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Vishay General Semiconductor - Diodes Division SMCJ75C-E3/9AT
- Part No.:
- SMCJ75C-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ75C-E3/9AT.pdf
- Description:
- TVS DIODE 75VWM 134VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,384
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Product details
Overview
SMCJ75C-E3/9AT 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. Used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial systems against ESD and inductive switching surges.
For engineers reviewing the SMCJ75C-E3/9AT datasheet, SMCJ75C-E3/9AT pinout, SMCJ75C-E3/9AT application, or SMCJ75C-E3/9AT equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, 1500 W surge rating, DO-214AB thermal performance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ75C-E3/9AT operates as a bi-directional avalanche diode, exhibiting symmetrical breakdown behavior in both polarities with minimum breakdown voltage (VBR) of 83.3 V and maximum of 92.1 V at 1 mA test current. Its low incremental surge resistance enables stable clamping under fast transients, while glass-passivated junction ensures reliability across -55 °C to +150 °C operating temperature range.
Designed for transient suppression per ANSI/IEEE C62.35, it delivers 121 V clamping at 12.4 A (10/1000 µs), with <1 μA reverse leakage at 75 V and meets MSL Level 1 per J-STD-020. The device is RoHS-compliant (E3 suffix), matte tin-plated, and qualified to AEC-Q101 for automotive-grade robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse working voltage before clamping initiates |
| VBR min/max | 83.3 V / 92.1 V at 1 mA - Ensures reliable bi-directional breakdown within tight tolerance |
| VC @ IPPM | 121 V at 12.4 A - Clamping voltage during 10/1000 µs surge defines protected circuit stress level |
| PPPM | 1500 W - Peak transient energy handling capacity under standardized surge waveform |
| ID @ VWM | 1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance circuits |
| TJ max | +150 °C - Enables operation in under-hood automotive and industrial environments |
| RθJA | 75 °C/W - Thermal resistance determines required PCB copper area for sustained power dissipation |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, bi-directional configuration with no polarity marking. Case meets UL 94 V-0 flammability rating; terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction - either terminal serves as input/output for surge current in either direction |
| Case (cathode band absent) | Thermal and mechanical interface | DO-214AB body provides primary heat path to PCB copper pads; absence of band confirms bi-directional type |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, infotainment, and ADAS sensor interfaces |
| Glass-passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| MSL Level 1 rating | Enables standard reflow without pre-bake; peak temperature up to 260 °C supported |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream ICs |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted on 8 mm × 8 mm pads |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Bi-directional TVS placed between power rail and ground to clamp surges up to ±121 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during alternator load dump events. | Use Scenario: Protecting analog output lines of pressure/temperature sensors in PLC modules. IC Role / Device Role / Timing Role: Parallel-connected TVS on 4–20 mA or 0–10 V signal paths to absorb field-induced transients. Use Value: Maintains measurement accuracy by limiting voltage excursion to ≤121 V during lightning-induced coupling on long cable runs. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered switches and base stations against AC line coupling surges. IC Role / Device Role / Timing Role: Front-end clamping device on 48 V DC input rails prior to DC/DC converters. Use Value: Absorbs 1500 W surges without degradation, ensuring uninterrupted operation during telecom infrastructure lightning events. | Use Scenario: Shielding MCU GPIOs and gate drivers from back-EMF spikes generated by brushed motors in washing machines. IC Role / Device Role / Timing Role: Localized TVS on motor driver supply and feedback lines to limit induced voltage spikes. Use Value: Extends lifetime of low-voltage logic components by clamping transients to 121 V before they reach sensitive CMOS inputs. |
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-E3/52T | Lower PPPM (600 W), smaller SMB package (DO-214AA), higher RθJA (110 °C/W) | Suitable for space-constrained consumer electronics but not automotive under-hood use due to lower surge rating | Select when board area is critical and surge energy remains below 600 W; verify thermal design with reduced copper pad area |
| 1.5KE75CA | Through-hole TO-218 package, same 75 V VWM and 121 V VC, but higher RθJA (30 °C/W on heatsink only) | Requires manual assembly and heatsinking; used where legacy through-hole design or higher single-pulse energy is needed | Choose for prototyping or low-volume industrial controls where SMT automation is unavailable or thermal mass outweighs footprint concerns |
Compared with SMCJ75C-E3/9AT, SMBJ75CA-E3/52T offers smaller footprint but sacrifices 60% surge power handling and thermal performance, while 1.5KE75CA provides identical electrical specs in a through-hole format requiring mechanical mounting and heatsink planning - making SMCJ75C-E3/9AT optimal for high-reliability, automated SMT automotive and industrial designs.
Availability
SMCJ75C-E3/9AT is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom power supplies, and consumer appliance motor controllers requiring stable component supply and AEC-Q101 compliance.
Supply support for SMCJ75C-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The SMCJ series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments where AEC-Q101 validation, low clamping voltage, and repeatable surge performance are mandatory.
FAQ
What is the clamping voltage of the SMCJ75C-E3/9AT under a 10/1000 µs surge?
The SMCJ75C-E3/9AT clamps to a maximum of 121 V when subjected to its rated peak pulse current of 12.4 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The clamping performance is guaranteed across the full operating temperature range of -55 °C to +150 °C.
Is the SMCJ75C-E3/9AT suitable for automotive applications?
Yes, the SMCJ75C-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use. Its construction - including glass-passivated junction, MSL Level 1 reflow compatibility, and operation up to +150 °C - meets requirements for engine control units, body electronics, and ADAS sensor interfaces. The "HE3" variant exists for enhanced whisker testing, but the E3 suffix still satisfies full AEC-Q101 compliance per Vishay documentation.
How does the bi-directional configuration of SMCJ75C-E3/9AT affect PCB layout?
The SMCJ75C-E3/9AT has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. PCB layout requires symmetric 8.0 mm × 8.0 mm copper pads per terminal to achieve specified thermal performance and 1500 W surge rating. No cathode band alignment is needed, simplifying automated optical inspection and reducing assembly error risk.
What is the maximum reverse leakage current for SMCJ75C-E3/9AT at its rated VWM?
At its 75 V stand-off voltage (VWM) and TA = 25 °C, the SMCJ75C-E3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 µA. This ultra-low leakage ensures minimal power loss and signal distortion in high-impedance monitoring circuits, such as those found in precision sensor front-ends or battery management systems where standby current budget is critical.
Can SMCJ75C-E3/9AT replace SMCJ75A-E3/9AT in an existing design?
No - SMCJ75C-E3/9AT is bi-directional while SMCJ75A-E3/9AT is uni-directional. Substituting them requires verifying circuit polarity: the uni-directional version conducts only during reverse bias and blocks forward current, whereas the bi-directional SMCJ75C-E3/9AT clamps surges of either polarity. Using SMCJ75C-E3/9AT in place of SMCJ75A-E3/9AT may cause unintended conduction in DC-biased lines unless system-level analysis confirms bidirectional surge risk.
SMCJ75C-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for SMCJ75C-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ75C-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 SMCJ75C-E3/9AT reliable?
The price and inventory of SMCJ75C-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 SMCJ75C-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ75C-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ75C-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ75C-E3/9AT?
SMCJ75C-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ75C-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 SMCJ75C-E3/9AT?
For technical support, including SMCJ75C-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ75C-E3/9AT requirements.
6.How does Aetrix verify that SMCJ75C-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ75C-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 SMCJ75C-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ75C-E3/9AT?
All SMCJ75C-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ75C-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 SMCJ75C-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ75C-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ75C-E3/9AT Tags
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