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Vishay General Semiconductor - Diodes Division SMA5J8.0CA-E3/5A
- Part No.:
- SMA5J8.0CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.0CA-E3/5A.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,251
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Product details
Overview
SMA5J8.0CA-E3/5A 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 8.0 V stand-off voltage (VWM), 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J8.0CA-E3/5A datasheet, SMA5J8.0CA-E3/5A pinout, SMA5J8.0CA-E3/5A application, or SMA5J8.0CA-E3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification eligibility (via HE3/HM3 variants), 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 voltage-clamped crowbar during transients, leveraging an avalanche breakdown junction to limit reverse voltage across protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, with no polarity marking required on the SMA package.
Thermal performance is defined by RθJA = 80 °C/W and RθJL = 25 °C/W, supporting operation from −55 °C to +150 °C junction temperature. The glass-passivated chip junction enables stable leakage (<1.0 µA at VWM) and fast response time under ESD and lightning-induced surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 8.89 V / 9.83 V - breakdown voltage range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 13.6 V - clamped voltage at 36.8 A peak pulse current, limiting stress on downstream ICs |
| PPPM | 500 W - peak pulse power handling with 10/1000 µs waveform, enabling robust surge immunity |
| IPPM | 36.8 A - maximum non-repetitive surge current the device safely conducts without failure |
| TJ max | +150 °C - maximum junction temperature, supporting under-hood automotive and industrial environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking - bidirectional construction eliminates cathode/anode distinction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; surge current flows bidirectionally between them during overvoltage events |
| Case (exposed metal slug) | Thermal conduction path | Integral thermal mass aids heat dissipation into PCB copper pads; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1.0 µA) across temperature and lifetime |
| MSL Level 1 compliance | Allows unlimited floor life and reflow at 260 °C peak, eliminating bake requirements pre-assembly |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
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 inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Clamps transients to ≤13.6 V while sustaining 36.8 A pulses, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding digital input modules against field-wiring induced surges in factory automation control cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with upstream fusing and filtering. Use Value: Withstands repeated 500 W surges per IEC 61000-4-5 (10/700 µs), reducing field failure rates in harsh electromagnetic environments. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Transient suppression on Ethernet PHY side of PoE-powered devices exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bidirectional TVS bridging differential pairs to ground, complementing common-mode chokes. Use Value: Symmetric clamping ensures equal protection on both line polarities, maintaining signal balance and minimizing jitter during surge events. | Use Scenario: Secondary-side overvoltage protection on 5 V/9 V USB-C PD adapter outputs against regulator fault or feedback loop failure. IC Role / Device Role / Timing Role: Last-line defense clamping output rail to safe level before connected device power management ICs. Use Value: Fast response and low VC prevent damage to USB controller ICs rated for ≤6 V absolute maximum input. |
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-E3/5A | Unidirectional variant; same VWM, VBR, VC, and PPPM, but marked with cathode band and requires polarity-aware layout | Restricted to DC-biased or unidirectional signal paths; unsuitable for AC or floating lines | Select when protecting grounded 5 V logic rails where polarity is fixed and lower cost is prioritized |
| SMBJ8.0CA-E3/52 | Same bidirectional functionality but in SMB (DO-214AA) package; 600 W PPPM, higher IPPM (43.4 A), larger footprint (4.58 mm × 3.94 mm vs. 4.50 mm × 2.79 mm) | Better surge margin but incompatible with dense layouts requiring SMA footprint; not drop-in | Choose when system-level surge testing exceeds 500 W requirements and board space allows SMB size |
Compared with SMA5J8.0A-E3/5A, the SMA5J8.0CA-E3/5A eliminates polarity constraints for floating interfaces; versus SMBJ8.0CA-E3/52, it trades 100 W surge headroom for 30 % smaller PCB area and direct compatibility with existing SMA-reflow profiles.
Availability
SMA5J8.0CA-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter secondary-side clamping requiring stable component supply and RoHS-compliant sourcing.
Supply support for SMA5J8.0CA-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 reliability, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained applications, targeting AEC-Q101-compliant automotive subsystems and industrial equipment requiring robust 500 W surge immunity in minimal footprint.
FAQ
What is the clamping voltage of the SMA5J8.0CA-E3/5A under maximum rated surge current?
The SMA5J8.0CA-E3/5A exhibits a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current (IPPM) of 36.8 A using a 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that protected circuitry downstream will not experience reverse voltage exceeding 13.6 V during such transient events. The SMA5J8.0CA-E3/5A maintains this performance across its full operating temperature range.
Is the SMA5J8.0CA-E3/5A suitable for automotive applications?
Yes, the SMA5J8.0CA-E3/5A is qualified for automotive use when ordered with HE3 or HM3 suffixes (e.g., SMA5J8.0CAHE3_A/I), which denote AEC-Q101 qualification. The base SMA5J8.0CA-E3/5A meets commercial-grade specifications including MSL Level 1 and RoHS compliance. For automotive deployment, specify the HE3/HM3 variant to ensure validated reliability under temperature cycling, humidity, and mechanical shock per AEC-Q101.
How does the bidirectional design of the SMA5J8.0CA-E3/5A affect PCB layout?
The SMA5J8.0CA-E3/5A has no polarity marking and functions identically in both directions, simplifying PCB layout by eliminating orientation constraints during automated placement. Unlike unidirectional variants such as SMA5J8.0A-E3/5A, it requires no cathode band alignment and can protect AC-coupled or floating nodes without additional routing considerations. This symmetry reduces assembly errors and supports compact, symmetric trace routing around the SMA5J8.0CA-E3/5A device.
What is the thermal resistance of the SMA5J8.0CA-E3/5A, and how does it impact power derating?
The SMA5J8.0CA-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per Vishay's recommended layout. This value determines power derating above 25 °C ambient: for example, at 85 °C ambient, the device's usable peak pulse power drops to ~300 W. Proper pad sizing and thermal vias are essential to maintain the SMA5J8.0CA-E3/5A within its 150 °C maximum junction temperature limit.
Does the SMA5J8.0CA-E3/5A meet industry surge immunity standards like IEC 61000-4-5?
Yes, the SMA5J8.0CA-E3/5A is designed to support compliance with IEC 61000-4-5 (surge immunity) when applied per Vishay's recommended layout and coordinated with system-level filtering. Its 500 W peak pulse power rating with 10/1000 µs waveform aligns with the standard's combination wave test levels. Engineers must verify full system performance through testing, as the SMA5J8.0CA-E3/5A alone does not constitute full compliance but provides the core clamping capability required.
SMA5J8.0CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMA5J8.0CA-E3/5A FAQ
1.How can I place an order for SMA5J8.0CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.0CA-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 SMA5J8.0CA-E3/5A reliable?
The price and inventory of SMA5J8.0CA-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 SMA5J8.0CA-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J8.0CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.0CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.0CA-E3/5A?
SMA5J8.0CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.0CA-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 SMA5J8.0CA-E3/5A?
For technical support, including SMA5J8.0CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.0CA-E3/5A requirements.
6.How does Aetrix verify that SMA5J8.0CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J8.0CA-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 SMA5J8.0CA-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J8.0CA-E3/5A?
All SMA5J8.0CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.0CA-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 SMA5J8.0CA-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J8.0CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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