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Vishay General Semiconductor - Diodes Division 1.5SMC68CAHE3/9AT
- Part No.:
- 1.5SMC68CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CAHE3/9AT.pdf
- Description:
- TVS DIODE 58.1VWM 92VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,131
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Product details
Overview
1.5SMC68CAHE3/9AT 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), 71.4 V maximum breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), and clamps to 92.0 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 1.5SMC68CAHE3/9AT datasheet, 1.5SMC68CAHE3/9AT pinout, 1.5SMC68CAHE3/9AT application, or 1.5SMC68CAHE3/9AT equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, SMC (DO-214AB) package details, clamping performance under surge conditions, and direct alternatives for ESD/lightning transient suppression in high-reliability designs.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR (64.6–71.4 V), VWM (58.1 V), and VC (92.0 V) in either direction. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for protecting downstream MOSFETs and ICs from inductive switching transients and lightning-induced surges.
Rated for 150 °C maximum junction temperature and compliant with J-STD-020 MSL Level 1 (260 °C reflow peak), the 1.5SMC68CAHE3/9AT supports automotive-grade reliability via AEC-Q101 qualification - confirmed by Vishay's HE3 suffix and ordering code documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 58.1 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 64.6 V min / 71.4 V max at 1 mA - Voltage range where device transitions from high-impedance to low-impedance clamping state. |
| VC (Clamping) | 92.0 V at 16.3 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines required IC voltage tolerance. |
| PPPM | 1500 W - Peak transient energy absorption capability under standardized 10/1000 μs waveform; validates protection against IEC 61000-4-5 surges. |
| Package | SMC (DO-214AB) - Surface-mount package with 8.0 mm × 8.0 mm copper pad thermal footprint; enables automated placement and 75 °C/W junction-to-ambient thermal resistance. |
| AEC-Q101 | Qualified - Confirmed reliability for automotive applications per stress test requirements; indicated by HE3 suffix and documented in Vishay ordering guide. |
| Leakage (ID) | 1.0 μA max at VWM - Ultra-low reverse leakage ensures minimal power loss and signal integrity in standby or low-power modes. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking - symmetrical terminals enable orientation-agnostic PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity surge) | Conducts during negative-going transients; forms one half of symmetrical clamping path. |
| Cathode | Transient current entry (positive polarity surge) | Conducts during positive-going transients; completes bidirectional clamping loop with Anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in AC-coupled or floating signal lines. |
| 1500 W peak pulse power | Withstands 10/1000 μs surges up to 16.3 A - meets IEC 61000-4-5 Level 4 immunity requirements for industrial and automotive ports. |
| AEC-Q101 qualified | Validated for automotive underhood and chassis applications - supports functional safety designs requiring certified component reliability. |
| Glass passivated junction | Ensures stable leakage and breakdown characteristics over temperature and lifetime - critical for long-term field deployment stability. |
| MSL Level 1 | Compatible with standard Pb-free reflow profiles up to 260 °C peak - enables seamless integration into high-volume SMT assembly without moisture sensitivity concerns. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog front-ends from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±100 V transients before reaching signal conditioning ICs. Use Value: Maintains 58.1 V standoff while limiting clamped voltage to 92.0 V - within absolute maximum rating of 100 V rail-tolerant op-amps and ADC drivers. |
Use Scenario: Shielding 4–20 mA current loop inputs from EFT bursts and surge coupling in factory automation systems. IC Role / Device Role / Timing Role: Fast-response shunt protector across input terminals, diverting >1 kV transients away from precision instrumentation amplifiers. Use Value: 1500 W PPPM rating sustains repeated 10/1000 μs surges without degradation - validated for 100,000+ surge events per IEC 61000-4-5. |
| Telecom Line Card Protection | Consumer Power Adapter EMI Filter |
Use Scenario: Guarding Ethernet PHY magnetics and PoE injectors against lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level bidirectional clamp on differential pairs, coordinated with gas discharge tubes for staged protection. Use Value: Symmetrical 92.0 V clamping ensures balanced voltage stress across transformer windings - prevents core saturation and data corruption. |
Use Scenario: Suppressing fast-rising switching noise and line surges at AC-DC adapter primary-side rectifier outputs. IC Role / Device Role / Timing Role: Secondary-side TVS across DC output rails to prevent overvoltage damage to USB-C PD controllers and buck regulators. Use Value: 1.0 μA max leakage at 58.1 V avoids quiescent current penalty in energy-efficient adapters meeting DOE Level VI standards. |
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 VWM (58.1 V), SMB package (smaller footprint, higher RθJA) | Targeted at space-constrained consumer electronics; insufficient for automotive load dump per ISO 7637-2 Pulse 5a. | Select when board area is critical and surge energy is ≤600 W; verify thermal derating for 75 °C ambient. |
| 1.5KE68CA | Same VWM/VC specs but axial DO-15 package; higher mounting inductance limits high-frequency surge response. | Suitable for prototyping or through-hole legacy designs; not compatible with automated SMT assembly. | Choose only for manual assembly or retrofit; avoid in high-speed signal paths due to parasitic inductance >10 nH. |
Compared with SMBJ64CA and 1.5KE68CA, the 1.5SMC68CAHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC package thermal performance - making it the only option qualified for production automotive ECUs requiring zero-layout-change upgrades from legacy TVS devices.
Availability
1.5SMC68CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line card surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC68CAHE3/9AT 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, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure resilience and AEC-Q101 compliance are mandatory design requirements.
FAQ
What does the "CA" suffix mean in 1.5SMC68CAHE3/9AT?
The "CA" suffix in 1.5SMC68CAHE3/9AT denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity surges. This eliminates polarity marking on the SMC (DO-214AB) package and allows flexible PCB placement without orientation constraints, unlike unidirectional variants marked with "A" only.
Is 1.5SMC68CAHE3/9AT qualified for automotive use?
Yes, 1.5SMC68CAHE3/9AT is AEC-Q101 qualified, as confirmed by its HE3 suffix and Vishay's official ordering documentation. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics such as ADAS sensors and body control modules.
What is the clamping voltage of 1.5SMC68CAHE3/9AT at rated surge current?
The 1.5SMC68CAHE3/9AT clamps to a maximum of 92.0 V when subjected to its rated 16.3 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88303 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the SMC package of 1.5SMC68CAHE3/9AT compare thermally to SMA or SMB?
The SMC (DO-214AB) package used by 1.5SMC68CAHE3/9AT offers lower thermal resistance than SMA or SMB - with a typical RθJA of 75 °C/W (vs. ~100–120 °C/W for SMB). This enables higher sustained power dissipation and better reliability in high-ambient-temperature environments like automotive engine compartments or industrial enclosures.
Can 1.5SMC68CAHE3/9AT replace older 1.5SMC68A variants in existing designs?
Yes, 1.5SMC68CAHE3/9AT can directly replace unidirectional 1.5SMC68A variants in most cases - provided the circuit design accommodates bidirectional clamping behavior. Its identical VWM (58.1 V), VBR (64.6–71.4 V), and VC (92.0 V) ensure equivalent protection performance, while the HE3 suffix adds AEC-Q101 qualification and RoHS compliance not present in base-E3 versions.
1.5SMC68CAHE3/9AT 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:
- 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)
1.5SMC68CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC68CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CAHE3/9AT 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 1.5SMC68CAHE3/9AT reliable?
The price and inventory of 1.5SMC68CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC68CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CAHE3/9AT?
1.5SMC68CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CAHE3/9AT 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 1.5SMC68CAHE3/9AT?
For technical support, including 1.5SMC68CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC68CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CAHE3/9AT 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 1.5SMC68CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CAHE3/9AT?
All 1.5SMC68CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CAHE3/9AT, 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 1.5SMC68CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC68CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68CAHE3/9AT Tags
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