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Vishay General Semiconductor - Diodes Division SMAJ6.0CAHM3_A/H
- Part No.:
- SMAJ6.0CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CAHM3_A/H.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,850
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Product details
Overview
SMAJ6.0CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features a 6.0 V stand-off voltage (VWM), 6.67–7.37 V breakdown voltage (VBR) at 10 mA, and clamps to ≤10.3 V at 38.8 A peak pulse current (IPPM) under 10/1000 μs waveform - protecting sensitive ICs and MOSFETs in automotive and industrial interfaces.
For engineers reviewing the SMAJ6.0CAHM3_A/H datasheet, SMAJ6.0CAHM3_A/H pinout, SMAJ6.0CAHM3_A/H application, or SMAJ6.0CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, 400 W peak pulse power rating, AEC-Q101 qualification status, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protection element across two terminals, responding to both positive and negative transients without polarity dependence. Its silicon avalanche junction provides sub-nanosecond response time and low dynamic impedance during surge events.
The SMAJ6.0CAHM3_A/H is rated for 400 W peak pulse power (10/1000 μs), derated above 25 °C per thermal curve Fig. 2, with maximum junction temperature of +150 °C and thermal resistance RθJA = 120 °C/W. It meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC bias margin. |
| VBR (min/max) | 6.67 V / 7.37 V at IT = 10 mA - Confirmed breakdown threshold range; ensures reliable turn-on during overvoltage events. |
| VC @ IPPM | ≤10.3 V at 38.8 A - Clamped voltage during 400 W transient; determines protected circuit's maximum stress level. |
| IPPM | 38.8 A - Peak surge current survivable under 10/1000 μs waveform; defines surge energy handling capacity. |
| PPPM | 400 W - Peak pulse power rating; sets transient immunity level for IEC 61000-4-5 and ISO 7637-2 compliance designs. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - Standard surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal design; enables high-volume reflow assembly. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | One terminal of symmetrical avalanche junction; conducts during negative surges relative to cathode reference. |
| Cathode | Transient current entry (positive half-cycle) | Other terminal of symmetrical junction; conducts during positive surges; bidirectional symmetry eliminates orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, body electronics, and ADAS modules. |
| 400 W peak pulse power | Supports robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 4 surges without derating below 78 V. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-20 MSL Level 1 and JESD201 Class 2 whisker resistance - compatible with lead-free reflow and green manufacturing requirements. |
| Low clamping ratio (VC/VBR) | Clamping ratio ≤1.54 (10.3 V / 6.67 V) ensures minimal overvoltage exposure to downstream ICs during fast transients. |
| Glass passivated junction | Enhances long-term stability and moisture resistance - critical for field reliability in humid or thermally cycled environments. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and inductive switching spikes in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed across power rail and ground near connector entry point. Use Value: Limits transient voltage to ≤10.3 V, preventing latch-up or gate oxide damage in 5 V-tolerant automotive MCUs. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to PLC analog input modules. IC Role / Device Role / Timing Role: Two-terminal shunt protector on sensor signal line and return path, absorbing ESD and cable discharge events. Use Value: Sub-ns response ensures clamping occurs before 5 V op-amp inputs exceed absolute maximum ratings. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines behind primary polymer fuse or GDT. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector to divert ±15 kV contact discharge. Use Value: 10.3 V clamping voltage preserves signal integrity while meeting IEC 61000-4-2 Level 4 requirements. |
Use Scenario: Front-end surge suppression on twisted-pair DSL lines exposed to lightning-induced surges in outdoor cabinets. IC Role / Device Role / Timing Role: Primary shunt protector across line pair, coordinated with gas discharge tube (GDT) for staged protection. Use Value: 400 W rating handles 10/1000 μs surges up to 38.8 A, enabling coordination with upstream GDT holdover voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0CAHE3_A/H | Same electrical specs; RoHS-compliant but not halogen-free; uses standard tin plating instead of halogen-free molding compound. | Approved for commercial/industrial use; lacks halogen-free certification required by some Tier 1 automotive OEMs. | Select when halogen-free compliance is not mandated and cost optimization is prioritized. |
| SMAJ6.0AHE3_A/H | Unidirectional variant; cathode-marked; forward voltage drop (~3.5 V at 25 A) adds conduction loss in DC-biased lines. | Requires correct polarity placement; unsuitable for AC-coupled or floating differential lines like RS-485 or CAN. | Choose only for unidirectional DC rails where polarity is fixed and lower leakage at VWM is beneficial. |
Compared with SMAJ6.0CAHE3_A/H, the SMAJ6.0CAHM3_A/H adds halogen-free compliance for stricter environmental programs; versus SMAJ6.0AHE3_A/H, its bidirectional symmetry eliminates layout sensitivity and supports AC signal line protection without polarity constraints.
Availability
SMAJ6.0CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer USB interfaces, and telecom line cards requiring stable component supply with full traceability and lifecycle management.
Supply support for SMAJ6.0CAHM3_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 performance.
The SMAJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and communications systems where AEC-Q101 qualification and repeatable clamping behavior are mandatory.
FAQ
What does the "HM3" suffix indicate in SMAJ6.0CAHM3_A/H?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated leads and JESD201 Class 2 whisker resistance. It confirms compliance with automotive environmental standards beyond basic RoHS, distinguishing it from the "HE3" (RoHS only) variant. The SMAJ6.0CAHM3_A/H is fully qualified to AEC-Q101 and rated for operation from −55 °C to +150 °C.
Is SMAJ6.0CAHM3_A/H suitable for protecting CAN bus lines?
Yes, SMAJ6.0CAHM3_A/H is appropriate for CAN FD and classical CAN physical layer protection due to its bidirectional clamping, 10.3 V clamping voltage, and fast response time. Its VWM of 6.0 V allows safe operation with 5 V CAN transceivers, and the DO-214AC package supports compact placement near connectors. It must be used with proper PCB layout - 5.0 mm × 5.0 mm copper pads per terminal - to sustain 400 W pulses.
How does SMAJ6.0CAHM3_A/H differ from SMAJ6.0AHE3_A/H in circuit behavior?
SMAJ6.0CAHM3_A/H is bidirectional with symmetric clamping in both polarities, while SMAJ6.0AHE3_A/H is unidirectional and conducts only when cathode is positive relative to anode. This makes SMAJ6.0CAHM3_A/H ideal for AC-coupled or floating lines (e.g., RS-485, audio, Ethernet), whereas SMAJ6.0AHE3_A/H requires strict polarity alignment and introduces forward voltage drop in DC paths. Both share identical VWM, VBR, and VC specs.
What is the maximum allowable PCB pad size for optimal thermal performance of SMAJ6.0CAHM3_A/H?
The datasheet specifies 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal as the minimum recommended layout for rated 400 W peak pulse power. Larger pads improve thermal dissipation but do not increase IPPM beyond the device's intrinsic limit. Pad geometry must maintain symmetry and avoid thermal imbalance between terminals to prevent premature failure during repetitive surges.
Does SMAJ6.0CAHM3_A/H meet IEC 61000-4-5 surge immunity requirements?
Yes, SMAJ6.0CAHM3_A/H is rated for 400 W peak pulse power with a 10/1000 μs waveform - directly supporting IEC 61000-4-5 Level 4 (4 kV line-to-earth, 2 kV line-to-line) when applied with proper coordination (e.g., series impedance). Its 10.3 V clamping voltage ensures protected circuits remain within safe operating area during standardized surge tests, provided PCB layout and grounding follow best practices.
SMAJ6.0CAHM3_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:
- -
- 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:
- 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)
SMAJ6.0CAHM3_A/H FAQ
1.How can I place an order for SMAJ6.0CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CAHM3_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 SMAJ6.0CAHM3_A/H reliable?
The price and inventory of SMAJ6.0CAHM3_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 SMAJ6.0CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CAHM3_A/H?
SMAJ6.0CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CAHM3_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 SMAJ6.0CAHM3_A/H?
For technical support, including SMAJ6.0CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CAHM3_A/H requirements.
6.How does Aetrix verify that SMAJ6.0CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CAHM3_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 SMAJ6.0CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CAHM3_A/H?
All SMAJ6.0CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CAHM3_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 SMAJ6.0CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMAJ6.0CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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