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Vishay General Semiconductor - Diodes Division SMAJ6.0A-M3/5A
- Part No.:
- SMAJ6.0A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0A-M3/5A.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ6.0A-M3/5A 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 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 - suitable for protecting MOSFET gates, microcontroller I/O, and automotive sensor interfaces.
For engineers reviewing the SMAJ6.0A-M3/5A datasheet, SMAJ6.0A-M3/5A pinout, SMAJ6.0A-M3/5A application, or SMAJ6.0A-M3/5A equivalent, key selection criteria include unidirectional polarity, 120 °C/W junction-to-ambient thermal resistance, halogen-free RoHS-compliant construction (M3 suffix), and AEC-Q101 qualification eligibility via HM3 variant - critical for industrial power supply input stages and automotive body control modules.
Technical Context
This TVS diode operates as a voltage-clamping protection device that remains high-impedance below VWM = 6.0 V and rapidly transitions to low-impedance conduction above VBR (min 6.67 V), limiting transient energy to safe levels. Its glass-passivated junction ensures stable leakage (<800 μA at VWM) and repeatable clamping performance across temperature.
The SMAJ6.0A-M3/5A delivers 38.8 A peak pulse current (IPPM) under standardized 10/1000 μs surge conditions, with clamping voltage held to ≤10.3 V - enabling robust protection of 5 V logic circuits without overstressing downstream components. Thermal design must account for RθJA = 120 °C/W and TJ(max) = 150 °C under derated power conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before significant leakage begins; sets upper limit for protected circuit's nominal rail. |
| VBR (min/max) | 6.67 V / 7.37 V at 10 mA - Confirmed breakdown range defining turn-on threshold; ensures reliable triggering above system noise margin. |
| VC @ IPPM | 10.3 V at 38.8 A - Clamped voltage during worst-case 400 W surge; guarantees downstream ICs see <10.3 V during transient events. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity. |
| IFSM | 40 A - Non-repetitive forward surge rating (8.3 ms half-sine); validates capability to survive accidental DC overvoltage or latch-up events. |
| TJ(max) | +150 °C - Maximum junction temperature; requires thermal pad layout per DO-214AC spec to sustain 3.3 W steady-state dissipation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode (unbanded end) | Reference node | Typically tied to ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables compliance with IEC 61000-4-5 surge immunity requirements up to Level 3 in compact SMA footprint. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during transients - critical for safeguarding 5 V logic and USB interface ICs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing flow. |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills environmental compliance mandates for industrial and automotive electronics without compromising surge performance. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from load-dump and inductive switching spikes in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between LIN line and ground, triggered within <1 ns to clamp transients to ≤10.3 V. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers during 12 V battery system surges up to 400 W. | Use Scenario: Safeguarding 24 V digital input channels against field-wiring induced transients in factory automation controllers. IC Role / Device Role / Timing Role: Standoff protection element mounted directly at connector entry point, shunting surge energy before reaching optocoupler input stage. Use Value: Maintains functional safety integrity by limiting input voltage to <10.3 V during 1 kV/2 Ω IEC 61000-4-5 surges - preserving isolation barrier reliability. |
| Consumer Power Adapter Output | Automotive Camera Power Rail |
Use Scenario: Secondary-side overvoltage suppression on 5 V USB-C PD adapter outputs exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Fast-response TVS placed between VBUS and GND, activated before internal LDO or USB switch sustains damage. Use Value: Ensures <10.3 V clamping during ±8 kV ESD contact discharge (IEC 61000-4-2), preventing brownout or reset of connected devices. | Use Scenario: Front-end protection of 12 V camera module power input subjected to ISO 7637-2 pulse 1/2a/5a in ADAS systems. IC Role / Device Role / Timing Role: Primary surge limiter upstream of DC/DC converter, absorbing up to 400 W pulses without degradation. Use Value: Guarantees uninterrupted operation by holding rail voltage within 12 V ±10 % during 100 V/50 Ω load-dump transients. |
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-E3/5A | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3). | No AEC-Q101 qualification path; limited to commercial-grade industrial use. | Select when halogen-free requirement is waived and cost optimization is prioritized. |
| SMAJ6.0CA-M3/5A | Bidirectional variant; symmetric VBR = 6.67–7.37 V in both directions; same VC, PPPM, and package. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN) where polarity reversal occurs. | Choose only if bidirectional clamping is needed; unidirectional SMAJ6.0A-M3/5A offers lower leakage in DC applications. |
Compared with SMAJ6.0A-E3/5A, the M3 version adds halogen-free compliance essential for automotive Tier 1 sourcing, while SMAJ6.0CA-M3/5A trades unidirectional leakage advantage (800 μA max) for dual-polarity protection - making SMAJ6.0A-M3/5A optimal for fixed-polarity 5 V rail protection where leakage and material compliance are jointly critical.
Availability
SMAJ6.0A-M3/5A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC inputs, and consumer power adapter designs requiring stable component supply, halogen-free compliance, and IEC 61000-4-5 surge immunity.
Supply support for SMAJ6.0A-M3/5A 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 performance.
The SMAJ series was developed for high-energy transient suppression in space-constrained surface-mount applications - targeting automotive, industrial, and computing systems needing robust, standardized, and AEC-Q101-capable TVS solutions.
FAQ
What is the maximum clamping voltage of the SMAJ6.0A-M3/5A under rated surge conditions?
The SMAJ6.0A-M3/5A has a maximum clamping voltage (VC) of 10.3 V at its rated peak pulse current of 38.8 A, measured using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and defines the highest voltage seen by protected circuitry during a 400 W transient event. The SMAJ6.0A-M3/5A maintains this clamping performance due to its low incremental surge resistance and glass-passivated junction structure.
Is the SMAJ6.0A-M3/5A suitable for automotive applications?
Yes - the SMAJ6.0A-M3/5A is halogen-free and RoHS-compliant (M3 suffix), and its base family is AEC-Q101 qualified when ordered with HM3 suffix (e.g., SMAJ6.0A-HM3/5A). While the M3 variant itself is commercial-grade, it shares identical electrical and thermal characteristics with the qualified version and is widely deployed in non-safety-critical automotive subsystems such as infotainment power rails and sensor interface protection. The SMAJ6.0A-M3/5A meets MSL Level 1 and supports reflow profiles required for automotive PCB assembly.
How does the SMAJ6.0A-M3/5A differ from the SMAJ6.0CA-M3/5A?
The SMAJ6.0A-M3/5A is unidirectional, with cathode marked and optimized for DC rail protection, while the SMAJ6.0CA-M3/5A is bidirectional - symmetrical in both directions with no polarity marking and double the reverse leakage limit (1600 μA vs 800 μA at VWM). Both share identical VBR, VC, PPPM, and package. The SMAJ6.0A-M3/5A is preferred for 5 V power line protection where low leakage and defined polarity matter; the CA version suits AC or floating signal lines like CAN or RS-485. Neither is pin-compatible with the other due to polarity dependency.
What is the thermal resistance and how does it affect PCB layout for the SMAJ6.0A-M3/5A?
The SMAJ6.0A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended copper pads (0.2" × 0.2" per terminal). To sustain its 3.3 W steady-state power dissipation or manage repetitive surges, PCB layout must follow DO-214AC pad dimensions - including thermal relief and copper area - otherwise junction temperature may exceed 150 °C. The SMAJ6.0A-M3/5A datasheet specifies exact pad geometry and recommends solder mask defined pads to maximize thermal transfer without compromising solder joint reliability.
Does the SMAJ6.0A-M3/5A meet industry surge immunity standards?
Yes - the SMAJ6.0A-M3/5A is engineered to meet IEC 61000-4-5 (surge immunity) Level 3 (1 kV line-to-earth, 2 Ω source impedance) and IEC 61000-4-2 (ESD) ±8 kV contact discharge when properly applied with appropriate PCB layout and grounding. Its 400 W peak pulse power rating, sub-nanosecond response time, and 10.3 V clamping voltage directly support these standards. System-level validation is still required, but the SMAJ6.0A-M3/5A provides the foundational protection capability needed to pass compliance testing in industrial and automotive applications.
SMAJ6.0A-M3/5A 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ6.0A-M3/5A FAQ
1.How can I place an order for SMAJ6.0A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0A-M3/5A 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 SMAJ6.0A-M3/5A reliable?
The price and inventory of SMAJ6.0A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0A-M3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ6.0A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0A-M3/5A?
SMAJ6.0A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0A-M3/5A 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 SMAJ6.0A-M3/5A?
For technical support, including SMAJ6.0A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0A-M3/5A requirements.
6.How does Aetrix verify that SMAJ6.0A-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0A-M3/5A 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 SMAJ6.0A-M3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ6.0A-M3/5A?
All SMAJ6.0A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0A-M3/5A, 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 SMAJ6.0A-M3/5A part is unused and in its original packaging.
Return procedure for SMAJ6.0A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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