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Vishay General Semiconductor - Diodes Division SMAJ6.0CAHE3_A/H
- Part No.:
- SMAJ6.0CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CAHE3_A/H.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ6.0CAHE3_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, 400 W peak pulse power (10/1000 μs), and clamps to ≤10.3 V at 38.8 A peak surge current - used to protect MOSFET gates, sensor interfaces, and automotive control modules against ESD and inductive switching spikes.
For engineers reviewing the SMAJ6.0CAHE3_A/H datasheet, SMAJ6.0CAHE3_A/H pinout, SMAJ6.0CAHE3_A/H application, or SMAJ6.0CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 μA at VWM), while the SMA package provides MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility.
The device delivers 400 W peak pulse power up to 78 V and derates to 300 W above that threshold, with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W - confirming suitability for compact PCB layouts where localized heating must be managed during transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - maximum continuous reverse operating voltage before clamping begins; defines safe signal swing range for protected circuitry. |
| VBR min/max | 6.67 V / 7.37 V at 10 mA - tight breakdown window ensures predictable turn-on and minimal overvoltage exposure during transients. |
| VC @ IPPM | ≤10.3 V at 38.8 A - clamping voltage under 10/1000 μs surge; limits stress on downstream ICs such as microcontrollers or transceivers. |
| PPPM | 400 W (≤78 V), 300 W (>78 V) - peak pulse power handling per JEDEC standard; determines survivability against lightning or load-dump surges. |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial enclosures without derating. |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with J-STD-002 soldering. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional types; meets UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current from either direction; connects to line being protected (e.g., CAN_H or RS-485 A). |
| Cathode | Transient current exit (bidirectional) | Completes surge path to ground or return rail; symmetrical with Anode for CA-series devices. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - supports use in ADAS sensors, body control modules, and infotainment systems. |
| 400 W peak pulse power (10/1000 μs) | Withstands high-energy transients like ISO 7637-2 Pulse 1/2a/5a without degradation - critical for 12 V/24 V vehicle electrical systems. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during fast transients - protects sensitive gate oxides in MOSFET drivers and I/O pins of MCUs. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without moisture-related popcorning - reduces manufacturing yield loss in high-volume SMT lines. |
| Glass passivated junction | Ensures long-term parameter stability and low leakage drift across temperature and lifetime - essential for mission-critical industrial monitoring. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and MCU ADC input, shunting transients to chassis ground. Use Value: Limits voltage excursion to ≤10.3 V during 38.8 A surges, preventing ADC saturation and preserving measurement accuracy in harsh EMI environments. |
Use Scenario: Safeguarding RS-485 transceiver terminals (A/B) in factory automation PLCs subject to cable-induced surges and ground potential differences. IC Role / Device Role / Timing Role: Differential-line TVS connected across A–B and from each line to ground, suppressing common-mode and differential-mode transients. Use Value: Maintains signal integrity by clamping fast-rising edges within 1 ns response time, avoiding false data framing or bus lockup during EMC testing. |
| Consumer USB Port ESD | Power Supply Input Stage |
|
Use Scenario: ESD protection for USB 2.0 D+/D− lines in portable medical monitors and smart home hubs compliant with IEC 61000-4-2 Level 4 (±15 kV air). IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at USB connector, minimizing trace inductance before protected IC. Use Value: Absorbs 15 kV contact discharge with <1.0 μA leakage at 6.0 V, ensuring no impact on high-speed signal rise/fall times or eye diagram compliance. |
Use Scenario: Secondary-side transient suppression on 5 V or 12 V DC input rails feeding FPGA or DSP power domains in telecom base station boards. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted upstream of LDO or DC/DC converter input, clamping inductive kickback from nearby relays or solenoids. Use Value: Withstands repetitive 400 W pulses at 0.01% duty cycle, preventing brownout resets and extending power stage reliability in high-noise power distribution networks. |
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-E3/61 | Same electrical specs and SMA package; RoHS-compliant commercial grade without AEC-Q101 qualification. | Lacks automotive qualification; suitable for consumer or industrial non-automotive designs requiring cost optimization. | Select when AEC-Q101 is not mandated and lifecycle assurance for automotive programs is unnecessary. |
| SMCJ6.0CAHE3_A/H | Higher 1500 W peak pulse power (10/1000 μs), same VWM/VBR/VC, but larger SMC (DO-214AB) package. | Used where higher surge immunity is required (e.g., outdoor telecom equipment), but board space and thermal mass allow larger footprint. | Choose when system-level surge testing exceeds 400 W requirements and PCB layout accommodates 7.11 mm × 6.22 mm outline. |
Compared with SMAJ6.0CAHE3_A/H, SMAJ6.0CA-E3/61 offers identical protection performance at lower qualification cost, while SMCJ6.0CAHE3_A/H trades compact size for 3.75× higher pulse power - enabling robustness upgrades without redesigning clamping topology.
Availability
SMAJ6.0CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and consumer USB port ESD mitigation requiring stable component supply across multi-year production cycles.
Supply support for SMAJ6.0CAHE3_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, precision, and automotive-grade validation.
The SMAJ series was developed specifically for high-reliability transient suppression in space-constrained, high-surge environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and repeatable clamping behavior.
FAQ
What is the clamping voltage of SMAJ6.0CAHE3_A/H at its rated peak pulse current?
The SMAJ6.0CAHE3_A/H clamps to a maximum of 10.3 V at its rated peak pulse current of 38.8 A under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and reflects worst-case voltage seen by protected circuitry during surge events - critical for verifying margin against IC absolute maximum ratings. The SMAJ6.0CAHE3_A/H achieves this with low incremental surge resistance, ensuring consistent performance across production lots.
Is SMAJ6.0CAHE3_A/H suitable for automotive applications?
Yes, SMAJ6.0CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix, indicating RoHS-compliance and stress-test validation for temperature cycling, humidity bias, and mechanical shock. It is deployed in engine control units, ADAS camera modules, and body electronics where transient immunity to ISO 7637-2 pulses is mandatory - making SMAJ6.0CAHE3_A/H appropriate for under-hood and cabin-mounted systems.
How does the bidirectional configuration of SMAJ6.0CAHE3_A/H affect its circuit placement?
The bidirectional design of SMAJ6.0CAHE3_A/H eliminates polarity concerns during placement - it can be installed across any two points needing symmetric overvoltage protection, such as differential signal pairs (CAN_H/CAN_L, RS-485 A/B) or AC-coupled lines. Unlike unidirectional TVS diodes, SMAJ6.0CAHE3_A/H has no cathode band marking and functions identically regardless of orientation, simplifying layout and reducing assembly errors in high-density PCBs.
What is the maximum operating temperature for SMAJ6.0CAHE3_A/H?
The SMAJ6.0CAHE3_A/H has a maximum junction temperature (TJ) of +150 °C, verified per its thermal characterization and AEC-Q101 qualification. This allows reliable operation in under-hood automotive environments and sealed industrial enclosures without forced cooling. Derating curves in the datasheet confirm usable power dissipation down to ambient temperatures of –55 °C, supporting SMAJ6.0CAHE3_A/H deployment in extended temperature-range applications.
Does SMAJ6.0CAHE3_A/H meet lead-free soldering requirements?
Yes, SMAJ6.0CAHE3_A/H is rated for lead-free reflow with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL Level 1 requirements. Its matte tin-plated leads comply with JESD 22-B102 solderability standards and JESD 201 Class 2 whisker resistance testing - ensuring robust intermetallic formation and long-term joint integrity in automated SMT processes using SAC305 or similar alloys.
SMAJ6.0CAHE3_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:
- -
- 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_A/H FAQ
1.How can I place an order for SMAJ6.0CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CAHE3_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 SMAJ6.0CAHE3_A/H reliable?
The price and inventory of SMAJ6.0CAHE3_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 SMAJ6.0CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CAHE3_A/H?
SMAJ6.0CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CAHE3_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 SMAJ6.0CAHE3_A/H?
For technical support, including SMAJ6.0CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CAHE3_A/H requirements.
6.How does Aetrix verify that SMAJ6.0CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CAHE3_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 SMAJ6.0CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CAHE3_A/H?
All SMAJ6.0CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CAHE3_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 SMAJ6.0CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMAJ6.0CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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