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Vishay General Semiconductor - Diodes Division SMA5J8.0A-E3/5A
- Part No.:
- SMA5J8.0A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.0A-E3/5A.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,202
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Product details
Overview
SMA5J8.0A-E3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR at 1 mA), 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, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J8.0A-E3/5A datasheet, SMA5J8.0A-E3/5A pinout, SMA5J8.0A-E3/5A application, or SMA5J8.0A-E3/5A equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin-plated leads, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold, limiting transient energy to protect downstream components. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1 ns), while low incremental surge resistance enables effective suppression of 8.3 ms half-sine surges up to 40 A (IFSM).
The SMA5J8.0A-E3/5A is rated for operation from –55 °C to +150 °C, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead). Its SMA (DO-214AC) package supports surface-mount assembly and meets UL 94 V-0 flammability requirements, with cathode band marking for polarity identification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before clamping begins; sets safe operating margin below breakdown. |
| VBR (min/max) | 8.89 V / 9.83 V at 1 mA - verified avalanche onset range; ensures consistent triggering across production lots. |
| VC @ IPPM | 13.6 V at 36.8 A - clamped voltage during 500 W 10/1000 μs surge; defines worst-case stress on protected circuitry. |
| IPPM | 36.8 A - peak pulse current capability under standard 10/1000 μs waveform; determines surge energy handling (500 W). |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMA (DO-214AC) - standardized surface-mount outline with 5.28 mm × 4.50 mm footprint and 2.29 mm height; compatible with J-STD-020 reflow. |
| Polarity | Unidirectional - cathode marked by band; blocks forward conduction above ~3.5 V (VF = 3.5 V at 25 A), conducts only in reverse avalanche. |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, 0.208" × 0.177" body, cathode band marking, and 0.100" lead pitch. Complies with JEDEC DO-214AC mechanical standard and UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side in unidirectional configuration; carries surge current during forward-biased transients (e.g., ESD events). |
| Cathode | Avalanche clamping terminal | Marked by band; connected to higher-potential line (e.g., VIN); initiates clamping when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Low profile SMA package | Enables high-density PCB layout and compatibility with automated pick-and-place equipment (MSL Level 1, 260 °C peak reflow). |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1.0 μA at VWM) across temperature and lifetime. |
| 500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge immunity without derating on standard 5 mm × 5 mm copper pads. |
| Fast response time | <1 ns turn-on delay limits voltage overshoot during ESD (IEC 61000-4-2) and lightning-induced transients. |
| RoHS-compliant E3 suffix | Meets EU RoHS Directive 2011/65/EU and JESD201 Class 2 whisker resistance; suitable for commercial-grade industrial designs. |
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: Unidirectional clamping TVS placed between VBAT and GND, absorbing >500 W transients within nanoseconds. Use Value: Limits rail voltage to ≤13.6 V during 35 V/100 ms load dump, preventing damage to 16 V-rated DC-DC controllers and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector entry point, shunting transients before reaching op-amp input stage. Use Value: Clamps ±8 kV contact ESD (IEC 61000-4-2) to <14 V, preserving signal integrity and avoiding ADC saturation or latch-up. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Suppression |
|
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-rated TVS across 5–20 V output rails, triggered only during fault conditions (e.g., feedback loop failure). Use Value: Maintains 8.0 V nominal regulation while clamping fault excursions to 13.6 V, enabling safe shutdown of downstream PMICs. |
Use Scenario: Primary protection on -48 V telecom power feeds exposed to lightning-induced surges per GR-1089-CORE. IC Role / Device Role / Timing Role: First-stage unidirectional suppressor upstream of DC-DC converters and hot-swap controllers. Use Value: Handles 500 W 10/1000 μs surges without degradation, reducing need for secondary MOV-based protection stages. |
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-M3/5A | Halogen-free, RoHS-compliant variant with identical electrical specs and SMA package; same VWM, VBR, VC, and PPPM. | Required where halogen-free compliance (IEC 61249-2-21) is mandated; no change in PCB layout or thermal design. | Select SMA5J8.0A-M3/5A when environmental compliance extends beyond RoHS to include halogen restrictions. |
| SMA5J8.0AHE3_A/I | AEC-Q101 qualified version with same electrical ratings; includes extended reliability testing (HTOL, TC, UHAST) and traceable automotive lot control. | Qualified for automotive powertrain and chassis modules; supports PPAP documentation and zero-defect manufacturing requirements. | Choose SMA5J8.0AHE3_A/I for automotive OEM or Tier-1 applications requiring AEC-Q101 certification and full traceability. |
Compared with SMA5J8.0A-M3/5A and SMA5J8.0AHE3_A/I, the SMA5J8.0A-E3/5A provides commercial-grade RoHS compliance without halogen-free or automotive qualification overhead - optimal for cost-sensitive industrial and consumer designs where those certifications are not required.
Availability
SMA5J8.0A-E3/5A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and consumer power adapter input stage applications requiring stable component supply, consistent parametric performance, and full traceability through 13" tape-and-reel delivery.
Supply support for SMA5J8.0A-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, TVS devices, and optoelectronics with emphasis on reliability, power density, and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained SMT designs, targeting automotive, industrial, and telecom systems where robustness against IEC/ISO/GR-level surges is mandatory.
FAQ
What is the clamping voltage of the SMA5J8.0A-E3/5A under maximum surge conditions?
The SMA5J8.0A-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 Figure 1 in Vishay document 88875 and defines the upper voltage limit imposed on protected circuitry during a 500 W transient event. The SMA5J8.0A-E3/5A maintains this clamping performance across its full operating temperature range.
Is the SMA5J8.0A-E3/5A suitable for bidirectional transient suppression?
No, the SMA5J8.0A-E3/5A is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies part numbers ending in "CA" (e.g., SMA5J8.0CA). Using the SMA5J8.0A-E3/5A in bidirectional configurations would allow forward conduction during negative transients, potentially damaging the device or failing to clamp. Always verify polarity alignment in schematic capture for the SMA5J8.0A-E3/5A.
What is the maximum printed circuit board pad size recommended for thermal performance of the SMA5J8.0A-E3/5A?
Vishay specifies thermal derating based on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for the SMA5J8.0A-E3/5A, as stated in the Maximum Ratings table. Reducing pad area below this dimension increases junction-to-ambient thermal resistance beyond the rated 80 °C/W, risking thermal runaway during repeated surges. The SMA5J8.0A-E3/5A must be mounted on minimum recommended copper land patterns to sustain its 500 W peak pulse rating.
Does the SMA5J8.0A-E3/5A meet AEC-Q101 qualification?
No, the SMA5J8.0A-E3/5A is a commercial-grade part with RoHS compliance (E3 suffix) but no AEC-Q101 qualification. Vishay offers the SMA5J8.0AHE3_A/I variant for automotive applications requiring AEC-Q101 certification, including HTOL, temperature cycling, and unbiased HAST testing. The SMA5J8.0A-E3/5A is intended for industrial and consumer use where automotive qualification is not mandated.
What is the reverse leakage current specification for the SMA5J8.0A-E3/5A at its rated standoff voltage?
The SMA5J8.0A-E3/5A exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 8.0 V stand-off voltage (VWM), tested at TA = 25 °C per Vishay document 88875. This low leakage ensures minimal power loss in standby mode and avoids false triggering in high-impedance sensing circuits. The SMA5J8.0A-E3/5A maintains this specification across its full –55 °C to +150 °C operating junction temperature range.
SMA5J8.0A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 36.8A
- 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)
SMA5J8.0A-E3/5A FAQ
1.How can I place an order for SMA5J8.0A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.0A-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 SMA5J8.0A-E3/5A reliable?
The price and inventory of SMA5J8.0A-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 SMA5J8.0A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J8.0A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.0A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.0A-E3/5A?
SMA5J8.0A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.0A-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 SMA5J8.0A-E3/5A?
For technical support, including SMA5J8.0A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.0A-E3/5A requirements.
6.How does Aetrix verify that SMA5J8.0A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J8.0A-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 SMA5J8.0A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J8.0A-E3/5A?
All SMA5J8.0A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.0A-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 SMA5J8.0A-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J8.0A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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