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Vishay General Semiconductor - Diodes Division SMAJ6.0CAHE3_A/I
- Part No.:
- SMAJ6.0CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CAHE3_A/I.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,821
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Product details
Overview
SMAJ6.0CAHE3_A/I 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 in automotive sensor protection, industrial I/O interfaces, and USB/RS-485 line safeguarding.
For engineers reviewing the SMAJ6.0CAHE3_A/I datasheet, SMAJ6.0CAHE3_A/I pinout, SMAJ6.0CAHE3_A/I application, or SMAJ6.0CAHE3_A/I 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 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both directions, enabling robust suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMA package supports high thermal dissipation via low RθJL (30 °C/W).
The SMAJ6.0CAHE3_A/I is rated for repetitive 0.01% duty cycle surges up to 400 W below 78 V and derates linearly above 25 °C ambient per Fig. 2. It meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance, making it suitable for harsh-environment automotive and industrial deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 6.67 V / 7.37 V at 10 mA - guaranteed avalanche onset range under standardized test conditions |
| VC @ IPPM | ≤10.3 V at 38.8 A - clamped voltage during worst-case 10/1000 μs surge, defining protected circuit stress |
| PPPM | 400 W (10/1000 μs) - peak transient energy absorption capacity with defined waveform |
| ID @ VWM | ≤800 μA - leakage current level that minimally loads protected circuitry at stand-off |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm thermal pad footprint |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; meets UL 94 V-0 flammability rating and MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (negative polarity) | One terminal of symmetrical PN junction; accepts reverse surge current during negative transients |
| Cathode | Transient current entry point (positive polarity) | Other terminal of symmetrical PN junction; accepts reverse surge current during positive transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 5.0 mm × 5.0 mm PCB copper pads |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or microcontroller I/O pins |
| Fast response time (<1 ns) | Activates before sensitive semiconductor junctions experience destructive overvoltage |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking or special handling prior to assembly |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting ABS wheel speed sensor signal lines from load-dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair between sensor and MCU ADC input. Use Value: Limits transient excursions to ≤10.3 V, preventing latch-up or gate oxide damage in automotive-grade microcontrollers. |
Use Scenario: Safeguarding RS-485 transceiver bus lines (A/B) against ESD and lightning-induced surges in factory automation PLCs. IC Role / Device Role / Timing Role: Line-to-line TVS connected differentially across termination resistors at bus endpoints. Use Value: Absorbs 400 W surges without degradation, maintaining signal integrity and meeting IEC 61000-4-5 compliance. |
| USB 2.0 Data Line Protection | Power Supply Input Clamp |
|
Use Scenario: Shielding D+/D− lines of embedded USB peripherals from human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed immediately after USB connector, before series impedance. Use Value: Clamps 8 kV contact discharge to <10.3 V within nanoseconds, preserving USB signal rise/fall times. |
Use Scenario: Suppressing 12 V rail transients caused by relay coil de-energization in industrial control modules. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor to shunt surge energy away from DC-DC converter input stage. Use Value: Prevents overvoltage shutdown or MOSFET avalanche failure by limiting rail excursion to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0CA-M3 | Halogen-free, RoHS-compliant, non-AEC-Q101 qualified; identical electrical specs and package | Lacks automotive qualification; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and halogen-free material compliance is mandated |
| SMAJ6.0AHE3_A/I | Unidirectional version with cathode band marking; same VWM, VBR, PPPM, and package | Requires correct polarity placement; unsuitable for AC-coupled or floating differential lines | Choose only where unidirectional surge direction is guaranteed and polarity can be controlled |
Compared with SMAJ6.0CAHE3_A/I, the SMAJ6.0CA-M3 offers identical clamping performance without automotive qualification, while SMAJ6.0AHE3_A/I requires strict polarity alignment and cannot protect bidirectional transients - making SMAJ6.0CAHE3_A/I the sole choice for polarity-agnostic protection in automotive and industrial serial interfaces.
Availability
SMAJ6.0CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, and USB peripheral designs requiring stable component supply with full AEC-Q101 traceability and long-term production support.
Supply support for SMAJ6.0CAHE3_A/I 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 optimization.
The SMAJ series targets board-level transient suppression in automotive, industrial, and telecom systems, engineered for high-energy surge immunity, low clamping voltage, and seamless integration into automated SMT processes.
FAQ
What does the "CA" suffix indicate in SMAJ6.0CAHE3_A/I?
The "CA" suffix denotes a bidirectional configuration - meaning SMAJ6.0CAHE3_A/I provides symmetrical clamping for both positive and negative voltage transients without polarity dependence. This distinguishes it from unidirectional variants like SMAJ6.0AHE3_A/I and enables use across floating or AC-coupled signal paths where voltage polarity is undefined.
Is SMAJ6.0CAHE3_A/I qualified for automotive applications?
Yes, SMAJ6.0CAHE3_A/I is AEC-Q101 qualified, verified per the Vishay specification document 88390 (Rev. 09-Jan-2024). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, confirming suitability for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of SMAJ6.0CAHE3_A/I at its rated surge current?
The maximum clamping voltage (VC) of SMAJ6.0CAHE3_A/I is 10.3 V at its rated peak pulse current (IPPM) of 38.8 A, measured using the standard 10/1000 μs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the SMAJ6.0CAHE3_A/I package differ from SMB or SMC variants?
SMAJ6.0CAHE3_A/I uses the SMA (DO-214AC) package - smaller than SMB (DO-214AA) and SMC (DO-214AB), with typical dimensions of 4.93 mm × 3.99 mm × 2.29 mm. Its lower thermal resistance (RθJL = 30 °C/W) and compatibility with 5.0 mm × 5.0 mm copper pads optimize surge energy dissipation in space-constrained layouts where SMB/SMC may be oversized.
Can SMAJ6.0CAHE3_A/I replace SMAJ6.0AHE3_A/I in an existing design?
No - SMAJ6.0CAHE3_A/I is bidirectional while SMAJ6.0AHE3_A/I is unidirectional; substituting them requires verifying polarity constraints. SMAJ6.0CAHE3_A/I lacks a cathode band and clamps equally in both directions, whereas SMAJ6.0AHE3_A/I only protects against reverse-biased surges and will conduct forward current if misoriented. Layout and schematic review is mandatory before replacement.
SMAJ6.0CAHE3_A/I 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/I FAQ
1.How can I place an order for SMAJ6.0CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CAHE3_A/I 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/I reliable?
The price and inventory of SMAJ6.0CAHE3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CAHE3_A/I?
SMAJ6.0CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CAHE3_A/I 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/I?
For technical support, including SMAJ6.0CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CAHE3_A/I requirements.
6.How does Aetrix verify that SMAJ6.0CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CAHE3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CAHE3_A/I?
All SMAJ6.0CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CAHE3_A/I, 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/I part is unused and in its original packaging.
Return procedure for SMAJ6.0CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.0CAHE3_A/I Tags
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