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Vishay General Semiconductor - Diodes Division 1.5SMC68CA-M3/57T
- Part No.:
- 1.5SMC68CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CA-M3/57T.pdf
- Description:
- TVS DIODE 58.1VWM 92VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,149
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Product details
Overview
1.5SMC68CA-M3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 68 V standoff voltage (VWM), 74.5 V minimum breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), and clamps to ≤103 V at 16.3 A peak pulse current - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC68CA-M3/57T datasheet, 1.5SMC68CA-M3/57T pinout, 1.5SMC68CA-M3/57T application, or 1.5SMC68CA-M3/57T equivalent, this device delivers AEC-Q101-qualified surge immunity in SMC (DO-214AB) packaging with halogen-free, RoHS-compliant construction and MSL Level 1 moisture sensitivity.
Technical Context
The 1.5SMC68CA-M3/57T operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±74.5 V in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at 58.1 V), while its low incremental surge resistance enables rapid energy diversion during ESD or lightning-induced surges.
Thermally, it sustains 150 °C maximum junction temperature with 75 °C/W junction-to-ambient thermal resistance (RθJA) on standard 8 mm × 8 mm copper pads. The device meets J-STD-020 MSL Level 1 and supports reflow up to 260 °C peak, making it suitable for high-reliability automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 58.1 V - Maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (Breakdown Voltage) | 74.5 V min @ 1 mA - Guaranteed avalanche initiation threshold; ensures predictable turn-on under transient stress. |
| VC (Clamping Voltage) | ≤103 V @ 16.3 A (10/1000 μs) - Peak voltage seen by downstream components during worst-case surge; limits stress on ICs/MOSFETs. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for standardized 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance. |
| ID (Reverse Leakage) | <1 μA @ 58.1 V - Negligible standby current; avoids loading sensitive analog or low-power circuits. |
| TJ max | 150 °C - Enables operation in under-hood automotive or industrial enclosures without derating below ambient. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
Package: SMC (DO-214AB), bidirectional configuration - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR - eliminates orientation concerns during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN, sensor bridges) without external polarity management. |
| 1500 W peak pulse rating | Withstands 10/1000 μs surges up to 16.3 A - sufficient for IEC 61000-4-5 4 kV (line-earth) and 2 kV (line-line) tests. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and body electronics per stress test requirements. |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets EU Directive 2011/65/EU and JEDEC J-STD-20D; supports green manufacturing and end-of-life recycling mandates. |
| MSL Level 1, 260 °C peak reflow | Eliminates bake-out requirement prior to assembly; reduces process complexity and risk of moisture-induced popcorning. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting wheel speed, pressure, or temperature sensors exposed to load dump and ISO 7637-2 pulses in vehicle chassis wiring. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential sensor output lines to clamp ±100 V transients before they reach signal conditioning amplifiers. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADCs while maintaining signal integrity below 58.1 V normal operation. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs subjected to ground loop surges and EFT bursts. IC Role / Device Role / Timing Role: Placed between A/B bus lines and ground to suppress common-mode transients exceeding ±74.5 V without affecting DC bias or data eye. Use Value: Ensures >100,000 surge cycles without degradation, preserving communication uptime in harsh electromagnetic environments. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Stage |
Use Scenario: Front-end protection of DSL or POTS line cards against lightning-induced surges entering via telephone jacks. IC Role / Device Role / Timing Role: Bidirectional TVS connected line-to-line and line-to-ground to divert multi-kV transients before reaching transformer isolation and PHY ICs. Use Value: Clamps to ≤103 V within nanoseconds, limiting stress on 100 V-rated Ethernet PHYs and enabling UL 497B certification. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home devices, preventing damage from capacitor discharge or regulator fault. IC Role / Device Role / Timing Role: Mounted across DC output rails to absorb 1500 W surges from upstream switching noise or short-circuit recovery events. Use Value: Maintains <1 μA leakage at 58.1 V, avoiding standby power waste while delivering fail-safe shutdown under overvoltage conditions. |
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), smaller SMB package (DO-214AA), 64 V VWM, 71.1 V VBR min | Targeted at space-constrained consumer electronics; insufficient for IEC 61000-4-5 Level 4 industrial use | Select when board area is critical and surge energy is ≤600 W; verify thermal margin on reduced pad area. |
| 1.5KE68CA | Through-hole TO-204AE (DO-41), same 68 V VWM, but higher RθJA (~100 °C/W) and no AEC-Q101 qualification | Legacy designs requiring axial lead replacement; not suitable for automated SMT or automotive qualification | Choose only for repair or legacy through-hole systems; avoid for new automotive or high-volume SMT production. |
Compared with SMBJ64CA and 1.5KE68CA, the 1.5SMC68CA-M3/57T uniquely combines 1500 W surge capability, AEC-Q101 qualification, halogen-free compliance, and SMC package scalability - making it the optimal choice for next-generation automotive and industrial SMT designs requiring certified reliability and high-energy handling.
Availability
1.5SMC68CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, telecom line cards, and consumer power adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC68CA-M3/57T 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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5SMC Series was engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping behavior, AEC-Q101 validation, and SMT-ready packaging for mission-critical overvoltage protection.
FAQ
What is the standoff voltage (VWM) of the 1.5SMC68CA-M3/57T?
The 1.5SMC68CA-M3/57T has a standoff voltage (VWM) of 58.1 V, meaning it remains non-conductive up to this reverse voltage level under normal operation. This value ensures compatibility with 48 V and 60 V nominal systems while providing adequate margin before avalanche conduction begins at 74.5 V minimum breakdown.
Is the 1.5SMC68CA-M3/57T suitable for automotive applications?
Yes, the 1.5SMC68CA-M3/57T is AEC-Q101 qualified and specifically designed for automotive use. Its halogen-free M3 construction, MSL Level 1 rating, and validated performance across -65 °C to +150 °C junction temperature make it appropriate for engine control, ADAS sensors, and body electronics where reliability under transient stress is critical.
How does the 1.5SMC68CA-M3/57T differ from unidirectional variants like 1.5SMC68A-M3/57T?
The 1.5SMC68CA-M3/57T is bidirectional - it clamps symmetrically in both polarities with no cathode marking - whereas the unidirectional 1.5SMC68A-M3/57T has a marked cathode band and only conducts in reverse bias. This makes the "CA" version ideal for AC-coupled or floating lines such as RS-485, CAN, or transformer-isolated interfaces.
What is the clamping voltage (VC) of the 1.5SMC68CA-M3/57T at rated surge current?
The 1.5SMC68CA-M3/57T clamps to a maximum of 103 V at 16.3 A peak pulse current (10/1000 μs waveform). This VC value defines the upper voltage limit imposed on protected circuitry during surge events and is verified per industry-standard test conditions with specified PCB pad layout.
Does the 1.5SMC68CA-M3/57T require special PCB layout considerations?
Yes - optimal performance requires mounting the 1.5SMC68CA-M3/57T on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W pulse power and thermal dissipation. Smaller pads reduce surge capability and increase junction temperature, potentially triggering premature failure during repetitive transients.
1.5SMC68CA-M3/57T 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC68CA-M3/57T FAQ
1.How can I place an order for 1.5SMC68CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CA-M3/57T 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 1.5SMC68CA-M3/57T reliable?
The price and inventory of 1.5SMC68CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC68CA-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CA-M3/57T?
1.5SMC68CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CA-M3/57T 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 1.5SMC68CA-M3/57T?
For technical support, including 1.5SMC68CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CA-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC68CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CA-M3/57T 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 1.5SMC68CA-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CA-M3/57T?
All 1.5SMC68CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CA-M3/57T, 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 1.5SMC68CA-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC68CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68CA-M3/57T Tags
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