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Vishay General Semiconductor - Diodes Division SMCJ10-E3/9AT
- Part No.:
- SMCJ10-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ10-E3/9AT.pdf
- Description:
- TVS DIODE 10VWM 18.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,485
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Product details
Overview
SMCJ10-E3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 10 V standoff voltage (VWM), 11.1–12.3 V breakdown range at 1 mA, 17.0 V clamping voltage at 88.2 A peak pulse current, 1500 W peak pulse power rating, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ10-E3/9AT datasheet, SMCJ10-E3/9AT pinout, SMCJ10-E3/9AT application, or SMCJ10-E3/9AT equivalent, this device is selected for high-energy surge suppression in automotive power electronics, industrial sensor interfaces, and DC-DC converter input protection where fast response (<1 ns), low clamping ratio, and stable junction temperature up to +150 °C are critical.
Technical Context
The SMCJ10-E3/9AT operates as a silicon avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients such as ISO 7637-2 pulses or ESD events per IEC 61000-4-2. Its unidirectional polarity-marked with cathode band-supports DC-biased protection paths without reverse conduction during normal operation.
Thermal performance is defined by RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W, supporting sustained 6.5 W power dissipation at TA = 50 °C. The device meets MSL Level 1 (J-STD-020) and JESD 201 Class 1A whisker resistance, confirming suitability for lead-free reflow assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected line's nominal DC voltage. |
| VBR @ IT = 1 mA | 11.1–12.3 V - Breakdown threshold range; ensures reliable turn-on above system operating voltage with margin against tolerance drift. |
| VC @ IPPM = 88.2 A | 17.0 V - Clamped voltage during 10/1000 µs surge; defines maximum stress imposed on downstream ICs during worst-case transient. |
| PPPM | 1500 W - Peak pulse power handling capability; enables protection against high-energy surges like load dump or inductive switching spikes. |
| IFSM | 200 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports single-event fault clearing in power supply inputs. |
| TJ max. | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Leakage @ VWM | 5.0 µA - Reverse leakage at standoff voltage; ensures minimal quiescent power loss and no interference with low-current sensor biasing. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; carries full surge current during clamping event. |
| Cathode | Protected line connection / Surge sink | Connected to line being protected (e.g., 12 V rail); avalanche conduction occurs from cathode to anode when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable avalanche characteristics over lifetime and temperature, eliminating parameter shift due to moisture or contamination ingress. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units, body electronics, and ADAS power supplies. |
| MSL Level 1 rating | Permits unlimited floor life and compatibility with standard lead-free reflow profiles up to 260 °C peak. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving clamping precision for sensitive 3.3 V or 5 V logic interfaces. |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for safety-critical industrial and transportation equipment. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and regulator input to clamp surges >35 V while remaining non-conductive below 10 V. Use Value: Limits peak voltage to 17.0 V during 88.2 A surge, preventing damage to downstream LDOs and microcontrollers rated for ≤20 V absolute maximum. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt transients before reaching op-amp input stage or ADC front-end. Use Value: Sub-1 ns response and 5.0 µA leakage preserve signal integrity and offset accuracy while surviving ±15 kV contact ESD per IEC 61000-4-2. |
| DC-DC Converter Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding isolated DC-DC modules in PoE-powered devices against induced surges on 48 V input lines. IC Role / Device Role / Timing Role: Primary-side TVS placed upstream of input filter capacitor to absorb energy before it reaches transformer primary winding. Use Value: 1500 W peak power rating handles repetitive 10/1000 µs surges without degradation, extending converter MTBF in harsh electrical environments. | Use Scenario: Protecting Ethernet PHY interface power pins from lightning-induced surges entering via long outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS on 3.3 V or 5 V PHY supply rail, coordinated with common-mode chokes and gas discharge tubes. Use Value: 17.0 V clamping voltage ensures PHY ICs remain within safe operating area during 1 kV/0.5 kΩ ring wave tests (IEC 61000-4-5). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/61T | Lower PPPM (400 W), smaller DO-214AC (SMA) package, same VWM/VC specs. | Suitable only for lower-energy transients; not rated for automotive load dump or industrial 1500 W surges. | Select SMCJ10-E3/9AT when 1500 W surge immunity and AEC-Q101 compliance are mandatory. |
| 1.5KE10A | Through-hole TO-218 package, higher thermal mass but incompatible with SMT assembly; identical electrical specs. | Used in legacy designs or high-reliability military/aerospace where through-hole mounting is required. | Choose SMCJ10-E3/9AT for automated manufacturing, space-constrained PCBs, and RoHS-compliant production. |
Compared with SMAJ10A-E3/61T and 1.5KE10A, the SMCJ10-E3/9AT delivers superior surge handling in a compact, AEC-Q101-qualified surface-mount package-enabling automotive-grade protection without sacrificing board area or assembly efficiency.
Availability
SMCJ10-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and DC-DC converter input protection requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for SMCJ10-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, power efficiency, and automotive qualification.
The SMCJ series belongs to Vishay's TRANSZORB® transient voltage suppressor family, engineered specifically for high-energy surge immunity in automotive, industrial, and telecom infrastructure applications where failure is not an option.
FAQ
What is the clamping voltage of the SMCJ10-E3/9AT under maximum rated surge current?
The SMCJ10-E3/9AT has a maximum clamping voltage (VC) of 17.0 V when subjected to its rated peak pulse current (IPPM) of 88.2 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMCJ10-E3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCJ10-E3/9AT suitable for automotive applications?
Yes, the SMCJ10-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its +150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and robust 1500 W surge rating meet requirements for protecting ECUs, body control modules, and ADAS power supplies against load dump and ISO 7637-2 transients. The SMCJ10-E3/9AT is manufactured to Vishay's automotive-grade process controls and traceability standards.
What does the "E3/9AT" suffix indicate in SMCJ10-E3/9AT?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance, while "9AT" specifies packaging in 13-inch diameter plastic tape and reel containing 3500 units. This format supports high-speed automated placement and is optimized for volume SMT production. The SMCJ10-E3/9AT is distinct from HE3 variants, which carry AEC-Q101 qualification and different packaging codes.
How does the SMCJ10-E3/9AT differ from bi-directional TVS diodes like SMCJ10CA?
The SMCJ10-E3/9AT is unidirectional and features a cathode band marking; it conducts only during reverse overvoltage events and blocks forward current. In contrast, SMCJ10CA is bi-directional with no polarity marking and clamps surges of either polarity-making it suitable for AC lines or differential data signals. The SMCJ10-E3/9AT offers tighter leakage control (5.0 µA vs. 1000 µA for SMCJ5.0CA) and is preferred for DC rail protection where forward conduction must be avoided.
What is the thermal resistance of the SMCJ10-E3/9AT, and how does it affect layout design?
The SMCJ10-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal, and RθJL = 15 °C/W junction-to-lead. To maintain safe operation at 6.5 W continuous dissipation, PCB layout must provide adequate copper area and thermal vias-especially for automotive or industrial applications where ambient temperatures exceed 50 °C. The SMCJ10-E3/9AT's thermal performance directly impacts long-term reliability under repeated surge stress.
SMCJ10-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 79.8A
- 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)
SMCJ10-E3/9AT FAQ
1.How can I place an order for SMCJ10-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ10-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 SMCJ10-E3/9AT reliable?
The price and inventory of SMCJ10-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 SMCJ10-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ10-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ10-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ10-E3/9AT?
SMCJ10-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ10-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 SMCJ10-E3/9AT?
For technical support, including SMCJ10-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ10-E3/9AT requirements.
6.How does Aetrix verify that SMCJ10-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ10-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 SMCJ10-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ10-E3/9AT?
All SMCJ10-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ10-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 SMCJ10-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ10-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ10-E3/9AT Tags
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