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Vishay General Semiconductor - Diodes Division SMAJ6.0AHM3_A/H
- Part No.:
- SMAJ6.0AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0AHM3_A/H.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,169
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Product details
Overview
SMAJ6.0AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping fast-rising ESD and surge transients on power 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 - ideal for protecting MOSFET gates and microcontroller I/O in automotive sensor modules.
For engineers reviewing the SMAJ6.0AHM3_A/H datasheet, SMAJ6.0AHM3_A/H pinout, SMAJ6.0AHM3_A/H application, or SMAJ6.0AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction (HM3 suffix), low 0.059 %/°C VBR temperature coefficient, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation, it remains high-impedance until transient voltage exceeds VWM (6.0 V), then avalanches to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<800 μA at VWM).
Designed for repetitive surge immunity, SMAJ6.0AHM3_A/H delivers 400 W peak pulse power (derated to 300 W above 78 V), supports 40 A non-repetitive forward surge (8.3 ms half-sine), and maintains thermal stability with RθJA = 120 °C/W and RθJL = 30 °C/W - enabling reliable operation up to TJ = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below IC supply rails. |
| VBR (min/max) | 6.67 V / 7.37 V at 10 mA - Confirmed avalanche onset range; ensures consistent triggering across temperature and unit variation. |
| VC @ IPPM | 10.3 V at 38.8 A - Clamped voltage during worst-case 10/1000 μs surge; guarantees downstream logic stays below absolute max ratings. |
| PPPM | 400 W - Peak pulse power handling capability; sufficient for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges. |
| IFSM | 40 A - Single half-sine surge current rating (8.3 ms); supports inductive load switching events in automotive power circuits. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with cathode band marking; compatible with JEDEC MS-012AC footprint. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C peak reflow), UL 94 V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; defines polarity-sensitive placement on PCB. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential side (e.g., VCC rail); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114. |
| Halogen-free & RoHS-compliant (HM3) | Meets IEC 61249-2-21 and JESD201 Class 2 whisker resistance; suitable for green manufacturing and export compliance. |
| 400 W peak pulse power (10/1000 μs) | Clamps high-energy transients from inductive loads (e.g., solenoids, relays) without degradation over 1000+ pulses. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes let-through voltage stress on protected ICs - critical for 3.3 V and 5 V logic interfaces. |
| Fast response time (<1 ps) | Activates before most semiconductor junctions fail; provides sub-nanosecond protection against ESD (IEC 61000-4-2 ±8 kV contact). |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and ground, absorbing transients before they reach sensitive analog front-end or communication ICs. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while holding clamped voltage below 10.3 V - preventing latch-up or gate oxide damage in 5 V-rated receivers. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers subjected to field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-clamp TVS installed across input terminals (signal-to-ground), shunting surge energy away from optocoupler input LEDs and series current-limiting resistors. Use Value: Enables robust 24 V DC input stage design with 400 W surge handling - eliminating need for external MOVs or gas discharge tubes in DIN-rail mounted controllers. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and USB PD chargers where 5 V/9 V/12 V rails are vulnerable to capacitor discharge or feedback loop faults. IC Role / Device Role / Timing Role: Unidirectional TVS connected from regulated output to ground, clamping fault-induced spikes before they damage downstream USB-C controller or battery management ICs. Use Value: Limits transient overshoot to ≤10.3 V during 40 A surge events - preserving compliance with USB IF electrical specifications and preventing brownout resets. |
Use Scenario: Primary protection for Ethernet PHY power pins and auxiliary bias supplies in VoIP phones and DSL modems exposed to lightning-induced surges on PoE or AC adapter lines. IC Role / Device Role / Timing Role: Low-capacitance TVS placed on 3.3 V or 5 V bias rails feeding Ethernet magnetics and PHY ICs, providing fast clamping without signal distortion. Use Value: Delivers 400 W surge immunity while adding only 0.059 %/°C VBR drift - ensuring stable protection across -40 °C to +85 °C ambient operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0AHE3_A/H | Same electrical specs, but RoHS-compliant (E3) without halogen-free certification; no JESD201 Class 2 whisker test. | Approved for commercial/industrial use; not certified for automotive AEC-Q101 or halogen-free manufacturing requirements. | Select when halogen-free content and automotive qualification are not required; lower cost alternative for non-automotive designs. |
| SMAJ6.0A-M3/61 (Mouser/Digi-Key) | Identical HM3 material specification and AEC-Q101 qualification; differs only in packaging format (61 = 7" reel, 1800 pcs). | No functional difference; same thermal, electrical, and mechanical performance; identical footprint and soldering profile. | Choose based on procurement preference - SMAJ6.0AHM3_A/H uses "H" package code and "A/H" revision; both are drop-in replacements. |
Compared with SMAJ6.0AHE3_A/H, SMAJ6.0AHM3_A/H adds halogen-free compliance and whisker resistance for automotive Tier-1 supply chains; compared with SMAJ6.0A-M3/61, it shares identical die and qualification but uses Vishay's internal revision coding ("A/H") for traceability in OEM BOMs.
Availability
SMAJ6.0AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and consumer power adapter designs requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMAJ6.0AHM3_A/H 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, efficiency, and application-specific optimization.
The SMAJ series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for fast clamping, low leakage, and long-term stability under repetitive surge stress.
FAQ
What is the clamping voltage of SMAJ6.0AHM3_A/H at its rated peak pulse current?
The SMAJ6.0AHM3_A/H has a maximum clamping voltage (VC) of 10.3 V at its rated peak pulse current (IPPM) of 38.8 A, measured using the standardized 10/1000 μs double-exponential surge waveform. This value ensures that protected downstream components - such as 5 V microcontrollers or CAN transceivers - remain within their absolute maximum voltage ratings during transient events. The clamping performance is guaranteed across the full operating temperature range and validated per AEC-Q101 stress tests.
Is SMAJ6.0AHM3_A/H qualified for automotive applications?
Yes, SMAJ6.0AHM3_A/H is AEC-Q101 qualified, meaning it has passed rigorous stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥ 8 kV). The "HM3" suffix explicitly denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance - meeting Tier-1 automotive supply chain requirements. Its +150 °C maximum junction temperature and stable VBR temperature coefficient (0.059 %/°C) further support under-hood deployment.
How does the SMAJ6.0AHM3_A/H differ from the SMAJ6.0A-E3 variant?
SMAJ6.0AHM3_A/H and SMAJ6.0A-E3 share identical electrical parameters (VWM, VBR, VC, PPPM) and package (SMA), but differ in material compliance: HM3 is halogen-free and passes JESD201 Class 2 whisker testing, while E3 is RoHS-compliant but not halogen-free. SMAJ6.0AHM3_A/H carries AEC-Q101 qualification; SMAJ6.0A-E3 does not. Both are manufactured by Vishay and pin-compatible, but only SMAJ6.0AHM3_A/H satisfies full automotive PPAP documentation requirements.
What is the thermal resistance of SMAJ6.0AHM3_A/H, and how does it affect layout?
SMAJ6.0AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W, measured on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ +150 °C under 3.3 W steady-state dissipation, PCB layout must provide adequate copper area and avoid thermal bottlenecks near the SMA pads. Use of internal ground planes and thermal vias beneath the cathode/anode pads significantly improves heat dissipation in high-duty-cycle surge environments.
Can SMAJ6.0AHM3_A/H be used in bidirectional configurations?
No, SMAJ6.0AHM3_A/H is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and cathode band marking. It conducts only in reverse breakdown - forward conduction is limited to ~3.5 V at 25 A (per datasheet note). For bidirectional protection (e.g., AC lines or differential buses), use the SMAJ6.0CA variant instead. Substituting SMAJ6.0AHM3_A/H in bidirectional roles risks forward conduction failure or inadequate clamping during negative transients.
SMAJ6.0AHM3_A/H 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ6.0AHM3_A/H FAQ
1.How can I place an order for SMAJ6.0AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0AHM3_A/H 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 SMAJ6.0AHM3_A/H reliable?
The price and inventory of SMAJ6.0AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMAJ6.0AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0AHM3_A/H?
SMAJ6.0AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0AHM3_A/H 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 SMAJ6.0AHM3_A/H?
For technical support, including SMAJ6.0AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0AHM3_A/H requirements.
6.How does Aetrix verify that SMAJ6.0AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0AHM3_A/H 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 SMAJ6.0AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMAJ6.0AHM3_A/H?
All SMAJ6.0AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0AHM3_A/H, 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 SMAJ6.0AHM3_A/H part is unused and in its original packaging.
Return procedure for SMAJ6.0AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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