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Vishay General Semiconductor - Diodes Division 1.5SMC75CAHE3/57T
- Part No.:
- 1.5SMC75CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75CAHE3/57T.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,625
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Product details
Overview
1.5SMC75CAHE3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 75 V standoff voltage (VWM), 104 V clamping voltage (VC) at 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform. It protects sensitive signal lines and power rails in automotive sensor units, industrial I/O interfaces, and telecom surge-prone circuits.
For engineers reviewing the 1.5SMC75CAHE3/57T datasheet, 1.5SMC75CAHE3/57T pinout, 1.5SMC75CAHE3/57T application, or 1.5SMC75CAHE3/57T equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast response time, and bidirectional clamping - critical for robust ESD and lightning transient protection in high-reliability embedded systems.
Technical Context
The 1.5SMC75CAHE3/57T operates as a bidirectional avalanche diode, leveraging glass-passivated junction technology to achieve symmetrical clamping in both polarities without polarity marking. Its breakdown voltage (VBR) is specified at 71.3–78.8 V with 1 mA test current, ensuring precise overvoltage threshold control.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C), features matte tin-plated leads, and delivers thermal resistance of 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads - enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 75 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 75 V nominal rail protection. |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - Tight tolerance ensures consistent turn-on behavior across production lots and temperature range. |
| VC (Clamping) | 104 V at 14.6 A (10/1000 μs) - Limits transient voltage seen by downstream ICs to ≤104 V during 1500 W surge events. |
| PPPM | 1500 W - Peak pulse power handling capability under standardized 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments and high-temperature industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
| Package | SMC (DO-214AB) - Industry-standard 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with standard SMT pick-and-place. |
Pinout & Package
Package: SMC (DO-214AB), bidirectional configuration - no polarity marking; symmetric terminals function as interchangeable anode/cathode pair for AC or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as clamping node; no fixed polarity - enables placement flexibility on PCB without orientation constraints. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal forms symmetrical TVS junction; identical electrical behavior in both directions ensures balanced protection on data lines or AC inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled signals, RS-485 buses, and transformer-isolated interfaces without external polarity management. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges (1.2/50 μs voltage + 8/20 μs current) up to Level 4 (4 kV/2 kA) when properly mounted. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, ADAS sensors, and infotainment power supplies requiring long-term field reliability. |
| MSL Level 1 rating | Supports lead-free reflow soldering at 260 °C peak without moisture-induced damage - eliminates pre-bake requirement in high-volume manufacturing. |
| Low clamping ratio (VC/VWM = 1.39) | Minimizes protected circuit overvoltage stress during transients - critical for safeguarding 75 V-rated MOSFETs and analog front-ends. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and radar sensor signal lines from load dump, ISO 7637-2 pulses, and ESD events in vehicle cabins and powertrain zones. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to shunt transients before reaching PHY IC or microcontroller GPIO. Use Value: Clamps 104 V at 14.6 A while maintaining 75 V system compatibility - prevents latch-up and gate oxide damage in automotive-grade transceivers. |
Use Scenario: Safeguarding two-wire RS-485 transceivers in factory automation PLCs and motor drives exposed to ground loop surges and cable discharge events. IC Role / Device Role / Timing Role: Differential-line TVS across A/B bus lines to suppress common-mode transients without distorting signal integrity. Use Value: Symmetrical clamping preserves differential signaling margins; 1500 W rating handles repetitive 2 kV surges per IEC 61000-4-4. |
| Telecom Power Input | Consumer USB-C ESD Clamp |
Use Scenario: Front-end protection of 48 V PoE-powered equipment (e.g., IP cameras, wireless access points) against lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS on DC input rail upstream of DC-DC converter to absorb bulk energy before regulation stage. Use Value: 104 V clamping limits stress on 60 V-rated input capacitors and FETs; AEC-Q101 grade ensures extended field life in outdoor deployments. |
Use Scenario: Secondary-side ESD protection on USB-C CC and VBUS lines in portable audio docks and docking stations. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp placed adjacent to connector to divert ±15 kV contact ESD per IEC 61000-4-2. Use Value: Low 104 V VC prevents overshoot beyond USB PD 5 V/9 V/15 V/20 V profiles; SMC package allows compact layout near connector. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Lower PPPM (600 W), same VWM/VC, SMB (DO-214AA) package - 30% smaller footprint but reduced surge margin. | Suitable for space-constrained consumer electronics where 600 W surge immunity suffices; not recommended for automotive or industrial mains-connected systems. | Select SMBJ75CA only if board area is critical and surge threat level is limited to IEC 61000-4-2 ESD or low-energy transients. |
| 1.5KE75CA | Through-hole TO-218 package, identical VWM/VC/PPPM specs, higher thermal mass but incompatible with SMT assembly. | Used in legacy industrial power supplies and repair scenarios where through-hole mounting is mandated or preferred for mechanical robustness. | Choose 1.5KE75CA only when manual assembly, high-vibration environments, or existing through-hole design rules prohibit SMT adoption. |
Compared with SMBJ75CA and 1.5KE75CA, the 1.5SMC75CAHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC package - making it the optimal choice for new automotive and industrial SMT designs requiring certified reliability and high-energy transient immunity.
Availability
1.5SMC75CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, and telecom power input stages requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant surge protection.
Supply support for 1.5SMC75CAHE3/57T 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, MOSFETs, and passive components with emphasis on high-reliability, high-efficiency solutions.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in automotive, industrial, and telecom applications - delivering robust surge immunity, AEC-Q101 qualification, and standardized SMC packaging for automated manufacturing.
FAQ
What is the clamping voltage of the 1.5SMC75CAHE3/57T under a 10/1000 μs surge?
The 1.5SMC75CAHE3/57T has a maximum clamping voltage (VC) of 104 V at 14.6 A peak pulse current with a 10/1000 μs waveform. This value is measured per industry-standard test conditions and ensures downstream components see no more than 104 V during surge events - critical for protecting 75 V-rated circuitry. The 1.5SMC75CAHE3/57T maintains this performance across its full operating temperature range (-65 °C to +150 °C).
Is the 1.5SMC75CAHE3/57T suitable for automotive applications?
Yes, the 1.5SMC75CAHE3/57T is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD verification - making it appropriate for engine control units, ADAS sensors, and infotainment power rails. The 1.5SMC75CAHE3/57T meets automotive-grade reliability requirements without derating.
What does the "CA" suffix mean in 1.5SMC75CAHE3/57T?
The "CA" suffix in 1.5SMC75CAHE3/57T indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with no cathode band marking. This enables use on AC lines, differential buses (e.g., RS-485), or any application where polarity reversal or common-mode surges must be clamped equally. The 1.5SMC75CAHE3/57T does not require orientation during placement.
How does the 1.5SMC75CAHE3/57T differ from unidirectional variants like 1.5SMC75AHE3/57T?
The 1.5SMC75CAHE3/57T is bidirectional with symmetrical VBR and VC in both directions, while the unidirectional 1.5SMC75AHE3/57T has a marked cathode band and only clamps in reverse bias. The 1.5SMC75CAHE3/57T eliminates polarity concerns in layout and supports AC-coupled or floating signal paths - unlike the 1.5SMC75AHE3/57T, which requires correct orientation and conducts forward current above ~0.7 V.
What is the thermal resistance of the 1.5SMC75CAHE3/57T, and how does it affect PCB layout?
The 1.5SMC75CAHE3/57T 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 operation below 150 °C junction temperature, PCB layout must provide adequate copper area and avoid excessive ambient temperature buildup. The 1.5SMC75CAHE3/57T does not require a heatsink for typical transient duty cycles but benefits from thermal relief in high-temperature environments.
1.5SMC75CAHE3/57T 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):
- 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)
1.5SMC75CAHE3/57T FAQ
1.How can I place an order for 1.5SMC75CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75CAHE3/57T 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 1.5SMC75CAHE3/57T reliable?
The price and inventory of 1.5SMC75CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC75CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75CAHE3/57T?
1.5SMC75CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75CAHE3/57T 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 1.5SMC75CAHE3/57T?
For technical support, including 1.5SMC75CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC75CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75CAHE3/57T 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 1.5SMC75CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC75CAHE3/57T?
All 1.5SMC75CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75CAHE3/57T, 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 1.5SMC75CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC75CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75CAHE3/57T Tags
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