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Vishay General Semiconductor - Diodes Division SMCJ7.5HE3/57T
- Part No.:
- SMCJ7.5HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5HE3/57T.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,860
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Product details
Overview
SMCJ7.5HE3/57T 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 - used in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMCJ7.5HE3/57T datasheet, SMCJ7.5HE3/57T pinout, SMCJ7.5HE3/57T application, or SMCJ7.5HE3/57T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 1500 W surge capability, RoHS-compliant HE3 whisker-tested terminations, and DO-214AB thermal performance under 8.0 mm × 8.0 mm copper pad layout.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, triggering into avalanche conduction when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<100 µA at VWM), while the low incremental surge resistance enables effective energy diversion during fast transients like ISO 7637-2 pulses.
Designed for surface-mount automated placement, it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, and its thermal resistance (RθJA = 75 °C/W, RθJL = 15 °C/W) supports reliable operation up to TJ = +150 °C in constrained PCB layouts with minimum recommended copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - guaranteed avalanche initiation window defining protection threshold tolerance |
| VC @ IPPM | 12.9 V at 116.3 A - clamped voltage during 1500 W transient, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, critical for automotive load-dump immunity |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), relevant for uni-directional fault paths |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| Leakage ID | <100 µA at 7.5 V - minimal standby power loss and signal integrity impact in always-on circuits |
Pinout & Package
Package: DO-214AB (SMCJ), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or lower-potential rail in uni-directional clamp configuration |
| Cathode (banded end) | Avalanche conduction node / high-side connection | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47 |
| Low-profile DO-214AB package | Enables high-density PCB layouts with 0.320" height and 0.220"–0.246" width footprint |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal stress |
| 1500 W peak pulse power | Withstands ISO 16750-2 load dump surges (up to 35 V, 200 ms) when combined with series impedance |
| HE3 suffix | Meets JESD201 Class 2 whisker resistance, suitable for high-reliability automotive harness and ECU assemblies |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and jump-start transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground, clamping surges within nanoseconds. Use Value: Limits rail voltage to ≤12.9 V during 116 A transients, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting transients to ground before reaching precision DAC or op-amp output stage. Use Value: Sub-100 µA leakage preserves loop accuracy; 12.9 V clamping prevents latch-up in 24 V-powered sensor front-ends. |
| DC-DC Converter Input Stage | Telecom Power Supply Surge Suppression |
Use Scenario: Safeguarding buck converter input capacitors and MOSFETs from line-induced spikes in PoE-powered equipment. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of input filter, absorbing energy before LC filtering attenuates high-frequency content. Use Value: 1500 W rating handles repetitive 10/1000 µs surges common in shared building power systems without degradation. | Use Scenario: Secondary-side protection on -48 V telecom rectifier outputs exposed to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Uni-directional clamp referenced to system ground, suppressing positive-going transients on negative rails. Use Value: AEC-Q101 qualification ensures long-term stability in 24/7 base station operation; DO-214AB thermal path sustains 150 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5AHE3/52T | Lower PPPM (600 W), smaller SMB package (DO-214AA), same VWM/VC specs | Reduced surge margin; suitable only for non-automotive, lower-energy transients | Select when board space is constrained and peak surge energy is ≤600 W |
| SMCJ7.5A-E3/57T | Same package and electrical specs but commercial-grade (E3), not AEC-Q101 qualified | Lacks automotive reliability validation; limited to industrial/commercial temperature range assurance | Select for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with SMCJ7.5HE3/57T, SMBJ7.5AHE3/52T trades surge capacity for footprint reduction, while SMCJ7.5A-E3/57T retains identical clamping performance but omits automotive qualification - making SMCJ7.5HE3/57T the sole choice for AEC-Q101-compliant 1500 W protection in DO-214AB.
Availability
SMCJ7.5HE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply designs requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMCJ7.5HE3/57T 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 and application-specific performance.
The SMCJ series was developed to deliver high-power transient suppression in compact surface-mount packages for automotive and industrial systems demanding AEC-Q101 validation and repeatable clamping behavior under harsh thermal and electrical stress.
FAQ
What is the clamping voltage of the SMCJ7.5HE3/57T and how is it measured?
The SMCJ7.5HE3/57T has a maximum clamping voltage (VC) of 12.9 V, measured at its rated peak pulse current (IPPM) of 116.3 A using a standardized 10/1000 µs double-exponential waveform. This value reflects the actual voltage seen by protected circuitry during worst-case surge events and is guaranteed across the full operating temperature range per Vishay's characterization in Document 88394.
Is the SMCJ7.5HE3/57T suitable for automotive applications?
Yes, the SMCJ7.5HE3/57T is AEC-Q101 qualified and explicitly rated for automotive use. Its HE3 suffix confirms compliance with JESD201 Class 2 whisker testing, and its thermal performance (TJ max. = +150 °C) and surge robustness (1500 W, 10/1000 µs) meet requirements for engine control modules, body electronics, and ADAS power domains as defined in ISO 16750-2.
What does the "HE3" suffix mean in SMCJ7.5HE3/57T?
The "HE3" suffix in SMCJ7.5HE3/57T indicates two key attributes: "H" denotes AEC-Q101 qualification, and "E3" specifies RoHS-compliant construction with JESD201 Class 2 whisker resistance. This distinguishes it from commercial-grade "E3" variants and confirms suitability for high-reliability automotive harnesses and ECUs where tin whisker mitigation is mandatory.
How does the SMCJ7.5HE3/57T differ from the SMCJ7.5A-E3/57T?
The SMCJ7.5HE3/57T and SMCJ7.5A-E3/57T share identical electrical specifications and DO-214AB packaging, but only the HE3 version carries AEC-Q101 qualification and JESD201 Class 2 whisker testing. The E3 variant is commercial-grade and lacks automotive reliability validation - making SMCJ7.5HE3/57T the required part for automotive BOMs where qualification evidence is audited.
What PCB layout guidance applies to the SMCJ7.5HE3/57T for optimal thermal performance?
Vishay specifies mounting the SMCJ7.5HE3/57T on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated power dissipation. Maintaining this minimum pad area ensures the specified RθJA of 75 °C/W and prevents thermal runaway during repetitive surge events. Thermal vias under pads are recommended for sustained high-temperature operation near TJ max.
SMCJ7.5HE3/57T 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):
- 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)
SMCJ7.5HE3/57T FAQ
1.How can I place an order for SMCJ7.5HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5HE3/57T 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 SMCJ7.5HE3/57T reliable?
The price and inventory of SMCJ7.5HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.5HE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ7.5HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5HE3/57T?
SMCJ7.5HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5HE3/57T 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 SMCJ7.5HE3/57T?
For technical support, including SMCJ7.5HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5HE3/57T requirements.
6.How does Aetrix verify that SMCJ7.5HE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5HE3/57T 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 SMCJ7.5HE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ7.5HE3/57T?
All SMCJ7.5HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5HE3/57T, 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 SMCJ7.5HE3/57T part is unused and in its original packaging.
Return procedure for SMCJ7.5HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5HE3/57T Tags
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