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Vishay General Semiconductor - Diodes Division SMCJ8.0CAHE3/57T
- Part No.:
- SMCJ8.0CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0CAHE3/57T.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,632
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Product details
Overview
SMCJ8.0CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 8.0 V stand-off voltage (VWM), 13.6 V maximum clamping voltage (VC) at 110.3 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the SMCJ8.0CAHE3/57T datasheet, SMCJ8.0CAHE3/57T pinout, SMCJ8.0CAHE3/57T application, or SMCJ8.0CAHE3/57T equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), junction temperature range (–55 to +150 °C), and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
The SMCJ8.0CAHE3/57T operates as a voltage-clamped crowbar device triggered by reverse-biased avalanche breakdown across both polarities. Its glass-passivated junction ensures stable VBR (8.89–9.83 V at 1 mA) and low incremental surge resistance, enabling sub-nanosecond response to transients induced by inductive switching or ESD events.
Designed for surface-mount automated placement, it meets MSL level 1 per J-STD-020 (peak reflow 260 °C) and supports bidirectional surge suppression without polarity marking. The SMC (DO-214AB) package provides mechanical robustness and thermal dissipation via 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 8.89 V / 9.83 V at 1 mA - Confirmed breakdown threshold ensuring reliable turn-on margin above VWM |
| VC @ IPPM | 13.6 V at 110.3 A - Clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 1500 W - Peak transient energy absorption capability under standardized waveform |
| ID @ VWM | 50 μA - Low leakage current preserving signal integrity and power efficiency |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 75 °C/W - Thermal resistance defining derating behavior on standard PCB pad layout |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical cathode/anode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; reverse-biased terminal during negative transients | One of two identical terminals; bidirectional conduction eliminates need for orientation during placement |
| Cathode | Current exit point in forward bias; reverse-biased terminal during positive transients | Electrically identical to Anode; device functions identically regardless of terminal assignment |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Glass passivated junction | Ensures long-term stability of VBR and leakage performance across humidity and thermal stress |
| MSL Level 1 | Zero moisture sensitivity - safe for standard reflow without baking or dry-pack requirements |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during fast transients, protecting 3.3 V and 5 V logic interfaces |
| Matte tin plated leads | Complies with J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protection of CAN/LIN bus transceivers and MEMS pressure sensors against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: With 13.6 V clamping and 1500 W rating, SMCJ8.0CAHE3/57T limits transient voltage to within 10% of 12 V rail tolerance, preventing latch-up in automotive-grade op-amps and ADCs. |
Use Scenario: Guarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to clamp common-mode transients while maintaining loop accuracy. Use Value: 8.0 V VWM aligns with typical 24 V supply referenced analog front-end designs, and 50 μA leakage avoids offset error in precision current sensing. |
| Telecom Line Card Protection | Consumer Power Adapter Output |
Use Scenario: Secondary-side surge protection on Ethernet PHY power rails and auxiliary bias supplies in base station line cards. IC Role / Device Role / Timing Role: Fast-response TVS suppressing lightning-induced surges coupled through transformer windings or shared ground paths. Use Value: Sub-1 ns response time and 75 °C/W RθJA enable effective coordination with upstream GDTs or MOVs without thermal runaway risk. |
Use Scenario: Output rail protection in USB-C PD adapters where 5 V/9 V/15 V outputs require fail-safe overvoltage suppression. IC Role / Device Role / Timing Role: Bidirectional clamp placed after DC-DC converter output filter to absorb regulator fault transients and backfeed spikes. Use Value: AEC-Q101 qualification and RoHS compliance support global safety certifications (UL 497B, E136766), reducing qualification effort for end-product approvals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CAHE3/52T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM and VC | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load dump | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 2 |
| SMCJ8.0CAHM3/57T | Halogen-free variant; identical electrical specs and AEC-Q101 qualification | No functional difference; required only where halogen-free compliance is mandated by OEM spec | Choose for automotive Tier 1 programs requiring full material declaration and halogen-free BOM compliance |
Compared with SMBJ8.0CAHE3/52T, SMCJ8.0CAHE3/57T delivers 2.5× higher surge energy handling in the same footprint family; versus SMCJ8.0CAHM3/57T, it offers identical protection performance with standard RoHS compliance - making SMCJ8.0CAHE3/57T the default choice for cost-sensitive AEC-Q101 applications without halogen restrictions.
Availability
SMCJ8.0CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O protection, and telecom line card designs requiring stable component supply, AEC-Q101 validation, and UL 497B recognition.
Supply support for SMCJ8.0CAHE3/57T 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive-grade robustness, standardized surge waveforms (10/1000 μs), and seamless integration into automated SMT assembly lines.
FAQ
What does the "CA" suffix indicate in SMCJ8.0CAHE3/57T?
The "CA" suffix denotes a bidirectional configuration - meaning the SMCJ8.0CAHE3/57T provides symmetrical clamping for both positive and negative voltage transients without polarity dependence. Unlike unidirectional variants (e.g., SMCJ8.0A), it has no cathode band marking and is electrically identical in either orientation, simplifying layout and assembly for AC-coupled or floating signal lines.
Is SMCJ8.0CAHE3/57T qualified for automotive use?
Yes, SMCJ8.0CAHE3/57T carries AEC-Q101 qualification, verified per stress tests including HTGB, HTRB, temperature cycling, and ESD (HBM ≥ 8 kV). Its HE3 suffix explicitly indicates RoHS-compliant and AEC-Q101-qualified construction, making it suitable for under-hood and cabin applications such as body control modules and ADAS sensor interfaces.
What is the maximum clamping voltage of SMCJ8.0CAHE3/57T under surge conditions?
The maximum clamping voltage (VC) of SMCJ8.0CAHE3/57T is 13.6 V when subjected to its rated peak pulse current of 110.3 A using the 10/1000 μs waveform. This value is measured at the device terminals and represents the upper bound of voltage seen by protected circuitry during worst-case transient events, ensuring compatibility with 12 V nominal systems and 5 V logic interfaces.
How does the SMC (DO-214AB) package of SMCJ8.0CAHE3/57T compare thermally to SMB (DO-214AA)?
The SMC (DO-214AB) package used by SMCJ8.0CAHE3/57T delivers significantly better thermal performance than SMB: its typical junction-to-ambient thermal resistance (RθJA) is 75 °C/W versus ~100–120 °C/W for SMB variants. This allows SMCJ8.0CAHE3/57T to sustain higher surge repetition rates and maintain lower junction temperatures on standard 8.0 mm × 8.0 mm copper pads, critical for automotive and industrial deployments.
Does SMCJ8.0CAHE3/57T meet UL 497B certification?
Yes, SMCJ8.0CAHE3/57T is Underwriters Laboratories recognized under UL 497B (QVGQ2) and listed in UL file E136766 for both unidirectional and bidirectional transient protectors. This certification validates its suitability for primary and secondary circuit protection in telecom, industrial, and automotive equipment where regulatory safety compliance is mandatory.
SMCJ8.0CAHE3/57T 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)
SMCJ8.0CAHE3/57T FAQ
1.How can I place an order for SMCJ8.0CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0CAHE3/57T 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 SMCJ8.0CAHE3/57T reliable?
The price and inventory of SMCJ8.0CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8.0CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ8.0CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0CAHE3/57T?
SMCJ8.0CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0CAHE3/57T 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 SMCJ8.0CAHE3/57T?
For technical support, including SMCJ8.0CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0CAHE3/57T requirements.
6.How does Aetrix verify that SMCJ8.0CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0CAHE3/57T 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 SMCJ8.0CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ8.0CAHE3/57T?
All SMCJ8.0CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0CAHE3/57T, 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 SMCJ8.0CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ8.0CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0CAHE3/57T Tags
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