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Vishay General Semiconductor - Diodes Division SMAJ6.0CA-M3/5A
- Part No.:
- SMAJ6.0CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CA-M3/5A.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,308
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Product details
Overview
SMAJ6.0CA-M3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMAJ6.0CA-M3/5A datasheet, SMAJ6.0CA-M3/5A pinout, SMAJ6.0CA-M3/5A application, or SMAJ6.0CA-M3/5A equivalent, key selection criteria include bidirectional clamping capability, 10.3 V max clamping voltage at rated IPPM, M3 halogen-free RoHS compliance, AEC-Q101 qualification eligibility, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM specifications in forward and reverse directions. Its glass-passivated junction enables fast response (<1 ps) to ESD and lightning-induced surges while maintaining low incremental surge resistance.
The device is rated for 400 W peak pulse power (10/1000 μs waveform) up to 78 V, derating to 300 W above that threshold. Thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), supporting 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 |
| VBR (min/max) | 6.67 V / 7.37 V at 10 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | ≤10.3 V at 38.8 A - clamped voltage during 400 W transient, limiting stress on downstream ICs |
| IPPM | 38.8 A - peak surge current capability under standardized 10/1000 μs waveform |
| PPPM | 400 W - transient energy absorption capacity without failure |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| Package | SMA (DO-214AC) - surface-mount outline with 0.208" × 0.157" footprint, optimized for high-density PCB layouts |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C reflow peak), UL 94 V-0 rated compound. Bidirectional configuration has no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output - no cathode band; identical clamping behavior in both directions |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Load Dump and IEC 61000-4-5 surge events in automotive ECUs |
| Low clamping voltage (≤10.3 V) | Ensures safe operation of 5 V logic interfaces and microcontrollers without overvoltage damage |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive supply chains |
| Fast response time (<1 ps) | Clamps ESD transients (IEC 61000-4-2 ±15 kV contact) before sensitive circuitry is stressed |
| AEC-Q101 qualification option | Supports drop-in use in automotive applications when ordered with HE3/HM3 suffix variants |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Limits voltage excursion to ≤10.3 V during 38.8 A surge, preserving integrity of 5 V rail and 3.3 V microcontroller I/O pins. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, mounted adjacent to terminal block for shortest possible transient path. Use Value: Absorbs 400 W surges without degradation, maintaining system uptime and reducing field failure rates due to voltage overstress. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: Secondary-level surge suppression on USB 2.0 data lines (D+/D−) and VBUS in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed after common-mode choke to handle differential and common-mode transients. Use Value: Clamps to ≤10.3 V within picoseconds, preventing latch-up or gate oxide rupture in USB transceivers while adding <1 pF parasitic capacitance. |
Use Scenario: Protecting Ethernet PHY front-end and POTS line interface ICs from lightning-induced surges on outdoor telecom equipment. IC Role / Device Role / Timing Role: First-stage transient suppressor on twisted-pair lines, coordinated with GDTs and series impedance for multi-stage protection. Use Value: Withstands repeated 400 W pulses per IEC 61000-4-5, extending service life of line drivers and reducing maintenance costs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0CA-E3/5A | Same electrical specs; RoHS-compliant but contains brominated flame retardants (non-halogen-free) | Acceptable for commercial-grade industrial designs where halogen-free requirement is not mandated | Select when cost sensitivity outweighs halogen-free compliance; identical thermal and mechanical behavior |
| SMAJ6.0A-M3/5A | Unidirectional variant; cathode band marked; forward VF = 3.5 V at 25 A (not applicable for bidirectional use) | Only suitable for DC-biased lines where polarity is fixed and reverse conduction must be blocked | Choose only if circuit topology requires unidirectional clamping - SMAJ6.0CA-M3/5A is mandatory for AC or floating signal lines |
Compared with SMAJ6.0CA-E3/5A, the M3 version adds halogen-free compliance without performance trade-offs; versus SMAJ6.0A-M3/5A, the CA suffix provides essential symmetry for protecting bidirectional buses like RS-485 or USB, eliminating risk of reverse conduction failure.
Availability
SMAJ6.0CA-M3/5A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and consumer USB port safeguarding requiring stable component supply across production lifecycles.
Supply support for SMAJ6.0CA-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, power efficiency, and automotive-grade qualification.
The SMAJ series delivers standardized transient suppression in compact surface-mount packages, engineered specifically for cost-sensitive yet mission-critical protection in automotive, industrial, and communications infrastructure.
FAQ
What is the clamping voltage of SMAJ6.0CA-M3/5A at its rated peak pulse current?
The SMAJ6.0CA-M3/5A clamps to a maximum of 10.3 V when subjected to its rated peak pulse current of 38.8 A under the standard 10/1000 μs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with 5 V logic families and microcontroller I/O tolerances. The SMAJ6.0CA-M3/5A maintains this clamping performance across its full operating temperature range.
Is SMAJ6.0CA-M3/5A suitable for automotive applications?
Yes - SMAJ6.0CA-M3/5A is qualified to AEC-Q101 when ordered with the HM3 suffix (e.g., SMAJ6.0CAHM3_A/I). The base SMAJ6.0CA-M3/5A shares identical electrical and thermal characteristics, and its construction - including glass-passivated junction, MSL Level 1 rating, and –55 °C to +150 °C operating range - meets core automotive environmental requirements. For certified automotive use, specify the HM3 variant; the SMAJ6.0CA-M3/5A remains fully compatible in layout and function.
How does the bidirectional design of SMAJ6.0CA-M3/5A affect its circuit implementation?
The bidirectional design of SMAJ6.0CA-M3/5A means it functions identically in both polarities, with no cathode marking and symmetrical VBR, VC, and IPPM values. This eliminates polarity concerns during placement and makes it ideal for AC-coupled or floating signal lines such as RS-485, USB D+/D−, or Ethernet pairs. Unlike unidirectional TVS diodes, the SMAJ6.0CA-M3/5A does not conduct during normal reverse bias - it only clamps when either terminal exceeds VWM in magnitude.
What is the thermal resistance profile of SMAJ6.0CA-M3/5A, and how does it impact PCB layout?
SMAJ6.0CA-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W. These values assume mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - a layout requirement explicitly defined in the datasheet. Deviating from this pad size increases RθJA, risking thermal runaway during repetitive surges. The SMAJ6.0CA-M3/5A's thermal performance directly depends on strict adherence to the recommended copper area.
Does SMAJ6.0CA-M3/5A meet industry surge immunity standards?
Yes - SMAJ6.0CA-M3/5A is designed to meet key surge immunity standards including IEC 61000-4-5 (Level 3, 1 kV line-earth, 2 kV line-line) and ISO 7637-2 (Pulse 1, 2a, 3a/b, 5a). Its 400 W peak pulse power rating (10/1000 μs) and ≤10.3 V clamping voltage enable effective coordination with upstream filters and downstream ICs to pass these tests. System-level compliance requires proper PCB layout and coordination with other protection elements - the SMAJ6.0CA-M3/5A provides the foundational clamping capability required by these standards.
SMAJ6.0CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMAJ6.0CA-M3/5A FAQ
1.How can I place an order for SMAJ6.0CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CA-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 SMAJ6.0CA-M3/5A reliable?
The price and inventory of SMAJ6.0CA-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 SMAJ6.0CA-M3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CA-M3/5A?
SMAJ6.0CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CA-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 SMAJ6.0CA-M3/5A?
For technical support, including SMAJ6.0CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CA-M3/5A requirements.
6.How does Aetrix verify that SMAJ6.0CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CA-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 SMAJ6.0CA-M3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CA-M3/5A?
All SMAJ6.0CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CA-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 SMAJ6.0CA-M3/5A part is unused and in its original packaging.
Return procedure for SMAJ6.0CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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