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Vishay General Semiconductor - Diodes Division SMCJ17-E3/57T
- Part No.:
- SMCJ17-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ17-E3/57T.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,764
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Product details
Overview
SMCJ17-E3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR at 1 mA), 27.6 V clamping voltage (VC) at 54.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ17-E3/57T datasheet, SMCJ17-E3/57T pinout, SMCJ17-E3/57T application, or SMCJ17-E3/57T equivalent, this page delivers verified electrical parameters, JEDEC-compliant thermal performance, AEC-Q101 qualification status, RoHS compliance, and real-world design context for ESD/surge protection in 12 V and 24 V systems.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 17 V (VWM) and transitions to low-impedance conduction above its 18.9–20.9 V breakdown threshold (VBR), limiting transient energy to ≤27.6 V at 54.3 A. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns).
Thermally, it sustains 150 °C maximum junction temperature with RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W, enabling reliable operation under repetitive surge stress in compact PCB layouts. The E3 suffix confirms JESD201 Class 1A whisker resistance and RoHS compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin for 12 V nominal systems. |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - Verified breakdown range ensuring predictable turn-on across production lot and temperature; critical for timing-critical protection windows. |
| VC @ IPPM | 27.6 V at 54.3 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs like microcontrollers or CAN transceivers. |
| PPPM | 1500 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge testing without degradation. |
| IPPM | 54.3 A - Peak surge current capability with 10/1000 µs waveform; directly correlates to protected line impedance and source energy. |
| TJ max | +150 °C - Maximum junction temperature rating; enables use in under-hood automotive environments and sealed industrial enclosures. |
| Leakage (ID) | ≤1.0 µA at VWM - Ultra-low reverse leakage preserves battery life in always-on circuits and avoids false triggering in high-impedance sensor interfaces. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Polarity marked by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; forms return path during clamping; requires low-inductance layout to minimize overshoot. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 12 V supply or CAN_H); band-marked end; carries full surge current during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for engine control, ADAS, and body electronics. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage over 15+ year field life; eliminates moisture-induced parameter drift in humid environments. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning; eliminates assembly yield loss and delamination risk. |
| 1500 W peak pulse power | Supports single-event surge immunity up to IEC 61000-4-5 4 kV (2 Ω source) - sufficient for 24 V truck battery systems and industrial PLC backplanes. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt events; maintains tight clamping window even with fast-rising transients from relay coil switching. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient clamp placed between battery rail and local regulator input; responds within <1 ns to limit voltage excursion to ≤27.6 V. Use Value: Prevents latch-up or permanent damage to downstream 3.3 V/5 V LDOs and microcontrollers during 120 V/50 ms load dump events. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop drivers) in factory automation sensors exposed to ESD and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (though SMCJ17-E3/57T is unidirectional, used on supply side) placed at sensor PCB edge to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity by clamping transients before they reach precision DACs or op-amps, avoiding calibration drift or output saturation. |
| Telecom DC Power Input Protection | Motor Drive Gate Driver Protection |
|
Use Scenario: Securing -48 V DC telecom power inputs against lightning-induced surges and hot-swap transients in base station power modules. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground on negative rail; clamps positive-going transients to protect upstream DC/DC converters. Use Value: Enables compliance with GR-1089-CORE Level 3 surge immunity (2 kV differential mode) without derating or parallel staging. |
Use Scenario: Shielding high-side gate drivers (e.g., driving IGBTs in HVAC inverters) from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Localized clamp across gate-source terminals or bootstrap supply rail; suppresses dv/dt-induced false turn-on and gate oxide overstress. Use Value: Extends gate driver IC lifetime by limiting transient overvoltage to <30 V, well below typical 35 V absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/57T | Lower PPPM (400 W vs. 1500 W); same VWM/VBR; DO-214AC (SMA) package with smaller pad area and higher RθJA. | Not suitable for IEC 61000-4-5 Level 4; limited to low-energy ESD-only scenarios (e.g., USB ports) or space-constrained consumer PCBs. | Select only when surge energy is <10 J and board area is severely constrained; verify thermal derating at 85 °C ambient. |
| SMCJ17AHE3/57T | Identical electrical specs and package; differs only in AEC-Q101 qualification (HE3 suffix denotes automotive grade; E3 is commercial grade). | Required for automotive OEM designs requiring PPAP documentation and extended temperature validation (-40 °C to +125 °C). | Choose SMCJ17AHE3/57T for Tier 1 automotive programs; SMCJ17-E3/57T remains valid for industrial and telecom applications where AEC-Q101 is not mandated. |
Compared with SMAJ17A-E3/57T and SMCJ17AHE3/57T, the SMCJ17-E3/57T delivers 3.75× higher surge power handling than SMAJ17A while maintaining identical voltage thresholds, and offers commercial-grade reliability at lower cost than the AEC-Q101-qualified HE3 variant - making it optimal for non-automotive 12 V/24 V systems requiring proven 1500 W immunity.
Availability
SMCJ17-E3/57T is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial PLC I/O modules, and telecom DC-DC converter inputs requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for SMCJ17-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, thermal performance, and automotive qualification.
The SMCJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge immunity, AEC-Q101 compliance, and low-leakage stability are mandatory.
FAQ
What is the clamping voltage of SMCJ17-E3/57T at its rated peak pulse current?
The SMCJ17-E3/57T has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current (IPPM) of 54.3 A using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 27.6 V during a full-power surge event. The SMCJ17-E3/57T achieves this clamping performance while maintaining low incremental resistance, making it suitable for protecting 3.3 V and 5 V logic interfaces fed from 12 V rails.
Is SMCJ17-E3/57T suitable for automotive applications?
The SMCJ17-E3/57T is RoHS-compliant and manufactured in a process meeting JESD201 Class 1A whisker resistance, but it carries the commercial-grade E3 suffix - not the HE3 suffix denoting AEC-Q101 qualification. Therefore, while the SMCJ17-E3/57T shares identical electrical and thermal specs with the AEC-Q101-qualified SMCJ17AHE3/57T, it is not certified for automotive use per OEM requirements. For production automotive designs, specify SMCJ17AHE3/57T; the SMCJ17-E3/57T remains appropriate for industrial and telecom applications.
What does the "-E3/57T" suffix mean in SMCJ17-E3/57T?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with JESD201 Class 1A whisker resistance, while "57T" specifies packaging in 7-inch diameter plastic tape-and-reel format with 850 units per reel. This ordering code aligns with Vishay's standard delivery mode for surface-mount components and ensures compatibility with automated pick-and-place equipment. The SMCJ17-E3/57T uses matte tin-plated leads solderable per J-STD-002, and its DO-214AB (SMCJ) package meets UL 94 V-0 flammability rating.
How does SMCJ17-E3/57T compare to bi-directional variants like SMCJ17CA?
The SMCJ17-E3/57T is unidirectional, meaning it conducts only in reverse bias above VBR, with polarity indicated by a cathode band. In contrast, SMCJ17CA is bi-directional and symmetrical - suitable for AC lines or data lines where transients may swing both polarities. The SMCJ17-E3/57T offers identical VWM (17 V), VBR, and VC specs as its bi-directional counterpart but cannot protect against negative-going transients on grounded lines. Use SMCJ17-E3/57T on DC supply rails; choose SMCJ17CA for RS-485 or Ethernet PHY protection.
What is the maximum operating temperature for SMCJ17-E3/57T?
The SMCJ17-E3/57T has a specified operating junction temperature range of -55 °C to +150 °C, with thermal resistance values of RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W. At 85 °C ambient, its 6.5 W steady-state power dissipation allows continuous operation without derating. The SMCJ17-E3/57T maintains full 1500 W surge capability up to TJ = 125 °C, supported by Vishay's derating curve in Figure 2 of document 88394 - confirming suitability for under-hood and enclosed industrial environments.
SMCJ17-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 49.2A
- 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)
SMCJ17-E3/57T FAQ
1.How can I place an order for SMCJ17-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ17-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 SMCJ17-E3/57T reliable?
The price and inventory of SMCJ17-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 SMCJ17-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ17-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ17-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ17-E3/57T?
SMCJ17-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ17-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 SMCJ17-E3/57T?
For technical support, including SMCJ17-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ17-E3/57T requirements.
6.How does Aetrix verify that SMCJ17-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ17-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 SMCJ17-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ17-E3/57T?
All SMCJ17-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ17-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 SMCJ17-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ17-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ17-E3/57T Tags
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