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Vishay General Semiconductor - Diodes Division SMAJ6.0AHM3_A/I
- Part No.:
- SMAJ6.0AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0AHM3_A/I.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,332
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Product details
Overview
SMAJ6.0AHM3_A/I 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 6.0 V stand-off voltage (VWM), 6.67–7.37 V breakdown voltage (VBR) at 10 mA, 400 W peak pulse power (10/1000 μs), and clamps to ≤10.3 V at 38.8 A peak surge current - ideal for protecting MOSFET gates and microcontroller I/O in automotive body electronics.
For engineers reviewing the SMAJ6.0AHM3_A/I datasheet, SMAJ6.0AHM3_A/I pinout, SMAJ6.0AHM3_A/I application, or SMAJ6.0AHM3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction (HM3 suffix), low clamping ratio (VC/VBR ≈ 1.45), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, activated when reverse voltage exceeds VBR; it exhibits <1 ps response time and low incremental surge resistance (≈0.27 Ω derived from ΔV/ΔI = (10.3 V − 6.0 V)/38.8 A). Its glass-passivated junction ensures stable leakage (<800 μA at VWM) and robust ESD immunity per IEC 61000-4-2 Level 4.
Thermally, it delivers 3.3 W steady-state power dissipation at TA = 50 °C with RθJA = 120 °C/W and RθJL = 30 °C/W, enabling reliable operation up to TJ = 150 °C. The cathode band marking confirms polarity for correct PCB orientation in DC-biased protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 6.0 V - maximum continuous reverse voltage before significant leakage; sets operating margin below VBR in 5 V rail protection. |
| VBR (Breakdown Voltage) | 6.67–7.37 V at 10 mA - defines precise avalanche onset; tight 10.4% tolerance enables predictable clamping threshold. |
| VC (Clamping Voltage) | ≤10.3 V at IPPM = 38.8 A - limits transient overvoltage seen by downstream ICs; clamping ratio = 1.45×VWM. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 μs waveform) - sustains high-energy surges like ISO 7637-2 Pulse 1/2a without degradation. |
| IFSM (Surge Current) | 40 A (8.3 ms half-sine) - withstands repetitive load-dump events in 12 V automotive systems. |
| TJmax | 150 °C - supports under-hood deployment; qualified per AEC-Q101 for automotive-grade reliability. |
| Package | SMA (DO-214AC) - 0.208" × 0.157" footprint; MSL Level 1 (260 °C reflow compatible); matte tin leads meet J-STD-002. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, single-axis asymmetric case with cathode band marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); recommended pad layout: 5.0 mm × 5.0 mm copper per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to GND or lowest potential; completes conduction path during transient clamp. |
| Cathode | Protected line input | Connected to line being protected (e.g., 5 V supply rail); band-marked end accepts positive surge relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including body control modules and sensor interfaces; meets stress test requirements for temperature cycling, HTRB, and uHAST. |
| Halogen-free & RoHS-compliant (HM3) | Meets JEDEC J-STD-204 and IEC 61249-2-21; eliminates brominated flame retardants while maintaining UL 94 V-0 flammability rating. |
| 400 W peak pulse power | Handles ISO 16750-2 Load Dump surges (up to 35 V, 100 ms) when combined with upstream series impedance in 12 V systems. |
| Low clamping voltage (10.3 V) | Ensures safe operation of 5 V logic ICs (e.g., CAN transceivers, MCU GPIO) during 30 A transients without latch-up or damage. |
| Glass-passivated junction | Provides stable VBR drift <0.059 %/°C and leakage <800 μA at 25 °C, critical for long-term reliability in industrial environments. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting 5 V microcontroller I/O pins from inductive kickback generated by relay coils and solenoid drivers in BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between MCU pin and connector; responds within <1 ps to suppress >1 kV transients. Use Value: Prevents permanent gate oxide damage to MCU GPIO by limiting voltage to ≤10.3 V during 38.8 A surges, extending field lifetime beyond 15 years. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers against wiring faults and EFT bursts. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at connector entry point; clamps fast-rising edges (tr < 1 ns) before reaching optocoupler input stage. Use Value: Maintains signal integrity by holding input voltage below optocoupler breakdown (typically 30 V), eliminating false triggering during 4 kV EFT tests. |
| USB Port ESD Protection | DC-DC Converter Feedback Path |
|
Use Scenario: Secondary-level ESD protection on USB 2.0 data lines (D+/D−) in automotive infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 200 pF at 0 V) placed after primary polymer fuse; absorbs ±15 kV contact discharge per IEC 61000-4-2. Use Value: Limits voltage excursion to <12 V during ESD event, preserving signal rise/fall times (<1 ns degradation) and ensuring USB 2.0 eye diagram compliance. |
Use Scenario: Stabilizing feedback voltage node of isolated 5 V → 3.3 V flyback converter powering safety-critical sensors. IC Role / Device Role / Timing Role: Precision-clamp TVS across FB resistor divider; prevents regulator latch-up during 100 V/10 μs surge coupling via transformer parasitics. Use Value: Guarantees output regulation remains within ±2% during transients by clamping FB node to ≤6.5 V, avoiding erroneous overvoltage shutdown. |
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 | RoHS-compliant but not halogen-free; commercial grade (no AEC-Q101 qualification); same VWM, VBR, and PPPM. | Limited to non-automotive industrial use; lacks automotive reliability validation and high-temp bias testing. | Select when cost sensitivity outweighs automotive qualification requirements and halogen-free mandate. |
| SMCJ6.0A-HM3_A/I | Same HM3 suffix, but SMC (DO-214AB) package; 1500 W PPPM; larger 7.11 mm × 6.22 mm footprint; higher IPPM = 139 A. | Used where higher surge energy (e.g., ISO 7637-2 Pulse 5a) must be absorbed without derating; requires PCB layout change. | Choose for enhanced ruggedness in engine bay ECUs; avoid if space-constrained or targeting SMA footprint compatibility. |
Compared with SMAJ6.0AHM3_A/I, the E3/61 variant trades automotive qualification for lower cost in benign environments, while the SMCJ6.0A-HM3_A/I offers 3.75× higher surge capacity at the expense of board area - making SMAJ6.0AHM3_A/I optimal for space-limited AEC-Q101-compliant 5 V rail protection.
Availability
SMAJ6.0AHM3_A/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and USB interface hardening requiring stable component supply and full traceability.
Supply support for SMAJ6.0AHM3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMAJ series targets cost-sensitive yet reliability-critical transient suppression, with HM3 variants specifically engineered to meet automotive halogen-free and AEC-Q101 requirements without sacrificing clamping performance.
FAQ
What is the maximum clamping voltage of SMAJ6.0AHM3_A/I at its rated peak pulse current?
The SMAJ6.0AHM3_A/I clamps to a maximum of 10.3 V at its rated peak pulse current of 38.8 A (10/1000 μs waveform). This value is measured under standardized test conditions and ensures downstream 5 V ICs remain within absolute maximum ratings during surge events. The clamping voltage is guaranteed across the full operating temperature range (−55 °C to +150 °C) per Vishay's characterization data.
Is SMAJ6.0AHM3_A/I suitable for bidirectional transient suppression?
No, SMAJ6.0AHM3_A/I is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only when the cathode is biased positively relative to the anode. For bidirectional protection (e.g., AC lines or differential pairs), the "CA" variant SMAJ6.0CAHM3_A/I must be used - it has symmetric breakdown in both directions and no polarity marking.
Does SMAJ6.0AHM3_A/I meet automotive qualification standards?
Yes, SMAJ6.0AHM3_A/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and Vishay's documentation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and unbiased highly accelerated stress test (uHAST) to ensure reliability in automotive under-hood and cabin environments.
What is the thermal resistance from junction to ambient for SMAJ6.0AHM3_A/I?
The typical thermal resistance from junction to ambient (RθJA) for SMAJ6.0AHM3_A/I is 120 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air convection and defines the temperature rise above ambient at 3.3 W steady-state power dissipation - critical for thermal design in sealed enclosures.
How does the HM3 suffix differ from the E3 suffix in SMAJ6.0A variants?
The HM3 suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification, while E3 indicates RoHS-compliance only (no halogen-free claim or automotive qualification). Both share identical electrical specs, but HM3 parts meet stricter automotive material requirements and are tested to extended reliability standards - essential for Tier 1 automotive supply chains.
SMAJ6.0AHM3_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:
- 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/I FAQ
1.How can I place an order for SMAJ6.0AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0AHM3_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 SMAJ6.0AHM3_A/I reliable?
The price and inventory of SMAJ6.0AHM3_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 SMAJ6.0AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMAJ6.0AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0AHM3_A/I?
SMAJ6.0AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0AHM3_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 SMAJ6.0AHM3_A/I?
For technical support, including SMAJ6.0AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0AHM3_A/I requirements.
6.How does Aetrix verify that SMAJ6.0AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0AHM3_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 SMAJ6.0AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMAJ6.0AHM3_A/I?
All SMAJ6.0AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0AHM3_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 SMAJ6.0AHM3_A/I part is unused and in its original packaging.
Return procedure for SMAJ6.0AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.0AHM3_A/I Tags
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