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Vishay General Semiconductor - Diodes Division 1.5SMC75CAHE3/9AT
- Part No.:
- 1.5SMC75CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75CAHE3/9AT.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,528
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Product details
Overview
1.5SMC75CAHE3/9AT 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 75 V standoff voltage (VWM), 84.5 V minimum breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), and clamps transients to ≤123 V at 14.6 A IPPM - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC75CAHE3/9AT datasheet, 1.5SMC75CAHE3/9AT pinout, 1.5SMC75CAHE3/9AT application, or 1.5SMC75CAHE3/9AT equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMC (DO-214AB) package thermal performance, and compliance with UL 497B surge protector requirements.
Technical Context
The 1.5SMC75CAHE3/9AT operates as a voltage-clamped shunt device that diverts transient energy to ground when reverse (or forward, in bidirectional mode) voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 μA at 64.1 V).
Designed for repetitive 10/1000 μs surge events at 0.01% duty cycle, it delivers 14.6 A peak pulse current with 123 V clamping voltage and exhibits a temperature coefficient of +0.105 %/°C - enabling predictable derating above 25 °C per Fig. 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 64.1 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - precise voltage threshold where avalanche conduction initiates reliably |
| VC (Clamping) | 123 V at 14.6 A IPPM - maximum voltage seen by protected circuit during full-rated transient |
| PPPM | 1500 W (10/1000 μs) - surge energy handling capacity compatible with IEC 61000-4-5 Level 4 |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.06 mm height for automated placement |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Thermal Resistance | RθJA = 75 °C/W - enables 6.5 W steady-state dissipation on standard PCB copper pads (8.0 mm × 8.0 mm) |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, polarity-unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to protected line; conducts during positive or negative overvoltage excursions |
| Cathode | Transient return path (bidirectional) | Connects to protected line; symmetrically identical to Anode in CA devices - no polarity marking required |
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 rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment |
| AEC-Q101 qualification | Validated for under-hood and chassis-mounted applications requiring extended temperature and life-cycle reliability |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, inductive kick) |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without preconditioning or dry-pack requirements |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and chassis ground to clamp transients before reaching downstream op-amps or ADC inputs. Use Value: Prevents latch-up or permanent damage to precision front-end circuitry while maintaining signal integrity below 123 V during 14.6 A surges. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers against field wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across input terminals to suppress ±1 kV/500 A transients defined in IEC 61000-4-5. Use Value: Enables uninterrupted operation during repeated surge events due to 0.01% duty cycle rating and 1500 W peak power handling. |
| Telecom Line Card Protection | Consumer Power Adapter EMI Filter |
Use Scenario: Secondary-side surge suppression on Ethernet PHY power rails and data lines in enterprise switches and PoE injectors. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) clamping device placed adjacent to RJ45 magnetics to limit common-mode transients. Use Value: Reduces system-level failure rate by limiting transient voltage to ≤123 V within 1 ns, meeting GR-1089-CORE Level 3 requirements. |
Use Scenario: Overvoltage clamping on secondary-side DC output rails of AC/DC adapters to protect USB-C PD controllers and battery management ICs. IC Role / Device Role / Timing Role: Bidirectional TVS across VOUT/GND to absorb flyback spikes and ESD events during hot-plug operations. Use Value: Eliminates need for separate unidirectional devices; RoHS-compliant and halogen-free (HE3 suffix) supports global regulatory compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Lower PPPM (600 W), same VWM (64.1 V), SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤600 W |
| 1.5KE75CA | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification | Not qualified for automotive vibration, thermal cycling, or long-term reliability testing | Choose for cost-sensitive industrial prototypes where surface-mount assembly is not required |
Compared with SMBJ75CA and 1.5KE75CA, the 1.5SMC75CAHE3/9AT uniquely combines 1500 W surge rating, AEC-Q101 qualification, and SMC package thermal performance - making it the only option qualified for production automotive electronics requiring both high-power clamping and automotive-grade reliability.
Availability
1.5SMC75CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC I/O modules, telecom line cards, and consumer power adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC75CAHE3/9AT 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 high-reliability and automotive-grade solutions.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 validation and UL 497B recognition.
FAQ
What does the "CA" suffix mean in 1.5SMC75CAHE3/9AT?
The "CA" suffix in 1.5SMC75CAHE3/9AT denotes a bidirectional configuration - meaning the device provides symmetrical clamping for both positive and negative voltage transients without polarity sensitivity. This eliminates the need for orientation during placement and simplifies design for AC-coupled or floating circuits. Unlike unidirectional variants (e.g., 1.5SMC75A), the 1.5SMC75CAHE3/9AT has no cathode band marking and functions identically in either direction.
Is 1.5SMC75CAHE3/9AT qualified for automotive use?
Yes, the 1.5SMC75CAHE3/9AT is AEC-Q101 qualified - verified for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. The HE3 suffix explicitly indicates RoHS-compliant construction with AEC-Q101 qualification, covering stress tests such as temperature cycling, highly accelerated life testing (HALT), and ESD per ANSI/ESDA/JEDEC JS-001. This makes 1.5SMC75CAHE3/9AT suitable for under-hood and chassis-mounted deployments.
What is the clamping voltage of 1.5SMC75CAHE3/9AT at its rated peak pulse current?
The 1.5SMC75CAHE3/9AT clamps to a maximum of 123 V at its rated peak pulse current of 14.6 A (IPPM), measured using the standardized 10/1000 μs double-exponential waveform. This VC value is guaranteed across temperature and lifetime, and represents the highest voltage the protected circuit will experience during a full-rated transient event - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMC (DO-214AB) package of 1.5SMC75CAHE3/9AT compare thermally to SMA or SMB packages?
The SMC (DO-214AB) package used in 1.5SMC75CAHE3/9AT offers significantly better thermal performance than SMA or SMB: its typical junction-to-ambient thermal resistance (RθJA) is 75 °C/W versus ~100–120 °C/W for SMB/SMA. This allows 1.5SMC75CAHE3/9AT to sustain 6.5 W continuous power dissipation on standard 8.0 mm × 8.0 mm copper pads - essential for high-duty-cycle surge environments where smaller packages would overheat or fail prematurely.
Does 1.5SMC75CAHE3/9AT meet UL recognition standards?
Yes, the 1.5SMC75CAHE3/9AT is recognized by Underwriters Laboratories under UL 497B (Standard for Protectors for Data Communications and Fire-Alarm Circuits) with file number E136766. This certification confirms its suitability as a primary or secondary surge protection component in safety-critical telecom, fire alarm, and industrial control systems - validating its ability to safely interrupt fault currents and withstand repeated surge events without fire hazard or insulation breakdown.
1.5SMC75CAHE3/9AT 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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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)
1.5SMC75CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC75CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75CAHE3/9AT 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 1.5SMC75CAHE3/9AT reliable?
The price and inventory of 1.5SMC75CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC75CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75CAHE3/9AT?
1.5SMC75CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75CAHE3/9AT 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 1.5SMC75CAHE3/9AT?
For technical support, including 1.5SMC75CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC75CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75CAHE3/9AT 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 1.5SMC75CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC75CAHE3/9AT?
All 1.5SMC75CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75CAHE3/9AT, 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 1.5SMC75CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC75CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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