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Vishay General Semiconductor - Diodes Division SMCJ7.5CHE3/9AT
- Part No.:
- SMCJ7.5CHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5CHE3/9AT.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,104
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Product details
Overview
SMCJ7.5CHE3/9AT 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 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1 mA, 12.9 V clamping voltage (VC) at 116.3 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SMCJ7.5CHE3/9AT datasheet, SMCJ7.5CHE3/9AT pinout, SMCJ7.5CHE3/9AT application, or SMCJ7.5CHE3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant matte tin terminals, and MSL Level 1 reflow compatibility up to 260 °C peak.
Technical Context
The SMCJ7.5CHE3/9AT operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ps) and low incremental surge resistance to clamp transients induced by inductive load switching or ESD events. Its unidirectional configuration enables integration into DC power rails where reverse conduction must be blocked.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it achieves thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), supporting reliable operation under repetitive surge conditions when mounted per recommended pad layout.
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 - ensures consistent avalanche initiation across production lots |
| VC @ IPPM | 12.9 V at 116.3 A - limits downstream voltage stress during 10/1000 µs surge events |
| PPPM | 1500 W - sustains high-energy transients without failure under standardized waveform |
| TJ max | +150 °C - supports operation in under-hood automotive and industrial environments |
| MSL Level | Level 1 per J-STD-020 - allows unlimited floor life and single-reflow at 260 °C peak |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: DO-214AB (SMCJ), molded epoxy case meeting UL 94 V-0 flammability rating; cathode indicated by band on body; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or low-side return in unidirectional TVS configuration |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., 12 V rail); band-marked end accepts transient energy into ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics applications |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| MSL Level 1 rating | Enables direct placement into high-volume SMT lines without dry-pack or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 13.5 V. Use Value: Clamps to 12.9 V at 116.3 A, preventing damage to downstream LDOs and microcontrollers rated for ≤16 V absolute max. | Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair to shunt transients without distorting <1 MHz signals. Use Value: 1500 W PPPM rating handles ±8 kV contact ESD (IEC 61000-4-2) while maintaining signal integrity due to fast sub-nanosecond response. |
| DC-DC Converter Input Stage | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding buck converter inputs in factory automation equipment exposed to relay coil flyback. IC Role / Device Role / Timing Role: TVS placed upstream of input filter capacitor to absorb 100–500 A inductive spikes. Use Value: Withstands 200 A IFSM (8.3 ms half-sine), enabling robust protection without sacrificial fuse coordination. | Use Scenario: Preventing gate oxide rupture in N-channel MOSFET drivers caused by Miller-induced voltage spikes. IC Role / Device Role / Timing Role: TVS connected between gate and source to clamp dv/dt-induced overshoot during high-side switching. Use Value: 12.9 V VC ensures gate voltage stays below 15 V threshold of common logic-level MOSFETs, avoiding unintended turn-on. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5AHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR/VC specs | Suitable only for lower-energy transients; not qualified to AEC-Q101 | Select when board space is constrained and surge energy remains below 400 W |
| 1.5SMC7.5AHE3/9AT | Same PPPM (1500 W), identical DO-214AB package, but commercial-grade (non-AEC-Q101) | Lacks automotive qualification; may require additional validation for vehicle use | Choose for cost-sensitive industrial designs where AEC-Q101 is not mandated |
Compared with SMCJ7.5CHE3/9AT, SMAJ7.5AHE3/A offers footprint reduction at the expense of surge handling and automotive compliance, while 1.5SMC7.5AHE3/9AT matches power capability but omits AEC-Q101 validation - making SMCJ7.5CHE3/9AT the sole option for drop-in replacement in qualified automotive modules.
Availability
SMCJ7.5CHE3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, and motor drive protection requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for SMCJ7.5CHE3/9AT 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 and automotive-grade performance.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments, targeting applications demanding AEC-Q101 qualification, high surge immunity, and stable clamping behavior over temperature.
FAQ
What is the clamping voltage of the SMCJ7.5CHE3/9AT under maximum surge conditions?
The SMCJ7.5CHE3/9AT clamps to 12.9 V at its rated peak pulse current of 116.3 A using the standard 10/1000 µs waveform. This value is measured under defined test conditions per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components. The clamping voltage remains stable across temperature due to the device's glass-passivated junction and low thermal resistance.
Is the SMCJ7.5CHE3/9AT suitable for automotive applications?
Yes, the SMCJ7.5CHE3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and infotainment systems. Its construction meets MSL Level 1, operates from –55 °C to +150 °C, and withstands load dump and ISO 7637-2 pulses. The HE3 suffix confirms AEC-Q101 qualification, distinguishing it from commercial-grade variants.
How does the SMCJ7.5CHE3/9AT differ from the SMCJ7.5A-E3/9AT?
The SMCJ7.5CHE3/9AT includes AEC-Q101 qualification and enhanced whisker resistance (JESD 201 Class 2), whereas SMCJ7.5A-E3/9AT is commercial grade with JESD 201 Class 1A whisker testing. Both share identical electrical specs and DO-214AB packaging, but only SMCJ7.5CHE3/9AT is approved for automotive deployment per manufacturer documentation.
What is the thermal resistance of the SMCJ7.5CHE3/9AT in typical PCB mounting?
The SMCJ7.5CHE3/9AT 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. Its junction-to-lead resistance (RθJL) is 15 °C/W, enabling effective heat transfer to PCB traces or heatsinks - critical for sustaining repeated surge events without thermal runaway.
Does the SMCJ7.5CHE3/9AT have polarity marking, and how is it oriented in circuit?
Yes, the SMCJ7.5CHE3/9AT is unidirectional and marked with a cathode band on the body. In circuit, the banded end connects to the protected line (e.g., 12 V rail), while the anode connects to ground - ensuring forward conduction only during negative transients and avalanche clamping during positive overvoltages. This orientation prevents reverse leakage during normal operation.
SMCJ7.5CHE3/9AT 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)
SMCJ7.5CHE3/9AT FAQ
1.How can I place an order for SMCJ7.5CHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5CHE3/9AT 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 SMCJ7.5CHE3/9AT reliable?
The price and inventory of SMCJ7.5CHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.5CHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ7.5CHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5CHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5CHE3/9AT?
SMCJ7.5CHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5CHE3/9AT 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 SMCJ7.5CHE3/9AT?
For technical support, including SMCJ7.5CHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5CHE3/9AT requirements.
6.How does Aetrix verify that SMCJ7.5CHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5CHE3/9AT 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 SMCJ7.5CHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ7.5CHE3/9AT?
All SMCJ7.5CHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5CHE3/9AT, 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 SMCJ7.5CHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ7.5CHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5CHE3/9AT Tags
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