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Vishay General Semiconductor - Diodes Division SMAJ6.0AHM3/I
- Part No.:
- SMAJ6.0AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0AHM3/I.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,589
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Product details
Overview
SMAJ6.0AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. 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 - deployed on power rails and signal lines of automotive ECUs, industrial sensor interfaces, and consumer USB/UART ports.
For engineers reviewing the SMAJ6.0AHM3/I datasheet, SMAJ6.0AHM3/I pinout, SMAJ6.0AHM3/I application, or SMAJ6.0AHM3/I equivalent, this page delivers verified electrical specs, polarity-aware package layout, AEC-Q101 qualification status, thermal resistance data (RθJA = 120 °C/W), and direct alternatives for automotive-grade transient protection design-in.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping device across DC supply rails or low-voltage signal paths. Its glass-passivated junction enables fast response (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 μs transients up to 400 W (derated above 78 V). The cathode-band marking confirms polarity for correct orientation during PCB placement.
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and JESD201 Class 2 whisker resistance. The halogen-free, RoHS-compliant HM3 suffix indicates compliance with automotive reliability requirements per AEC-Q101 - validated for operation from −55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin for reliable standby operation. |
| VBR (min/max) | 6.67 V / 7.37 V at 10 mA - Confirmed breakdown threshold range ensures predictable turn-on without premature conduction during normal operation. |
| VC @ IPPM | ≤10.3 V at 38.8 A - Clamping voltage limits downstream IC stress during 400 W surge events; critical for protecting 5 V logic interfaces. |
| IPPM | 38.8 A - Peak surge current capability with 10/1000 μs waveform defines maximum transient energy absorption capacity. |
| PPPM | 400 W - Peak pulse power rating determines survivability against common lightning and inductive load-switching threats. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance informs PCB copper pad sizing (0.2" × 0.2") for sustained power dissipation. |
| TJmax | +150 °C - Maximum junction temperature supports operation in under-hood automotive environments and sealed industrial enclosures. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, MSL Level 1. Cathode indicated by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path when cathode is tied to protected line. |
| Cathode | Protected line connection | Marked with band; connects to supply rail or signal line requiring overvoltage protection - conducts surge current to ground during transient. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails. |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surge events on 12 V/24 V systems without degradation. |
| Glass passivated junction | Ensures stable VBR and low leakage (<800 μA at VWM) over temperature and lifetime. |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns - no baking required prior to SMT. |
| Halogen-free & RoHS | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1). |
Applications
| Automotive Body Control Module | Industrial CAN Transceiver Protection |
|---|---|
Use Scenario: Protecting 12 V power input and LIN bus lines in door module ECUs exposed to load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VBAT and ground, triggered within <1 ns to limit voltage to ≤10.3 V during 38.8 A surge. Use Value: Prevents latch-up or permanent damage to MCU and LIN transceiver ICs during ISO 7637-2 Pulse 5a (load dump) events. |
Use Scenario: Safeguarding CANH/CANL pins of isolated transceivers in factory automation gateways subjected to ESD and cable discharge. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices clamp differential and common-mode surges on each CAN line relative to ground. Use Value: Maintains CAN bus integrity by limiting transient overshoot below transceiver absolute maximum ratings (±40 V) while preserving signal rise/fall times. |
| Consumer USB-C Power Delivery | Medical Sensor Signal Conditioning |
Use Scenario: Overvoltage protection on VBUS line of USB-C receptacles handling up to 20 V PD negotiation, vulnerable to hot-plug and adapter faults. IC Role / Device Role / Timing Role: Primary clamping element on 5–20 V input rail; activated before internal PMIC OVP circuits respond. Use Value: Absorbs 400 W surge energy without sacrificing USB-C connector size constraints - enabled by compact SMA footprint and low Rsurge. |
Use Scenario: Shielding analog front-end inputs of portable ECG or pulse oximeter modules from ESD events during clinical handling. IC Role / Device Role / Timing Role: Low-capacitance (typ. 1000 pF at 0 V) unidirectional TVS placed ahead of instrumentation amplifier inputs. Use Value: Limits ESD-induced offset shift and saturation recovery time while maintaining signal bandwidth >10 kHz for physiological waveform fidelity. |
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/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial/industrial use only; not approved for automotive production. | Select when halogen-free content and automotive qualification are not required - lower cost alternative for non-automotive designs. |
| SMAJ6.0A-M3/61 | Same electrical specs and package; uses 7" tape-and-reel (1800 pcs) vs. 13" reel (7500 pcs) of HM3/I. | No functional difference; packaging optimized for high-volume SMT lines with smaller feeder reels. | Choose for compatibility with legacy 7" pick-and-place feeders where reel capacity and changeover frequency are prioritized. |
Compared with SMAJ6.0AHM3/I, SMAJ6.0AHE3/I omits halogen-free and AEC-Q101 compliance - reducing cost but excluding automotive programs; SMAJ6.0A-M3/61 offers identical performance in a different reel format, enabling flexibility in manufacturing logistics without electrical trade-offs.
Availability
SMAJ6.0AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and consumer USB power delivery systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified transient protection.
Supply support for SMAJ6.0AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The SMAJ series was engineered for robust, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated at the component level.
FAQ
What is the clamping voltage of SMAJ6.0AHM3/I at its rated peak pulse current?
The SMAJ6.0AHM3/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 defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings. The SMAJ6.0AHM3/I achieves this with low incremental surge resistance and fast response, making it suitable for 5 V and 3.3 V system protection.
Is SMAJ6.0AHM3/I qualified for automotive applications?
Yes, SMAJ6.0AHM3/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" (halogen-free, RoHS-compliant, AEC-Q101 qualified) and documented in the official datasheet revision 09-Jan-2024. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - validating its use in engine compartments, ADAS modules, and body control units where reliability under thermal and vibration stress is mandatory.
What does the "HM3" suffix mean in SMAJ6.0AHM3/I?
The "HM3" suffix in SMAJ6.0AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., "E3") and confirms compliance with automotive material standards such as GMW3172 and Ford WSS-M99P9999-A1. The "I" indicates 13-inch tape-and-reel packaging (7500 units), supporting high-volume SMT assembly with extended feeder run time.
How does SMAJ6.0AHM3/I differ from bidirectional SMAJ6.0CA variants?
SMAJ6.0AHM3/I is unidirectional, with a defined cathode band and forward conduction capability - intended for DC rail protection where polarity is fixed. In contrast, SMAJ6.0CA is bidirectional, symmetric in both directions, and lacks polarity marking; it suits AC-coupled or differential signal lines like RS-485 or Ethernet. Their VBR, VC, and PPPM values differ slightly due to structural asymmetry, and SMAJ6.0AHM3/I cannot replace SMAJ6.0CA in AC applications without circuit redesign.
What is the thermal resistance of SMAJ6.0AHM3/I, and how does it affect PCB layout?
SMAJ6.0AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly impacts safe power dissipation: for example, at 3.3 W steady-state power (PD), junction temperature rise would be ~396 °C - exceeding rating - confirming that SMAJ6.0AHM3/I is intended for transient-only duty, not continuous dissipation. Layout must follow Vishay's recommended pad dimensions to maintain specified surge capability.
SMAJ6.0AHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for SMAJ6.0AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0AHM3/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/I reliable?
The price and inventory of SMAJ6.0AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SMAJ6.0AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0AHM3/I?
SMAJ6.0AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0AHM3/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/I?
For technical support, including SMAJ6.0AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0AHM3/I requirements.
6.How does Aetrix verify that SMAJ6.0AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SMAJ6.0AHM3/I?
All SMAJ6.0AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0AHM3/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/I part is unused and in its original packaging.
Return procedure for SMAJ6.0AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.0AHM3/I Tags
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