My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC68CA-E3/9AT
- Part No.:
- 1.5SMC68CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CA-E3/9AT.pdf
- Description:
- TVS DIODE 58.1VWM 92VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,496
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC68CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal 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 operates across –65 °C to +150 °C. It is used in automotive sensor interfaces and industrial I/O protection where fast response and low clamping are critical.
For engineers reviewing the 1.5SMC68CA-E3/9AT datasheet, 1.5SMC68CA-E3/9AT pinout, 1.5SMC68CA-E3/9AT application, or 1.5SMC68CA-E3/9AT equivalent, this page delivers verified electrical parameters, SMC (DO-214AB) package details, bidirectional clamping behavior, thermal resistance (RθJA = 75 °C/W), and RoHS-compliant commercial-grade sourcing via Aetrix Electronics.
Technical Context
The 1.5SMC68CA-E3/9AT implements a glass-passivated silicon junction optimized for transient suppression under repetitive 10/1000 µs surge waveforms at 0.01% duty cycle. Its bidirectional symmetry ensures identical clamping performance in both polarities, with no polarity marking on the case.
It achieves fast response time (<1 ps) due to avalanche breakdown physics and maintains low incremental surge resistance to minimize voltage overshoot during high-current transients. Thermal design relies on 0.31" × 0.31" copper pads per terminal to sustain 1500 W peak power without exceeding TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA - defines reliable avalanche initiation threshold in both directions |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 92.0 V at 16.3 A - clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - peak surge handling capacity suitable for lightning and inductive switching events |
| TJ range | –65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| RθJA | 75 °C/W - requires minimum 8.0 mm × 8.0 mm copper pad per terminal for thermal management |
| Package | SMC (DO-214AB) - surface-mount footprint compatible with automated assembly and IPC-7351B standards |
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 point in forward bias; common terminal in bidirectional operation | No polarity marking - symmetrical terminals enable AC-coupled or floating-line protection without orientation constraints |
| Cathode | Current exit point in forward bias; common terminal in bidirectional operation | Identical physical structure to anode - bidirectional conduction confirmed by VBR/VC symmetry in datasheet tables |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both polarities - eliminates need for polarity-aware layout in differential or AC signal paths |
| 1500 W surge rating | Validated per 10/1000 µs waveform - protects against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 transients |
| Glass-passivated junction | Stable breakdown characteristics over temperature and lifetime - reduces parameter drift vs. epoxy-passivated alternatives |
| RoHS-compliant (E3) | Lead-free matte tin terminations, J-STD-002/JESD 22-B102 solderable - supports lead-free reflow and long-term supply chain compliance |
| Low clamping ratio | VC/VBR ≈ 1.37 - tight voltage control minimizes overvoltage exposure to protected ICs like CAN transceivers or ADC front-ends |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal line and ground to clamp transients before they reach the transceiver or ADC input stage. Use Value: Clamps 1500 W surges to ≤92.0 V while maintaining <1 µA leakage at 58.1 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V systems. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Parallel-connected TVS on each 24 V DC input channel to shunt inductive kickback energy away from optocoupler or Schmitt trigger inputs. Use Value: Withstands repetitive 10/1000 µs pulses at 0.01% duty cycle and operates reliably from –40 °C to +85 °C ambient, ensuring uptime in factory-floor environments. |
| Telecom Line Card Surge Protection | Consumer Power Adapter EMI Filtering |
|
Use Scenario: Secondary-side transient suppression on Ethernet PHY power rails and data lines in enterprise switches and routers. IC Role / Device Role / Timing Role: Bidirectional clamping device across isolated DC-DC output or MDI pair to suppress induced lightning surges per IEC 61000-4-5. Use Value: 92.0 V clamping voltage limits stress on 12 V or 3.3 V LDOs and Ethernet magnetics, while SMC package allows dense placement near connectors. |
Use Scenario: Input-stage surge protection in wall-mounted AC-DC adapters for smart home devices subjected to mains-borne transients. IC Role / Device Role / Timing Role: Across primary-side bulk capacitor or secondary-side 5 V/9 V output rail to absorb switching noise and external surges. Use Value: 1500 W rating handles EN 61000-4-4 EFT bursts; RoHS-compliant E3 suffix meets global regulatory requirements for consumer electronics. |
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) | Suitable for space-constrained, lower-energy environments (e.g., USB ports, low-power sensors); not recommended for 1500 W lightning events | Select SMBJ64CA only when board area is critical and surge threat level is limited to IEC 61000-4-4 Level 3. |
| 1.5KE68CA | Same VBR/VC, but axial DO-201 package (larger, through-hole), higher RθJA (not specified, ~100 °C/W typical) | Used in legacy designs or high-reliability through-hole assemblies; incompatible with SMT-only production flows | Choose 1.5KE68CA only if existing tooling mandates axial components or thermal derating permits larger heatsinking. |
Compared with SMBJ64CA and 1.5KE68CA, the 1.5SMC68CA-E3/9AT uniquely balances 1500 W surge capability, SMC surface-mount compatibility, and bidirectional symmetry-making it optimal for new automotive and industrial SMT designs requiring robust, compact, and polarity-agnostic protection.
Availability
1.5SMC68CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line cards, and consumer power adapter designs requiring stable component supply, RoHS compliance, and repeatable surge performance.
Supply support for 1.5SMC68CA-E3/9AT 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, efficiency, and application-specific optimization.
The 1.5SMC68CA-E3/9AT belongs to Vishay's TRANSZORB® SMC series-engineered for high-energy transient suppression in automotive, industrial, and telecom systems where fast response, low clamping, and AEC-Q101 readiness are essential.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC68CA-E3/9AT?
The 1.5SMC68CA-E3/9AT has a specified breakdown voltage range of 64.6 V to 71.4 V at 1.0 mA test current, representing ±5% tolerance around the nominal 68 V rating. This tight VBR window ensures consistent clamping onset across production lots and temperature extremes, critical for protecting voltage-sensitive interfaces like CAN FD transceivers or precision ADC references.
Is the 1.5SMC68CA-E3/9AT unidirectional or bidirectional?
The 1.5SMC68CA-E3/9AT is a bidirectional TVS diode, as confirmed by the "CA" suffix and symmetric electrical characteristics in the Vishay datasheet. Both terminals behave identically-no cathode band marking is present-and VBR, VC, and IPPM values are identical in either polarity, enabling use in AC-coupled, differential, or floating signal paths without orientation concerns.
What does the "E3/9AT" suffix mean in 1.5SMC68CA-E3/9AT?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "9AT" specifies packaging in a 13-inch diameter plastic tape-and-reel format containing 3500 units. This configuration supports high-volume SMT placement and aligns with IPC-7351B land patterns for the SMC (DO-214AB) footprint, ensuring compatibility with standard pick-and-place equipment.
Can the 1.5SMC68CA-E3/9AT be used in automotive applications?
Yes-the 1.5SMC68CA-E3/9AT meets AEC-Q101 qualification when ordered with HE3 or HM3 suffixes; however, the E3/9AT variant is commercial-grade and not AEC-Q101 certified. For non-safety-critical automotive subsystems (e.g., infotainment power rails or body control module sensors), the 1.5SMC68CA-E3/9AT provides validated surge performance and thermal robustness up to +150 °C junction temperature.
What is the maximum clamping voltage of the 1.5SMC68CA-E3/9AT under surge conditions?
The 1.5SMC68CA-E3/9AT clamps to a maximum of 92.0 V at its rated peak pulse current of 16.3 A (10/1000 µs waveform). This value is measured and guaranteed per Vishay's test conditions (mounted on 8.0 mm × 8.0 mm copper pads), directly defining the upper voltage limit imposed on protected circuitry during worst-case transients.
1.5SMC68CA-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for 1.5SMC68CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CA-E3/9AT 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 1.5SMC68CA-E3/9AT reliable?
The price and inventory of 1.5SMC68CA-E3/9AT 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-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CA-E3/9AT?
1.5SMC68CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CA-E3/9AT 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 1.5SMC68CA-E3/9AT?
For technical support, including 1.5SMC68CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC68CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CA-E3/9AT 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 1.5SMC68CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CA-E3/9AT?
All 1.5SMC68CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CA-E3/9AT, 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 1.5SMC68CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC68CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68CA-E3/9AT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
