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Vishay General Semiconductor - Diodes Division SMA5J7.0CAHE3_A/H
- Part No.:
- SMA5J7.0CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.0CAHE3_A/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J7.0CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage (VC) at 41.7 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 µs waveform), making it suitable for automotive sensor line protection and industrial I/O interface hardening.
For engineers reviewing the SMA5J7.0CAHE3_A/H datasheet, SMA5J7.0CAHE3_A/H pinout, SMA5J7.0CAHE3_A/H application, or SMA5J7.0CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.71), thermal resistance (RθJA = 80 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 7.78 V and 8.60 V at 10 mA test current. Its glass-passivated junction ensures stable leakage performance (<1 μA at VWM) and fast response to transients (sub-nanosecond), critical for protecting sensitive MOSFET gates and microcontroller I/O pins.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 (260 °C peak reflow). Its AEC-Q101 qualification confirms suitability for automotive applications, including engine control units and ADAS sensor interfaces where reliability under repeated surge stress is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum reverse stand-off voltage before conduction; defines safe operating window for protected circuitry. |
| VBR (min/max) | 7.78 V / 8.60 V - Breakdown occurs within this range at 10 mA; ensures predictable clamping onset. |
| VC @ IPPM | 12.0 V - Clamped voltage during 41.7 A 10/1000 µs surge; limits stress on downstream components. |
| PPPM | 500 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 surge immunity. |
| IPPM | 41.7 A - Peak pulse current at VC; determines minimum trace width and pad area required. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; guides PCB copper pour design for thermal management. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient path | No polarity marking; terminals interchangeable; conducts equally in both directions above VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability, including temperature cycling, humidity bias, and surge endurance testing. |
| Low clamping ratio (VC/VWM) | 1.71 - Minimizes overvoltage exposure during surge events without sacrificing stand-off margin. |
| Glass passivated junction | Ensures stable reverse leakage (<1 μA at 7.0 V) and long-term parameter stability across temperature and life. |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns; peak temperature up to 260 °C supported. |
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 in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning ICs. Use Value: Withstands 500 W surges while clamping to 12.0 V, preserving integrity of 3.3 V/5 V microcontrollers and ADC front-ends. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines to absorb repetitive switching transients from solenoid valves and contactors. Use Value: Low incremental surge resistance and fast response prevent latch-up in optocouplers and level translators during 10/1000 µs surges. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Suppression |
Use Scenario: Input-stage protection for USB-C PD adapters and AC/DC converters exposed to mains-borne transients. IC Role / Device Role / Timing Role: Primary-side TVS across bulk capacitor inputs to limit voltage overshoot during lightning-induced surges. Use Value: 500 W rating and 150 °C TJ max allow sustained operation in compact, thermally constrained enclosures. |
Use Scenario: Secondary-side protection on Ethernet PHY interfaces and DSL line drivers subjected to induced surges from nearby power lines. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential pairs to avoid signal integrity degradation. Use Value: Symmetrical clamping preserves common-mode rejection and minimizes jitter in high-speed data links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.0CAHM3_A/H | Halogen-free variant; identical electrical specs and AEC-Q101 qualification; same SMA package and thermal performance. | No difference in functional use; selected when halogen-free compliance is mandated by OEM or regional regulations. | Choose SMA5J7.0CAHE3_A/H for RoHS-only requirements; choose SMA5J7.0CAHM3_A/H when halogen-free material declaration is required. |
| SMA6J7.0CAHE3_A/H | 600 W PPPM rating (vs. 500 W), higher IPPM (48.2 A), same VWM/VC, larger SMA package footprint (DO-214AB). | Requires PCB layout change due to different package outline and pad dimensions; suited for higher-energy surge environments. | Select SMA6J7.0CAHE3_A/H only when system-level surge testing exceeds IEC 61000-4-5 Level 4; otherwise SMA5J7.0CAHE3_A/H provides optimal cost/size balance. |
Compared with SMA5J7.0CAHM3_A/H, the SMA5J7.0CAHE3_A/H offers identical surge protection performance with standard RoHS compliance but excludes halogen-free certification; compared with SMA6J7.0CAHE3_A/H, it delivers proven 500 W protection in a smaller DO-214AC footprint, reducing board space without compromising AEC-Q101 reliability.
Availability
SMA5J7.0CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card designs requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMA5J7.0CAHE3_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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The SMA5J series is engineered specifically for high-power-density transient suppression in space-constrained, high-surge environments-targeting automotive ECUs, industrial automation, and infrastructure equipment where AEC-Q101 validation and consistent clamping performance are non-negotiable.
FAQ
What is the polarity configuration of the SMA5J7.0CAHE3_A/H?
The SMA5J7.0CAHE3_A/H is a bidirectional TVS diode with symmetrical anode/cathode terminals and no polarity marking. It clamps voltage transients equally in both directions above its breakdown voltage range (7.78 V to 8.60 V), making it ideal for AC-coupled or differential signal lines where polarity reversal may occur. This behavior is confirmed in the Vishay datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS" and verified in the electrical characteristics table for SMA5J7.0CA.
Is the SMA5J7.0CAHE3_A/H qualified for automotive use?
Yes, the SMA5J7.0CAHE3_A/H is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet under "FEATURES" and "ORDERING INFORMATION". The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified versions, and the device undergoes stress testing per the AEC-Q101 standard for transient voltage suppressors-including temperature cycling, high-temperature operating life, and surge endurance. This qualification applies directly to the SMA5J7.0CAHE3_A/H part number.
What is the maximum clamping voltage of the SMA5J7.0CAHE3_A/H at its rated peak pulse current?
The SMA5J7.0CAHE3_A/H has a maximum clamping voltage (VC) of 12.0 V at its rated peak pulse current (IPPM) of 41.7 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This value is listed in the "ELECTRICAL CHARACTERISTICS" table under the SMA5J7.0CA row and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Does the SMA5J7.0CAHE3_A/H require special PCB layout considerations?
Yes-the SMA5J7.0CAHE3_A/H must be mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal-as specified in the "MECHANICAL DATA" and "MAXIMUM RATINGS" sections. This pad size ensures adequate heat dissipation to maintain the 80 °C/W thermal resistance and sustain 500 W surge capability. Smaller pads will increase junction temperature and reduce surge current handling.
How does the SMA5J7.0CAHE3_A/H differ from unidirectional variants like SMA5J7.0AHE3_A/H?
The SMA5J7.0CAHE3_A/H is bidirectional with symmetrical clamping and no polarity band, whereas SMA5J7.0AHE3_A/H is unidirectional with a cathode band marking and forward voltage drop (~3.5 V at 25 A). The "CA" suffix explicitly denotes bidirectional construction per Vishay's ordering nomenclature, and electrical characteristics-including reverse leakage and clamping symmetry-are validated only for CA-suffixed parts. They are not interchangeable without circuit redesign.
SMA5J7.0CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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_A/H FAQ
1.How can I place an order for SMA5J7.0CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/H reliable?
The price and inventory of SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J7.0CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.0CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.0CAHE3_A/H?
SMA5J7.0CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/H?
For technical support, including SMA5J7.0CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.0CAHE3_A/H requirements.
6.How does Aetrix verify that SMA5J7.0CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J7.0CAHE3_A/H?
All SMA5J7.0CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMA5J7.0CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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