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Vishay General Semiconductor - Diodes Division SMCJ150HE3/9AT
- Part No.:
- SMCJ150HE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150HE3/9AT.pdf
- Description:
- TVS DIODE 150VWM 268VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,054
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Product details
Overview
SMCJ150HE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for high-energy surge protection on power and signal lines. It features a 150 V standoff voltage (VWM), 167–185 V breakdown range (VBR), 1500 W peak pulse power (PPPM), clamping voltage of 243 V at 6.2 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ150HE3/9AT datasheet, SMCJ150HE3/9AT pinout, SMCJ150HE3/9AT application, or SMCJ150HE3/9AT equivalent, this device is selected for robust overvoltage protection in automotive power supplies, industrial motor drives, and DC bus interfaces where fast response (<1 ns), low clamping ratio, and high surge current tolerance are critical.
Technical Context
The SMCJ150HE3/9AT operates as a unidirectional avalanche diode with glass-passivated junction, optimized for clamping transients induced by inductive switching, load dump, and ESD events. Its 10/1000 μs waveform rating supports IEC 61000-4-5 Level 4 compliance when properly mounted on 8.0 mm × 8.0 mm copper pads.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, enabling operation up to TJ = 150 °C. The HE3 suffix confirms AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and RoHS compliance - distinguishing it from commercial-grade E3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for normal circuit operation. |
| VBR min/max | 167 V / 185 V at IT = 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on under surge conditions. |
| VC @ IPPM | 243 V at 6.2 A - Clamped voltage during 1500 W transient; defines worst-case voltage seen by protected downstream circuitry. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; enables protection against severe lightning-induced surges. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive use with thermal derating above 25 °C ambient. |
| Package | DO-214AB (SMCJ) - Surface-mount, low-profile case with matte tin-plated leads; compatible with automated placement and reflow soldering. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units, body electronics, and ADAS power rails. |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with J-bend leads; cathode indicated by band on one end; terminals are anode and cathode; polarity-sensitive for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line; conducts transient energy to ground or lower-potential rail during overvoltage event. |
| Anode | Reference node | Typically tied to system ground or return path; completes clamping loop during avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Peak pulse power | 1500 W - Enables single-device protection against IEC 61000-4-5 4 kV/2 Ω surge tests on 12 V/24 V systems. |
| Clamping ratio (VC/VBR) | ~1.45 - Low ratio ensures minimal overvoltage stress on downstream MOSFETs, ICs, and sensors during clamping. |
| Response time | <1 ns - Fast avalanche onset prevents voltage overshoot beyond rated VC, critical for protecting sensitive gate drivers. |
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity, and mechanical shock - required for front-end power rail protection in OEM designs. |
| MSL Level 1 | Rated for reflow up to 260 °C peak - eliminates moisture sensitivity concerns during standard PCB assembly processes. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground to clamp surges up to ±120 V. Use Value: Withstands 1500 W pulses and maintains clamping below 243 V, preventing damage to CAN transceivers and microcontrollers. |
Use Scenario: Safeguarding IGBT gate drivers and bus capacitors in variable-frequency drives subjected to inductive kickback. IC Role / Device Role / Timing Role: Mounted across DC link to absorb regenerative energy spikes during rapid deceleration. Use Value: 167–185 V VBR aligns with 200 V-rated bus components; 243 V VC limits stress on 300 V-rated electrolytics. |
| Telecom Power Supply Input | Consumer Appliance Main Board |
|
Use Scenario: Input-stage surge suppression on 48 V PoE-powered equipment exposed to lightning-induced surges on Ethernet lines. IC Role / Device Role / Timing Role: Front-end TVS on primary DC input, upstream of DC/DC converters and PMICs. Use Value: 1500 W PPPM and 6.2 A IPPM meet IEC 61000-4-5 Level 4 requirements without series impedance compromise. |
Use Scenario: Overvoltage protection on AC/DC adapter outputs feeding main control boards in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Unidirectional clamp on 12 V or 24 V logic supply rails to prevent latch-up during brownout recovery. Use Value: AEC-Q101 qualification ensures long-term reliability under thermal cycling and vibration typical of white-goods environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ150A | Same DO-214AC (SMA) package; lower PPPM (400 W); VBR 167–185 V; no AEC-Q101 qualification. | Restricted to commercial/industrial use; unsuitable for automotive under-hood deployment. | Select only for cost-sensitive non-automotive designs where 400 W surge margin suffices. |
| ON Semiconductor 1.5SMC150A | DO-214AB package; identical VWM/VBR/VC specs; 1500 W PPPM; AEC-Q101 qualified; RoHS compliant but HE3 whisker class not specified. | Drop-in replacement in layout; same thermal and electrical behavior; requires verification of whisker test compliance for high-reliability programs. | Preferred for dual-sourcing where Vishay supply constraints exist; confirm JESD 201 Class 2 alignment with program requirements. |
Compared with SMCJ150HE3/9AT, the SMAJ150A offers lower surge capacity and lacks automotive qualification, while the 1.5SMC150A matches key ratings and package but requires validation of whisker resistance class for mission-critical automotive use.
Availability
SMCJ150HE3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive DC bus safeguarding, and telecom 48 V input surge suppression requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCJ150HE3/9AT 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 automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom infrastructure where failure modes must be mitigated via robust clamping and validated qualification.
FAQ
What is the maximum clamping voltage of the SMCJ150HE3/9AT under a 10/1000 µs surge?
The SMCJ150HE3/9AT clamps to 243 V at its rated peak pulse current of 6.2 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88394) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ150HE3/9AT maintains this clamping performance across its operational temperature range when mounted per recommended pad layout.
Is the SMCJ150HE3/9AT suitable for automotive applications?
Yes, the SMCJ150HE3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its construction includes glass-passivated junction, JESD 201 Class 2 whisker resistance, and MSL Level 1 reflow compatibility - all confirmed in the Vishay datasheet. The SMCJ150HE3/9AT meets requirements for engine control units, body control modules, and ADAS power rails where transient immunity and long-term reliability are mandatory.
How does the HE3 suffix differ from E3 in the SMCJ150HE3/9AT part number?
The HE3 suffix denotes AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and automotive-grade screening - whereas E3 indicates commercial-grade RoHS compliance only. The SMCJ150HE3/9AT undergoes additional stress testing including temperature cycling, humidity bias, and mechanical shock per AEC standards. This distinction makes the SMCJ150HE3/9AT appropriate for safety-critical automotive systems where the base E3 variant would not be approved.
What is the thermal resistance of the SMCJ150HE3/9AT, and how does it affect layout design?
The SMCJ150HE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W. These values assume mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C under 6.5 W steady-state dissipation, PCB layout must provide adequate copper area and minimize trace length - underscoring why the SMCJ150HE3/9AT's thermal specs directly govern heatsinking strategy in high-power protection circuits.
Can the SMCJ150HE3/9AT be used in bi-directional configurations?
No, the SMCJ150HE3/9AT is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA"). Its cathode band marks polarity, and it conducts only in reverse breakdown - unlike bi-directional variants such as SMCJ150CA. Using the SMCJ150HE3/9AT in AC or bidirectional signal paths would result in forward conduction during half-cycles, causing failure. For symmetric protection, select the CA-suffixed version or pair unidirectional devices back-to-back.
SMCJ150HE3/9AT 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ150HE3/9AT FAQ
1.How can I place an order for SMCJ150HE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150HE3/9AT 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 SMCJ150HE3/9AT reliable?
The price and inventory of SMCJ150HE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150HE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ150HE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150HE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150HE3/9AT?
SMCJ150HE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150HE3/9AT 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 SMCJ150HE3/9AT?
For technical support, including SMCJ150HE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150HE3/9AT requirements.
6.How does Aetrix verify that SMCJ150HE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ150HE3/9AT 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 SMCJ150HE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ150HE3/9AT?
All SMCJ150HE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150HE3/9AT, 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 SMCJ150HE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ150HE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150HE3/9AT Tags
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