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Vishay General Semiconductor - Diodes Division SMCJ150CA-E3/9AT
- Part No.:
- SMCJ150CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150CA-E3/9AT.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,063
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Product details
Overview
SMCJ150CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 150 V standoff voltage (VWM), 243 V clamping voltage (VC) at 6.2 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ150CA-E3/9AT datasheet, SMCJ150CA-E3/9AT pinout, SMCJ150CA-E3/9AT application, or SMCJ150CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification eligibility, RoHS-compliant matte tin plating, MSL Level 1 rating, and thermal resistance (RθJA = 75 °C/W) for surface-mount surge protection in high-reliability environments.
Technical Context
The SMCJ150CA-E3/9AT operates as a bidirectional avalanche diode, leveraging glass-passivated junction technology to deliver symmetrical clamping in both polarities. Its breakdown voltage (VBR) ranges from 167 V to 185 V at 1 mA test current, with temperature coefficient of +0.108 %/°C - ensuring predictable voltage threshold drift across -55 °C to +150 °C operating range.
It responds to transients within picoseconds and maintains low incremental surge resistance under 10/1000 μs surge conditions. The device is rated for non-repetitive peak forward surge current (IFSM) up to 200 A (unidirectional only) and exhibits <1.0 μA reverse leakage at VWM - critical for low-power sensor interface protection without signal degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 12–48 V DC systems with transient headroom. |
| VBR min/max | 167 V / 185 V at 1 mA - guaranteed avalanche onset range; ensures consistent turn-on behavior across production lots and temperature. |
| VC @ IPPM | 243 V at 6.2 A - clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs during ESD/EFT events. |
| PPPM | 1500 W - peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge immunity when properly mounted. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance; requires minimum 8.0 mm × 8.0 mm copper pad per terminal for full derating above 25 °C. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place. |
| Compliance | AEC-Q101 qualified option available (HE3/HM3 suffix); RoHS-compliant matte tin terminals meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2. |
Pinout & Package
SMCJ150CA-E3/9AT uses the SMC (DO-214AB) package: a two-terminal, bidirectional surface-mount device with no polarity marking. Both terminals are electrically symmetric; neither is designated anode or cathode. The case is molded with UL 94 V-0 flammability-rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient voltage input node | Connected to protected line (e.g., CAN_H, 24 V rail, sensor output); conducts surge current to Terminal 2 during overvoltage event. |
| Terminal 2 | Transient voltage return node | Connected to reference plane (e.g., ground, CAN_L, supply return); completes low-inductance path for surge energy dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential lines (e.g., RS-485, CAN bus) without polarity concerns or external circuitry. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (2 Ω source impedance) when mounted on recommended 8.0 mm × 8.0 mm pads. |
| Glass passivated junction | Ensures stable VBR over time and temperature, eliminates moisture sensitivity, and supports long-term reliability in humid or thermally cycling environments. |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility with standard lead-free profiles (peak 260 °C), eliminating bake requirements prior to assembly. |
| Low leakage & fast response | <1.0 μA ID at 150 V and sub-nanosecond response enable use on high-impedance sensor outputs and low-power MCU I/O without loading or latency impact. |
Applications
| Automotive Power Distribution | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protection of 12 V/24 V battery-fed control modules against load dump (ISO 16750-2) and inductive switching transients. IC Role / Device Role / Timing Role: Primary clamping element placed between power rail and ground, absorbing >100 J energy pulses without failure. Use Value: Prevents latch-up or permanent damage to microcontrollers and power management ICs during engine cranking or relay deactivation. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors from EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF), low-leakage shunt clamp that remains transparent during normal operation and activates within 1 ns. Use Value: Maintains signal integrity and measurement accuracy while meeting IEC 61326-1 EMC immunity requirements for industrial instrumentation. |
| Telecom Line Card Protection | Motor Drive Gate Driver Protection |
|
Use Scenario: Safeguarding Ethernet PHY interfaces and PoE injectors against lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pairs (e.g., TX+/TX−) to clamp common-mode and differential-mode transients simultaneously. Use Value: Enables compliance with GR-1089-CORE Level 3 (10/700 μs, 6 kV) without compromising data rate or insertion loss. |
Use Scenario: Protecting high-side/low-side gate drivers (e.g., IR2110, UCC27531) from Miller-induced voltage spikes during MOSFET/IGBT switching. IC Role / Device Role / Timing Role: Fast-acting clamp across driver output and ground, limiting VGS excursion beyond ±20 V absolute maximum ratings. Use Value: Eliminates false turn-on, shoot-through risk, and gate oxide degradation in high-frequency inverters and servo amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA-E3/52T | Same VWM (150 V), lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for load dump or high-current industrial surges | Select when board space is constrained and surge threat level is moderate (e.g., consumer USB ports). |
| 1.5KE150CA | Same VWM/VC specs, axial-leaded DO-201 package, higher RθJA (~50 °C/W on PCB), no MSL rating | Requires through-hole assembly; not compatible with automated SMT lines; less suitable for vibration-prone automotive modules | Choose for legacy designs, prototyping, or cost-sensitive non-automated production where reflow compatibility is not required. |
Compared with SMBJ150CA-E3/52T and 1.5KE150CA, the SMCJ150CA-E3/9AT delivers 2.5× higher surge power handling in an MSL Level 1 SMT package - making it the preferred choice for AEC-Q101-eligible automotive modules, industrial PLC I/O cards, and telecom infrastructure requiring field-reliable, high-energy clamping.
Availability
SMCJ150CA-E3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drive boards, and telecom line card designs requiring stable component supply, RoHS compliance, and AEC-Q101 qualification path support.
Supply support for SMCJ150CA-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, precision, and application-specific optimization.
The SMCJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where sustained surge immunity, thermal stability, and long-term parametric consistency are mandatory.
FAQ
What is the clamping voltage of the SMCJ150CA-E3/9AT at its rated peak pulse current?
The SMCJ150CA-E3/9AT clamps to a maximum of 243 V when subjected to its specified peak pulse current of 6.2 A using the 10/1000 μs waveform. This value is measured under standardized test conditions with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal, and defines the upper voltage limit imposed on protected circuitry during surge events.
Is the SMCJ150CA-E3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
The SMCJ150CA-E3/9AT itself is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101-qualified versions under ordering codes SMCJ150CAHE3_A/I or SMCJ150CAHM3_A/I. These variants share identical electrical characteristics and SMC package but include extended testing and traceability required for automotive use - the SMCJ150CA-E3/9AT serves as the baseline for qualification-ready derivatives.
How does the bidirectional configuration of the SMCJ150CA-E3/9AT affect its use in differential signal lines?
The bidirectional design of the SMCJ150CA-E3/9AT allows it to protect both polarities of a differential pair - such as CAN_H/CAN_L or RS-485 A/B - with a single device placed across the lines. Unlike unidirectional TVS diodes, it requires no grounding reference and provides symmetrical clamping, simplifying layout and eliminating polarity-matching errors during assembly.
What is the maximum operating temperature range for the SMCJ150CA-E3/9AT?
The SMCJ150CA-E3/9AT has a specified operating junction and storage temperature range of -55 °C to +150 °C. This wide range supports deployment in under-hood automotive modules, industrial enclosures exposed to ambient extremes, and outdoor telecom equipment - provided thermal design accounts for RθJA = 75 °C/W and appropriate copper area is used per datasheet recommendations.
Can the SMCJ150CA-E3/9AT be used in place of a unidirectional TVS like SMCJ150A-E3/9AT?
No - the SMCJ150CA-E3/9AT is strictly bidirectional and lacks polarity marking, while the SMCJ150A-E3/9AT is unidirectional with a cathode band. Substituting one for the other risks improper clamping behavior: the bidirectional part will conduct on both half-cycles of an AC signal, whereas the unidirectional part blocks in reverse bias until breakdown. Circuit topology and signal type must match the device's polarity designation.
SMCJ150CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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)
SMCJ150CA-E3/9AT FAQ
1.How can I place an order for SMCJ150CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150CA-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 SMCJ150CA-E3/9AT reliable?
The price and inventory of SMCJ150CA-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 SMCJ150CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ150CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150CA-E3/9AT?
SMCJ150CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150CA-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 SMCJ150CA-E3/9AT?
For technical support, including SMCJ150CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150CA-E3/9AT requirements.
6.How does Aetrix verify that SMCJ150CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ150CA-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 SMCJ150CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ150CA-E3/9AT?
All SMCJ150CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150CA-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 SMCJ150CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ150CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150CA-E3/9AT Tags
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