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Vishay General Semiconductor - Diodes Division SMCJ17A-E3/57T
- Part No.:
- SMCJ17A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ17A-E3/57T.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,651
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Product details
Overview
SMCJ17A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR at 1 mA), 27.6 V maximum clamping voltage (VC) at 54.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMCJ17A-E3/57T datasheet, SMCJ17A-E3/57T pinout, SMCJ17A-E3/57T application, or SMCJ17A-E3/57T equivalent, key selection criteria include unidirectional polarity, 1.0 µA max reverse leakage at 17 V, -55 °C to +150 °C operating junction temperature, RoHS-compliant matte tin-plated leads, and compliance with AEC-Q101 when ordered with HE3 suffix.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below its standoff voltage (VWM = 17 V) and rapidly avalanches above its breakdown threshold (VBR = 18.9–20.9 V) to limit transient overvoltages. Its low incremental surge resistance and very fast response time ensure effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
Mounted on 8.0 mm × 8.0 mm copper pads per terminal, it delivers 1500 W peak pulse power handling with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead). The glass passivated chip junction and MSL Level 1 moisture sensitivity rating support robust automated assembly and high-reliability operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 17 V - Maximum continuous reverse working voltage before clamping begins |
| VBR (Breakdown Voltage) | 18.9–20.9 V at 1.0 mA - Confirmed avalanche onset range under standardized test conditions |
| VC (Clamping Voltage) | 27.6 V at 54.3 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge |
| PPPM (Peak Pulse Power) | 1500 W - Surge energy absorption capability for transient events per IEC 61000-4-5 |
| IPPM (Peak Pulse Current) | 54.3 A - Maximum non-repetitive surge current the device safely conducts |
| TJ Range | -55 °C to +150 °C - Full operational junction temperature range without derating |
| Leakage Current (ID) | ≤1.0 µA at 17 V - Minimal power loss and signal interference in standby state |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in reverse-biased protection configuration | Connected to protected line (e.g., VIN, signal trace); clamps to ground when transient exceeds VBR |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping current path during surge event |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts and compatibility with standard SMT reflow profiles |
| Glass passivated junction | Ensures stable electrical characteristics and long-term reliability under thermal cycling |
| Very fast response time | Sub-nanosecond turn-on enables protection against ESD (IEC 61000-4-2) and fast transients |
| MSL Level 1 rating | Allows unlimited floor life and exposure to 260 °C peak reflow without baking preconditioning |
| RoHS-compliant (E3 suffix) | Meets EU Directive 2011/65/EU with matte tin lead finish and halogen-free molding compound |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 35 V, 100 ms) on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground to divert surge energy away from downstream regulators and microcontrollers. Use Value: Limits rail voltage to ≤27.6 V during 54.3 A surge, preventing latch-up or permanent damage to 3.3 V/5 V logic and CAN transceivers. | Use Scenario: Protecting analog front-end inputs of pressure, temperature, or position sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) TVS mounted directly at connector entry point to shunt transients before reaching precision amplifier inputs. Use Value: Maintains signal integrity with ≤1.0 µA leakage at 17 V and clamps ±15 kV contact ESD pulses within nanoseconds. |
| DC-DC Converter Input Protection | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding buck converter input stages from inductive kickback caused by relay or solenoid switching in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V input rail upstream of input filter capacitor and controller IC. Use Value: Absorbs 1500 W transient energy without degradation, enabling reliable operation across 100,000+ surge cycles per JEDEC JESD22-A114. | Use Scenario: Secondary-level surge protection on low-voltage DC bias lines feeding optical transceivers in access network equipment. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary gas discharge tube (GDT) to refine clamping level and handle residual fast-rising edges. Use Value: Provides precise 27.6 V clamping ceiling to prevent overstress of 3.3 V tolerant PHY ICs while supporting 10/1000 µs waveform compliance per GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17A-E3/52T | Same VWM/VBR/VC, but SMB (DO-214AA) package - 30 % smaller footprint, 600 W PPPM | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 Pulse 5a | Select when board space is constrained and surge requirements are ≤600 W |
| SMCJ17CA-E3/57T | Bidirectional variant; identical VWM, VBR, VC, and PPPM, but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur | Choose only if bidirectional protection is mandated by signal architecture |
Compared with SMBJ17A-E3/52T, SMCJ17A-E3/57T provides 2.5× higher surge power handling in a larger but thermally superior SMC package; compared with SMCJ17CA-E3/57T, it offers optimized unidirectional performance with tighter leakage control and avoids unnecessary bidirectional capacitance overhead in DC rail applications.
Availability
SMCJ17A-E3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and DC-DC converter input surge suppression requiring stable component supply, full traceability, and long-term lifecycle continuity.
Supply support for SMCJ17A-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, TVS devices, and optoelectronics with emphasis on reliability, ruggedness, and AEC-Q qualification.
The SMCJ series is engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge immunity and extended temperature operation are mandatory.
FAQ
What is the maximum clamping voltage of SMCJ17A-E3/57T under rated surge conditions?
The SMCJ17A-E3/57T has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated 10/1000 µs peak pulse current of 54.3 A. This value is measured per ANSI/IEEE C62.35 and ensures protected circuits remain below critical overvoltage thresholds during standardized surge events. The SMCJ17A-E3/57T maintains this clamping performance across its full operating temperature range.
Is SMCJ17A-E3/57T suitable for automotive applications requiring AEC-Q101 qualification?
No - SMCJ17A-E3/57T carries the commercial-grade E3 suffix and is not AEC-Q101 qualified. For automotive use, specify SMCJ17AHE3_X (e.g., SMCJ17AHE3_A), which adds AEC-Q101 qualification while retaining identical electrical specs and SMC package. The SMCJ17A-E3/57T remains appropriate for industrial and telecom applications where AEC-Q101 is not mandated.
How does the SMCJ17A-E3/57T differ from bidirectional SMCJ17CA-E3/57T in circuit implementation?
The SMCJ17A-E3/57T is unidirectional and requires correct polarity orientation - cathode connected to the protected line, anode to ground - to function. In contrast, SMCJ17CA-E3/57T is bidirectional and symmetrical, allowing placement without polarity concern but exhibiting slightly higher junction capacitance. The SMCJ17A-E3/57T achieves lower reverse leakage (≤1.0 µA vs. ≤2.0 µA for CA version) in DC applications.
What is the thermal resistance profile of SMCJ17A-E3/57T, and how does it affect PCB layout?
The SMCJ17A-E3/57T has RθJA = 75 °C/W (junction-to-ambient) and RθJL = 15 °C/W (junction-to-lead), measured on 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must replicate this minimum pad area and avoid thermal isolation. The SMCJ17A-E3/57T benefits from direct thermal coupling to internal ground planes via its anode and cathode leads.
Can SMCJ17A-E3/57T be used in parallel to increase surge current handling?
No - SMCJ17A-E3/57T should not be paralleled due to parameter variation (e.g., VBR tolerance ±5 %) causing current imbalance and potential thermal runaway. For higher surge ratings, select a single higher-power device such as SMCJ22A-E3/57T or verify derating per Vishay's parallel application note. The SMCJ17A-E3/57T is characterized and tested as a standalone protection element.
SMCJ17A-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:
- 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:
- DO-214AB (SMCJ)
SMCJ17A-E3/57T FAQ
1.How can I place an order for SMCJ17A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ17A-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 SMCJ17A-E3/57T reliable?
The price and inventory of SMCJ17A-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 SMCJ17A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ17A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ17A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ17A-E3/57T?
SMCJ17A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ17A-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 SMCJ17A-E3/57T?
For technical support, including SMCJ17A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ17A-E3/57T requirements.
6.How does Aetrix verify that SMCJ17A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ17A-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 SMCJ17A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ17A-E3/57T?
All SMCJ17A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ17A-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 SMCJ17A-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ17A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ17A-E3/57T Tags
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