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Vishay General Semiconductor - Diodes Division SMAJ6.0AHE3_A/I
- Part No.:
- SMAJ6.0AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0AHE3_A/I.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ6.0AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection on DC power rails and signal lines. It features a 6.0 V stand-off voltage (VWM), 6.67–7.37 V breakdown voltage (VBR) at 10 mA, 10.3 V maximum clamping voltage (VC) at 38.8 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive ECUs, industrial sensor interfaces, and USB power input stages.
For engineers reviewing the SMAJ6.0AHE3_A/I datasheet, SMAJ6.0AHE3_A/I pinout, SMAJ6.0AHE3_A/I application, or SMAJ6.0AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, SMA (DO-214AC) surface-mount package, unidirectional polarity with cathode band marking, and compliance with UL 497B for surge protector classification.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM (6.0 V) and rapidly transitions to low-impedance conduction above VBR to limit transient voltages. Its glass-passivated junction ensures stable leakage (<800 μA at VWM) and fast response time (<1.0 ps), critical for protecting sensitive MOSFET gates and microcontroller I/O pins against ESD and inductive switching spikes.
Thermal performance is defined by RθJA = 120 °C/W and RθJL = 30 °C/W, supporting operation up to TJ = +150 °C. The device meets MSL Level 1 per J-STD-020 and is rated for 40 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), enabling robust handling of repetitive load-dump transients in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before clamping begins; sets system rail compatibility for 5 V logic and 6 V analog supplies. |
| VBR (min/max) | 6.67 V / 7.37 V at 10 mA - Confirmed breakdown threshold range defining turn-on consistency across production lots. |
| VC @ IPPM | 10.3 V at 38.8 A - Clamped voltage during 10/1000 μs surge; ensures downstream ICs see <10.3 V under worst-case 400 W transient. |
| PPPM | 400 W - Peak pulse power handling capability with standard 10/1000 μs waveform; validates protection level per ISO 7637-2 Pulse 1 & 2. |
| ID @ VWM | ≤800 μA - Reverse leakage at stand-off voltage; low enough to avoid measurable power loss or bias shift in high-impedance sensor circuits. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports under-hood automotive placement without derating in ambient ≤125 °C environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TCT, and ESD testing; required for engine control, body electronics, and ADAS modules. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads. Cathode identified by black band; anode is unmarked end. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., VBUS, CAN_H); conducts surge current to ground when voltage exceeds VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, infotainment, and ADAS sensors - eliminates need for additional qualification testing. |
| 400 W peak pulse power | Handles ISO 7637-2 Pulse 1 (−150 V/2 Ω) and Pulse 2a (−100 V/50 Ω) without failure when mounted per recommended 0.2" × 0.2" copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping - critical for protecting 5 V-tolerant I/O pins with tight VIH/VIL margins. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with automated pick-and-place and lead-free soldering (260 °C peak). |
| Glass passivated junction | Ensures stable VBR and low leakage over temperature and lifetime - avoids parameter drift in industrial temperature cycling environments. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 12 V supply inputs of body control modules (BCM) against load dump transients up to 35 V. IC Role / Device Role / Timing Role: Primary clamping element placed between fuse output and DC-DC converter input; responds within picoseconds to suppress >200 V spikes. Use Value: Limits voltage seen by downstream regulators to ≤10.3 V, preventing latch-up or permanent damage to 3.3 V/5 V LDOs and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure sensors in factory automation PLCs from ESD and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional shunt clamp on 0–5 V ratiometric output line; placed adjacent to connector interface. Use Value: Maintains signal integrity by clamping transients to <10.3 V while adding <1 nA leakage at 5 V - no measurable offset or gain error. |
| USB Type-A VBUS Surge Suppression | Microcontroller GPIO ESD Hardening |
Use Scenario: Safeguarding VBUS line of legacy USB host ports against hot-plug surges and cable-induced transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5 V rail upstream of USB power switch; sized for 400 W single-event immunity. Use Value: Prevents overvoltage damage to USB controller ICs during insertion events while maintaining <800 μA quiescent leakage at 5 V. |
Use Scenario: Adding board-level ESD protection to STM32 or PIC microcontroller I/O pins exposed to user-accessible buttons or LEDs. IC Role / Device Role / Timing Role: Localized unidirectional clamp between GPIO and ground; placed within 5 mm of pad per IEC 61000-4-2 layout guidelines. Use Value: Absorbs ±8 kV contact / ±15 kV air discharge per IEC 61000-4-2 without latch-up, leveraging sub-ns response and low VC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0A-E3/61 | Same electrical specs and SMA package; RoHS-compliant commercial grade (non-AEC-Q101). | Lacks automotive qualification; suitable for consumer, computing, and non-safety-critical industrial use. | Select when AEC-Q101 is not mandated and cost optimization is prioritized. |
| SMBJ6.0AHE3_A/I | Higher 600 W PPPM rating; SMB (DO-214AA) package with larger thermal mass and 1.5× higher IPPM (53.3 A). | Better suited for higher-energy transients (e.g., ISO 16750-2 long-duration pulses); requires larger PCB footprint. | Choose when system-level testing reveals marginal margin with SMAJ6.0AHE3_A/I clamping performance. |
Compared with SMAJ6.0AHE3_A/I, SMAJ6.0A-E3/61 offers identical protection performance without automotive qualification, while SMBJ6.0AHE3_A/I delivers higher surge capacity in a larger package - enabling trade-offs between board space, qualification requirements, and transient energy severity.
Availability
SMAJ6.0AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and USB power input protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMAJ6.0AHE3_A/I 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 and application-specific validation.
The SMAJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where consistent clamping, low leakage, and AEC-Q101 qualification are mandatory.
FAQ
What is the clamping voltage of SMAJ6.0AHE3_A/I at its rated peak pulse current?
The SMAJ6.0AHE3_A/I has a maximum clamping voltage (VC) of 10.3 V at its rated peak pulse current (IPPM) of 38.8 A, measured using the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events. The SMAJ6.0AHE3_A/I maintains this clamping performance without degradation under repetitive surge conditions when mounted per the recommended 0.2" × 0.2" copper pad layout.
Is SMAJ6.0AHE3_A/I suitable for bidirectional signal line protection?
No, SMAJ6.0AHE3_A/I is a unidirectional TVS diode and must not be used on AC or bidirectional signal lines such as RS-485, CAN, or audio paths. Its cathode band marks the polarity-sensitive terminal, and reverse-bias operation beyond VWM will cause conduction and potential failure. For bidirectional protection, select the SMAJ6.0CAHE3_A/I variant - which shares the same package and AEC-Q101 qualification but provides symmetrical clamping in both directions.
Does SMAJ6.0AHE3_A/I meet UL recognition requirements?
Yes, SMAJ6.0AHE3_A/I is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional variants, compliant with UL 497B for telecommunications and signal line protectors. This recognition confirms its suitability for use in safety-critical surge protection assemblies and validates its construction, flammability (UL 94 V-0), and electrical performance per standardized test protocols - essential for end-equipment certification in North America.
What is the thermal resistance from junction to ambient for SMAJ6.0AHE3_A/I?
The typical thermal resistance from junction to ambient (RθJA) for SMAJ6.0AHE3_A/I is 120 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value enables accurate junction temperature estimation under steady-state power dissipation (PD = 3.3 W) and transient conditions. For improved thermal performance in high-power applications, designers may enhance copper area or add thermal vias - reducing effective RθJA and extending safe operating time during repetitive surges.
How does the AEC-Q101 qualification of SMAJ6.0AHE3_A/I impact its use in automotive designs?
The AEC-Q101 qualification of SMAJ6.0AHE3_A/I certifies it for use in automotive electronic systems including powertrain, chassis, and body electronics - having passed stress tests for high-temperature operating life (HTOL), temperature cycling (TCT), and ESD (HBM/MM). This eliminates the need for additional component-level qualification by Tier 1 suppliers and ensures long-term reliability under vibration, thermal shock, and humidity exposure. The SMAJ6.0AHE3_A/I is explicitly approved for engine bay and cabin-mounted modules where ambient temperatures reach 125 °C and transients exceed 100 V.
SMAJ6.0AHE3_A/I 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):
- 6V
- Voltage - Breakdown (Min):
- 6.67V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 38.8A
- 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)
SMAJ6.0AHE3_A/I FAQ
1.How can I place an order for SMAJ6.0AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0AHE3_A/I 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 SMAJ6.0AHE3_A/I reliable?
The price and inventory of SMAJ6.0AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMAJ6.0AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0AHE3_A/I?
SMAJ6.0AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0AHE3_A/I 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 SMAJ6.0AHE3_A/I?
For technical support, including SMAJ6.0AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0AHE3_A/I requirements.
6.How does Aetrix verify that SMAJ6.0AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0AHE3_A/I 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 SMAJ6.0AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMAJ6.0AHE3_A/I?
All SMAJ6.0AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0AHE3_A/I, 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 SMAJ6.0AHE3_A/I part is unused and in its original packaging.
Return procedure for SMAJ6.0AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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