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Vishay General Semiconductor - Diodes Division 1.5SMC68CAHM3_A/I
- Part No.:
- 1.5SMC68CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CAHM3_A/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,852
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Product details
Overview
1.5SMC68CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 μs), 68 V breakdown voltage (VBR min 64.6 V, max 71.4 V), and 92 V maximum clamping voltage (VC) at 16.3 A peak pulse current - deployed on automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the 1.5SMC68CAHM3_A/I datasheet, 1.5SMC68CAHM3_A/I pinout, 1.5SMC68CAHM3_A/I application, or 1.5SMC68CAHM3_A/I equivalent, this part delivers AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and fast response time for robust ESD and lightning transient suppression in space-constrained PCB layouts.
Technical Context
The 1.5SMC68CAHM3_A/I operates as a bidirectional voltage-clamping device, leveraging a glass-passivated silicon junction to suppress transients in both polarities without polarity marking. Its 10/1000 μs waveform rating defines standardized surge immunity under IEC 61000-4-5 Level 4 conditions.
Thermal performance is characterized by RθJA = 75 °C/W (junction-to-ambient) and RθJL = 15 °C/W (junction-to-leads), enabling reliable operation up to TJ = +150 °C. It meets J-STD-020 MSL Level 1 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA test current - defines precise voltage threshold where clamping begins in either direction |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 92 V at 16.3 A - clamped voltage during full 1500 W surge, limiting downstream IC stress |
| PPPM | 1500 W (10/1000 μs waveform) - enables protection against lightning-induced surges per IEC 61000-4-5 |
| TJ range | –65 °C to +150 °C - supports under-hood automotive and industrial ambient environments |
| Package | SMC (DO-214AB) - 7.75 mm × 6.22 mm footprint with matte tin-plated leads, compatible with automated SMT placement |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - no functional distinction in layout |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal completing symmetrical clamping path - requires no orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse power | Withstands 10/1000 μs surges typical of ISO 7637-2 and IEC 61000-4-5 test profiles |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for automotive and industrial end equipment |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard 260 °C reflow without baking preconditioning |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under ±1 kV ESD (IEC 61000-4-2) and 40 V/100 ms load dump (ISO 7637-2 Pulse 5a), preventing latch-up in downstream op-amps and ADCs. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring transients and ground bounce. IC Role / Device Role / Timing Role: Standoff voltage (58.1 V) ensures stable operation during normal 24 V DC switching while clamping >1 kV surges within 1 ns. Use Value: Eliminates need for external series impedance or RC filtering, reducing BOM count and board area versus discrete Zener+capacitor solutions. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Feedback Protection |
Use Scenario: Shielding Ethernet PHY interface and RS-485 transceivers on telecom line cards from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Placed between differential pair and transceiver IC to limit common-mode overvoltage without distorting signal rise/fall times. Use Value: 92 V clamping voltage ensures transceiver absolute maximum ratings (e.g., ±15 V common-mode range) are never exceeded during 1.5 kV surge tests. |
Use Scenario: Securing hall-effect sensor outputs and encoder feedback lines in BLDC motor drives exposed to commutation noise and back-EMF spikes. IC Role / Device Role / Timing Role: Fast-response (<1 ns) clamping across low-voltage analog feedback paths (e.g., 0–5 V ratiometric signals). Use Value: Prevents false triggering of overcurrent protection due to transient-induced voltage excursions beyond ADC reference rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Lower PPPM (600 W), same VBR range (60.8–67.2 V), SMB package (smaller footprint, higher RθJA) | Not rated for AEC-Q101; limited to commercial-grade consumer/industrial use | Select when board space is constrained and automotive qualification is unnecessary |
| 1.5KE68CA | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly | Requires wave soldering or hand-soldering; unsuitable for high-volume automated production | Choose only for legacy through-hole designs or prototyping where rework flexibility outweighs production efficiency |
Compared with SMBJ64CA and 1.5KE68CA, the 1.5SMC68CAHM3_A/I uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and full 1500 W surge capability - making it the preferred choice for automotive and high-reliability industrial PCBs requiring zero layout change for qualification-grade protection.
Availability
1.5SMC68CAHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, telecom line card development, and consumer appliance motor control systems requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC68CAHM3_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, power efficiency, and automotive-grade validation.
The 1.5SMC Series targets high-energy transient suppression in space-constrained applications, delivering AEC-Q101 qualified TVS performance for automotive, industrial, and telecom infrastructure where robustness and repeatability are critical.
FAQ
What is the clamping voltage of the 1.5SMC68CAHM3_A/I under a 1500 W surge?
The 1.5SMC68CAHM3_A/I clamps to a maximum of 92 V at its rated peak pulse current of 16.3 A (10/1000 μs waveform). This value is measured per standard test conditions defined in the Vishay datasheet (Document Number: 88303), ensuring predictable overvoltage limiting for downstream 3.3 V, 5 V, or 24 V circuits protected by the 1.5SMC68CAHM3_A/I.
Is the 1.5SMC68CAHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC68CAHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability testing. It is explicitly intended for use in automotive sensor interfaces, body control modules, and infotainment systems where sustained operation from –40 °C to +125 °C ambient and surge immunity per ISO 7637-2 are required - confirmed in Vishay's 1.5SMC Series qualification report.
What does the "CA" suffix mean in 1.5SMC68CAHM3_A/I?
The "CA" suffix in 1.5SMC68CAHM3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions without polarity dependency. This distinguishes it from unidirectional variants (e.g., 1.5SMC68AHM3_A/I) and enables direct placement on AC-coupled or floating signal lines where polarity is undefined or reversible.
What is the standoff voltage rating for the 1.5SMC68CAHM3_A/I?
The standoff voltage (VWM) for the 1.5SMC68CAHM3_A/I is 58.1 V - the maximum DC or continuous reverse operating voltage that can be applied without exceeding 1 μA leakage current. This parameter ensures stable operation during nominal 48 V or 24 V system conditions while preserving headroom for transient clamping, as verified in the Electrical Characteristics table of the Vishay 88303 datasheet.
Does the 1.5SMC68CAHM3_A/I require special PCB layout considerations?
No special layout is needed beyond Vishay's recommended SMC pad dimensions (0.305" × 0.220", or 7.75 mm × 5.59 mm copper area per terminal). The 1.5SMC68CAHM3_A/I benefits from short, low-inductance traces to the protected node and ground plane, but its symmetrical bidirectional structure eliminates orientation constraints - simplifying routing and reducing placement errors compared to unidirectional TVS diodes.
1.5SMC68CAHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC68CAHM3_A/I FAQ
1.How can I place an order for 1.5SMC68CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/I reliable?
The price and inventory of 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CAHM3_A/I?
1.5SMC68CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/I?
For technical support, including 1.5SMC68CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC68CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CAHM3_A/I?
All 1.5SMC68CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CAHM3_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 1.5SMC68CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC68CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68CAHM3_A/I Tags
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