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Vishay General Semiconductor - Diodes Division 1.5SMC75CA-E3/57T
- Part No.:
- 1.5SMC75CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75CA-E3/57T.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,870
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Product details
Overview
1.5SMC75CA-E3/57T 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), 104 V maximum clamping voltage (VC) at 14.6 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection circuits.
For engineers reviewing the 1.5SMC75CA-E3/57T datasheet, 1.5SMC75CA-E3/57T pinout, 1.5SMC75CA-E3/57T application, or 1.5SMC75CA-E3/57T equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification readiness via HE3 suffix variants.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under transient overvoltage conditions exceeding its breakdown threshold (71.3–78.8 V), it rapidly switches to low-impedance conduction to divert surge energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns).
The device is rated for bidirectional operation with symmetrical electrical characteristics in both polarities, supports repetitive surges at 0.01% duty cycle, and is thermally characterized with RθJA = 75 °C/W and RθJL = 15 °C/W - enabling thermal design on standard 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 64.1 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - guaranteed voltage range where device transitions into avalanche conduction; ensures predictable turn-on behavior. |
| VC (Clamping) | 104 V at 14.6 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge; directly limits stress on downstream ICs. |
| PPPM | 1500 W - peak pulse power handling capacity; determines survivability against lightning-induced transients (IEC 61000-4-5 Level 4). |
| IPPM | 14.6 A - maximum non-repetitive peak pulse current; used with VC to calculate actual clamping energy delivered to load. |
| TJ max | 150 °C - maximum junction temperature; sets upper limit for thermal derating in high-ambient or high-duty-cycle applications. |
| Package | SMC (DO-214AB) - industry-standard surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for automated placement and reflow. |
Pinout & Package
SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant, and compatible with J-STD-002 solderability standards. Bidirectional construction means no polarity marking; terminals are symmetric and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve identical roles in bidirectional clamping; no cathode band marking; enables flexible PCB layout without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware routing in differential or AC-coupled signal paths. |
| 1500 W peak pulse power | Withstands 10/1000 µs surges up to 14.6 A - meets IEC 61000-4-5 surge immunity requirements for industrial and automotive front-end protection. |
| Glass-passivated junction | Ensures stable leakage current (<1 µA at VWM) and long-term reliability under thermal cycling and humidity exposure. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes voltage overshoot during transient events - critical for protecting 3.3 V or 5 V logic interfaces and analog sensors. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - allows direct use from reel without baking, reducing manufacturing overhead. |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in engine control units. IC Role / Device Role: Bidirectional shunt clamp placed across signal line and ground to limit transient voltage excursions. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-2 ESD (±15 kV air) while preserving low-leakage bias conditions. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role: Primary overvoltage clamp on 24 V DC input channels, placed upstream of optocouplers or level shifters. Use Value: Limits transient voltage to ≤104 V during 1 kV/500 A surge events, preventing latch-up or permanent damage to microcontroller GPIOs. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Secondary-level protection on Ethernet PHY power rails and auxiliary bias supplies in telecom base station line cards. IC Role / Device Role: Fast-response TVS parallel to bulk capacitance to suppress ring wave and combination wave surges per IEC 61000-4-5. Use Value: Clamps 1500 W surges within nanoseconds, reducing stress on downstream DC/DC converters and maintaining system uptime during lightning-induced grid disturbances. |
Use Scenario: Input-stage transient suppression on universal AC/DC adapters handling 100–240 VAC mains, especially in regions with unstable grids. IC Role / Device Role: First-line defense against differential-mode surges between L/N and common-mode surges from L/N to PE. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W without degradation, extending adapter lifetime and meeting UL 1449 Type 4 component requirements. |
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 and smaller SMB package (DO-214AA); RθJA = 85 °C/W. | Limited to lower-energy transients; suitable only where surge amplitude or repetition rate is reduced. | Select when board space is constrained and surge threat level is Class 2 (IEC 61000-4-5) rather than Class 4. |
| 1.5KE75CA | Through-hole TO-218 package; same electrical specs but higher thermal mass; requires manual or wave soldering; not RoHS-compliant in legacy versions. | Used in legacy industrial equipment where SMT is not feasible or where higher mechanical robustness is required. | Choose for repair/refurbishment of through-hole designs or where vibration resistance outweighs assembly automation needs. |
Compared with SMBJ75CA and 1.5KE75CA, the 1.5SMC75CA-E3/57T delivers full 1500 W surge handling in an RoHS-compliant, MSL Level 1 SMT package - making it optimal for new automotive and industrial designs requiring high reliability, automated assembly, and compliance with modern environmental standards.
Availability
1.5SMC75CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line card surge suppression requiring stable component supply, consistent lot-to-lot performance, and traceable sourcing.
Supply support for 1.5SMC75CA-E3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and application-specific optimization.
The 1.5SMC Series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated without compromising signal fidelity or thermal performance.
FAQ
What is the clamping voltage of the 1.5SMC75CA-E3/57T under a 10/1000 µs surge?
The 1.5SMC75CA-E3/57T has a maximum clamping voltage (VC) of 104 V when subjected to its rated peak pulse current of 14.6 A with a 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and represents the highest voltage that will appear across the protected circuit during such a transient event. The 1.5SMC75CA-E3/57T maintains this clamping performance bidirectionally.
Is the 1.5SMC75CA-E3/57T suitable for automotive applications?
Yes - the 1.5SMC75CA-E3/57T is RoHS-compliant and manufactured using processes aligned with AEC-Q101 qualification (available in HE3/HM3 variants). While the -E3/57T suffix itself is commercial-grade, its electrical and thermal specifications - including 150 °C TJ max, MSL Level 1, and robust surge handling - meet baseline requirements for under-hood and body-control module protection. For certified automotive use, specify 1.5SMC75CAHE3_A/E3.
How does the bidirectional design of the 1.5SMC75CA-E3/57T affect PCB layout?
The 1.5SMC75CA-E3/57T has no polarity marking and identical electrical behavior in both directions, so PCB layout requires no orientation alignment - either terminal can connect to signal or ground. This simplifies routing in differential pairs, AC-coupled lines, or shared-bus architectures. The SMC (DO-214AB) footprint remains unchanged, and thermal pad design follows the recommended 8.0 mm × 8.0 mm copper area per terminal.
What is the maximum steady-state power dissipation of the 1.5SMC75CA-E3/57T?
The 1.5SMC75CA-E3/57T has a maximum steady-state power dissipation (PD) of 6.5 W when mounted on an infinite heatsink at TA = 50 °C. In typical PCB mounting (0.31" × 0.31" copper pads), derating applies per Figure 2 in the datasheet - e.g., ~4.5 W at 70 °C ambient. This rating governs continuous leakage power and defines thermal limits during frequent low-energy transients.
Does the 1.5SMC75CA-E3/57T require external series impedance for optimal protection?
Yes - like all TVS diodes, the 1.5SMC75CA-E3/57T performs best when paired with appropriate series impedance (e.g., ferrite bead, resistor, or trace inductance) to limit peak current and coordinate with downstream overcurrent protection. Without it, the 14.6 A IPPM could exceed the fault-clearing capability of fuses or current-limiting ICs. The 1.5SMC75CA-E3/57T datasheet recommends verifying coordination with system-level surge testing per IEC 61000-4-5.
1.5SMC75CA-E3/57T 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:
- 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-E3/57T FAQ
1.How can I place an order for 1.5SMC75CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75CA-E3/57T 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 1.5SMC75CA-E3/57T reliable?
The price and inventory of 1.5SMC75CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75CA-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC75CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75CA-E3/57T?
1.5SMC75CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75CA-E3/57T 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 1.5SMC75CA-E3/57T?
For technical support, including 1.5SMC75CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC75CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75CA-E3/57T 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 1.5SMC75CA-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC75CA-E3/57T?
All 1.5SMC75CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75CA-E3/57T, 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 1.5SMC75CA-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC75CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75CA-E3/57T Tags
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