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Vishay General Semiconductor - Diodes Division SMCJ8.0CAHE3/9AT
- Part No.:
- SMCJ8.0CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0CAHE3/9AT.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,759
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Product details
Overview
SMCJ8.0CAHE3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features 8.0 V stand-off voltage (VWM), 1500 W peak pulse power (PPPM), and clamps to ≤13.6 V at 110.3 A (10/1000 μs waveform), with AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the SMCJ8.0CAHE3/9AT datasheet, SMCJ8.0CAHE3/9AT pinout, SMCJ8.0CAHE3/9AT application, or SMCJ8.0CAHE3/9AT equivalent, key selection criteria include bidirectional clamping capability, 13.6 V maximum clamping voltage at rated surge current, AEC-Q101 qualification status, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical bidirectional conduction enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM).
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation from –55 °C to +150 °C junction temperature. The 10/1000 μs surge waveform rating reflects standardized lightning and switching transient immunity per ANSI/IEEE C62.35.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 8.89 V / 9.83 V at 1.0 mA - Verified breakdown voltage range ensuring reliable turn-on margin |
| VC @ IPPM | ≤13.6 V at 110.3 A - Clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak transient energy handling capacity under standard test waveform |
| ID @ VWM | ≤1.0 μA - Low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial PCBs |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (symmetrical) | Bidirectional transient path | Both terminals function identically; no cathode band marking required for SMCJ8.0CAHE3/9AT |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity constraints |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive MOSFETs and ICs |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture-related delamination risk |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage performance across thermal and life cycles |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs against load dump and ESD events in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching transceiver IC. Use Value: Limits induced transients to ≤13.6 V, preventing latch-up or damage to 5 V tolerant CAN PHY inputs while maintaining signal integrity. |
Use Scenario: Safeguarding RS-485/RS-422 data lines in factory automation PLCs exposed to motor drive noise. IC Role / Device Role / Timing Role: Differential line protector between isolated bus transceivers and field wiring harnesses. Use Value: Withstands repetitive 1500 W surges without degradation, preserving communication uptime in electrically noisy environments. |
| Consumer Power Adapter Input | Telecom DC Power Feed |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after primary-side isolation. IC Role / Device Role / Timing Role: Standoff-rated clamp on 5–20 V output rails to absorb flyback spikes from synchronous rectifiers. Use Value: 8.0 V VWM aligns with USB PD minimum voltage, enabling precise clamping without false triggering during normal regulation. |
Use Scenario: DC feed protection in PoE-powered base stations where 48 V supply lines are susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional suppressor across DC input terminals upstream of DC-DC converters. Use Value: 1500 W PPPM rating handles telecom-grade surge waveforms (IEC 61000-4-5 Level 4), reducing need for multi-stage protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC8.0 | Unidirectional only; same VWM (8.0 V) but lacks bidirectional symmetry | Requires explicit polarity assignment; unsuitable for AC or floating differential lines | Select only when circuit topology guarantees unidirectional transient direction and space constraints favor smaller footprint |
| SMCJ8.0CAHM3/9AT | Halogen-free variant with identical electrical specs and AEC-Q101 qualification | No functional difference; differs only in material compliance (halogen-free vs. standard RoHS) | Choose HM3 suffix if halogen-free requirement is mandated by end-equipment environmental policy |
Compared with SMCJ8.0CAHE3/9AT, SAC8.0 requires polarity-aware layout and offers no bidirectional flexibility, while SMCJ8.0CAHM3/9AT provides identical protection performance with halogen-free construction-making HE3 optimal for general automotive and industrial use where halogen content is unrestricted.
Availability
SMCJ8.0CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer power adapter outputs, and telecom DC feed protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCJ8.0CAHE3/9AT 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 and automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive electronics, industrial controls, and telecom infrastructure requiring robust 1500 W surge handling and AEC-Q101 validation.
FAQ
What is the clamping voltage of SMCJ8.0CAHE3/9AT at its rated peak pulse current?
The SMCJ8.0CAHE3/9AT clamps to a maximum of 13.6 V when subjected to its rated peak pulse current of 110.3 A under the standard 10/1000 μs waveform. This value is measured at the device terminals with specified mounting conditions (0.31" × 0.31" copper pads), and defines the upper voltage limit imposed on protected circuits during surge events. The SMCJ8.0CAHE3/9AT maintains this clamping performance across its qualified operating temperature range.
Is SMCJ8.0CAHE3/9AT suitable for automotive applications?
Yes, SMCJ8.0CAHE3/9AT is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its construction includes glass-passivated junctions, MSL Level 1 moisture sensitivity rating, and guaranteed operation from –55 °C to +150 °C. The SMCJ8.0CAHE3/9AT meets automotive reliability requirements for temperature cycling, high-temperature reverse bias, and electrostatic discharge.
What does the "CA" suffix indicate in SMCJ8.0CAHE3/9AT?
The "CA" suffix in SMCJ8.0CAHE3/9AT denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive- and negative-polarity voltage spikes. Unlike unidirectional variants (e.g., SMCJ8.0A), the SMCJ8.0CAHE3/9AT has no cathode marking and functions identically regardless of terminal orientation-ideal for protecting AC-coupled lines, differential buses, or floating references where polarity is undefined.
What is the maximum reverse leakage current for SMCJ8.0CAHE3/9AT at its stand-off voltage?
The maximum reverse leakage current (ID) for SMCJ8.0CAHE3/9AT is 1.0 μA when biased at its 8.0 V stand-off voltage (VWM) and tested at 25 °C. This low leakage ensures minimal impact on signal integrity and power budget in high-impedance circuits such as sensor bias networks or precision reference paths. The SMCJ8.0CAHE3/9AT maintains this specification across its full operating temperature range, with leakage increasing predictably per datasheet derating curves.
How does the SMCJ8.0CAHE3/9AT package compare to SMA or SMB equivalents?
The SMCJ8.0CAHE3/9AT uses the SMC (DO-214AB) package, which offers higher power dissipation and lower thermal resistance than SMA (DO-214AC) or SMB (DO-214AA). With RθJA = 75 °C/W and RθJL = 15 °C/W, the SMCJ8.0CAHE3/9AT supports 1500 W peak pulse power-significantly greater than SMA/SMB variants limited to ~600 W. Its larger 8.0 mm × 8.0 mm pad requirement enables robust thermal management essential for automotive and industrial surge protection. The SMCJ8.0CAHE3/9AT is not pin-compatible with smaller packages due to differing lead spacing and body dimensions.
SMCJ8.0CAHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 110.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SMCJ8.0CAHE3/9AT FAQ
1.How can I place an order for SMCJ8.0CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0CAHE3/9AT 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 SMCJ8.0CAHE3/9AT reliable?
The price and inventory of SMCJ8.0CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8.0CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ8.0CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0CAHE3/9AT?
SMCJ8.0CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0CAHE3/9AT 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 SMCJ8.0CAHE3/9AT?
For technical support, including SMCJ8.0CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0CAHE3/9AT requirements.
6.How does Aetrix verify that SMCJ8.0CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0CAHE3/9AT 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 SMCJ8.0CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ8.0CAHE3/9AT?
All SMCJ8.0CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0CAHE3/9AT, 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 SMCJ8.0CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ8.0CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0CAHE3/9AT Tags
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