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Vishay General Semiconductor - Diodes Division 1.5SMC68CAHE3_A/I
- Part No.:
- 1.5SMC68CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CAHE3_A/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,299
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Product details
Overview
1.5SMC68CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features a 68 V breakdown voltage (VBR min/max = 64.6–71.4 V), 1500 W peak pulse power (10/1000 µs), clamping voltage of 92.0 V at 16.3 A, and AEC-Q101 qualification for automotive use - deployed in CAN bus interfaces, sensor supply rails, and ECU input protection.
For engineers reviewing the 1.5SMC68CAHE3_A/I datasheet, 1.5SMC68CAHE3_A/I pinout, 1.5SMC68CAHE3_A/I application, or 1.5SMC68CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.44), MSL Level 1 moisture sensitivity, and RoHS-compliant matte tin terminations suitable for lead-free reflow.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VC, and IPPM specifications in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and fast response (<1 ps), while the SMC package provides robust thermal dissipation (RθJL = 15 °C/W) under repetitive surge conditions.
The device complies with AEC-Q101 stress testing for automotive environments and meets UL 497B recognition for protector classification. It is rated for continuous operation from –65 °C to +150 °C junction temperature and supports 0.01% duty cycle repetitive surges per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines precise overvoltage triggering threshold for bidirectional protection |
| VWM | 58.1 V - maximum continuous working voltage before leakage exceeds 1.0 µA, ensuring no false triggering during normal operation |
| VC @ IPPM | 92.0 V at 16.3 A (10/1000 µs) - clamping voltage limits downstream IC stress to safe levels during transients |
| PPPM | 1500 W - peak surge energy handling capacity compatible with IEC 61000-4-5 Level 4 (4 kV/2 Ω) requirements |
| IPPM | 16.3 A - maximum non-repetitive surge current supported without degradation |
| TJ max | +150 °C - enables reliable operation in under-hood automotive and industrial power supply environments |
| Package | SMC (DO-214AB) - surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal footprint for PCB-level heat spreading |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | One side of symmetrical bidirectional structure; no polarity marking required |
| Cathode | Current exit terminal in forward bias | Other side of symmetrical bidirectional structure; identical electrical role to Anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, UHAST, and mechanical shock per JESD22 |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 combination wave surges up to 4 kV without failure or parameter shift |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or damage to protected ICs |
| MSL Level 1, 260 °C peak | Enables standard lead-free reflow assembly without pre-baking or special handling |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal cycling |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting CAN_H/CAN_L differential pair against ESD and load dump-induced transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt surge energy before it reaches CAN transceiver. Use Value: Maintains signal integrity by limiting common-mode voltage excursion to ≤92 V while preserving <10 pF junction capacitance for minimal data rate impact. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Standoff protector on sensor output line, absorbing induced lightning surges from long cable runs. Use Value: Prevents sensor output stage destruction during 1 kV/500 A surge events while maintaining <1 µA leakage at 58.1 V operating voltage. |
| Power Supply Input Protection | USB Port ESD Protection |
|
Use Scenario: Secondary-side overvoltage suppression on 12 V/24 V DC inputs of infotainment head units and ADAS modules. IC Role / Device Role / Timing Role: Fast-acting crowbar element that activates within picoseconds to clamp transients exceeding 68 V. Use Value: Enables compliance with ISO 7637-2 Pulse 1/2a/3a immunity tests without requiring additional filtering or derating of upstream regulators. |
Use Scenario: Board-level ESD protection for USB 2.0 D+/D− lines in portable diagnostic tools and telematics gateways. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector to divert ±8 kV contact discharge. Use Value: Provides sub-100 ns response with <10 pF capacitance, avoiding signal integrity loss while meeting IEC 61000-4-2 Level 4 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ68CA | Lower PPPM (600 W), same VBR range, SMB package (smaller footprint, higher RθJA) | Preferred for space-constrained consumer electronics where 600 W surge margin suffices | Select when board area is limited and full 1500 W rating is not required; verify thermal derating at elevated ambient temperatures |
| 1.5KE68CA | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly | Used in legacy industrial controls or repair scenarios requiring through-hole replacement | Choose only for manual assembly or backward compatibility; not suitable for automated production or high-density layouts |
Compared with 1.5SMC68CAHE3_A/I, SMBJ68CA offers smaller size but reduced surge margin, while 1.5KE68CA retains identical protection performance but requires PCB redesign for through-hole mounting - making 1.5SMC68CAHE3_A/I optimal for new automotive SMT designs needing AEC-Q101 validation and 1500 W capability.
Availability
1.5SMC68CAHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and USB-based telematics devices requiring stable component supply, AEC-Q101 qualification, and high-reliability surge protection.
Supply support for 1.5SMC68CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The 1.5SMC Series was developed specifically for robust, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where high peak power, low clamping, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC68CAHE3_A/I at its rated peak pulse current?
The 1.5SMC68CAHE3_A/I has a maximum clamping voltage (VC) of 92.0 V at its rated peak pulse current (IPPM) of 16.3 A, measured using the standard 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and reflects the actual voltage seen by protected circuitry during surge events - critical for validating safe operating margins of downstream ICs.
Is the 1.5SMC68CAHE3_A/I suitable for automotive applications?
Yes, the 1.5SMC68CAHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix and "_A" revision code. It undergoes rigorous stress testing including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making it appropriate for engine control units, body electronics, and ADAS modules where reliability under thermal and mechanical stress is essential.
What does the "CA" suffix indicate in 1.5SMC68CAHE3_A/I?
The "CA" suffix in 1.5SMC68CAHE3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity. This eliminates the need for orientation during placement and simplifies design for AC-coupled or differential signal lines such as CAN, RS-485, or USB.
How does the 1.5SMC68CAHE3_A/I differ from unidirectional variants like 1.5SMC68AHE3_A/I?
The 1.5SMC68CAHE3_A/I is bidirectional with no polarity marking and equal VBR/VC in both directions, whereas 1.5SMC68AHE3_A/I is unidirectional and features a cathode band marking. The unidirectional version exhibits forward conduction below ~0.7 V and blocks only in reverse - making it unsuitable for AC or differential signals unless paired with external diodes. For CAN or Ethernet protection, 1.5SMC68CAHE3_A/I is the correct choice.
What is the maximum junction temperature rating for the 1.5SMC68CAHE3_A/I?
The 1.5SMC68CAHE3_A/I has a maximum junction temperature (TJ) rating of +150 °C, verified per AEC-Q101 requirements. This allows continuous operation in under-hood automotive environments and high-power industrial enclosures. Thermal design must account for RθJL = 15 °C/W and recommended 8.0 mm × 8.0 mm copper pads to maintain safe junction temperatures under sustained power dissipation.
1.5SMC68CAHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC68CAHE3_A/I FAQ
1.How can I place an order for 1.5SMC68CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/I reliable?
The price and inventory of 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CAHE3_A/I?
1.5SMC68CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/I?
For technical support, including 1.5SMC68CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CAHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC68CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CAHE3_A/I?
All 1.5SMC68CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC68CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68CAHE3_A/I Tags
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