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Vishay General Semiconductor - Diodes Division SMA5J7.0AHE3/5A
- Part No.:
- SMA5J7.0AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.0AHE3/5A.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J7.0AHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR at 10 mA), 12.0 V clamping voltage (VC) at 41.7 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform. It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J7.0AHE3/5A datasheet, SMA5J7.0AHE3/5A pinout, SMA5J7.0AHE3/5A application, or SMA5J7.0AHE3/5A equivalent, key selection criteria include clamping performance under 41.7 A surge, unidirectional polarity marking, AEC-Q101 qualification status, thermal resistance (RθJA = 80 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to limit transient energy across protected circuitry. Its glass-passivated junction ensures stable leakage (< 200 µA at 7.0 V) and fast response (< 1 ns), while low incremental surge resistance enables effective suppression of inductive switching spikes and ESD events.
The device is rated for non-repetitive 10/1000 µs surges up to 500 W and handles 40 A forward surge (8.3 ms half-sine). Junction temperature range spans −55 °C to +150 °C, and it meets MSL Level 1 (260 °C reflow peak), supporting robust automotive and industrial deployment without derating below 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system rail margin for reliable standby operation. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 12.0 V at 41.7 A - Clamped voltage during full-rated 500 W surge; defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 500 W - Peak pulse power handling with 10/1000 µs waveform; supports protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| IFSM | 40 A - Single half-sine surge current rating (8.3 ms); validates robustness against motor-commutation transients and load dump events. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower-potential node in typical clamping configuration. | Must be routed to lowest-impedance return path to minimize clamping loop inductance and preserve <12.0 V VC. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line (e.g., 12 V rail or signal trace). | Placement adjacent to IC power pin or connector entry point minimizes transient coupling before suppression occurs. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for engine control, ADAS, and body electronics. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<200 µA) over lifetime, critical for battery-powered and always-on systems. |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced damage; eliminates bake requirement pre-SMT. |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (e.g., relay bounce), enabling sub-12 V clamping even at 41.7 A. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of ECUs, infotainment modules, and lighting controllers against load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Shunt clamping element placed between rail and ground, activated within nanoseconds of overvoltage event. Use Value: Limits rail voltage to ≤12.0 V during 500 W surges, preventing latch-up or permanent damage to 16 V-rated microcontrollers and CAN transceivers. |
Use Scenario: Safeguarding analog front-ends and I²C/SPI lines of pressure, temperature, and position sensors in factory automation equipment. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part protects only DC-biased signal paths (e.g., 3.3 V sensor VDD). Use Value: Clamps ESD strikes (IEC 61000-4-2 ±8 kV contact) to <12.0 V while maintaining <200 µA leakage at 3.3 V, preserving ADC reference stability. |
| DC-DC Converter Input Stage | Motor Drive Gate Driver Protection |
Use Scenario: Front-end surge suppression for 24 V input of isolated buck converters powering PLC I/O modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of input capacitor and controller IC; coordinates with fuse and common-mode choke. Use Value: Absorbs 500 W pulses without degradation, enabling compliance with EN 61000-4-5 Level 3 (2 kV line-earth) without additional crowbar circuitry. |
Use Scenario: Protecting high-side gate driver supply pins (e.g., bootstrap capacitor node) in BLDC motor inverters subject to shoot-through-induced transients. IC Role / Device Role / Timing Role: Fast-acting shunt device placed between gate driver VDD and local ground plane, triggered before driver IC internal protection activates. Use Value: Responds in <1 ns to clamp 40 A inductive kickback, limiting gate driver VDD excursion to 12.0 V and avoiding false turn-on of power MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.0A-E3/5A | No AEC-Q101 qualification; commercial grade only; identical electrical specs and package. | Not approved for automotive production; suitable for industrial or consumer designs where qualification is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and lifecycle assurance is not needed. |
| SMA5J7.0CAHE3/5A | Bidirectional version; symmetric VBR (±7.78–8.60 V); same VC, PPPM, and package. | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN bus) where reverse polarity surges occur. | Choose only if protecting bidirectional data lines; unidirectional SMA5J7.0AHE3/5A is superior for DC rails due to lower leakage and simpler layout. |
Compared with SMA5J7.0A-E3/5A, the HE3 suffix adds AEC-Q101 validation and extended lifetime confidence; compared with SMA5J7.0CAHE3/5A, the unidirectional variant offers tighter leakage control and avoids unnecessary bidirectional capacitance in DC power applications.
Availability
SMA5J7.0AHE3/5A is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and DC-DC converter input staging requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SMA5J7.0AHE3/5A 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 qualification.
The SMA5J series delivers high-power-density TVS protection in compact DO-214AC packages, engineered specifically for harsh-environment surge immunity in automotive power systems and industrial control hardware.
FAQ
What is the clamping voltage of the SMA5J7.0AHE3/5A under maximum rated surge current?
The SMA5J7.0AHE3/5A has a maximum clamping voltage (VC) of 12.0 V when subjected to its peak pulse current (IPPM) of 41.7 A using a 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that protected circuitry will not experience more than 12.0 V during a full 500 W transient event. The SMA5J7.0AHE3/5A maintains this clamping performance across its qualified temperature range.
Is the SMA5J7.0AHE3/5A suitable for automotive applications?
Yes, the SMA5J7.0AHE3/5A is AEC-Q101 qualified, making it suitable for automotive applications including engine control units, body electronics, and ADAS subsystems. Its qualification covers temperature cycling, highly accelerated life testing, and ESD robustness. The SMA5J7.0AHE3/5A is explicitly designated for automotive use via the "HE3" suffix and meets MSL Level 1 reflow requirements.
What does the "HE3" suffix indicate in SMA5J7.0AHE3/5A?
The "HE3" suffix in SMA5J7.0AHE3/5A denotes RoHS-compliant construction with AEC-Q101 qualification and halogen-free molding compound. It distinguishes this automotive-grade variant from commercial versions (e.g., "E3") and confirms compliance with JESD201 Class 2 whisker resistance. The SMA5J7.0AHE3/5A is intended for mission-critical deployments where long-term reliability and regulatory alignment are mandatory.
How does the SMA5J7.0AHE3/5A differ from the SMA5J7.0CAHE3/5A?
The SMA5J7.0AHE3/5A is unidirectional, with cathode band marking and asymmetric conduction (forward-biased anode-to-cathode), whereas the SMA5J7.0CAHE3/5A is bidirectional, offering symmetrical clamping in both polarities. Electrically, they share identical VBR, VC, and PPPM, but the SMA5J7.0AHE3/5A exhibits lower reverse leakage at VWM, making it preferred for DC power rail protection.
What PCB pad layout is recommended for optimal thermal and electrical performance of the SMA5J7.0AHE3/5A?
Vishay specifies mounting the SMA5J7.0AHE3/5A on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W pulse power and maintain RθJA = 80 °C/W. Thermal vias under pads and connection to inner-layer ground planes are recommended for sustained surge duty. The SMA5J7.0AHE3/5A datasheet provides exact DO-214AC footprint dimensions and solder mask clearance guidance.
SMA5J7.0AHE3/5A 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMA5J7.0AHE3/5A FAQ
1.How can I place an order for SMA5J7.0AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.0AHE3/5A 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 SMA5J7.0AHE3/5A reliable?
The price and inventory of SMA5J7.0AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J7.0AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J7.0AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.0AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.0AHE3/5A?
SMA5J7.0AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.0AHE3/5A 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 SMA5J7.0AHE3/5A?
For technical support, including SMA5J7.0AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.0AHE3/5A requirements.
6.How does Aetrix verify that SMA5J7.0AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J7.0AHE3/5A 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 SMA5J7.0AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J7.0AHE3/5A?
All SMA5J7.0AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.0AHE3/5A, 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 SMA5J7.0AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J7.0AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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