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Vishay General Semiconductor - Diodes Division SMA5J8.0-E3/5A
- Part No.:
- SMA5J8.0-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.0-E3/5A.pdf
- Description:
- TVS DIODE 8VWM 15VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,412
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Product details
Overview
SMA5J8.0-E3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR), 13.6 V clamping voltage (VC) at 36.8 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, microcontrollers, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMA5J8.0-E3/5A datasheet, SMA5J8.0-E3/5A pinout, SMA5J8.0-E3/5A application, or SMA5J8.0-E3/5A equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin plating, AEC-Q101 qualification (via HE3 suffix variants), and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 8.0 V and rapidly avalanches above VBR (min 8.89 V) to limit transient overvoltages. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
The device uses a glass-passivated silicon junction and is rated for 40 A non-repetitive forward surge current (IFSM) under 8.3 ms half-sine conditions. Thermal resistance is 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), requiring appropriate PCB copper area for sustained surge handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 8.89 V / 9.83 V at 1.0 mA test current - Ensures reliable turn-on within defined tolerance band |
| VC @ IPPM | 13.6 V at 36.8 A - Clamped voltage during 500 W 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 500 W - Peak pulse power handling capability per single transient event |
| IFSM | 40 A - Surge current rating for 8.3 ms half-sine wave, critical for relay/coil driver protection |
| TJ max | 150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Package | DO-214AC (SMA) - Standard surface-mount outline with cathode band marking, compatible with J-STD-020 MSL Level 1 |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case with matte tin-plated leads, cathode indicated by a band on one end. Mounting requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal for thermal and surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (uni-directional) | Connected to protected line side; conducts only when cathode is > anode by ≥ VBR |
| Cathode (banded end) | Reverse-biased reference terminal | Connected to ground or lower-potential rail; defines polarity and clamping reference point |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| AEC-Q101 qualified (HE3 variant) | Validated for automotive electronics use including engine control, body modules, and ADAS sensors |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking or special handling |
| Low profile DO-214AC footprint | Reduces board space vs. larger packages (e.g., DO-214AB) while maintaining 500 W rating |
| RoHS-compliant E3 termination | Meets JESD201 Class 1A whisker resistance, suitable for high-reliability commercial applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients up to ±100 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power input and ground to shunt surge energy before it reaches LDOs or MCUs. Use Value: Limits clamped voltage to 13.6 V at 36.8 A, preventing damage to 16 V-rated input stages in automotive microcontrollers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD events and cable discharge in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point to absorb sub-100 ns ESD strikes per IEC 61000-4-2 Level 4. Use Value: Fast response time and 13.6 V clamping prevent latch-up or gate oxide rupture in precision op-amps and ADC front-ends. |
| DC Motor Driver Output Protection | Consumer Power Adapter Input Protection |
Use Scenario: Suppressing inductive kickback from brushed DC motors in robotic actuators and power tools. IC Role / Device Role / Timing Role: TVS connected across motor terminals or H-bridge output legs to clamp flyback voltages exceeding MOSFET VDSS. Use Value: 40 A IFSM rating supports repeated switching of 20–30 W motors without degradation; 500 W PPPM handles worst-case back-EMF. | Use Scenario: Guarding AC/DC adapter primary-side rectifier outputs against surges from mains transients and capacitor discharge. IC Role / Device Role / Timing Role: Uni-directional TVS placed after bridge rectifier to clamp overvoltage on bulk capacitor charging path. Use Value: 8.0 V VWM ensures no leakage during normal 9–12 V DC output regulation; 13.6 V VC prevents overvoltage stress on downstream PWM controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J8.0A-E3/61 | Same electrical specs; differs only in packaging - 1800-piece 7" tape vs. 7500-piece 13" tape (5A) | No functional difference; choice depends on production volume and SMT feeder compatibility | Select SMA5J8.0-E3/5A for high-volume automated assembly requiring extended reel length |
| SMA5J8.0AHE3/5A | Identical electrical and mechanical specs; adds AEC-Q101 qualification and JESD201 Class 2 whisker resistance | Required for automotive OEM designs; not necessary for commercial-grade consumer or industrial equipment | Choose SMA5J8.0AHE3/5A when automotive qualification or enhanced lead finish reliability is mandated |
Compared with SMA5J8.0A-E3/61 and SMA5J8.0AHE3/5A, the SMA5J8.0-E3/5A provides identical surge protection performance in a cost-optimized commercial-grade configuration, making it ideal for high-volume non-automotive applications where AEC-Q101 is not required but RoHS compliance and MSL Level 1 reflow support are essential.
Availability
SMA5J8.0-E3/5A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and DC motor driver output protection requiring stable component supply and full traceability.
Supply support for SMA5J8.0-E3/5A 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 high-reliability, high-power-density solutions.
The SMA5J series is engineered for robust transient suppression in space-constrained, high-surge environments - targeting automotive, industrial, and computing applications where 500 W clamping and AEC-Q101 readiness matter.
FAQ
What is the clamping voltage of the SMA5J8.0-E3/5A under maximum surge conditions?
The SMA5J8.0-E3/5A has a maximum clamping voltage (VC) of 13.6 V at 36.8 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per JEDEC/ANSI standards and ensures downstream components see limited overvoltage during transient events. The SMA5J8.0-E3/5A maintains this clamping performance across its specified operating temperature range.
Is the SMA5J8.0-E3/5A suitable for automotive applications?
The SMA5J8.0-E3/5A is RoHS-compliant and MSL Level 1 qualified but is not AEC-Q101 certified. For automotive applications requiring qualification, the SMA5J8.0AHE3/5A variant must be selected. The SMA5J8.0-E3/5A remains appropriate for non-safety-critical automotive subsystems where commercial-grade reliability suffices, such as infotainment power inputs or lighting control modules.
What is the meaning of the "E3/5A" suffix in SMA5J8.0-E3/5A?
The "E3" suffix indicates RoHS-compliant matte tin plating meeting JESD201 Class 1A whisker resistance, while "5A" denotes packaging in a 13-inch diameter plastic tape and reel containing 7500 units. This format is optimized for high-throughput SMT assembly lines. The SMA5J8.0-E3/5A does not imply AEC-Q101 qualification - that requires the "HE3" prefix.
How does the SMA5J8.0-E3/5A differ from bi-directional TVS diodes like SMA5J8.0CA?
The SMA5J8.0-E3/5A is unidirectional and functions like a Zener diode in reverse bias, conducting only when cathode voltage exceeds anode by ≥ VBR. In contrast, SMA5J8.0CA is bi-directional with symmetrical clamping in both polarities - suited for AC lines or differential data paths. The SMA5J8.0-E3/5A offers lower leakage at VWM and is preferred for DC power rail protection.
What PCB layout guidance applies to the SMA5J8.0-E3/5A for optimal surge performance?
Vishay specifies mounting the SMA5J8.0-E3/5A on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W pulse power and thermal dissipation. Traces to the device should be short and wide; ground connections must be low-inductance. Avoid thermal relief on pads, and ensure the cathode band aligns with schematic polarity. The SMA5J8.0-E3/5A's DO-214AC footprint is standardized and supported in all major CAD libraries.
SMA5J8.0-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 33.3A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J8.0-E3/5A FAQ
1.How can I place an order for SMA5J8.0-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.0-E3/5A 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 SMA5J8.0-E3/5A reliable?
The price and inventory of SMA5J8.0-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J8.0-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J8.0-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.0-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.0-E3/5A?
SMA5J8.0-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.0-E3/5A 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 SMA5J8.0-E3/5A?
For technical support, including SMA5J8.0-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.0-E3/5A requirements.
6.How does Aetrix verify that SMA5J8.0-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J8.0-E3/5A 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 SMA5J8.0-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J8.0-E3/5A?
All SMA5J8.0-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.0-E3/5A, 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 SMA5J8.0-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J8.0-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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