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Vishay General Semiconductor - Diodes Division SMCJ150CAHM3_A/I
- Part No.:
- SMCJ150CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150CAHM3_A/I.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,509
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Product details
Overview
SMCJ150CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power rating, 150 V standoff voltage (VWM), and clamping voltage of 243 V at 6.2 A peak pulse current. It protects sensitive ICs and MOSFETs against inductive switching transients and lightning-induced surges in automotive and industrial power rails.
For engineers reviewing the SMCJ150CAHM3_A/I datasheet, SMCJ150CAHM3_A/I pinout, SMCJ150CAHM3_A/I application, or SMCJ150CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) under standard PCB pad layout.
Technical Context
This device operates as a voltage-clamped shunt protector: during transient overvoltage events exceeding its breakdown voltage range (167–185 V), it rapidly switches to low-impedance conduction, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive stress.
Designed for unclamped inductive load switching and lightning surge environments, the SMCJ150CAHM3_A/I delivers consistent clamping performance across -55 °C to +150 °C operating junction temperature, with <0.1 %/°C temperature coefficient of VBR and meets MSL Level 1 per J-STD-020 at 260 °C peak reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 167 V / 185 V - guaranteed breakdown voltage range at 1 mA test current |
| VC @ IPPM | 243 V - clamping voltage at 6.2 A peak pulse current (10/1000 µs waveform) |
| PPPM | 1500 W - peak pulse power handling capacity under standardized surge waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads |
| TJ max | +150 °C - maximum allowable junction temperature for reliable operation |
| Package | SMC (DO-214AB) - surface-mount outline with 2.06 mm height and 7.75 mm length |
Pinout & Package
SMCJ150CAHM3_A/I uses a 2-terminal SMC (DO-214AB) package with no polarity marking-bidirectional configuration means both terminals are functionally symmetric. The device mounts directly across protected lines without cathode/anode orientation constraints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as input/output path for transient current; no fixed polarity |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing symmetrical clamping path; identical electrical role to Terminal 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or differential signal pairs without external polarity management |
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring zero-failure reliability under thermal cycling and vibration |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-020 standards for green manufacturing and end-of-life processing |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response time), improving system-level ESD immunity |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-related delamination or popcorn failure |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs and body control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed across main power input prior to DC-DC converter input stage. Use Value: Clamps 120 V load dump spikes to ≤243 V within nanoseconds, preventing damage to upstream regulators and microcontrollers. | Use Scenario: Safeguarding IGBT gate drivers and bus voltage sensors in variable-frequency drives exposed to motor coil flyback energy. IC Role / Device Role / Timing Role: Parallel-connected TVS on DC link between rectifier output and inverter stage. Use Value: Absorbs 1500 W surge energy from inductive kickback without degradation, maintaining bus voltage integrity during rapid deceleration. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Input |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from induced surges on outdoor cabling in base station backhaul links. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential-mode across data pair inputs, referenced to local ground. Use Value: Symmetric clamping prevents signal distortion during ±243 V common-mode transients, preserving data integrity up to 10 Mbps. | Use Scenario: Protecting photovoltaic string combiner box inputs from lightning-induced surges on rooftop solar arrays. IC Role / Device Role / Timing Role: Primary overvoltage clamp on PV+ and PV− terminals before MPPT controller input stage. Use Value: Withstands repeated 10/1000 µs surges up to 6.2 A while maintaining 150 V working voltage margin above nominal 1000 VDC array voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA-E3/57T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Not suitable for >5 A surge currents or high-temperature ambient (>85 °C) | Select when board space is constrained and surge energy is limited to <400 W |
| SMCJ150AHE3_A/I | Unidirectional version; same VWM, VBR, and PPPM but requires correct polarity placement | Requires explicit anode/cathode routing; unsuitable for AC or floating differential lines | Choose only where polarity is fixed and cost sensitivity outweighs design flexibility |
Compared with SMCJ150CAHM3_A/I, SMAJ150CA-E3/57T offers reduced surge capacity in a smaller package, while SMCJ150AHE3_A/I sacrifices bidirectionality for identical clamping performance-making SMCJ150CAHM3_A/I optimal for robust, polarity-agnostic protection in demanding automotive and industrial systems.
Availability
SMCJ150CAHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial motor drive DC bus safeguarding, and renewable energy inverter input surge suppression requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCJ150CAHM3_A/I 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, efficiency, and automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, engineered specifically for automotive load-dump immunity, industrial motor control surge resilience, and telecom infrastructure lightning robustness.
FAQ
What does the 'CA' suffix indicate in SMCJ150CAHM3_A/I?
The 'CA' suffix in SMCJ150CAHM3_A/I denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., SMCJ150A), this device provides symmetrical clamping in both polarities-enabling use across AC lines, differential signals, or floating power rails without polarity concerns. This is confirmed in Vishay's documentation stating "for bidirectional devices use CA suffix" and specifying identical electrical characteristics in both directions.
Is SMCJ150CAHM3_A/I qualified for automotive applications?
Yes, SMCJ150CAHM3_A/I is AEC-Q101 qualified, as indicated by the 'HM3' suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). Vishay explicitly states that HM3 ordering codes meet AEC-Q101 requirements, and the device is rated for operation from -55 °C to +150 °C junction temperature-meeting automotive under-hood and powertrain environmental demands.
What is the clamping voltage of SMCJ150CAHM3_A/I at its rated surge current?
The clamping voltage (VC) of SMCJ150CAHM3_A/I is 243 V at 6.2 A peak pulse current (IPPM), measured using the standard 10/1000 µs waveform. This value is specified in the Electrical Characteristics table for SMCJ150A under the 'MAXIMUM CLAMPING VOLTAGE AT IPPM' column and applies identically to the CA variant due to symmetrical bidirectional construction.
Does SMCJ150CAHM3_A/I require special PCB layout considerations?
Yes-optimal thermal and surge performance requires mounting SMCJ150CAHM3_A/I on minimum recommended copper pad areas: 0.31" × 0.31" (8.0 mm × 8.0 mm) per terminal. This layout achieves the published RθJA of 75 °C/W and supports full 1500 W pulse power dissipation. Smaller pads increase thermal resistance and reduce surge current handling capability.
How does the 'HM3' suffix differ from 'E3' or 'M3' in SMCJ150CAHM3_A/I?
The 'HM3' suffix in SMCJ150CAHM3_A/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. In contrast, 'E3' is RoHS-compliant commercial grade only, and 'M3' adds halogen-free compliance but lacks AEC-Q101 validation. Vishay's ordering information confirms HM3 parts carry the AEC-Q101 qualification noted in footnote (1) of the datasheet.
SMCJ150CAHM3_A/I 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ150CAHM3_A/I FAQ
1.How can I place an order for SMCJ150CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150CAHM3_A/I 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 SMCJ150CAHM3_A/I reliable?
The price and inventory of SMCJ150CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ150CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150CAHM3_A/I?
SMCJ150CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150CAHM3_A/I 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 SMCJ150CAHM3_A/I?
For technical support, including SMCJ150CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150CAHM3_A/I requirements.
6.How does Aetrix verify that SMCJ150CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ150CAHM3_A/I 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 SMCJ150CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ150CAHM3_A/I?
All SMCJ150CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150CAHM3_A/I, 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 SMCJ150CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMCJ150CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150CAHM3_A/I Tags
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