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Vishay General Semiconductor - Diodes Division SMCJ15HE3/57T
- Part No.:
- SMCJ15HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15HE3/57T.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,131
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Product details
Overview
SMCJ15HE3/57T from Vishay is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, featuring 15 V standoff voltage (VWM), 24.4 V clamping voltage (VC) at 61.5 A peak pulse current, 1500 W peak pulse power rating, and AEC-Q101 qualification for automotive-grade surge protection on power rails and signal lines.
For engineers reviewing the SMCJ15HE3/57T datasheet, SMCJ15HE3/57T pinout, SMCJ15HE3/57T application, or SMCJ15HE3/57T equivalent, this device is selected for robust overvoltage protection in automotive ECUs, industrial power supplies, and sensor interface circuits where high-energy transients must be clamped without degradation under repeated stress.
Technical Context
The SMCJ15HE3/57T operates as a silicon avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to 10/1000 µs waveform transients. It delivers precise bidirectional-capable clamping behavior in unidirectional configuration, with breakdown voltage (VBR) specified at 16.7–18.5 V (IT = 1 mA) and maximum reverse leakage of 1.0 µA at 15 V.
Thermally, it supports operation from –55 °C to +150 °C, with RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W, enabling reliable performance in high-temperature engine bay or industrial control environments without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 12 V nominal systems. |
| VC @ IPPM | 24.4 V - Clamped voltage during 10/1000 µs surge at 61.5 A; ensures downstream ICs (e.g., MCU I/O, CAN transceivers) remain below absolute max ratings. |
| PPPM | 1500 W - Peak pulse power handling capability; sustains ISO 7637-2 Pulse 1/2/5a surges in automotive applications. |
| VBR min/max | 16.7 V / 18.5 V - Breakdown voltage range at 1 mA test current; guarantees consistent turn-on threshold across production lots. |
| ID @ VWM | ≤1.0 µA - Reverse leakage at 15 V; minimizes standby power loss in battery-powered modules. |
| TJ max | +150 °C - Maximum junction temperature; enables placement near heat sources (e.g., power MOSFETs, DC-DC converters) without derating. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode connection point for reverse-biased operation | Connected to protected line (e.g., 12 V rail); band denotes polarity for correct PCB orientation during automated placement. |
| Anode | Cathode return path to ground or lower potential | Typically tied to chassis or system ground; forms low-impedance shunt path during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood use with extended temperature cycling, humidity, and mechanical shock testing per JESD22 standards. |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime, resisting moisture ingress and contamination in harsh environments. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., load dump), improving protection margin for sensitive analog front-ends. |
| MSL Level 1 compliance | Allows unlimited floor life and standard reflow profiles up to 260 °C peak, eliminating bake-out requirements in SMT assembly. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs in engine control units (ECUs) against ISO 7637-2 load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and input filter capacitor, absorbing >1500 W surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to voltage regulators and microcontrollers during cold-crank or alternator field collapse events. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input modules. IC Role / Device Role / Timing Role: Standoff-mode protector on 4–20 mA loop or 0–10 V signal line, activated only during ESD or surge events. Use Value: Maintains signal integrity below 1 µA leakage while clamping transients to ≤24.4 V, preserving ADC accuracy and calibration stability. |
| Telecom DC Power Input Protection | OBD-II Diagnostic Port Protection |
Use Scenario: Securing 48 V DC input of PoE-powered telecom equipment against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on bulk input stage, coordinated with upstream MOVs and downstream polymer PTCs. Use Value: Withstands repetitive 1500 W pulses without parameter drift, extending service life in remote base station deployments. | Use Scenario: Hardening vehicle OBD-II connector pins (pins 4, 5, 16) against ESD and jump-start misconnection events. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor mounted directly at connector footprint, minimizing trace inductance. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <25 V within <1 ns, preventing communication failure in diagnostic tools and telematics modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/57T | Lower PPPM (400 W), smaller DO-214AC (SMA) package, higher RθJA (110 °C/W) | Suitable for space-constrained consumer electronics but insufficient for automotive load dump duty cycle | Select only for cost-sensitive, low-energy applications where 1500 W headroom is not required. |
| SMCJ15AHE3/57T | Identical electrical specs and AEC-Q101 qualification; differs only in marking code (no functional difference) | No application difference - same thermal, mechanical, and reliability performance | Valid alternate if SMCJ15HE3/57T is unavailable; no design or layout changes needed. |
Compared with SMAJ15A-E3/57T, the SMCJ15HE3/57T provides 275 % higher surge power handling and superior thermal dissipation; versus SMCJ15AHE3/57T, it is functionally identical with identical automotive qualification and mounting requirements.
Availability
SMCJ15HE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMCJ15HE3/57T 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, automotive qualification, and high-power handling.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where sustained surge immunity and long-term parameter stability are critical.
FAQ
What is the clamping voltage of the SMCJ15HE3/57T under maximum rated surge current?
The SMCJ15HE3/57T has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 61.5 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected circuitry remains within safe operating limits during standardized surge events. The SMCJ15HE3/57T maintains this clamping performance across its full operating temperature range.
Is the SMCJ15HE3/57T suitable for automotive applications?
Yes, the SMCJ15HE3/57T is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, body electronics, and infotainment systems. Its DO-214AB package, 150 °C maximum junction temperature, and compliance with ISO 7637-2 transient immunity requirements make the SMCJ15HE3/57T appropriate for under-hood and cabin-mounted modules.
How does the HE3 suffix differ from the E3 suffix in SMCJ15HE3/57T?
The HE3 suffix indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 denotes commercial-grade RoHS compliance only. The SMCJ15HE3/57T undergoes additional stress testing (temperature cycling, HAST, mechanical shock) beyond standard JEDEC requirements, making it suitable for mission-critical automotive applications where the SMCJ15E3/57T is not approved.
What is the reverse leakage current of the SMCJ15HE3/57T at its standoff voltage?
The SMCJ15HE3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated standoff voltage (VWM) of 15 V and ambient temperature of 25 °C. This low leakage preserves battery life in always-on automotive modules and avoids loading errors in precision sensor signal chains. The SMCJ15HE3/57T maintains leakage below 5 µA even at 125 °C junction temperature.
Can the SMCJ15HE3/57T be used in bi-directional configurations?
No - the SMCJ15HE3/57T is a unidirectional TVS diode, identifiable by its cathode band marking. For bi-directional operation, Vishay specifies the SMCJ15CA variant (e.g., SMCJ15CAHE3/57T), which lacks polarity marking and provides symmetrical clamping in both directions. Using the SMCJ15HE3/57T in reverse-biased mode risks permanent breakdown and failure.
SMCJ15HE3/57T 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 55.8A
- 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)
SMCJ15HE3/57T FAQ
1.How can I place an order for SMCJ15HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15HE3/57T 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 SMCJ15HE3/57T reliable?
The price and inventory of SMCJ15HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15HE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ15HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15HE3/57T?
SMCJ15HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15HE3/57T 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 SMCJ15HE3/57T?
For technical support, including SMCJ15HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15HE3/57T requirements.
6.How does Aetrix verify that SMCJ15HE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ15HE3/57T 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 SMCJ15HE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ15HE3/57T?
All SMCJ15HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15HE3/57T, 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 SMCJ15HE3/57T part is unused and in its original packaging.
Return procedure for SMCJ15HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15HE3/57T Tags
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