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Vishay General Semiconductor - Diodes Division SMCJ7.5C-E3/9AT
- Part No.:
- SMCJ7.5C-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5C-E3/9AT.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,132
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Product details
Overview
SMCJ7.5C-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 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 in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the SMCJ7.5C-E3/9AT datasheet, SMCJ7.5C-E3/9AT pinout, SMCJ7.5C-E3/9AT application, or SMCJ7.5C-E3/9AT equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, low incremental surge resistance, MSL Level 1 rating, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ7.5C-E3/9AT operates as a bi-directional avalanche diode, symmetrically clamping both positive and negative transients without polarity dependence. Its breakdown voltage (VBR) ranges from 8.33 V to 9.21 V at 1.0 mA test current, with ≤1.0 μA reverse leakage at 7.5 V stand-off voltage.
It delivers 1500 W peak pulse power handling under standardized 10/1000 μs waveform conditions, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), enabling robust transient energy absorption in compact surface-mount form.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - ensures reliable avalanche initiation across production lot |
| VC @ IPPM | 12.9 V at 116.3 A - limits downstream voltage stress during 1500 W transient events |
| PPPM | 1500 W - peak surge power handling per 10/1000 μs waveform, critical for ISO 7637-2 compliance |
| ID @ VWM | ≤1.0 μA - ultra-low leakage preserves signal integrity in high-impedance sensor interfaces |
| TJ max | +150 °C - supports operation in under-hood automotive environments and industrial enclosures |
| MSL Level | Level 1 (J-STD-020) - allows unlimited floor life and reflow up to 260 °C peak |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, bi-directional device with no polarity marking - terminals are symmetrical anode/cathode junctions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional clamping: either terminal serves as cathode depending on transient polarity |
| Case (cathode band absent) | Thermal and mechanical anchor | No polarity marking required; mounted on 8.0 mm × 8.0 mm copper pads per datasheet fig. 2 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Enhances long-term stability and moisture resistance in harsh environments |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 16750-2 load dump) |
| Matte tin plated leads | Ensures solderability per J-STD-002 and JESD 22-B102, compatible with lead-free reflow |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive electronics |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ESD and load-dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional clamping element placed directly at connector entry point to shunt surge energy before it reaches IC pins. Use Value: Limits voltage to ≤12.9 V during 116.3 A surges, preserving signal integrity and preventing latch-up in 5 V–12 V sensor front-ends. | Use Scenario: Safeguarding PLC digital input modules against induced surges from relay coil switching and motor drive noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input lines, coordinated with series impedance for IEC 61000-4-5 level 4 compliance. Use Value: Absorbs 1500 W transient energy without degradation, maintaining system uptime in factory automation environments. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: First-stage TVS on RJ45 line-side traces, paired with common-mode chokes for differential-mode suppression. Use Value: Clamps bidirectional transients within 1 ns response time, meeting ITU-T K.21 basic protection requirements. | Use Scenario: Input-stage surge protection for AC-DC adapters in smart home hubs and set-top boxes exposed to mains-borne transients. IC Role / Device Role / Timing Role: Secondary clamp after MOV, limiting let-through voltage to downstream rectifier and controller ICs. Use Value: Provides precise 7.5 V stand-off with <1 μA leakage, avoiding standby power loss while ensuring EN 61000-4-5 compliance. |
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 space-constrained consumer designs where 1500 W surge margin is not required | Select when board area is limited and peak surge energy is ≤400 W |
| 1.5KE7.5CA | Through-hole TO-218 package, same VWM/VC specs but higher thermal mass and lower mounting density | Used in legacy industrial power supplies requiring manual assembly or high-reliability through-hole construction | Choose for repairability, high-temperature derating, or compatibility with existing through-hole layouts |
Compared with SMCJ7.5C-E3/9AT, SMAJ7.5CA-E3/61T offers footprint reduction at the cost of surge capacity, while 1.5KE7.5CA provides mechanical robustness and thermal inertia in non-SMT systems - all three share identical bi-directional clamping behavior and 7.5 V stand-off, but differ in package scalability, power handling, and assembly process fit.
Availability
SMCJ7.5C-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface design, and telecom line interface applications requiring stable component supply and AEC-Q101-compliant surge immunity.
Supply support for SMCJ7.5C-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 and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® TVS family, engineered for high-energy transient suppression in automotive, industrial, and communications systems where bi-directional clamping and AEC-Q101 qualification are mandatory.
FAQ
What is the clamping voltage of SMCJ7.5C-E3/9AT under maximum rated surge current?
The SMCJ7.5C-E3/9AT has a maximum clamping voltage (VC) of 12.9 V when subjected to its peak pulse current (IPPM) of 116.3 A using the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and ensures downstream circuitry remains below safe voltage thresholds during transient events. The SMCJ7.5C-E3/9AT maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMCJ7.5C-E3/9AT suitable for automotive applications?
Yes, the SMCJ7.5C-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its bi-directional architecture, 1500 W surge rating, and MSL Level 1 reflow compatibility meet stringent OEM requirements. The SMCJ7.5C-E3/9AT also complies with ISO 7637-2 and ISO 16750-2 test profiles when implemented with proper PCB layout per Vishay's recommended 8.0 mm × 8.0 mm copper pads.
How does the bi-directional functionality of SMCJ7.5C-E3/9AT affect its circuit placement?
The SMCJ7.5C-E3/9AT has no polarity marking and functions identically in both directions, allowing placement across any two nodes subject to bidirectional transients - such as differential data lines (CAN, RS-485) or AC-coupled power rails. Unlike uni-directional TVS diodes, the SMCJ7.5C-E3/9AT eliminates orientation errors during automated placement and simplifies schematic symbol usage. Its symmetrical structure means the SMCJ7.5C-E3/9AT performs identically regardless of which terminal connects to line or ground.
What is the thermal resistance of SMCJ7.5C-E3/9AT, and how does it impact layout?
The SMCJ7.5C-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. These values require adherence to Vishay's minimum pad layout: 0.31" × 0.31" (8.0 mm × 8.0 mm) copper areas per terminal to achieve rated power dissipation. Deviating from this layout reduces surge capability and risks thermal runaway during repetitive transients. The SMCJ7.5C-E3/9AT must be placed away from heat sources and with adequate copper pour to maintain TJ ≤ 150 °C.
Does SMCJ7.5C-E3/9AT meet RoHS and halogen-free standards?
Yes, the SMCJ7.5C-E3/9AT carries the "E3" suffix indicating RoHS-compliant construction per Directive 2011/65/EU and halogen-free status per JEDEC JS709A. Its matte tin-plated leads comply with JESD 22-B102 solderability standards and JESD 201 Class 1A whisker resistance. The molding compound meets UL 94 V-0 flammability rating. All compliance documentation for the SMCJ7.5C-E3/9AT is available through Vishay's material categorization portal (doc?99912).
SMCJ7.5C-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):
- 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-E3/9AT FAQ
1.How can I place an order for SMCJ7.5C-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5C-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 SMCJ7.5C-E3/9AT reliable?
The price and inventory of SMCJ7.5C-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 SMCJ7.5C-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ7.5C-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5C-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5C-E3/9AT?
SMCJ7.5C-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5C-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 SMCJ7.5C-E3/9AT?
For technical support, including SMCJ7.5C-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5C-E3/9AT requirements.
6.How does Aetrix verify that SMCJ7.5C-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5C-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 SMCJ7.5C-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ7.5C-E3/9AT?
All SMCJ7.5C-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5C-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 SMCJ7.5C-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ7.5C-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5C-E3/9AT Tags
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