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Vishay General Semiconductor - Diodes Division SMCJ150CAHM3/I
- Part No.:
- SMCJ150CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150CAHM3/I.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,166
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Product details
Overview
SMCJ150CAHM3/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, MOSFETs, and sensor signal lines in automotive, industrial, and telecom systems against lightning-induced transients and inductive switching spikes.
For engineers reviewing the SMCJ150CAHM3/I datasheet, SMCJ150CAHM3/I pinout, SMCJ150CAHM3/I application, or SMCJ150CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) for reliable operation in harsh environments up to +150 °C junction temperature.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive 10/1000 µs transients.
Designed for surface-mount assembly on standard PCB copper pads (8.0 mm × 8.0 mm per terminal), it meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR min/max | 167 V / 185 V at 1 mA - Verified breakdown voltage window ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 243 V at 6.2 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream components. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial ambient conditions. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; informs heatsinking requirements for sustained power dissipation. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 2.06 mm height and 7.75 mm body length; compatible with automated placement. |
Pinout & Package
SMCJ150CAHM3/I uses a 2-terminal SMC (DO-214AB) package with no polarity marking-consistent with bidirectional functionality. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | One end of bidirectional avalanche junction | Acts as cathode during positive transient; forms symmetrical clamping path with opposite terminal. |
| Cathode | Other end of bidirectional avalanche junction | Acts as anode during negative transient; enables identical clamping in both voltage polarities. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN, RS-485), and ungrounded sensor interfaces without polarity constraints. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and infotainment power rails requiring zero defect reliability. |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental regulations and JEDEC JESD201 Class 2 whisker resistance for long-term solder joint integrity. |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (<1 ns response), preserving timing margins in high-speed digital interfaces. |
| MSL Level 1 | Allows unlimited floor life and standard reflow without baking, reducing manufacturing complexity and cost. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary clamping device placed at power entry point to limit voltage excursion to ≤243 V during ISO 7637-2 Pulse 5a events. Use Value: Prevents latch-up or permanent damage to microcontrollers and power management ICs by absorbing up to 1500 W surge energy. | Use Scenario: Shielding analog outputs of pressure/temperature sensors connected to PLC inputs via long cables. IC Role / Device Role / Timing Role: Bidirectional transient suppressor across signal and ground to shunt ESD and inductive kickback in both polarities. Use Value: Maintains signal fidelity by clamping transients below 243 V while adding <1 pF parasitic capacitance at 0 V bias. |
| Telecom Line Interface Protection | Consumer Device USB/DisplayPort Port Protection |
Use Scenario: Safeguarding Ethernet PHY transceivers and PoE injectors against lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Secondary-level protector downstream of gas discharge tubes, providing precise clamping at 243 V with fast response. Use Value: Enables compliance with IEC 61000-4-5 (10/1000 µs, 4 kV) while minimizing let-through energy to sensitive PHY circuitry. | Use Scenario: Adding surge immunity to external-facing USB-C or DisplayPort connectors in laptops and docking stations. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pairs (e.g., DP+/DP−, USB D+/D−) to suppress ±15 kV contact ESD per IEC 61000-4-2. Use Value: Survives repeated ESD strikes without degradation due to glass-passivated junction and low leakage (<1 µA at 150 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CAHE3/A | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W), same VWM and VC. | Suitable only for lower-energy transients; not recommended for automotive load dump or IEC 61000-4-5 Level 4. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 ESD or low-power signal lines. |
| SMCJ150AHE3/I | Unidirectional version; same VWM, VC, and PPPM but requires correct polarity orientation and cannot protect AC signals. | Applicable only where circuit topology enforces known DC polarity (e.g., single-rail power input with defined ground reference). | Choose only if system architecture guarantees unidirectional surge direction and polarity alignment can be assured during layout. |
Compared with SMCJ150CAHM3/I, SMAJ150CAHE3/A trades surge capacity and thermal performance for compactness, while SMCJ150AHE3/I sacrifices bidirectional flexibility for marginally lower cost-neither offers drop-in replacement capability due to differing polarity behavior or power rating.
Availability
SMCJ150CAHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with guaranteed AEC-Q101 qualification and halogen-free compliance.
Supply support for SMCJ150CAHM3/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 application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in demanding environments, targeting automotive, industrial, and communications systems where robustness against lightning, ESD, and inductive switching is mission-critical.
FAQ
What does the 'CA' suffix indicate in SMCJ150CAHM3/I?
The 'CA' suffix in SMCJ150CAHM3/I denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both positive and negative voltage polarities. This eliminates polarity concerns during PCB layout and enables protection of AC-coupled or differential signal paths-unlike unidirectional variants (e.g., SMCJ150A) which require strict cathode/anode orientation. The CA variant is electrically characterized in both directions per the Vishay datasheet.
Is SMCJ150CAHM3/I qualified for automotive applications?
Yes, SMCJ150CAHM3/I is AEC-Q101 qualified, as confirmed by the 'HM3' suffix and Vishay documentation. This qualification validates its reliability for automotive use cases including engine control modules, ADAS sensors, and infotainment systems exposed to temperature cycling, mechanical vibration, and high-energy transients like load dump. The device meets stringent test requirements for failure rate, lifetime, and parametric stability under stress.
What is the clamping voltage of SMCJ150CAHM3/I and why does it matter?
The clamping voltage (VC) of SMCJ150CAHM3/I is 243 V at 6.2 A peak pulse current (10/1000 µs waveform). This value represents the maximum voltage that will appear across protected circuitry during a surge event. It matters because downstream components-such as microcontrollers, transceivers, or power MOSFETs-must withstand this clamped voltage without damage or functional interruption; exceeding their absolute maximum ratings risks permanent failure.
How does the HM3 suffix differ from E3 or M3 in SMCJ150CAHM3/I?
The HM3 suffix in SMCJ150CAHM3/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification-distinct from E3 (RoHS-compliant commercial grade) and M3 (halogen-free RoHS-compliant commercial grade). Only HM3 and HE3 variants carry automotive qualification. The 'I' denotes 13-inch tape-and-reel packaging (3500 units), supporting high-volume SMT assembly without manual handling or reel changes.
Can SMCJ150CAHM3/I replace SMCJ150AHE3/I in an existing design?
No, SMCJ150CAHM3/I cannot directly replace SMCJ150AHE3/I without layout review. While both share identical VWM (150 V), PPPM (1500 W), and package (SMC), SMCJ150AHE3/I is unidirectional and requires correct polarity placement (cathode band aligned to system ground), whereas SMCJ150CAHM3/I is bidirectional with no polarity marking. Swapping them may result in improper clamping or no protection if the original design relies on directional conduction.
SMCJ150CAHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for SMCJ150CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150CAHM3/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/I reliable?
The price and inventory of SMCJ150CAHM3/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/I is usually 5 days.
3.What payment methods are accepted for SMCJ150CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150CAHM3/I?
SMCJ150CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150CAHM3/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/I?
For technical support, including SMCJ150CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150CAHM3/I requirements.
6.How does Aetrix verify that SMCJ150CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ150CAHM3/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/I meets industry standards.
7.What is the process for return or replacement of SMCJ150CAHM3/I?
All SMCJ150CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150CAHM3/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/I part is unused and in its original packaging.
Return procedure for SMCJ150CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150CAHM3/I Tags
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