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Vishay General Semiconductor - Diodes Division SMCJ7.5CHE3/57T
- Part No.:
- SMCJ7.5CHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5CHE3/57T.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,371
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Product details
Overview
SMCJ7.5CHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA, 12.9 V clamping voltage (VC) at 116.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - suitable for automotive power supply input protection against load dump and ISO 7637-2 transients.
For engineers reviewing the SMCJ7.5CHE3/57T datasheet, SMCJ7.5CHE3/57T pinout, SMCJ7.5CHE3/57T application, or SMCJ7.5CHE3/57T equivalent, this device is evaluated for AEC-Q101 qualification, RoHS compliance, and high-reliability placement in automotive ECUs, industrial PLC I/O modules, and DC-DC converter front-end protection where stable clamping performance and low leakage (<100 µA at VWM) are critical.
Technical Context
The SMCJ7.5CHE3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response to transient events. Its unidirectional polarity enables integration into DC-biased circuits where reverse conduction must be blocked, and its low incremental surge resistance ensures minimal voltage overshoot during high-current surges up to 116.3 A.
Thermally, it supports operation from –55 °C to +150 °C junction temperature, with RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, making it suitable for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected line. |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 12.9 V at 116.3 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 1500 W - Peak pulse power handling capacity; supports high-energy transients like ISO 7637-2 Pulse 5a. |
| ID @ VWM | ≤100 µA - Low reverse leakage at rated stand-off; minimizes quiescent power loss in battery-powered systems. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in high-ambient under-hood or industrial enclosures. |
| Package | DO-214AB (SMCJ) - Surface-mount, low-profile package with matte tin-plated leads; compatible with automated reflow per J-STD-020 MSL Level 1. |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with J-bend leads, 0.320" (8.13 mm) body length, 0.220–0.246" (5.59–6.22 mm) width, cathode band marking on one end. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential node in unidirectional configuration; carries surge current during clamping. |
| Cathode (banded end) | Reverse-blocking terminal | Connected to protected line (e.g., +12 V rail); blocks normal operation current but avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for ECU and ADAS module deployment. |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime; resists moisture ingress and surface contamination in harsh environments. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt; critical for protecting fast-switching MOSFETs and gate drivers from voltage overshoot. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without pre-baking; reduces manufacturing complexity and cost in high-volume SMT lines. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability - satisfies Tier-1 automotive and industrial safety audits. |
Applications
| Automotive Power Input Protection | Industrial DC-DC Converter Input |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power rails in engine control units against load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping transients within 1 ns to limit voltage to ≤12.9 V. Use Value: Prevents latch-up or permanent damage to 15 V-rated LDOs and MCU VDD pins during 100 V/400 ms surges. |
Use Scenario: Safeguarding isolated DC-DC converter primary-side input against switching noise and inductive kickback from relay coils. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 50–100 A spikes without degradation, mounted directly at converter input terminals. Use Value: Extends converter lifetime by eliminating cumulative junction stress from sub-millisecond transients exceeding 3× nominal input voltage. |
| Telecom Line Interface Protection | Motor Drive Gate Driver Supply Rail |
Use Scenario: Shielding RS-485 transceiver VCC pins from ESD and lightning-induced surges on long cable runs in outdoor base stations. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to local ground, filtering >15 kV HBM ESD events per IEC 61000-4-2. Use Value: Maintains communication uptime by preventing transceiver latch-up or internal regulator failure during field-deployed operation. |
Use Scenario: Securing 15 V gate driver supply in 3-phase inverter modules against shoot-through-induced voltage reversal and Miller spikes. IC Role / Device Role / Timing Role: Fast-response TVS placed adjacent to gate driver IC, clamping negative excursions below –0.7 V and positive spikes above 12.9 V. Use Value: Avoids false turn-on of high-side MOSFETs and prevents gate oxide breakdown during high-di/dt motor commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5AHE3/A | Lower PPPM (400 W), smaller DO-214AC (SMA) package, same VWM/VC specs. | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy transients (e.g., IEC 61000-4-5 Level 3). | Select when board space is constrained and surge energy is <50 mJ; verify thermal derating at elevated ambient. |
| SMCJ7.5A-E3/57T | Same electrical specs and DO-214AB package, but commercial-grade (E3) without AEC-Q101 or whisker testing. | Lacks automotive qualification; not accepted in Tier-1 OEM BOMs requiring AEC-Q101 evidence. | Use only in non-automotive industrial or consumer designs where qualification documentation is not mandated. |
Compared with SMCJ7.5CHE3/57T, SMAJ7.5AHE3/A trades surge robustness for footprint reduction, while SMCJ7.5A-E3/57T omits automotive qualification - making SMCJ7.5CHE3/57T the sole choice for AEC-Q101-compliant 1500 W clamping in space-constrained automotive modules.
Availability
SMCJ7.5CHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controller I/O protection, and telecom infrastructure power rail stabilization requiring stable component supply across multi-year production cycles.
Supply support for SMCJ7.5CHE3/57T 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, and protection devices with emphasis on reliability, efficiency, and qualification rigor for demanding environments.
The SMCJ series was developed specifically for high-energy transient suppression in automotive and industrial power systems, targeting AEC-Q101 compliance and robust clamping performance under repeated surge stress.
FAQ
What is the clamping voltage of the SMCJ7.5CHE3/57T at its rated peak pulse current?
The SMCJ7.5CHE3/57T has a maximum clamping voltage (VC) of 12.9 V at 116.3 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per JEDEC standards and guarantees consistent overvoltage limiting during standardized surge events - a key parameter verified in every production lot for the SMCJ7.5CHE3/57T.
Is the SMCJ7.5CHE3/57T qualified for automotive applications?
Yes, the SMCJ7.5CHE3/57T is AEC-Q101 qualified, as confirmed by the HE3 suffix and Vishay's official documentation. It undergoes full stress testing including temperature cycling, high-temperature reverse bias, and mechanical shock - making it approved for use in engine control units, body control modules, and ADAS sensors where automotive-grade reliability is mandatory for the SMCJ7.5CHE3/57T.
What does the "HE3" suffix mean in SMCJ7.5CHE3/57T?
The "HE3" suffix in SMCJ7.5CHE3/57T indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade E3 versions and confirms compliance with automotive reliability requirements - a defining specification for the SMCJ7.5CHE3/57T in qualified BOMs.
Can the SMCJ7.5CHE3/57T be used in bi-directional protection circuits?
No, the SMCJ7.5CHE3/57T is unidirectional, as indicated by the "A" (not "CA") suffix and presence of cathode band marking. For bi-directional applications such as AC line or differential signal protection, the SMCJ7.5CAHE3/57T variant must be used instead - the SMCJ7.5CHE3/57T is electrically and mechanically incompatible with reverse-biased operation.
What is the thermal resistance of the SMCJ7.5CHE3/57T under standard mounting conditions?
The SMCJ7.5CHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, and junction-to-lead resistance (RθJL) of 15 °C/W. These values are measured per JEDEC JESD51-2 and are essential for thermal design validation of the SMCJ7.5CHE3/57T in high-power surge scenarios.
SMCJ7.5CHE3/57T 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 104.9A
- 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)
SMCJ7.5CHE3/57T FAQ
1.How can I place an order for SMCJ7.5CHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5CHE3/57T 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 SMCJ7.5CHE3/57T reliable?
The price and inventory of SMCJ7.5CHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.5CHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ7.5CHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5CHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5CHE3/57T?
SMCJ7.5CHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5CHE3/57T 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 SMCJ7.5CHE3/57T?
For technical support, including SMCJ7.5CHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5CHE3/57T requirements.
6.How does Aetrix verify that SMCJ7.5CHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5CHE3/57T 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 SMCJ7.5CHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ7.5CHE3/57T?
All SMCJ7.5CHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5CHE3/57T, 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 SMCJ7.5CHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ7.5CHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5CHE3/57T Tags
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