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Vishay General Semiconductor - Diodes Division SMCJ7.5C-E3/57T
- Part No.:
- SMCJ7.5C-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5C-E3/57T.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,527
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Product details
Overview
SMCJ7.5C-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 7.5 V stand-off voltage (VWM), 12.9 V maximum clamping voltage (VC) at 116.3 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMCJ7.5C-E3/57T datasheet, SMCJ7.5C-E3/57T pinout, SMCJ7.5C-E3/57T application, or SMCJ7.5C-E3/57T equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, low incremental surge resistance, UL 94 V-0 molding compound, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ7.5C-E3/57T operates as a bi-directional avalanche diode, exhibiting symmetrical breakdown behavior in both polarities with VBR min/max of 8.33 V / 9.21 V at 1.0 mA test current. Its clamping action begins at VWM = 7.5 V and limits transient energy via low dynamic impedance, enabling effective protection of downstream ICs without polarity constraints.
Thermally, it supports junction temperatures from –55 °C to +150 °C, with RθJA = 75 °C/W and RθJL = 15 °C/W, and is rated for 200 A non-repetitive forward surge (IFSM) only in uni-directional variants - not applicable here due to bi-directional construction. The device meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - guaranteed symmetric breakdown threshold in both directions |
| VC @ IPPM | 12.9 V at 116.3 A - peak clamped voltage during 10/1000 µs transient, limiting stress on protected circuitry |
| PPPM | 1500 W - peak transient power handling capacity under standardized surge waveform |
| ID @ VWM | 100 µA - low leakage ensures minimal standby power loss and signal integrity in high-impedance lines |
| Package | DO-214AB (SMCJ) - surface-mount, low-profile case with matte tin-plated leads, UL 94 V-0 compliant |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SMCJ7.5C-E3/57T uses the DO-214AB (SMCJ) package: a bi-directional device with no polarity marking; terminals are symmetrical and interchangeable. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per lead for thermal and surge performance compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction between terminals; either terminal serves as input/output for transient suppression |
| Lead 1 | Terminal A | Matte tin-plated, solderable per J-STD-002; supports reflow profiles up to 260 °C peak |
| Lead 2 | Terminal B | Identical to Lead 1; bidirectional conduction enables placement without orientation verification |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated for automotive environments including engine control units and ADAS sensor interfaces |
| Low clamping ratio (VC/VWM = 1.72) | Minimizes overvoltage exposure during transients compared to higher-ratio TVS devices |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
| Glass passivated junction | Ensures stable breakdown characteristics and long-term reliability under repeated surge stress |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. 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 ≤12.9 V while sustaining 116.3 A surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V sensor front-ends. |
Use Scenario: Safeguarding PLC digital input modules against inductive switching spikes from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input rails to shunt surge energy before reaching optocoupler or MCU GPIO protection networks. Use Value: Clamps 1500 W transients within nanoseconds, eliminating need for additional RC snubbers or varistors in space-constrained DIN-rail enclosures. |
| Telecom Line Interface | Consumer Device USB Port |
Use Scenario: Shielding RS-485 transceivers in base station backhaul links from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bi-directional TVS placed differentially across A/B bus lines and common-mode across line-to-ground. Use Value: Symmetric VBR ensures balanced clamping, maintaining signal common-mode rejection ratio (CMRR) during 10/1000 µs threats up to 1 kV. |
Use Scenario: ESD and surge protection for USB 2.0 data lines (D+/D−) in portable media players and smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp integrated into USB connector PCB footprint to meet IEC 61000-4-2 Level 4. Use Value: 100 µA max leakage at 7.5 V avoids pull-up/pull-down interference, while 12.9 V VC prevents damage to 3.3 V PHY transceivers during hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5CA-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (12.0 V at 32.4 A) | Suitable for lower-energy transients; limited to consumer-grade designs without AEC-Q101 validation | Select when board space is constrained and surge threat level is below ISO 16750-2 Pulse 5a requirements |
| SMCJ7.5CAHE3/57T | Identical electrical specs but with HE3 suffix - AEC-Q101 qualified and JESD 201 Class 2 whisker tested | Same automotive use cases, but enhanced process controls for safety-critical ECUs requiring extended whisker reliability | Choose for ASIL-B systems where long-term intermetallic growth risk must be minimized beyond standard AEC-Q101 |
Compared with SMCJ7.5C-E3/57T, SMAJ7.5CA-E3/61T offers reduced surge robustness in a smaller footprint, while SMCJ7.5CAHE3/57T delivers identical clamping performance with upgraded mechanical reliability - making the latter optimal for high-integrity automotive subsystems.
Availability
SMCJ7.5C-E3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMCJ7.5C-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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMCJ series was developed to deliver high-power transient suppression in compact surface-mount packages for AEC-Q101-compliant automotive electronics and ruggedized industrial control systems.
FAQ
What does the "C" suffix indicate in SMCJ7.5C-E3/57T?
The "C" suffix in SMCJ7.5C-E3/57T denotes bi-directional configuration, meaning the device provides symmetrical transient suppression in both polarities. Unlike uni-directional variants (e.g., SMCJ7.5A), it has no cathode marking and is used where signal lines lack defined polarity - such as differential buses or AC-coupled interfaces. This makes SMCJ7.5C-E3/57T ideal for protecting RS-485, CAN, or sensor bridge outputs without orientation constraints.
Is SMCJ7.5C-E3/57T RoHS compliant and halogen-free?
Yes, SMCJ7.5C-E3/57T carries the "E3" suffix, confirming full RoHS compliance per Directive 2011/65/EU and halogen-free status per JEDEC JS709A. The molding compound meets UL 94 V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 solderability standards. These attributes are verified in Vishay's material declarations and apply directly to the SMCJ7.5C-E3/57T production lot.
What is the maximum clamping voltage for SMCJ7.5C-E3/57T under surge conditions?
The maximum clamping voltage (VC) for SMCJ7.5C-E3/57T is 12.9 V, measured at its rated peak pulse current (IPPM) of 116.3 A using the standardized 10/1000 µs waveform. This value is guaranteed across temperature and lifetime per Vishay's characterization data and defines the upper voltage limit imposed on protected circuitry during worst-case transients - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces downstream of the SMCJ7.5C-E3/57T.
Can SMCJ7.5C-E3/57T replace SMCJ7.5A-E3/57T in an existing design?
No - SMCJ7.5C-E3/57T cannot directly replace SMCJ7.5A-E3/57T without layout review. While both share identical package (DO-214AB), VWM (7.5 V), and PPPM (1500 W), the "A" suffix indicates uni-directional operation with cathode marking and forward voltage drop (VF = 3.5 V at 100 A), whereas the "C" variant is bi-directional with no polarity and no VF specification. Substitution may cause unintended conduction in DC-biased paths or fail to suppress negative-going transients in uni-directional designs.
Does SMCJ7.5C-E3/57T require derating at elevated ambient temperatures?
Yes, SMCJ7.5C-E3/57T must be derated above TA = 25 °C per Figure 2 in Vishay document 88394. Its peak pulse power (PPPM) decreases linearly with junction temperature, reaching ~75% of 1500 W at 75 °C ambient when mounted on recommended 8.0 mm × 8.0 mm copper pads. Thermal resistance values (RθJA = 75 °C/W, RθJL = 15 °C/W) confirm that sustained high-temperature operation demands careful PCB copper area allocation - especially in engine bay or industrial enclosure applications where SMCJ7.5C-E3/57T is commonly deployed.
SMCJ7.5C-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 104.9A
- 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)
SMCJ7.5C-E3/57T FAQ
1.How can I place an order for SMCJ7.5C-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5C-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 SMCJ7.5C-E3/57T reliable?
The price and inventory of SMCJ7.5C-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 SMCJ7.5C-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ7.5C-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5C-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5C-E3/57T?
SMCJ7.5C-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5C-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 SMCJ7.5C-E3/57T?
For technical support, including SMCJ7.5C-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5C-E3/57T requirements.
6.How does Aetrix verify that SMCJ7.5C-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5C-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 SMCJ7.5C-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ7.5C-E3/57T?
All SMCJ7.5C-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5C-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 SMCJ7.5C-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ7.5C-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5C-E3/57T Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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