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Vishay General Semiconductor - Diodes Division SMCJ75C-E3/57T
- Part No.:
- SMCJ75C-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ75C-E3/57T.pdf
- Description:
- TVS DIODE 75VWM 134VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,420
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Product details
Overview
SMCJ75C-E3/57T from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for clamping voltage transients on signal or power lines. It features a 75 V stand-off voltage (VWM), 121 V maximum clamping voltage (VC) at 12.4 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with 10/1000 µs waveform. It is AEC-Q101 qualified and used to protect automotive sensor interfaces and industrial I/O lines against ESD and inductive switching surges.
For engineers reviewing the SMCJ75C-E3/57T datasheet, SMCJ75C-E3/57T pinout, SMCJ75C-E3/57T application, or SMCJ75C-E3/57T equivalent, key selection criteria include bi-directional clamping capability, 121 V VC at rated IPPM, DO-214AB thermal performance (RθJA = 75 °C/W), and compliance with AEC-Q101 for automotive-grade reliability.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified from 83.3 V to 92.1 V at 1 mA test current. Its low incremental surge resistance enables effective energy diversion during fast transients, while glass-passivated junction ensures stable leakage (<1 µA at VWM) and long-term reliability under repeated surge stress.
The device meets MSL Level 1 per J-STD-020, supports lead-free reflow up to 260 °C peak, and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. No polarity marking is present-consistent with bi-directional construction-and it is rated for operation from –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 83.3 V / 92.1 V at 1 mA - Ensures predictable turn-on threshold across production lot |
| VC @ IPPM | 121 V at 12.4 A - Clamped voltage seen by protected circuit during 10/1000 µs surge |
| PPPM | 1500 W - Peak transient power the device can absorb without failure |
| ID @ VWM | ≤1 µA - Minimal leakage current preserves signal integrity in high-impedance circuits |
| TJ max | +150 °C - Enables use in under-hood automotive environments and industrial enclosures |
| RθJA | 75 °C/W - Thermal resistance defines derating needed when mounted on standard PCB copper pads |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, bi-directional configuration with no polarity marking. Case is molded compound rated UL 94 V-0; terminals are matte tin-plated for solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; either side conducts during positive or negative overvoltage |
| Case (cathode band absent) | Thermal and mechanical interface | DO-214AB body provides primary heat path to PCB copper; absence of band confirms bi-directional identity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns or baking requirements |
| Glass-passivated junction | Improves long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| 1500 W peak pulse power | Supports robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge events |
Applications
| Automotive Sensor Protection | 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 in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤121 V during 10/1000 µs surges, preserving signal integrity and preventing latch-up in 5 V or 12 V sensor front-ends. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil kickback and field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V DC input channels to shunt inductive energy before reaching optocoupler or MCU GPIO. Use Value: Absorbs up to 1500 W of surge energy without degradation, enabling reliable operation in factory automation environments with frequent switching noise. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Protecting Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair data lines. IC Role / Device Role / Timing Role: Bi-directional TVS placed across each differential pair (e.g., TX+/TX–) to clamp common-mode transients. Use Value: Symmetric clamping ensures balanced suppression without skewing differential signaling, critical for 100BASE-TX and Gigabit Ethernet compliance. | Use Scenario: Secondary-side overvoltage protection on 5 V/9 V/12 V USB-C and wall adapter outputs prone to feedback loop faults. IC Role / Device Role / Timing Role: Standoff-rated clamp between VOUT and GND to prevent damage to connected devices during regulator failure. Use Value: 75 V VWM allows safe operation with 12 V nominal outputs while clamping fault conditions to 121 V-well below typical IC absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC75 | Lower PPPM (600 W), same VWM (75 V), smaller DO-214AA package | Reduced surge handling; suitable only for lower-energy transients (e.g., ESD-only) | Select SMCJ75C-E3/57T when full 1500 W IEC 61000-4-5 compliance is required |
| SMCJ75CAHE3/57T | Identical electrical specs but AEC-Q101 qualified version with HE3 suffix | No functional difference; HE3 denotes enhanced whisker resistance (JESD 201 Class 2) | Choose SMCJ75C-E3/57T for commercial-grade cost optimization where AEC-Q101 is not mandated |
Compared with SAC75 and SMCJ75CAHE3/57T, the SMCJ75C-E3/57T offers optimal balance of high-energy surge capability (1500 W), automotive-grade reliability (AEC-Q101), and commercial cost structure-making it preferred for industrial and Tier-2 automotive designs requiring proven robustness without premium qualification overhead.
Availability
SMCJ75C-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply and RoHS-compliant packaging.
Supply support for SMCJ75C-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where consistent clamping and long-term stability are critical.
FAQ
What is the clamping voltage of the SMCJ75C-E3/57T under a 10/1000 µs surge?
The SMCJ75C-E3/57T has a maximum clamping voltage (VC) of 121 V when subjected to its rated peak pulse current of 12.4 A using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and reflects worst-case conduction behavior during surge events, ensuring downstream circuits remain within safe voltage limits.
Is the SMCJ75C-E3/57T suitable for automotive applications?
Yes, the SMCJ75C-E3/57T is AEC-Q101 qualified and explicitly rated for automotive use. Its construction-including glass-passivated junction, MSL Level 1 moisture sensitivity, and –55 °C to +150 °C operating range-supports deployment in engine control units, body electronics, and ADAS sensor interfaces where reliability under thermal and electrical stress is mandatory.
How does the bi-directional design of the SMCJ75C-E3/57T affect its mounting and layout?
The SMCJ75C-E3/57T has no polarity marking and functions identically in both directions, so PCB layout requires no orientation alignment. Engineers may place it across any two nodes needing symmetrical overvoltage protection-such as differential signal pairs or AC-coupled lines-without concern for anode/cathode assignment, simplifying routing and reducing assembly errors.
What is the thermal resistance of the SMCJ75C-E3/57T, and how does it impact PCB design?
The SMCJ75C-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C under sustained 6.5 W power dissipation, designers must ensure adequate copper area and consider airflow or heatsinking-especially in enclosed industrial enclosures.
Does the SMCJ75C-E3/57T meet RoHS and lead-free soldering requirements?
Yes, the SMCJ75C-E3/57T carries the E3 suffix, indicating full RoHS compliance and compatibility with lead-free reflow processes up to a peak temperature of 260 °C. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and it passes JESD 201 Class 1A whisker testing-ensuring long-term interconnect reliability.
SMCJ75C-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 134V
- Current - Peak Pulse (10/1000µs):
- 11.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ75C-E3/57T FAQ
1.How can I place an order for SMCJ75C-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ75C-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 SMCJ75C-E3/57T reliable?
The price and inventory of SMCJ75C-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 SMCJ75C-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ75C-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ75C-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ75C-E3/57T?
SMCJ75C-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ75C-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 SMCJ75C-E3/57T?
For technical support, including SMCJ75C-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ75C-E3/57T requirements.
6.How does Aetrix verify that SMCJ75C-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ75C-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 SMCJ75C-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ75C-E3/57T?
All SMCJ75C-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ75C-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 SMCJ75C-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ75C-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ75C-E3/57T Tags
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