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Vishay General Semiconductor - Diodes Division SMCJ7.5CAHE3_A/H
- Part No.:
- SMCJ7.5CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5CAHE3_A/H.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,192
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Product details
Overview
SMCJ7.5CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) 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 maximum clamping voltage (VC) at 116.3 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ7.5CAHE3_A/H datasheet, SMCJ7.5CAHE3_A/H pinout, SMCJ7.5CAHE3_A/H application, or SMCJ7.5CAHE3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, 1500 W surge capability, low 0.067 %/°C VBR temperature coefficient, and compatibility with automated SMT assembly on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche breakdown mechanism to shunt surge energy away from downstream circuitry. Its bidirectional structure enables symmetric clamping in both polarities without external polarity management, making it suitable for AC-coupled or floating signal paths.
Designed per ANSI/IEEE C62.35 standards, the SMCJ7.5CAHE3_A/H delivers sub-nanosecond response time and low incremental surge resistance, with thermal performance characterized by RθJA = 75 °C/W and RθJL = 15 °C/W. It meets MSL Level 1 per J-STD-020 and supports peak junction temperatures up to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - guaranteed avalanche onset range under standardized test conditions |
| VC @ IPPM | 12.9 V at 116.3 A - clamped voltage during full 1500 W surge, defining worst-case stress on protected IC |
| PPPM | 1500 W - peak transient power handling with 10/1000 µs waveform, derated above 25 °C |
| TJ max | +150 °C - maximum allowable junction temperature, enabling operation in under-hood automotive environments |
| Temp Coeff | 0.067 %/°C - low VBR drift ensures stable clamping threshold across temperature extremes |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 8.13 mm footprint and 3.20 mm height |
Pinout & Package
SMCJ7.5CAHE3_A/H uses the SMC (DO-214AB) package: a two-terminal, bidirectional device with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Functions identically to cathode under reverse bias; both terminals serve as symmetrical surge conduction paths |
| Cathode | Transient return path (bidirectional) | No functional distinction from anode; device exhibits identical VBR and VC in either direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress requirements |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| MSL Level 1 rating | Enables direct placement without baking; compatible with standard reflow profiles peaking at 260 °C |
| Low clamping ratio (VC/VBR) | 12.9 V / 8.77 V ≈ 1.47 - tight ratio minimizes voltage overshoot during surge events |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS compliance; HM3 variant adds halogen-free molding compound |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VCC and GND, clamping transients within 1 ns to prevent latch-up or gate oxide damage. Use Value: Withstands 1500 W surges while limiting voltage to ≤12.9 V, ensuring MCU operation remains within absolute maximum ratings. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation systems from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Placed differentially across signal and return, providing symmetrical clamping without polarity constraints. Use Value: 0.067 %/°C VBR tempco maintains consistent protection margin across -40 °C to +125 °C ambient ranges. |
| Telecom Interface Surge Suppression | Consumer Device USB Port Protection |
Use Scenario: Safeguarding RS-485 transceiver I/O pins in base station backhaul modules exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Connected line-to-line and line-to-ground in parallel with data lines, absorbing common-mode and differential-mode transients. Use Value: 116.3 A IPPM rating handles high-energy 10/1000 µs threats defined in ITU-T K.20/21, reducing system-level failure rate. | Use Scenario: Adding secondary overvoltage protection on VBUS lines of USB-C ports in portable media players subjected to hot-plug and adapter fault conditions. IC Role / Device Role / Timing Role: Positioned upstream of USB power delivery controller, acting as last-resort clamp after primary polyfuse and ESD diodes. Use Value: SMC package enables compact layout with 1500 W capacity - exceeding IEC 61000-4-5 Level 4 requirements for portable equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5CA-E3/61 | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Suitable only for lower-energy transients; not recommended for automotive load dump | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 ESD only |
| 1.5KE7.5CA | Through-hole DO-201 package, same VWM/VC but higher parasitic inductance and manual assembly requirement | Lacks AEC-Q101 qualification and MSL Level 1 rating; unsuitable for automated SMT production | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMAJ7.5CA-E3/61 and 1.5KE7.5CA, the SMCJ7.5CAHE3_A/H provides 3.75× higher surge power rating, AEC-Q101 qualification for automotive use, and MSL Level 1 compatibility - making it the preferred choice for high-reliability SMT applications demanding robust 1500 W transient immunity.
Availability
SMCJ7.5CAHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom infrastructure equipment, and consumer USB power delivery systems requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ7.5CAHE3_A/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments including automotive, industrial, and telecom applications where AEC-Q101 compliance and 1500 W surge handling are critical.
FAQ
What does the "CA" suffix indicate in SMCJ7.5CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration: the SMCJ7.5CAHE3_A/H provides symmetrical clamping in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity applied across its terminals. This eliminates the need for polarity-aware layout and supports AC-coupled or floating signal paths, unlike unidirectional variants (e.g., SMCJ7.5A) which require correct cathode orientation.
Is SMCJ7.5CAHE3_A/H qualified for automotive applications?
Yes, SMCJ7.5CAHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code convention ("HE3" suffix) and documentation. It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements, making it suitable for under-hood and chassis-mounted automotive electronics such as body control modules and ADAS sensor interfaces.
What is the maximum clamping voltage of SMCJ7.5CAHE3_A/H and how is it measured?
The maximum clamping voltage (VC) of SMCJ7.5CAHE3_A/H is 12.9 V, measured at 116.3 A peak pulse current (IPPM) using a standardized 10/1000 µs double-exponential surge waveform. This value represents the worst-case voltage seen by downstream circuitry during a full-rated 1500 W transient event, and is guaranteed across the operating temperature range per Vishay's datasheet specifications.
How does the thermal resistance of SMCJ7.5CAHE3_A/H affect PCB layout?
The SMCJ7.5CAHE3_A/H has RθJA = 75 °C/W and RθJL = 15 °C/W, meaning effective heat dissipation requires adherence to the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal. Deviating from this layout increases junction temperature rise during repetitive surges, potentially degrading long-term reliability or triggering thermal shutdown in adjacent components - especially critical in enclosed automotive enclosures.
Can SMCJ7.5CAHE3_A/H replace SMCJ7.5A in an existing design?
No, SMCJ7.5CAHE3_A/H cannot directly replace unidirectional SMCJ7.5A without layout review: although both share identical VWM, VBR, and VC ratings, the CA version is bidirectional with no polarity marking, whereas the A version requires correct cathode orientation. Swapping them may result in improper clamping behavior if the original design relies on unidirectional conduction paths or DC biasing schemes.
SMCJ7.5CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 116.3A
- 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)
SMCJ7.5CAHE3_A/H FAQ
1.How can I place an order for SMCJ7.5CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5CAHE3_A/H 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 SMCJ7.5CAHE3_A/H reliable?
The price and inventory of SMCJ7.5CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.5CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ7.5CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5CAHE3_A/H?
SMCJ7.5CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5CAHE3_A/H 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 SMCJ7.5CAHE3_A/H?
For technical support, including SMCJ7.5CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5CAHE3_A/H requirements.
6.How does Aetrix verify that SMCJ7.5CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5CAHE3_A/H 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 SMCJ7.5CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ7.5CAHE3_A/H?
All SMCJ7.5CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5CAHE3_A/H, 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 SMCJ7.5CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ7.5CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5CAHE3_A/H Tags
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