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Vishay General Semiconductor - Diodes Division SMB8J6.0CAHE3/52
- Part No.:
- SMB8J6.0CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.0CAHE3/52.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,094
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Product details
Overview
SMB8J6.0CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 6.0 V stand-off voltage (VWM), 10.3 V maximum clamping voltage (VC) at 2000 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J6.0CAHE3/52 datasheet, SMB8J6.0CAHE3/52 pinout, SMB8J6.0CAHE3/52 application, or SMB8J6.0CAHE3/52 equivalent, key selection criteria include AEC-Q101 qualification, bidirectional clamping symmetry, low VC/VWM ratio (1.72), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical bidirectional clamping to protect against both positive and negative transients. Its breakdown voltage (VBR) is specified at 6.67–7.37 V (min/max) with 10 mA test current, and it maintains stable performance across -55 °C to +150 °C operating junction temperature.
The SMB8J6.0CAHE3/52 exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges (IEC 61000-4-5). It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive under-hood and chassis applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse working voltage before clamping begins; sets upper limit for normal signal/power rail operation. |
| VBR (min/max) | 6.67 V / 7.37 V - Breakdown occurs within this range at 10 mA; ensures reliable turn-on margin above VWM. |
| VC @ IPPM | 10.3 V at 2000 A - Clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by protected IC. |
| PPPM | 800 W - Peak pulse power handling capability; determines survivability under standardized surge waveforms. |
| IPPM | 2000 A - Peak pulse current rating with 10/1000 µs waveform; used to size PCB trace width and pad thermal mass. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs thermal derating above 25 °C ambient. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bidirectional terminals - either end serves as anode or cathode depending on transient polarity; no color band or marking required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives; critical for harsh environment deployment. |
| Low clamping ratio (VC/VWM = 1.72) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices, improving system-level robustness. |
| MSL Level 1 compliance | Enables direct placement without baking; compatible with standard reflow profiles up to 260 °C peak. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures. |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role: Bidirectional voltage clamp placed between signal line and ground, absorbing energy before it reaches the transceiver input stage. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while limiting clamped voltage to ≤10.3 V - below absolute maximum ratings of most automotive-grade transceivers. | Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges (e.g., relay coil flyback, motor switching). IC Role / Device Role: Primary surge suppression element on 24 V DC input channels, mounted directly at connector entry point. Use Value: Withstands repeated 1 kV/500 A surges per IEC 61000-4-5 (Level 3), reducing need for secondary protection stages and simplifying board layout. |
| USB Port ESD Protection | DC Power Rail Surge Suppression |
Use Scenario: Safeguarding USB 2.0 data lines (D+/D−) against contact ESD per IEC 61000-4-2 ±15 kV air / ±8 kV contact discharge. IC Role / Device Role: Low-capacitance TVS array alternative - used individually per line due to symmetric bidirectional clamping behavior. Use Value: Achieves sub-100 ps response time and clamps transients to <10.3 V, preventing latch-up or gate oxide damage in USB PHY ICs. | Use Scenario: Protecting 5–24 V DC power rails in embedded systems from inductive switching spikes and lightning-induced surges. IC Role / Device Role: Parallel-connected shunt protector across supply rail and ground, triggered only during overvoltage events. Use Value: Handles 800 W peak power without degradation, enabling single-device protection for mid-power subsystems without active crowbar circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J6.0CA-E3/52 | No AEC-Q101 qualification; commercial-grade only; identical electrical specs and package. | Not suitable for automotive production; acceptable for industrial or consumer prototypes. | Select SMB8J6.0CAHE3/52 when AEC-Q101 compliance is mandatory for OEM automotive programs. |
| SMAJ6.0CAHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VC specs. | Limited to lower-energy threats; insufficient for ISO 7637-2 Pulse 5a load dump. | Choose SMB8J6.0CAHE3/52 where higher surge margin and thermal mass are required for demanding automotive or industrial use. |
Compared with SMB8J6.0CA-E3/52 and SMAJ6.0CAHE3/A, the SMB8J6.0CAHE3/52 uniquely combines AEC-Q101 qualification, 800 W surge capacity, and SMB package thermal robustness - making it the preferred choice for production automotive electronics requiring validated reliability and high-energy clamping.
Availability
SMB8J6.0CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, USB port ESD hardening, and DC power rail surge suppression requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMB8J6.0CAHE3/52 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 application-specific optimization.
The SMB8J6.0CAHE3/52 belongs to Vishay's TRANSZORB® family of high-power-density TVS diodes, engineered specifically for automotive and industrial systems requiring robust, AEC-Q101-qualified transient suppression in compact surface-mount packages.
FAQ
What is the clamping voltage of SMB8J6.0CAHE3/52 at its rated peak pulse current?
The SMB8J6.0CAHE3/52 has a maximum clamping voltage (VC) of 10.3 V when subjected to its rated peak pulse current of 2000 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and reflects worst-case overvoltage seen by protected circuitry during surge events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is SMB8J6.0CAHE3/52 suitable for automotive applications?
Yes, SMB8J6.0CAHE3/52 is AEC-Q101 qualified and explicitly designated for automotive use with suffix "HE3". It undergoes rigorous stress testing including temperature cycling, high-temperature operating life, and mechanical shock - making it appropriate for engine control units, body electronics, and ADAS sensor modules where reliability under harsh conditions is mandatory.
How does the bidirectional configuration of SMB8J6.0CAHE3/52 affect its circuit implementation?
The SMB8J6.0CAHE3/52 has symmetrical bidirectional clamping, meaning it protects against both positive and negative transients without polarity sensitivity. Unlike unidirectional TVS diodes, it requires no orientation during placement and is ideal for AC-coupled lines, differential buses (e.g., CAN, RS-485), or any application where voltage reversals may occur - simplifying layout and eliminating risk of incorrect installation.
What is the thermal resistance of SMB8J6.0CAHE3/52, and how does it impact PCB layout?
The SMB8J6.0CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repeated surges, designers must provide adequate copper area and avoid excessive trace length - especially important in high-duty-cycle industrial environments where thermal accumulation could degrade long-term performance of the SMB8J6.0CAHE3/52.
Does SMB8J6.0CAHE3/52 meet RoHS and halogen-free requirements?
Yes, SMB8J6.0CAHE3/52 is RoHS-compliant and meets Vishay's material categorization standards per document 99912. The "HE3" suffix confirms RoHS compliance and AEC-Q101 qualification; however, it is not halogen-free - for halogen-free versions, the "HM3" suffix (e.g., SMB8J6.0CAHM3/52) must be selected instead.
SMB8J6.0CAHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 77.7A
- Power - Peak Pulse:
- 800W
- 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-214AA (SMB)
SMB8J6.0CAHE3/52 FAQ
1.How can I place an order for SMB8J6.0CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.0CAHE3/52 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 SMB8J6.0CAHE3/52 reliable?
The price and inventory of SMB8J6.0CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J6.0CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J6.0CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.0CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.0CAHE3/52?
SMB8J6.0CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.0CAHE3/52 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 SMB8J6.0CAHE3/52?
For technical support, including SMB8J6.0CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.0CAHE3/52 requirements.
6.How does Aetrix verify that SMB8J6.0CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J6.0CAHE3/52 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 SMB8J6.0CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J6.0CAHE3/52?
All SMB8J6.0CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.0CAHE3/52, 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 SMB8J6.0CAHE3/52 part is unused and in its original packaging.
Return procedure for SMB8J6.0CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.0CAHE3/52 Tags
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