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Vishay General Semiconductor - Diodes Division SMCJ7.5CAHE3/57T
- Part No.:
- SMCJ7.5CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5CAHE3/57T.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,998
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Product details
Overview
SMCJ7.5CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features a 7.5 V stand-off voltage (VWM), 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 - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMCJ7.5CAHE3/57T datasheet, SMCJ7.5CAHE3/57T pinout, SMCJ7.5CAHE3/57T application, or SMCJ7.5CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.72), thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal lines without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<100 μA at VWM), while the low incremental surge resistance supports fast energy absorption during ESD or lightning-induced surges.
The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 1500 W PPPM rating applies under standardized 10/1000 μs waveform conditions with derating above TA = 25 °C per published curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum reverse stand-off voltage before conduction begins; defines safe operating range for protected circuit |
| VBR min/max | 8.33 V / 9.21 V at IT = 1.0 mA - verified breakdown threshold ensuring predictable clamping onset |
| VC @ IPPM | 12.9 V at 116.3 A - clamped voltage during 10/1000 μs surge; limits stress on downstream components |
| PPPM | 1500 W - peak pulse power handling capacity under standard surge waveform |
| ID @ VWM | ≤100 μA - low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient; informs heatsinking requirements on standard PCB layout |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common node in bidirectional operation | Connected to line being protected; forms symmetrical clamping path with cathode |
| Cathode | Current exit point in forward bias; common node in bidirectional operation | Connected to line being protected; forms symmetrical clamping path with anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR over lifetime and improved reliability vs. epoxy-passivated alternatives |
| Low clamping ratio (VC/VWM) | 1.72 - tight voltage margin between stand-off and clamping improves system-level surge margin |
| MSL Level 1 compliance | Supports lead-free reflow up to 260 °C peak without moisture-induced damage |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102; compatible with standard SMT processes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rail and ground to shunt surge energy. Use Value: Limits rail voltage to ≤12.9 V during 116.3 A transients, preventing damage to MCU, CAN transceivers, and analog front-ends. | Use Scenario: Safeguarding RS-485 or CAN bus lines in factory automation systems exposed to EFT and surge events. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS on differential data pairs. Use Value: Maintains signal integrity by clamping transients below receiver input thresholds while supporting >1 Mbps data rates via low capacitance design. |
| Consumer Power Adapter Input Protection | Telecom DC Power Feed Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-clamp TVS on +5 V or +9 V output rails. Use Value: Responds within picoseconds to clamp output spikes caused by transformer ringing or feedback loop instability. | Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Bidirectional clamp on power pair relative to chassis ground. Use Value: Absorbs 1500 W surges without degradation, meeting IEC 61000-4-5 Level 4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC7.5CA | Lower PPPM (600 W), same VWM (7.5 V), smaller SMA package | Limited to lower-energy transients; unsuitable for load dump or IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is Class 2 or lower |
| SMCJ7.5CAHM3/57T | Halogen-free variant; identical electrical specs and AEC-Q101 qualification | No functional difference; required only where halogen-free compliance is mandated | Choose for RoHS+halogen-free programs without compromising performance or qualification |
Compared with SMCJ7.5CAHE3/57T, SAC7.5CA trades surge robustness for footprint reduction, while SMCJ7.5CAHM3/57T offers identical protection with halogen-free materials - making the HE3 version optimal for cost-sensitive AEC-Q101 automotive designs where halogen content is unrestricted.
Availability
SMCJ7.5CAHE3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feed surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ7.5CAHE3/57T 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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The SMCJ series is engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where AEC-Q101 validation and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of SMCJ7.5CAHE3/57T at its rated peak pulse current?
The SMCJ7.5CAHE3/57T has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current (IPPM) of 116.3 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components experience limited overvoltage stress during surge events. The SMCJ7.5CAHE3/57T maintains this clamping performance across its full operating temperature range.
Is SMCJ7.5CAHE3/57T qualified for automotive applications?
Yes, SMCJ7.5CAHE3/57T is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". This qualification validates its reliability for automotive use cases including engine control units, body electronics, and ADAS sensor modules. The SMCJ7.5CAHE3/57T undergoes stress testing for temperature cycling, humidity, and mechanical shock per AEC-Q101 requirements.
What does the "CA" suffix indicate in SMCJ7.5CAHE3/57T?
The "CA" suffix in SMCJ7.5CAHE3/57T denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping characteristics in either direction. This eliminates polarity concerns during placement and makes the SMCJ7.5CAHE3/57T ideal for AC lines, differential buses, and floating power domains.
What is the thermal resistance of SMCJ7.5CAHE3/57T, and how does it affect PCB layout?
The SMCJ7.5CAHE3/57T 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. This value assumes minimum recommended pad layout; reducing pad area increases RθJA and risks thermal runaway during repeated surges. For reliable operation, maintain full copper pour under both terminals and avoid narrow traces.
How does SMCJ7.5CAHE3/57T differ from unidirectional SMCJ7.5AHE3/57T?
The SMCJ7.5CAHE3/57T is bidirectional with no polarity marking and symmetrical VBR/VC in both directions, whereas SMCJ7.5AHE3/57T is unidirectional with a cathode band and conducts only in reverse bias. Their stand-off (7.5 V), clamping (12.9 V), and PPPM (1500 W) ratings are identical, but SMCJ7.5CAHE3/57T supports AC or floating applications where polarity reversal may occur - such as in CAN bus or Ethernet PHY protection.
SMCJ7.5CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMCJ7.5CAHE3/57T FAQ
1.How can I place an order for SMCJ7.5CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5CAHE3/57T 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 SMCJ7.5CAHE3/57T reliable?
The price and inventory of SMCJ7.5CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.5CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ7.5CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5CAHE3/57T?
SMCJ7.5CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5CAHE3/57T 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 SMCJ7.5CAHE3/57T?
For technical support, including SMCJ7.5CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5CAHE3/57T requirements.
6.How does Aetrix verify that SMCJ7.5CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5CAHE3/57T 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 SMCJ7.5CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ7.5CAHE3/57T?
All SMCJ7.5CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5CAHE3/57T, 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 SMCJ7.5CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ7.5CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5CAHE3/57T Tags
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