My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC68CAHE3/57T
- Part No.:
- 1.5SMC68CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CAHE3/57T.pdf
- Description:
- TVS DIODE 58.1VWM 92VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,677
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC68CAHE3/57T 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 standoff voltage (VWM), 71.4 V maximum breakdown voltage (VBR), 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.
For engineers reviewing the 1.5SMC68CAHE3/57T datasheet, 1.5SMC68CAHE3/57T pinout, 1.5SMC68CAHE3/57T application, or 1.5SMC68CAHE3/57T equivalent, this device serves as a robust, surface-mount solution for protecting sensitive ICs and MOSFETs against lightning-induced transients and inductive switching spikes in automotive and industrial environments.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable clamping performance and low incremental surge resistance under repetitive 10/1000 μs surges at 0.01% duty cycle.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA) is 75 °C/W, and it delivers consistent clamping behavior when mounted on 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 68 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 64.6–71.4 V at 1 mA - Voltage at which device enters avalanche breakdown; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 92.0 V at 16.3 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 1500 W - Maximum single-pulse energy handling capability; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID (Leakage Current) | 1.0 μA max at 68 V - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max | 150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and high-ambient industrial settings. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Matte tin-plated leads, RoHS-compliant, halogen-free option available (HM3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Acts as cathode in one polarity and anode in the other; symmetrical conduction enables dual-direction surge suppression without orientation constraints. |
| Cathode | Transient current exit point (bidirectional) | Functionally identical to Anode due to bidirectional design; terminals are interchangeable in layout-no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 1500 W surge rating | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and clamping performance across temperature and lifetime. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow soldering without preconditioning or special handling requirements. |
| AEC-Q101 qualification (HE3 suffix) | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field reliability. |
| Low clamping ratio (VC/VBR ≈ 1.29) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices, improving system-level robustness. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair in automotive ECUs against load dump and ESD events per ISO 16750-2 and ISO 10605. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to limit transient excursions before they reach CAN transceiver. Use Value: Maintains CAN signal integrity under 1500 W surges while meeting AEC-Q101 requirements for 15-year vehicle service life. |
Use Scenario: Safeguarding 4–20 mA analog sensor outputs in factory automation systems exposed to motor switching noise and ground bounce. IC Role / Device Role / Timing Role: Low-leakage (1.0 μA) bidirectional clamp across signal and return lines to prevent latch-up or damage to ADC inputs. Use Value: Enables reliable operation in harsh industrial environments with minimal impact on measurement accuracy or loop power budget. |
| Telecom Line Interface | Power Supply Input Stage |
Use Scenario: Secondary surge protection on Ethernet PHY or RS-485 transceiver lines in outdoor telecom equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) TVS placed after primary GDT or MOV to absorb residual energy and limit let-through voltage. Use Value: Clamps to 92.0 V within nanoseconds, preventing damage to 3.3 V or 5 V PHY ICs while supporting 10/1000 μs waveform compliance. |
Use Scenario: Input-stage overvoltage protection for 24 V DC industrial power supplies feeding PLC I/O modules. IC Role / Device Role / Timing Role: Standoff-rated (68 V) clamp placed across input rails to shunt surge energy before it reaches upstream regulators or fuses. Use Value: Handles 16.3 A peak pulse current without degradation, preserving supply continuity during repetitive switching transients. |
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 | Same 68 V VWM and bidirectional function, but SMB package (DO-214AA); lower PPPM (600 W) and higher RθJA (110 °C/W). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump scenarios requiring 1500 W. | Select when board space is constrained and surge energy is ≤600 W; verify thermal derating for ambient >70 °C. |
| 1.5KE68CA | Through-hole (DO-201AE) package; same 68 V rating and 1500 W rating, but slower response and no AEC-Q101 qualification. | Not suitable for automated SMT assembly or automotive applications requiring qualified components; requires wave soldering. | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency and qualification needs. |
Compared with SMBJ68CA and 1.5KE68CA, the 1.5SMC68CAHE3/57T uniquely combines SMT compatibility, 1500 W surge capacity, AEC-Q101 qualification, and low-profile DO-214AB packaging-making it the optimal choice for high-reliability automotive and industrial surface-mount systems.
Availability
1.5SMC68CAHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom line cards, and power supply input stages requiring stable component supply, AEC-Q101 validation, and high-energy transient immunity.
Supply support for 1.5SMC68CAHE3/57T 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, rectifiers, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The 1.5SMC Series was developed specifically for high-power, surface-mount transient suppression in automotive, industrial, and telecom applications-balancing surge robustness, thermal performance, and automated assembly compatibility.
FAQ
What is the clamping voltage of the 1.5SMC68CAHE3/57T at its rated peak pulse current?
The 1.5SMC68CAHE3/57T has a maximum clamping voltage (VC) of 92.0 V at its rated peak pulse current (IPPM) of 16.3 A under a 10/1000 μs waveform. This value is measured per standard test conditions defined in the Vishay datasheet (Document Number: 88303), ensuring repeatable performance for surge protection design validation.
Is the 1.5SMC68CAHE3/57T suitable for automotive applications?
Yes, the 1.5SMC68CAHE3/57T is AEC-Q101 qualified (indicated by the HE3 suffix) and explicitly rated for automotive use. It meets requirements for temperature cycling, high-temperature reverse bias, and ESD robustness, making it appropriate for engine control units, body electronics, and ADAS modules where reliability under harsh conditions is critical.
Does the 1.5SMC68CAHE3/57T have polarity markings on the package?
No, the 1.5SMC68CAHE3/57T is a bidirectional TVS diode and carries no polarity marking such as a cathode band. Its symmetrical construction means either terminal can serve as anode or cathode depending on transient polarity-eliminating orientation concerns during PCB layout and automated placement.
What is the thermal resistance of the 1.5SMC68CAHE3/57T, and how does it affect PCB layout?
The 1.5SMC68CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe junction temperatures under sustained surge conditions, designers must adhere to this pad layout or apply appropriate derating per Figure 2 in the Vishay datasheet.
How does the 1.5SMC68CAHE3/57T differ from unidirectional variants like 1.5SMC68AHE3/57T?
The 1.5SMC68CAHE3/57T is bidirectional with symmetrical clamping in both polarities, while the unidirectional 1.5SMC68AHE3/57T conducts only in reverse (cathode-to-anode) and requires correct orientation. The "C" suffix denotes bidirectionality, enabling use on AC signals or floating nodes where polarity reversal is possible-unlike the unidirectional version.
1.5SMC68CAHE3/57T 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:
- Discontinued at Digi-Key
- 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)
1.5SMC68CAHE3/57T FAQ
1.How can I place an order for 1.5SMC68CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CAHE3/57T 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 1.5SMC68CAHE3/57T reliable?
The price and inventory of 1.5SMC68CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC68CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CAHE3/57T?
1.5SMC68CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CAHE3/57T 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 1.5SMC68CAHE3/57T?
For technical support, including 1.5SMC68CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC68CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CAHE3/57T 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 1.5SMC68CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CAHE3/57T?
All 1.5SMC68CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CAHE3/57T, 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 1.5SMC68CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC68CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68CAHE3/57T 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 …
