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Vishay General Semiconductor - Diodes Division SMCJ150-E3/9AT
- Part No.:
- SMCJ150-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150-E3/9AT.pdf
- Description:
- TVS DIODE 150VWM 268VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,035
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Product details
Overview
SMCJ150-E3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for high-energy surge protection with 150 V standoff voltage, 167–185 V breakdown range at 1 mA, 1500 W peak pulse power, and clamping voltage of 243 V at 6.2 A. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMCJ150-E3/9AT datasheet, SMCJ150-E3/9AT pinout, SMCJ150-E3/9AT application, or SMCJ150-E3/9AT equivalent, key selection criteria include unidirectional polarity, 150 V working voltage, 243 V clamping under 10/1000 µs surge, AEC-Q101 qualification, and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with sensitive downstream circuitry, activating when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 µA at 150 V) and fast response time (<1 ns), while low incremental surge resistance enables effective energy diversion during transients induced by inductive switching or ESD events.
Designed for surface-mount placement on 8.0 mm × 8.0 mm copper pads per terminal, it delivers 1500 W peak pulse power handling with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead). The device is rated for operation from –55 °C to +150 °C and meets MSL Level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 167 V / 185 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on margin above VWM |
| VC @ IPPM | 243 V at 6.2 A - Clamping voltage under standardized 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 1500 W - Peak pulse power dissipation capability for transient suppression without failure |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage preserves system standby current and signal integrity |
| TJ max | +150 °C - Maximum junction temperature enabling use in under-hood automotive environments |
| Package | DO-214AB (SMCJ) - Industry-standard surface-mount outline with cathode band marking |
Pinout & Package
DO-214AB (SMCJ) package with molded plastic body, matte tin-plated leads, and cathode band marking on one end. Designed for automated placement and reflow soldering per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (cathode-banded end is cathode) | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 150 V supply rail or signal trace) to divert surges to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Glass passivated junction | Ensures stable electrical parameters over lifetime and immunity to moisture-induced degradation |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak without preconditioning |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision |
| RoHS-compliant E3 suffix | Meets JEDEC JESD201 Class 1A whisker resistance and UL 94 V-0 flammability |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges exceeding 150 V. Use Value: Limits peak voltage to 243 V during 10/1000 µs pulses, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors. IC Role / Device Role / Timing Role: TVS connected across signal and return paths to absorb ESD and switching noise. Use Value: Sub-1 ns response and ≤1.0 µA leakage preserve signal accuracy and minimize offset drift in precision measurement circuits. |
| Telecom DC Power Input Protection | Consumer Device USB/DC Jack Protection |
Use Scenario: Securing primary DC input (e.g., 48 V PoE injectors) against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-stage clamping device upstream of DC-DC converters and hot-swap controllers. Use Value: 1500 W PPPM rating handles multi-kA surge currents without thermal runaway, supporting IEC 61000-4-5 compliance. | Use Scenario: Adding robustness to wall-adapter inputs in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Standoff-rated TVS on main DC input to prevent latch-up or gate oxide rupture in PMICs. Use Value: 150 V VWM avoids false triggering during normal 12–19 V adapter ripple, while 243 V VC prevents downstream component overstress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR/VC specs | Not suitable for >500 W surge environments; limited thermal mass for repeated transients | Select when board space is constrained and surge energy is ≤400 W |
| SMCJ150AHE3/9AT | Identical electrical specs but AEC-Q101 qualified version (HE3 suffix); same DO-214AB package | Required for automotive OEM designs requiring full qualification documentation and traceability | Choose for automotive production where AEC-Q101 certification is mandatory |
Compared with SMCJ150-E3/9AT, SMAJ150A-E3/61T offers footprint reduction at the cost of 73 % lower surge power handling, while SMCJ150AHE3/9AT provides identical protection performance with formal automotive qualification-making it the drop-in replacement for Tier 1 supply chain requirements.
Availability
SMCJ150-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, and telecom DC input hardening requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ150-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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the maximum clamping voltage of the SMCJ150-E3/9AT under standard surge conditions?
The SMCJ150-E3/9AT has a maximum clamping voltage (VC) of 243 V when subjected to a 10/1000 µs waveform at its peak pulse current of 6.2 A. This value is measured per ANSI/IEEE C62.35 and ensures predictable voltage limiting during real-world transients such as load dump or inductive switching. The SMCJ150-E3/9AT maintains this clamping performance across its specified operating temperature range.
Is the SMCJ150-E3/9AT suitable for automotive applications?
Yes, the SMCJ150-E3/9AT is RoHS-compliant and manufactured to commercial-grade specifications, but it is not AEC-Q101 qualified. For automotive applications requiring formal qualification, the SMCJ150AHE3/9AT variant should be used instead. The SMCJ150-E3/9AT remains appropriate for non-OEM automotive aftermarket or industrial systems where AEC-Q101 is not mandated. Its 150 V VWM and 243 V VC align with common 12 V/24 V rail protection needs in the SMCJ150-E3/9AT family.
What does the "E3/9AT" suffix indicate in SMCJ150-E3/9AT?
The "E3" suffix denotes RoHS-compliant construction with matte tin-plated leads meeting JESD201 Class 1A whisker resistance, while "9AT" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 3500 units. This format supports high-volume automated assembly. The SMCJ150-E3/9AT uses the DO-214AB (SMCJ) case and is distinct from HE3-suffixed variants that carry AEC-Q101 qualification. All markings and thermal ratings apply specifically to the SMCJ150-E3/9AT configuration.
How does the SMCJ150-E3/9AT compare to bi-directional TVS diodes like SMCJ150CA?
The SMCJ150-E3/9AT is unidirectional and intended for DC line protection where polarity is fixed, offering lower leakage (<1.0 µA at 150 V) and no reverse conduction path. In contrast, SMCJ150CA is bi-directional and suited for AC-coupled or floating signal lines, with symmetric clamping in both directions but higher leakage (up to 2.0 µA). The SMCJ150-E3/9AT cannot replace SMCJ150CA in AC applications due to its inherent polarity dependence and lack of reverse breakdown symmetry.
What PCB layout guidance applies to the SMCJ150-E3/9AT for optimal thermal and electrical performance?
For optimal performance, mount the SMCJ150-E3/9AT on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Avoid narrow traces between the device and ground plane to minimize inductance during surge events. Thermal relief should be minimized to maintain low RθJA (75 °C/W). The SMCJ150-E3/9AT cathode band must be correctly oriented toward the protected line, and no silkscreen should obscure the marking. These practices ensure the SMCJ150-E3/9AT achieves its rated 1500 W PPPM and 243 V clamping.
SMCJ150-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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 268V
- Current - Peak Pulse (10/1000µs):
- 5.6A
- 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)
SMCJ150-E3/9AT FAQ
1.How can I place an order for SMCJ150-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150-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 SMCJ150-E3/9AT reliable?
The price and inventory of SMCJ150-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 SMCJ150-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ150-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150-E3/9AT?
SMCJ150-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150-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 SMCJ150-E3/9AT?
For technical support, including SMCJ150-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150-E3/9AT requirements.
6.How does Aetrix verify that SMCJ150-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ150-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 SMCJ150-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ150-E3/9AT?
All SMCJ150-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150-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 SMCJ150-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ150-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150-E3/9AT Tags
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