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Vishay General Semiconductor - Diodes Division SMAJ8.0AHE3/61
- Part No.:
- SMAJ8.0AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ8.0AHE3/61.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,375
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Product details
Overview
SMAJ8.0AHE3/61 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 electronics.
For engineers reviewing the SMAJ8.0AHE3/61 datasheet, SMAJ8.0AHE3/61 pinout, SMAJ8.0AHE3/61 application, or SMAJ8.0AHE3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector: when reverse voltage exceeds VBR (8.89–9.83 V), it avalanches to clamp transient energy within nanoseconds. Its glass-passivated junction ensures stable leakage (<50 μA at VWM) and low incremental surge resistance, enabling consistent clamping across repetitive surges up to 0.01% duty cycle.
The device is rated for 40 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and operates over -55 °C to +150 °C junction temperature range. Its SMA package supports MSL Level 1 handling and lead-free soldering per J-STD-002/JESD 22-B102, with matte tin-plated terminals and UL 94 V-0 molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC bias margin. |
| VBR (min/max) | 8.89 V / 9.83 V at IT = 1 mA - Breakdown onset range; determines minimum clamping threshold under transient stress. |
| VC @ IPPM | 13.6 V at 29.4 A - Clamped voltage during 10/1000 μs surge; directly limits stress on downstream ICs or MOSFETs. |
| PPPM | 400 W - Peak pulse power handling capability; enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| ID @ VWM | ≤50 μA - Reverse leakage at stand-off voltage; critical for low-power sensor or battery-backed circuits. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive or high-ambient industrial environments. |
| RθJA | 120 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line (e.g., ground or return path); conducts during forward surge events. |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential side (e.g., VCC or signal line); avalanches to clamp transients exceeding VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and infotainment systems. |
| 400 W peak pulse power (10/1000 μs) | Handles high-energy transients without degradation; supports compliance with ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge standards. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage over lifetime; eliminates risk of moisture-induced parameter drift in humid environments. |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without popcorn cracking or delamination; no pre-bake required. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on protected devices - e.g., keeps 3.3 V or 5 V logic rails below destructive thresholds during ESD or load dump. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V power rails in body control modules from load dump transients (up to 60 V, 100 ms duration) and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt clamping element placed between VBAT and GND, triggered within <1 ns to limit rail voltage to ≤13.6 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during alternator field collapse events. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) and digital I/O (I²C, SPI) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional or unidirectional transient suppressor mounted at connector entry point, clamping ESD (±15 kV) and inductive kickback. Use Value: Maintains signal integrity and prevents false readings or sensor reset by limiting transient overshoot to <14 V on 5 V or 3.3 V reference lines. |
| Consumer Device USB Port Protection | Telecom Equipment DC Power Input Protection |
|
Use Scenario: Shielding USB 2.0 data lines (D+/D−) and VBUS supply in smart home hubs from ESD and hot-plug surges. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS and bidirectional variants on differential pairs; responds in sub-nanosecond time. Use Value: Enables compliance with IEC 61000-4-2 Level 4 (±15 kV air/±8 kV contact) without adding series impedance or signal distortion. |
Use Scenario: Guarding -48 V DC telecom power inputs against lightning-induced surges and switching transients in base station power supplies. IC Role / Device Role / Timing Role: Primary clamping stage upstream of DC-DC converters and PMICs; absorbs multi-kW surge energy via parallel TVS arrays. Use Value: Extends system uptime by preventing catastrophic failure of front-end rectifiers and FETs during outdoor cabinet surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A-E3/61 | Commercial-grade version; lacks AEC-Q101 qualification and automotive traceability documentation. | Approved for consumer and industrial use only; not permitted in automotive OEM BOMs requiring PPAP or AEC validation. | Select SMAJ8.0AHE3/61 when automotive qualification, extended temperature validation, or zero-defect manufacturing traceability is required. |
| SMBJ8.0AHE3/61 | Same electrical specs but in larger SMB (DO-214AA) package; 600 W PPPM rating and lower RθJA (90 °C/W). | Better thermal performance and higher surge margin; requires larger PCB footprint and different pad layout. | Choose SMBJ8.0AHE3/61 if system-level surge immunity must exceed 400 W or board layout allows 5.3 mm × 4.6 mm footprint. |
Compared with SMAJ8.0A-E3/61, the SMAJ8.0AHE3/61 adds automotive qualification and process controls without altering clamping behavior; versus SMBJ8.0AHE3/61, it trades surge headroom and thermal margin for space-constrained layouts where SMA's 4.9 mm × 4.0 mm footprint is mandatory.
Availability
SMAJ8.0AHE3/61 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, and telecom power supplies requiring stable component supply, AEC-Q101 compliance, and long-term lifecycle support.
Supply support for SMAJ8.0AHE3/61 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMAJ series targets robust transient suppression in harsh environments - engineered for automotive, industrial, and telecom applications where failure modes must be mitigated through precise clamping, low leakage, and validated qualification.
FAQ
What is the clamping voltage of the SMAJ8.0AHE3/61 under a 10/1000 μs surge?
The SMAJ8.0AHE3/61 exhibits a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current of 29.4 A using the standardized 10/1000 μs waveform. This value is measured at TJ = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the SMAJ8.0AHE3/61 suitable for automotive applications?
Yes, the SMAJ8.0AHE3/61 is AEC-Q101 qualified and specifically designated for automotive use with suffix "HE3". It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation per AEC standards - making it appropriate for engine control units, ADAS camera modules, and infotainment power rails where reliability under thermal and electrical stress is mandatory.
How does the SMAJ8.0AHE3/61 differ from the SMAJ8.0A-E3/61?
The SMAJ8.0AHE3/61 differs from the SMAJ8.0A-E3/61 primarily in qualification and traceability: HE3 denotes AEC-Q101 qualification, extended temperature validation, and automotive-grade manufacturing controls, while E3 is commercial-grade only. Both share identical electrical parameters, package, and marking - but only SMAJ8.0AHE3/61 satisfies OEM automotive BOM requirements.
What is the maximum reverse leakage current for the SMAJ8.0AHE3/61 at its stand-off voltage?
The SMAJ8.0AHE3/61 has a maximum reverse leakage current (ID) of 50 μA at its 8.0 V stand-off voltage (VWM), tested at TA = 25 °C. This low leakage ensures minimal power loss in always-on circuits such as battery-backed sensors or low-quiescent current power monitors - preserving battery life and avoiding false triggering in high-impedance signal paths.
Can the SMAJ8.0AHE3/61 be used in bidirectional configurations?
No, the SMAJ8.0AHE3/61 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the SMAJ8.0CA variant (e.g., SMAJ8.0CAHE3/61), which provides symmetrical clamping in both polarities and omits the polarity band. Using SMAJ8.0AHE3/61 in reverse-biased AC applications risks permanent failure due to forward conduction during negative half-cycles.
SMAJ8.0AHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ8.0AHE3/61 FAQ
1.How can I place an order for SMAJ8.0AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ8.0AHE3/61 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 SMAJ8.0AHE3/61 reliable?
The price and inventory of SMAJ8.0AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ8.0AHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ8.0AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ8.0AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ8.0AHE3/61?
SMAJ8.0AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ8.0AHE3/61 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 SMAJ8.0AHE3/61?
For technical support, including SMAJ8.0AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ8.0AHE3/61 requirements.
6.How does Aetrix verify that SMAJ8.0AHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ8.0AHE3/61 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 SMAJ8.0AHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ8.0AHE3/61?
All SMAJ8.0AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ8.0AHE3/61, 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 SMAJ8.0AHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ8.0AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ8.0AHE3/61 Tags
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