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Vishay General Semiconductor - Diodes Division SMCJ17CA-E3/57T
- Part No.:
- SMCJ17CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ17CA-E3/57T.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,276
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Product details
Overview
SMCJ17CA-E3/57T 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. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, and clamps to ≤27.6 V at 54.3 A peak pulse current - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMCJ17CA-E3/57T datasheet, SMCJ17CA-E3/57T pinout, SMCJ17CA-E3/57T application, or SMCJ17CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device across bidirectional signal or power rails, responding within picoseconds to transient overvoltages induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, while the SMC package supports high thermal dissipation (RθJA = 75 °C/W).
The device complies with ANSI/IEEE C62.35 for surge suppression and meets UL 497B recognition (QVGQ2). It is rated for -55 °C to +150 °C operating junction temperature and supports AEC-Q101 qualification when ordered with HE3/HM3 suffixes - though SMCJ17CA-E3/57T itself is commercial-grade RoHS-compliant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse working voltage before clamping begins |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - defines reliable conduction onset under transient stress |
| VC @ IPPM | 27.6 V at 54.3 A - clamped voltage during full 1500 W surge, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, critical for automotive load-dump immunity |
| IPPM | 54.3 A - peak surge current capacity, derated above 25 °C per Fig. 2 |
| TJ max | +150 °C - enables operation in under-hood automotive or industrial motor drive environments |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SMCJ17CA-E3/57T uses the SMC (DO-214AB) package: a 2-terminal, non-polarized surface-mount case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no cathode/anode marking; terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient input/output node | Connected across protected line (e.g., CAN_H/CAN_L, power rail, sensor line) - bidirectional conduction path |
| Terminal 2 | Transient input/output node | Completes clamping loop; identical electrical role to Terminal 1 due to symmetrical bidirectional structure |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., RS-485, CAN, USB D+/D-) without polarity concerns |
| 1500 W peak pulse power | Withstands automotive load-dump surges (ISO 7637-2 Pulse 5a) and lightning-induced transients in industrial I/O modules |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in protected MOSFETs or microcontrollers |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without pre-baking, simplifying manufacturing for high-volume SMT lines |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current under thermal cycling and humidity exposure |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against ISO 7637-2 load-dump transients up to 60 V for 400 ms. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between power rail and ground, conducting only during overvoltage events. Use Value: Limits rail voltage to ≤27.6 V during 1500 W surges, preventing damage to 3.3 V/5 V logic and power management ICs downstream. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLC modules from ESD and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential or single-ended sensor outputs (e.g., 4–20 mA, 0–10 V). Use Value: Clamps ±27.6 V transients without polarity biasing, preserving signal integrity and enabling direct connection to ADC inputs. |
| Telecom Line Surge Protection | Consumer Device USB Port Protection |
Use Scenario: Safeguarding Ethernet PHY interfaces or PoE-powered devices against lightning-induced surges on twisted-pair cables. IC Role / Device Role / Timing Role: Common-mode TVS across differential pairs (e.g., ETH_TX+/TX−), absorbing common-mode energy. Use Value: Withstands 10/1000 µs surges up to 1500 W while maintaining <1 µA leakage at 17 V, avoiding signal attenuation. | Use Scenario: Adding robust ESD immunity to USB 2.0 data lines (D+/D−) in portable audio/video equipment. IC Role / Device Role / Timing Role: Bidirectional TVS placed differentially across D+ and D−, clamping ±15 kV HBM ESD events. Use Value: Responds in <1 ns to clamp ESD pulses to <27.6 V, meeting IEC 61000-4-2 Level 4 without degrading 480 Mbps data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC17CA | Same VWM (17 V), lower PPPM (1000 W), smaller SMA package (DO-214AC) | Limited to lower-energy transients; unsuitable for automotive load-dump compliance | Select when board space is constrained and surge requirements are ≤1000 W |
| SMCJ17A-E3/57T | Unidirectional version; same VWM, VBR, and PPPM, but marked cathode band and asymmetric conduction | Requires correct polarity placement; not usable on AC or differential lines without external biasing | Choose only for DC rail protection where polarity is fixed and reverse conduction must be blocked |
Compared with SAC17CA and SMCJ17A-E3/57T, the SMCJ17CA-E3/57T uniquely delivers 1500 W bidirectional clamping in the industry-standard SMC package - making it the preferred choice for automotive, industrial, and telecom applications demanding high-energy, polarity-agnostic surge immunity without layout redesign.
Availability
SMCJ17CA-E3/57T is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom line card prototyping requiring stable component supply and full traceability.
Supply support for SMCJ17CA-E3/57T 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, precision, and high-power handling.
The SMCJ series is engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and communications systems where robustness against load dump, ESD, and lightning surges is mandatory.
FAQ
What is the clamping voltage of SMCJ17CA-E3/57T at its rated peak pulse current?
The SMCJ17CA-E3/57T clamps to a maximum of 27.6 V at its rated peak pulse current of 54.3 A (10/1000 µs waveform). This value is measured under standardized test conditions with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines. The clamping voltage directly determines the maximum stress imposed on downstream components during surge events, making it a critical parameter for system-level overvoltage margin analysis in the SMCJ17CA-E3/57T design.
Is SMCJ17CA-E3/57T suitable for automotive applications requiring AEC-Q101 qualification?
The SMCJ17CA-E3/57T is RoHS-compliant and commercial-grade, but not AEC-Q101 qualified. Vishay offers AEC-Q101 versions under ordering codes like SMCJ17CAHE3_A/H (with HE3 suffix), which undergo additional stress testing for automotive use. For designs targeting production vehicles or Tier-1 suppliers, the SMCJ17CA-E3/57T should be replaced with an HE3- or HM3-suffixed variant - the SMCJ17CA-E3/57T itself is intended for industrial and consumer applications where extended temperature cycling and failure-in-time (FIT) requirements are less stringent.
How does the bidirectional nature of SMCJ17CA-E3/57T affect its PCB layout compared to unidirectional TVS diodes?
The SMCJ17CA-E3/57T has no polarity marking and functions identically in both directions, eliminating orientation constraints during PCB layout and automated placement. Unlike unidirectional variants such as SMCJ17A-E3/57T - which require cathode alignment toward the protected circuit's ground or negative rail - the SMCJ17CA-E3/57T can be placed across any two nodes needing symmetrical overvoltage protection (e.g., differential bus lines, AC-coupled signals). This simplifies routing, reduces assembly errors, and avoids the need for polarity-aware footprint design in the SMCJ17CA-E3/57T implementation.
What is the maximum operating junction temperature for SMCJ17CA-E3/57T, and how does it impact thermal design?
The SMCJ17CA-E3/57T has a maximum junction temperature (TJ) of +150 °C, with thermal resistance RθJA = 75 °C/W under standard JEDEC test conditions (0.31″ × 0.31″ copper pads). To maintain safe operation at full 1500 W surge ratings, designers must ensure adequate copper area, minimize ambient temperature rise, and consider derating curves in Figure 2 of the datasheet. Exceeding TJ max risks parametric shift and premature failure - so thermal management is essential in high-density or sealed enclosures using the SMCJ17CA-E3/57T.
Can SMCJ17CA-E3/57T be used to protect high-speed data lines like USB 2.0 or CAN FD without signal degradation?
Yes - the SMCJ17CA-E3/57T exhibits low junction capacitance (typically <100 pF at zero bias, per Fig. 4 of the datasheet), making it suitable for protecting USB 2.0 (480 Mbps) and CAN FD (up to 5 Mbps) signal lines. Its fast response time (<1 ns) and bidirectional clamping preserve signal symmetry, while its 27.6 V clamping voltage ensures robust ESD immunity (IEC 61000-4-2 Level 4) without forward conduction during normal operation. However, for >1 Gbps interfaces (e.g., USB 3.2 Gen 2), lower-capacitance TVS arrays are recommended - the SMCJ17CA-E3/57T remains optimal for mid-speed industrial and automotive serial buses.
SMCJ17CA-E3/57T 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ17CA-E3/57T FAQ
1.How can I place an order for SMCJ17CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ17CA-E3/57T 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 SMCJ17CA-E3/57T reliable?
The price and inventory of SMCJ17CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ17CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ17CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ17CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ17CA-E3/57T?
SMCJ17CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ17CA-E3/57T 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 SMCJ17CA-E3/57T?
For technical support, including SMCJ17CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ17CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ17CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ17CA-E3/57T 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 SMCJ17CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ17CA-E3/57T?
All SMCJ17CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ17CA-E3/57T, 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 SMCJ17CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ17CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ17CA-E3/57T Tags
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