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Vishay General Semiconductor - Diodes Division SMAJ8.0A-E3/61
- Part No.:
- SMAJ8.0A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ8.0A-E3/61.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,447
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Product details
Overview
SMAJ8.0A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients 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 test current, 13.6 V maximum clamping voltage (VC) at 29.4 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ8.0A-E3/61 datasheet, SMAJ8.0A-E3/61 pinout, SMAJ8.0A-E3/61 application, or SMAJ8.0A-E3/61 equivalent, key selection criteria include unidirectional polarity, 13.6 V clamping performance under 29.4 A surge, RoHS-compliant matte tin terminations, 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 voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (VBR = 8.89–9.83 V). Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The device is rated for 400 W peak pulse power (10/1000 μs) up to 78 V, derating to 300 W above that; thermal resistance is 120 °C/W junction-to-ambient (RθJA) and 30 °C/W junction-to-lead (RθJL), with maximum operating junction temperature of +150 °C and storage range from –55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 8.0 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping onset. |
| VBR (Breakdown Voltage) | 8.89–9.83 V at IT = 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 13.6 V at IPPM = 29.4 A - Peak voltage seen by protected circuit during full-rated 400 W transient; critical for downstream IC survivability. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 μs) - Surge energy handling capacity on standard waveform; validates robustness against IEC 61000-4-5 Level 3/4 threats. |
| ID (Reverse Leakage) | 50 μA max at VWM = 8.0 V - Low standby current minimizes power loss and avoids false triggering in low-power sensor rails. |
| TJ max. | +150 °C - Enables use in under-hood automotive and high-temperature industrial environments without derating. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with cathode band marking; compatible with JEDEC MS-013 and IPC-7351B footprints. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, MSL Level 1 per J-STD-020, LF peak temperature 260 °C. Cathode indicated by black band on body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events. |
| Anode (unbanded end) | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping current path. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Validated surge handling for IEC 61000-4-5 4 kV/2 Ω combination wave testing in industrial and automotive applications. |
| 13.6 V clamping voltage at 29.4 A | Ensures protected logic-level circuits (e.g., 3.3 V or 5 V microcontrollers) remain within absolute maximum ratings during transients. |
| Glass passivated chip junction | Enhances long-term reliability and stability of VBR and leakage under thermal cycling and humidity exposure. |
| RoHS-compliant, matte tin terminations | Supports lead-free reflow soldering (J-STD-002/JESD 22-B102) and eliminates whisker risk (JESD 201 Class 2). |
| Low profile SMA package | Enables high-density PCB layouts and compatibility with automated pick-and-place equipment for high-volume manufacturing. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply and CAN/LIN bus interface lines from load dump and inductive kickback in BCM ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between power rail and ground, triggered within nanoseconds upon overvoltage detection. Use Value: Limits transient voltage to ≤13.6 V, preventing latch-up or gate oxide damage in MCU I/O and transceiver ICs. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers against field-wiring surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff protector on input front-end, conducting only during >8.89 V excursions while remaining high-impedance otherwise. Use Value: Maintains <50 μA leakage at 8.0 V, avoiding false triggering of optocoupler-based input sensing circuits. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Input Stage |
|
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals or H-bridge power FETs to clamp inductive energy. Use Value: Absorbs 400 W pulses without degradation, enabling reliable operation over 100,000+ motor cycles per specification. |
Use Scenario: Secondary-side transient protection on 48 V telecom rectifier outputs feeding base station control boards. IC Role / Device Role / Timing Role: Final-stage clamping element after bulk filtering, limiting residual surges before DC-DC converters. Use Value: Delivers consistent 13.6 V clamping even after repeated 29.4 A surges, preserving downstream PMIC and FPGA power integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A-M3/61 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMA package. | No difference in circuit function or layout; selected where halogen-free compliance is mandated. | Choose for environmental compliance programs requiring halogen-free materials without design change. |
| SMAJ8.0AHE3_A/H | AEC-Q101 qualified version with same VWM, VBR, VC, and PPPM; enhanced process controls for automotive reliability. | Required for under-hood or safety-critical automotive modules; not necessary for commercial-grade applications. | Specify when automotive qualification (e.g., ISO/TS 16949 production) or extended lifetime validation is required. |
Compared with SMAJ8.0A-E3/61, the M3 variant adds halogen-free compliance without altering electrical behavior, while the HE3 variant adds AEC-Q101 qualification for automotive deployment - neither offers pin-to-pin or functional differentiation beyond material or qualification scope.
Availability
SMAJ8.0A-E3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and consumer appliance motor drive designs requiring stable component supply and full traceability.
Supply support for SMAJ8.0A-E3/61 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, precision, and application-specific optimization.
The SMAJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against ESD, lightning, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of SMAJ8.0A-E3/61 at its rated peak pulse current?
The SMAJ8.0A-E3/61 has a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current (IPPM) of 29.4 A using the 10/1000 μs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and ensures downstream components see no more than 13.6 V during full-rated surge events. The SMAJ8.0A-E3/61 maintains this clamping performance across its specified operating temperature range.
Is SMAJ8.0A-E3/61 suitable for automotive applications?
SMAJ8.0A-E3/61 is RoHS-compliant and qualified for commercial-grade use but is not AEC-Q101 certified. For automotive applications requiring qualification, Vishay offers the SMAJ8.0AHE3_A/H variant. The SMAJ8.0A-E3/61 may be used in non-safety-critical automotive subsystems (e.g., infotainment power rails) if validated per customer requirements, but the SMAJ8.0A-E3/61 itself does not carry AEC-Q101 documentation.
What is the thermal resistance of SMAJ8.0A-E3/61, and how does it affect PCB layout?
The SMAJ8.0A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repetitive surges, PCB layout must provide adequate copper area and minimize trace length - the SMAJ8.0A-E3/61 relies on pad thermal mass rather than external heatsinking.
Does SMAJ8.0A-E3/61 have bidirectional capability?
No, SMAJ8.0A-E3/61 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants carry the "CA" suffix (e.g., SMAJ8.0CA). The SMAJ8.0A-E3/61 conducts only in reverse bias during overvoltage events and blocks forward current like a standard diode; it must be oriented with cathode toward the protected line.
What packaging format is supplied for SMAJ8.0A-E3/61?
SMAJ8.0A-E3/61 is supplied in 7-inch diameter plastic tape and reel format, with a base quantity of 1800 units per reel (ordering code /61). The tape conforms to EIA-481 standards and supports high-speed automated placement. The SMAJ8.0A-E3/61 reel packaging includes moisture barrier bagging compliant with MSL Level 1 handling requirements.
SMAJ8.0A-E3/61 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):
- 29.4A
- Power - Peak Pulse:
- 400W
- 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)
SMAJ8.0A-E3/61 FAQ
1.How can I place an order for SMAJ8.0A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ8.0A-E3/61 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 SMAJ8.0A-E3/61 reliable?
The price and inventory of SMAJ8.0A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ8.0A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ8.0A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ8.0A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ8.0A-E3/61?
SMAJ8.0A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ8.0A-E3/61 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 SMAJ8.0A-E3/61?
For technical support, including SMAJ8.0A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ8.0A-E3/61 requirements.
6.How does Aetrix verify that SMAJ8.0A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ8.0A-E3/61 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 SMAJ8.0A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ8.0A-E3/61?
All SMAJ8.0A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ8.0A-E3/61, 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 SMAJ8.0A-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ8.0A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ8.0A-E3/61 Tags
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