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Vishay General Semiconductor - Diodes Division SMCJ5.0-E3/9AT
- Part No.:
- SMCJ5.0-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0-E3/9AT.pdf
- Description:
- TVS DIODE 5VWM 9.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,646
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Product details
Overview
SMCJ5.0-E3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 5.0 V stand-off voltage (VWM), 6.40–7.07 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (10/1000 µs), 163 A peak pulse current (IPPM), and clamps to ≤9.2 V at rated surge. It is widely deployed in automotive ECUs and industrial power supplies.
For engineers reviewing the SMCJ5.0-E3/9AT datasheet, SMCJ5.0-E3/9AT pinout, SMCJ5.0-E3/9AT application, or SMCJ5.0-E3/9AT equivalent, key selection criteria include unidirectional polarity, 1500 W surge rating, DO-214AB thermal performance (RθJA = 75 °C/W), AEC-Q101 qualification, and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
This TVS diode operates as a clamping device-conducting only when reverse voltage exceeds VBR, limiting transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable leakage (<1000 µA at VWM) and fast response (<1 ns), while low incremental surge resistance enables effective suppression of inductive switching spikes and ESD events.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with derated power above 25 °C ambient. Its 0.31" × 0.31" copper pad layout requirement supports reliable thermal dissipation during repetitive surges, and MSL Level 1 moisture sensitivity allows standard SMT reflow without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR min/max | 6.40 V / 7.07 V at 10 mA - Confirmed breakdown range ensures predictable turn-on across production lot. |
| VC @ IPPM | ≤9.2 V at 163 A - Clamping voltage under full 1500 W surge; determines maximum stress on protected IC. |
| PPPM | 1500 W (10/1000 µs) - Peak surge handling capacity for automotive load-dump and ISO 7637-2 Pulse 5a compliance. |
| ID @ VWM | ≤1000 µA - Low leakage preserves system standby power and avoids false triggering in high-impedance circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance with recommended 8.0 mm × 8.0 mm copper pads; informs heatsinking requirements. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 reliability standards. E3 suffix indicates RoHS-compliant commercial grade with JESD201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected circuit ground | Completes conduction path during reverse-biased transient; must be routed with low-inductance ground plane. |
| Cathode (banded end) | High-side connection to protected line (e.g., 5 V rail) | Reverse-biased terminal during normal operation; carries full surge current into ground during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per JESD47. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over time and temperature, critical for long-life systems. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-bake, reducing manufacturing complexity. |
| 1500 W 10/1000 µs rating | Meets ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 surge immunity requirements. |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage overshoot during fast transients, protecting sensitive 5 V logic and microcontrollers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V supply lines in engine control units (ECUs) against alternator load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 5 V rail and chassis ground, activated within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤9.2 V, preventing latch-up or permanent damage to MCU and CAN transceivers powered from same rail. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules from cable-induced surges. IC Role / Device Role / Timing Role: Front-end TVS on 5 V sensor excitation line, absorbing coupling from nearby motor drives or relay coils. Use Value: Maintains signal integrity by clamping transients before they reach precision ADC inputs, avoiding measurement corruption or reset events. |
| Consumer USB Power Input Protection | Telecom DC Feeder Line Protection |
|
Use Scenario: Safeguarding USB-C PD input stages in portable medical devices against hot-plug and ESD events. IC Role / Device Role / Timing Role: Primary TVS on VBUS line upstream of buck converter, conducting surge current away from power management IC. Use Value: Withstands ±15 kV contact ESD (IEC 61000-4-2) and limits voltage to <9.2 V, preserving USB PD controller functionality. |
Use Scenario: Protecting 5 V bias feeders in optical network terminals (ONTs) exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Standoff-rated TVS on DC feeder line entering sealed enclosure, shunting induced common-mode energy to local ground. Use Value: 1500 W rating handles multi-kA induced surges per IEC 61000-4-5, preventing burnout of downstream DC-DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A-E3/61T | Lower PPPM (400 W), SMA package (DO-214AC), higher RθJA (110 °C/W), same VWM/VBR range. | Suitable for lower-energy surges (e.g., IEC 61000-4-2 ESD only); not recommended for load dump or high-repetition transients. | Select when board space is constrained and surge threat level is limited to human-body-model ESD. |
| SMCJ5.0AHE3/9AT | Identical electrical specs, but AEC-Q101 qualified (HE3 suffix) vs. commercial-grade (E3); same DO-214AB package and marking. | Required for automotive OEM designs where component-level qualification is mandated; otherwise functionally interchangeable. | Choose SMCJ5.0AHE3/9AT for Tier 1 automotive programs; SMCJ5.0-E3/9AT suffices for industrial or consumer applications. |
Compared with SMAJ5.0A-E3/61T, SMCJ5.0-E3/9AT delivers 3.75× higher surge power handling and superior thermal performance; versus SMCJ5.0AHE3/9AT, it offers identical protection capability at lower cost where AEC-Q101 is not required.
Availability
SMCJ5.0-E3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power feeders requiring stable component supply and RoHS-compliant packaging.
Supply support for SMCJ5.0-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, high-power transient suppression in harsh environments-including under-hood automotive, factory automation, and outdoor telecom infrastructure.
FAQ
What is the polarity configuration of the SMCJ5.0-E3/9AT?
The SMCJ5.0-E3/9AT is a unidirectional TVS diode, with the banded end indicating the cathode terminal. During normal operation, it blocks reverse current up to 5.0 V (VWM); when a transient exceeds its breakdown voltage (6.40–7.07 V), it conducts in reverse bias to clamp the voltage. This configuration is essential for DC rail protection where polarity is fixed, unlike bi-directional variants marked with "CA" suffix.
Does the SMCJ5.0-E3/9AT meet automotive qualification standards?
The SMCJ5.0-E3/9AT is RoHS-compliant and manufactured to commercial-grade specifications (E3 suffix). While it shares the same DO-214AB package and core electrical specs as the AEC-Q101-qualified SMCJ5.0AHE3/9AT, the SMCJ5.0-E3/9AT itself is not AEC-Q101 certified. For automotive applications requiring formal qualification, engineers should specify the HE3 variant instead.
What is the maximum clamping voltage of the SMCJ5.0-E3/9AT under surge conditions?
The SMCJ5.0-E3/9AT has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current (IPPM) of 163 A, measured using the standardized 10/1000 µs waveform. This value represents the highest voltage that will appear across the protected circuit during a full 1500 W transient event, making it suitable for safeguarding 5 V logic systems with adequate margin.
Can the SMCJ5.0-E3/9AT be used in bi-directional signal line protection?
No-the SMCJ5.0-E3/9AT is strictly unidirectional and must not be used on AC or bidirectional signal paths. For such applications, engineers must select the bi-directional variant SMCJ5.0CA-E3/9AT, which has symmetric breakdown characteristics and no polarity marking. Using the unidirectional SMCJ5.0-E3/9AT on a bi-directional line risks forward conduction and failure during negative half-cycles.
What PCB layout guidance applies to the SMCJ5.0-E3/9AT for optimal thermal performance?
To achieve the specified RθJA of 75 °C/W and sustain repeated surges, the SMCJ5.0-E3/9AT must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as defined in the Vishay datasheet. Narrow traces or undersized pads increase thermal resistance, causing junction temperature rise and potential parametric shift or failure during high-energy transients.
SMCJ5.0-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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.6V
- Current - Peak Pulse (10/1000µs):
- 156.3A
- 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)
SMCJ5.0-E3/9AT FAQ
1.How can I place an order for SMCJ5.0-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0-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 SMCJ5.0-E3/9AT reliable?
The price and inventory of SMCJ5.0-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 SMCJ5.0-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ5.0-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0-E3/9AT?
SMCJ5.0-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0-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 SMCJ5.0-E3/9AT?
For technical support, including SMCJ5.0-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0-E3/9AT requirements.
6.How does Aetrix verify that SMCJ5.0-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0-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 SMCJ5.0-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ5.0-E3/9AT?
All SMCJ5.0-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0-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 SMCJ5.0-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ5.0-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ5.0-E3/9AT Tags
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