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Vishay General Semiconductor - Diodes Division SMA5J7.0CAHE3/5A
- Part No.:
- SMA5J7.0CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.0CAHE3/5A.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,535
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Product details
Overview
SMA5J7.0CAHE3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection on signal and power lines. It features a 7.0 V stand-off voltage (VWM), 12.0 V clamping voltage (VC) at 41.7 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 µs waveform), commonly deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J7.0CAHE3/5A datasheet, SMA5J7.0CAHE3/5A pinout, SMA5J7.0CAHE3/5A application, or SMA5J7.0CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical clamping in both polarities due to its bidirectional construction. Its breakdown voltage (VBR) is specified between 7.78 V and 8.60 V at 10 mA test current, ensuring tight voltage tolerance for precision protection.
Thermally, it supports operation from –55 °C to +150 °C with a junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted per recommended pad layout. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 7.78 V / 8.60 V - Breakdown occurs within this range at 10 mA, defining turn-on threshold consistency |
| VC @ IPPM | 12.0 V - Clamped voltage during 41.7 A 10/1000 µs surge, limiting downstream stress |
| PPPM | 500 W - Peak transient power handling capacity under standardized surge waveform |
| IPPM | 41.7 A - Maximum non-repetitive surge current the device safely clamps without failure |
| TJ max. | +150 °C - Maximum junction temperature enabling reliable operation in under-hood automotive environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking on bidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bidirectional terminals - either lead serves as input/output; no cathode band marking |
| Case (body) | Thermal and mechanical interface | Plastic encapsulation with UL 94 V-0 rating; requires 5.0 mm × 5.0 mm copper pads per terminal for rated power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control modules and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for sensitive ICs |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak, simplifying high-volume SMT manufacturing |
| Glass-passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role: Bidirectional TVS placed at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Clamps 12.0 V at 41.7 A while maintaining 7.0 V stand-off, preserving signal integrity and preventing latch-up in 5 V/3.3 V sensor front-ends. | Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to inductive switching noise from solenoids and relays. IC Role / Device Role: Transient suppressor on 24 V DC input lines, absorbing repetitive surges up to 500 W without degradation. Use Value: Withstands >1000 surges at rated conditions and maintains stable VBR across –55 °C to +150 °C, supporting wide-temperature industrial deployment. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHY interfaces and RS-485 transceivers against lightning-induced surges and EFT bursts in network equipment. IC Role / Device Role: Primary protection element on differential data lines, leveraging symmetrical clamping to preserve common-mode rejection. Use Value: Low capacitance (<50 pF typical at VWM) avoids signal distortion at 100 Mbps+, while 500 W rating exceeds IEC 61000-4-5 Level 4 requirements. | Use Scenario: Secondary-side overvoltage suppression on 5 V USB-C PD adapter outputs to prevent damage during fault conditions. IC Role / Device Role: Final-stage clamp after DC-DC regulation, absorbing output capacitor discharge energy and regulator overshoot. Use Value: Fast response time (<1 ns) and 12.0 V clamping ensure downstream USB peripherals remain within absolute maximum ratings during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.0CA-E3/5A | Commercial-grade version; lacks AEC-Q101 qualification and halogen-free compliance | Suitable for non-automotive industrial or consumer applications where automotive reliability is not required | Select when cost sensitivity outweighs automotive qualification needs and halogen-free materials are optional |
| SMA6J7.0CAHE3/5A | 600 W rating (vs. 500 W); identical VWM, VBR, and package; higher IPPM (47.2 A) | Preferred for systems requiring higher surge margin, such as EV charging station interfaces or heavy-duty motor controls | Choose when design margins demand ≥600 W peak pulse power and board space allows same-footprint upgrade |
Compared with SMA5J7.0CA-E3/5A, the SMA5J7.0CAHE3/5A adds AEC-Q101 qualification and halogen-free construction for automotive use, while SMA6J7.0CAHE3/5A increases surge robustness by 20 % without changing footprint-enabling direct performance scaling in demanding environments.
Availability
SMA5J7.0CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface designs requiring stable component supply, AEC-Q101 compliance, and RoHS/halogen-free assurance.
Supply support for SMA5J7.0CAHE3/5A 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, power density, and automotive-grade validation.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained applications, targeting automotive, industrial, and telecom systems where robustness against ISO 7637-2 and IEC 61000-4-5 threats is mandatory.
FAQ
What is the clamping voltage of the SMA5J7.0CAHE3/5A under maximum rated surge current?
The SMA5J7.0CAHE3/5A exhibits a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current (IPPM) of 41.7 A using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C on the recommended 5.0 mm × 5.0 mm copper pad layout and defines the upper voltage limit imposed on protected circuitry during transient events. The SMA5J7.0CAHE3/5A maintains this clamping performance across its full operating temperature range.
Is the SMA5J7.0CAHE3/5A suitable for automotive applications?
Yes, the SMA5J7.0CAHE3/5A is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials, making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its operating junction temperature range of –55 °C to +150 °C and MSL Level 1 rating support reflow soldering and under-hood reliability. The SMA5J7.0CAHE3/5A is explicitly designated for automotive use via the "HE3" suffix per Vishay's ordering nomenclature.
How does the bidirectional configuration of the SMA5J7.0CAHE3/5A affect its usage compared to unidirectional variants?
The SMA5J7.0CAHE3/5A provides symmetrical clamping in both directions, eliminating polarity concerns during PCB layout and enabling protection of AC-coupled, floating, or differential signal lines without external biasing. Unlike unidirectional versions (e.g., SMA5J7.0A), it has no cathode band marking and delivers identical VBR, VC, and IPPM characteristics regardless of voltage polarity. This simplifies design for interfaces like RS-485, CAN, or audio lines where signal swing crosses ground.
What is the thermal resistance of the SMA5J7.0CAHE3/5A, and how does it impact layout design?
The SMA5J7.0CAHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on the minimum recommended 5.0 mm × 5.0 mm copper pads per terminal. This value assumes standard JEDEC test conditions and directly impacts sustained surge capability: larger copper areas reduce RθJA, lowering junction temperature rise during repeated transients. Layout must adhere to Vishay's specified pad dimensions to guarantee rated 500 W pulse power performance.
Does the SMA5J7.0CAHE3/5A have a specified junction capacitance, and is it suitable for high-speed data lines?
Yes, the SMA5J7.0CAHE3/5A exhibits typical junction capacitance (CJ) of <50 pF at VWM = 7.0 V and f = 1.0 MHz, as confirmed in Vishay's characteristic curves. This low capacitance enables use on moderate-speed data lines such as RS-485, CAN FD, and Ethernet PHY interfaces without significant signal integrity degradation. However, for >1 Gbps serial links (e.g., USB 3.2, PCIe), lower-capacitance TVS arrays or specialized ESD suppressors are recommended instead of the SMA5J7.0CAHE3/5A.
SMA5J7.0CAHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 41.7A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J7.0CAHE3/5A FAQ
1.How can I place an order for SMA5J7.0CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.0CAHE3/5A 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 SMA5J7.0CAHE3/5A reliable?
The price and inventory of SMA5J7.0CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J7.0CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J7.0CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.0CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.0CAHE3/5A?
SMA5J7.0CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.0CAHE3/5A 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 SMA5J7.0CAHE3/5A?
For technical support, including SMA5J7.0CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.0CAHE3/5A requirements.
6.How does Aetrix verify that SMA5J7.0CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J7.0CAHE3/5A 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 SMA5J7.0CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J7.0CAHE3/5A?
All SMA5J7.0CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.0CAHE3/5A, 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 SMA5J7.0CAHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J7.0CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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