C when mounted on 8 mm × 8 mm copper pads. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting transient excursions to ≤27.6 V, preserving ADC input integrity and preventing latch-up in signal conditioning ICs. Use Value: Eliminates need for separate unidirectional devices on dual-ended sensor outputs; AEC-Q101 compliance ensures 15-year field reliability in harsh under-hood environments. | Use Scenario: Shielding 24 V PLC digital input channels from EFT bursts and surge coupling from adjacent motor drives. IC Role / Device Role / Timing Role: Fast-response voltage clamp absorbing >1000 A surge currents within nanoseconds, maintaining logic-level recognition at the input buffer. Use Value: Enables direct connection to field wiring without external filtering; 1500 W rating sustains repeated 4 kV contact discharge events per IEC 61000-4-4. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY transformer center taps and RJ-45 jack pins against lightning-induced surges in PoE-powered switches. IC Role / Device Role / Timing Role: Symmetrical clamping element referenced to chassis ground, suppressing common-mode transients before they reach magnetics or PHY IC. Use Value: Meets GR-1089-CORE Level 3 surge immunity requirements; DO-214AB footprint allows dense placement near connectors without compromising creepage. | Use Scenario: Secondary-side transient suppression on 12 V DC output rails of wall-mounted AC/DC adapters used in smart home hubs. IC Role / Device Role / Timing Role: Final-stage overvoltage limiter preventing damage to USB-PD controllers and PMICs during output short-circuit recovery or capacitor inrush overshoot. Use Value: RoHS-compliant and halogen-free (HE3 suffix) meets global regulatory mandates; 27.6 V clamping ensures MOSFET gate oxide remains below breakdown threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17CAHE3_A/I | Lower PPPM (400 W), same VWM/VC, SMA package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer ports but not for industrial surge-heavy I/O | Select when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2. |
| SMCJ17CAHM3_A/I | Identical electrical specs and AEC-Q101 qualification; halogen-free molding compound instead of standard RoHS | Required for strict environmental compliance in EU automotive Tier 1 supply chains | Choose when halogen-free certification (per IEC 61249-2-21) is mandated by OEM specification. |
Compared with SMAJ17CAHE3_A/I, SMCJ17CAHE3_A/I delivers 275 % higher surge power handling and superior thermal dissipation for mission-critical interfaces; versus SMCJ17CAHM3_A/I, it offers identical protection performance with standard RoHS compliance - simplifying procurement where halogen-free is not contractually required.
Availability
SMCJ17CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMCJ17CAHE3_A/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMCJ series is engineered specifically for high-energy transient suppression in harsh environments - targeting automotive powertrain, industrial automation, and infrastructure equipment where failure modes must be mitigated without adding system complexity.
FAQ
What is the clamping voltage of SMCJ17CAHE3_A/I at its rated peak pulse current?
The SMCJ17CAHE3_A/I has a maximum clamping voltage (VC) of 27.6 V at its rated peak pulse current (IPPM) of 54.3 A, measured using a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in Vishay's official datasheet revision 09-Jan-2024. The SMCJ17CAHE3_A/I maintains this clamping performance across its full operating temperature range.
Is SMCJ17CAHE3_A/I qualified for automotive applications?
Yes, SMCJ17CAHE3_A/I is AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code. This qualification covers stress tests including temperature cycling, high-temperature operating life, and surge endurance - validating its suitability for automotive powertrain, body electronics, and ADAS subsystems. The SMCJ17CAHE3_A/I meets the reliability requirements for under-hood and cabin-mounted ECUs per ISO/TS 16949-aligned processes.
What package type does SMCJ17CAHE3_A/I use, and what are its mounting requirements?
SMCJ17CAHE3_A/I uses the SMC (DO-214AB) surface-mount package, with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. For optimal thermal performance and full 1500 W rating, it must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. The SMCJ17CAHE3_A/I has no polarity marking due to its bidirectional construction, simplifying PCB layout and assembly verification.
How does the bidirectional design of SMCJ17CAHE3_A/I affect its use in circuit protection?
The bidirectional design of SMCJ17CAHE3_A/I allows it to suppress transients of either polarity symmetrically - making it ideal for protecting AC-coupled signals, differential buses (e.g., CAN, RS-485), or floating references where voltage excursions can swing above and below ground. Unlike unidirectional TVS diodes, the SMCJ17CAHE3_A/I requires no orientation during placement and eliminates risk of incorrect polarity installation, reducing manufacturing error rates in high-volume SMT lines.
What is the maximum junction temperature rating for SMCJ17CAHE3_A/I, and how does it impact thermal design?
The SMCJ17CAHE3_A/I has a maximum junction temperature (TJ) rating of +150 °C, enabling reliable operation in under-hood automotive and industrial control cabinet environments. Its low junction-to-lead thermal resistance (RθJL = 15 °C/W) allows efficient heat conduction into PCB copper, reducing dependence on large thermal pads or external heatsinks. When designing with SMCJ17CAHE3_A/I, thermal derating curves in Figure 2 of the Vishay datasheet must be applied to maintain safe TJ under repetitive surge conditions.
SMCJ17CAHE3_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):
- 54.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ17CAHE3_A/I FAQ
1.How can I place an order for SMCJ17CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ17CAHE3_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 SMCJ17CAHE3_A/I reliable?
The price and inventory of SMCJ17CAHE3_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 SMCJ17CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ17CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ17CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ17CAHE3_A/I?
SMCJ17CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ17CAHE3_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 SMCJ17CAHE3_A/I?
For technical support, including SMCJ17CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ17CAHE3_A/I requirements.
6.How does Aetrix verify that SMCJ17CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ17CAHE3_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 SMCJ17CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ17CAHE3_A/I?
All SMCJ17CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ17CAHE3_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 SMCJ17CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ17CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ17CAHE3_A/I Tags
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