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Vishay General Semiconductor - Diodes Division 1.5SMC75CA-E3/9AT
- Part No.:
- 1.5SMC75CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75CA-E3/9AT.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,993
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Product details
Overview
1.5SMC75CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 75 V standoff voltage (VWM), 82.5 V minimum breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), and clamps transients to ≤104 V at 14.6 A peak pulse current - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC75CA-E3/9AT datasheet, 1.5SMC75CA-E3/9AT pinout, 1.5SMC75CA-E3/9AT application, or 1.5SMC75CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, SMC (DO-214AB) package compatibility with automated assembly, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compliance with UL 497B surge protector standards.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 64.1 V), while the 10/1000 μs waveform rating reflects real-world lightning and inductive-switching surge immunity.
The device is rated for continuous operation from −65 °C to +150 °C junction temperature, with derated peak pulse power above 25 °C per Fig. 2. Mounting on 8.0 mm × 8.0 mm copper pads enables full 1500 W dissipation, and its MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 64.1 V - maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - guaranteed conduction onset range; ensures predictable turn-on during overvoltage events |
| VC (Clamping) | 104 V at 14.6 A (10/1000 μs) - peak voltage seen by protected circuit; critical for IC-level ESD/surge survivability |
| PPPM | 1500 W - surge energy handling capacity under standardized lightning-like waveform; validates robustness in harsh environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with J-STD-020 reflow |
| Temperature Range | −65 °C to +150 °C - qualified for under-hood automotive, industrial control, and outdoor telecom deployments |
| Compliance | UL 497B recognized (QVGQ2), RoHS-compliant (E3 suffix), MSL Level 1 - meets safety, environmental, and assembly reliability requirements |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current in either direction when voltage exceeds ±71.3 V |
| Case / Body | Thermal and mechanical interface | Exposed metal slug provides primary heat path to PCB copper; requires 8.0 mm × 8.0 mm pad per terminal for full 1500 W rating |
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 power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) in properly laid out PCBs |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift over temperature and lifetime |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow without pre-baking or special handling |
| UL 497B recognition | Validates suitability as primary surge protector in telecom and industrial safety-critical circuits |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point, shunting surge energy to ground before reaching signal conditioning ICs. Use Value: Maintains signal integrity under 100 V transients by clamping to ≤104 V, preventing latch-up or damage to 5 V/3.3 V microcontrollers and ADCs. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary front-end TVS on each channel, coordinated with series impedance (e.g., 100 Ω resistor) to limit current into downstream optocouplers or Schmitt triggers. Use Value: Enables reliable operation in factory-floor environments where repetitive 1 kV/500 A transients occur, with <1.0 μA leakage preserving input threshold accuracy. |
| Telecom Line Card Protection | Consumer Power Adapter EMI Filter Stage |
|
Use Scenario: Secondary surge suppression on POTS or Ethernet PHY lines after gas discharge tube (GDT) primary protection. IC Role / Device Role / Timing Role: Fast-response TVS that activates within nanoseconds after GDT ionization, limiting let-through voltage to protect PHY transceivers. Use Value: Reduces clamped voltage from >500 V (GDT alone) to ≤104 V, meeting GR-1089-CORE Level 3 telecom immunity requirements. |
Use Scenario: Suppressing differential-mode surges between AC input lines (L-N) in Class II wall adapters and USB PD chargers. IC Role / Device Role / Timing Role: Bidirectional clamp bridging live and neutral before bridge rectifier, absorbing energy from fast-rising line transients. Use Value: Prevents rectifier diode avalanche failure and capacitor overvoltage, supporting EN 61000-4-5 compliance without increasing filter size. |
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 | Same VWM (64.1 V) and VC (104 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA) | Lower surge rating limits use to consumer-grade or non-safety-critical paths; unsuitable for automotive load dump | Select when board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE75CA | Same electrical specs but axial DO-15 through-hole package; higher mounting inductance, no MSL rating | Not suitable for automated SMT production; incompatible with high-speed surge waveforms due to lead inductance | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ75CA and 1.5KE75CA, the 1.5SMC75CA-E3/9AT delivers full 1500 W surge handling in an SMT-optimized, AEC-Q101-capable package - making it the preferred choice for production automotive, industrial, and telecom systems requiring validated reliability and automated assembly support.
Availability
1.5SMC75CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and telecom line-card surge suppression requiring stable component supply, full traceability, and long-term lifecycle continuity.
Supply support for 1.5SMC75CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and ruggedized design.
The 1.5SMC Series was developed specifically for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - combining high-power capability, AEC-Q101 qualification, and UL recognition in a compact SMC package.
FAQ
What is the clamping voltage of the 1.5SMC75CA-E3/9AT at its rated peak pulse current?
The 1.5SMC75CA-E3/9AT clamps to a maximum of 104 V when subjected to its rated peak pulse current of 14.6 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC75CA-E3/9AT AEC-Q101 qualified?
No - the 1.5SMC75CA-E3/9AT carries the E3 suffix, indicating RoHS-compliant commercial grade. AEC-Q101 qualification requires the HE3 or HM3 suffix (e.g., 1.5SMC75CAHE3_A). The 1.5SMC75CA-E3/9AT is not tested or certified to AEC-Q101 stress requirements, though its construction and thermal performance align closely with qualified variants.
What does the "CA" suffix mean in 1.5SMC75CA-E3/9AT?
The "CA" suffix in 1.5SMC75CA-E3/9AT denotes a bidirectional configuration: the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants, the CA version has no cathode band marking and functions identically regardless of applied polarity - essential for protecting AC-coupled or floating signal paths.
What is the maximum operating temperature for the 1.5SMC75CA-E3/9AT?
The 1.5SMC75CA-E3/9AT has a specified junction temperature range of −65 °C to +150 °C. Its thermal resistance (RθJA = 75 °C/W) means that at 6.5 W steady-state dissipation, the junction will rise 488 °C above ambient - confirming that continuous DC power dissipation is limited to 6.5 W only with infinite heatsinking; practical operation relies on transient (not continuous) power handling.
How does the 1.5SMC75CA-E3/9AT differ from the unidirectional 1.5SMC75A-E3/9AT?
The 1.5SMC75CA-E3/9AT is bidirectional with symmetrical clamping in both directions, while the 1.5SMC75A-E3/9AT is unidirectional and features a cathode band marking. Electrically, the CA version has identical VWM (64.1 V), VBR (71.3–78.8 V), and VC (104 V) ratings but allows placement without polarity orientation - simplifying layout and eliminating risk of reverse installation in AC or differential signal protection.
1.5SMC75CA-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC75CA-E3/9AT FAQ
1.How can I place an order for 1.5SMC75CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75CA-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 1.5SMC75CA-E3/9AT reliable?
The price and inventory of 1.5SMC75CA-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 1.5SMC75CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC75CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75CA-E3/9AT?
1.5SMC75CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75CA-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 1.5SMC75CA-E3/9AT?
For technical support, including 1.5SMC75CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC75CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75CA-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 1.5SMC75CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC75CA-E3/9AT?
All 1.5SMC75CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75CA-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 1.5SMC75CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC75CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75CA-E3/9AT Tags
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