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Vishay General Semiconductor - Diodes Division SMAJ6.0CAHE3/61
- Part No.:
- SMAJ6.0CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CAHE3/61.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,407
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Product details
Overview
SMAJ6.0CAHE3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping ESD and surge transients on signal/power lines. It features 6.0 V stand-off voltage (VWM), 6.40–7.07 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 current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMAJ6.0CAHE3/61 datasheet, SMAJ6.0CAHE3/61 pinout, SMAJ6.0CAHE3/61 application, or SMAJ6.0CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low leakage (<800 μA at VWM), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance, enabling consistent response to fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/3a, IEC 61000-4-2 ESD).
The device is rated for 400 W peak pulse power up to 78 V and derates to 300 W above that threshold, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It meets MSL Level 1 per J-STD-020 and supports reflow peak temperatures up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 6.40 V / 7.07 V at 10 mA - guaranteed breakdown window defining turn-on threshold consistency |
| VC @ IPPM | 10.3 V at 38.8 A - clamped voltage during 400 W 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 400 W - peak transient energy absorption capacity under standard waveform, critical for automotive load-dump immunity |
| ID @ VWM | ≤800 μA - low leakage ensures minimal standby power loss in battery-powered sensor nodes |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with high-speed pick-and-place and IPC-7351B land patterns |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional configuration; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; accepts surge current in either direction |
| Cathode | Transient current entry (positive polarity) | Second terminal of symmetrical PN junction; completes bidirectional conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JESD47 |
| 400 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (battery disconnect) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage exposure to protected ICs such as CAN transceivers or ADC front-ends |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without moisture-related popcorning or delamination |
| Glass passivated junction | Ensures stable VBR drift <±5 % over lifetime and improved resistance to humidity-induced leakage |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role: Bidirectional clamping element placed between signal line and ground, shunting transients before they reach MCU or transceiver inputs. Use Value: Maintains signal integrity below 10.3 V clamp level while supporting AEC-Q101 compliance for 15-year automotive service life. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring surges and induced noise in factory automation systems. IC Role / Device Role: Primary surge suppression component across dry-contact inputs and optocoupler front-ends. Use Value: Absorbs 400 W transients without failure, enabling >100,000 switching cycles under repetitive surge conditions per IEC 61000-4-4. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: Shielding USB 2.0 D+/D− lines in portable devices from human-body-model (HBM) ESD and cable discharge events. IC Role / Device Role: Low-capacitance bidirectional TVS placed directly at connector, minimizing trace inductance impact. Use Value: Sub-1 nF junction capacitance (typ.) preserves signal rise/fall times while meeting IEC 61000-4-2 ±8 kV contact discharge. |
Use Scenario: Protecting Ethernet PHY interface pins and telephone line drivers from lightning-induced surges in VoIP gateways and DSL modems. IC Role / Device Role: First-stage transient limiter ahead of GDT or secondary TVS, handling fast-rising common-mode spikes. Use Value: Fast response time (<1 ns) and symmetric clamping ensure balanced differential line protection without skew. |
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-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification | No functional difference; selected when halogen-free material compliance is mandated by OEM spec | Direct substitution where halogen content restrictions apply; same thermal and mechanical behavior |
| SMBJ6.0CAHE3/61 | Same VWM/VBR/VC but in SMB (DO-214AA) package - 27 % larger footprint, 50 % higher PPPM (600 W) | Better suited for higher-energy surges; requires PCB layout change due to larger pad dimensions | Choose when system-level testing reveals 400 W insufficient; not pin-compatible - new land pattern required |
Compared with SMAJ6.0CAHE3/61, the SMAJ6.0CA-M3/61 offers identical protection performance with halogen-free construction, while SMBJ6.0CAHE3/61 delivers higher surge margin at the cost of board space and layout revision - making SMAJ6.0CAHE3/61 optimal for space-constrained AEC-Q101 designs needing precise 400 W capability.
Availability
SMAJ6.0CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and consumer port-level ESD suppression requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMAJ6.0CAHE3/61 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 automotive-grade validation.
The SMAJ series targets high-reliability transient suppression in harsh environments, engineered specifically for AEC-Q101 compliance, automated manufacturing, and robust clamping across automotive, industrial, and telecom infrastructure.
FAQ
What does the "HE3" suffix indicate in SMAJ6.0CAHE3/61?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification. It confirms that SMAJ6.0CAHE3/61 meets automotive reliability standards including temperature cycling, highly accelerated life testing, and ESD robustness - distinct from commercial-grade "E3" or halogen-free "HM3" variants. This makes SMAJ6.0CAHE3/61 suitable for under-hood and safety-critical ECU applications where long-term stability is mandatory.
Is SMAJ6.0CAHE3/61 unidirectional or bidirectional?
SMAJ6.0CAHE3/61 is a bidirectional TVS diode, as indicated by the "CA" suffix. It provides symmetrical clamping in both polarities - essential for protecting AC-coupled lines, differential buses (e.g., CAN, RS-485), or any circuit where voltage transients may swing positive or negative relative to ground. Unlike unidirectional "A" variants, SMAJ6.0CAHE3/61 has no cathode marking and exhibits identical VBR and VC characteristics in either direction.
What is the maximum clamping voltage of SMAJ6.0CAHE3/61 under surge conditions?
The maximum clamping voltage (VC) of SMAJ6.0CAHE3/61 is 10.3 V at 38.8 A peak pulse current, measured using the standardized 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 400 W transient event. Engineers use this parameter to verify that downstream components - such as 3.3 V or 5 V MCUs, transceivers, or sensors - remain within their absolute maximum ratings during surge exposure.
Can SMAJ6.0CAHE3/61 be used in place of SMAJ6.0AHE3/61?
No - SMAJ6.0CAHE3/61 and SMAJ6.0AHE3/61 are not interchangeable without circuit review. SMAJ6.0AHE3/61 is unidirectional (cathode-marked, conducts only in reverse bias), while SMAJ6.0CAHE3/61 is bidirectional (no marking, clamps symmetrically). Substituting one for the other risks incorrect biasing, failed protection during positive transients, or unintended conduction in DC-biased lines. Always match polarity type to schematic intent and layout constraints.
What PCB pad layout is recommended for SMAJ6.0CAHE3/61?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMAJ6.0CAHE3/61 to achieve rated 400 W pulse power dissipation. The SMA (DO-214AC) package requires IPC-7351B compliant land patterns with 0.074" pad width and 0.208" overall length. Thermal vias under pads are recommended for sustained surge duty cycles, and solder mask defined (SMD) pads improve wetting reliability during lead-free reflow.
SMAJ6.0CAHE3/61 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:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ6.0CAHE3/61 FAQ
1.How can I place an order for SMAJ6.0CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CAHE3/61 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 SMAJ6.0CAHE3/61 reliable?
The price and inventory of SMAJ6.0CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CAHE3/61?
SMAJ6.0CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CAHE3/61 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 SMAJ6.0CAHE3/61?
For technical support, including SMAJ6.0CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CAHE3/61 requirements.
6.How does Aetrix verify that SMAJ6.0CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CAHE3/61 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 SMAJ6.0CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CAHE3/61?
All SMAJ6.0CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CAHE3/61, 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 SMAJ6.0CAHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ6.0CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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