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Vishay General Semiconductor - Diodes Division SMCJ150CAHE3_A/I
- Part No.:
- SMCJ150CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150CAHE3_A/I.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,387
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Product details
Overview
SMCJ150CAHE3_A/I from Vishay General Semiconductor is a bidirectional 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 and industrial power electronics.
For engineers reviewing the SMCJ150CAHE3_A/I datasheet, SMCJ150CAHE3_A/I pinout, SMCJ150CAHE3_A/I application, or SMCJ150CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge handling, low thermal resistance (RθJL = 15 °C/W), and compatibility with automated SMT assembly on standard PCB copper pads.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device during transients, leveraging an avalanche breakdown mechanism to shunt surge energy away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity concerns in AC-coupled or floating signal paths.
Designed for fast response (<1 ns), it exhibits low incremental surge resistance and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The glass-passivated junction and matte tin-plated leads ensure reliability under thermal cycling and humidity exposure in automotive-grade environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping initiates |
| VC @ IPPM | 243 V - clamping voltage at 6.2 A peak pulse current (10/1000 µs waveform) |
| PPPM | 1500 W - peak pulse power dissipation capability under standardized surge conditions |
| VBR min/max | 167 V / 185 V - breakdown voltage range at 1 mA test current, defining turn-on threshold |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJL | 15 °C/W - low junction-to-lead thermal resistance supporting efficient heat transfer to PCB copper |
| MSL Level | Level 1 - moisture sensitivity rating permitting unlimited floor life and standard reflow without baking |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path (bidirectional) | One terminal of symmetrical PN junction; conducts surge current in either direction when V > VBR |
| Cathode | Transient current return path (bidirectional) | Second terminal of symmetrical PN junction; functionally identical to Anode in CA-type devices |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| Low RθJL (15 °C/W) | Enables effective thermal coupling to PCB copper pads, reducing junction temperature rise during repeated surges |
| MSL Level 1 | Eliminates pre-reflow baking requirements and supports standard SMT production flow |
| Glass passivated junction | Provides stable leakage performance and long-term reliability under high-humidity and thermal stress |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in body control modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across input terminals to divert surge energy before reaching DC-DC converters or microcontrollers. Use Value: Maintains system uptime by preventing latch-up or permanent damage during 100 V/400 ms load dump events. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) of pressure/temperature sensors from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional clamping element connected between signal and ground to clamp ±2 kV HBM ESD and fast transients. Use Value: Preserves measurement accuracy by limiting voltage excursions to <243 V, avoiding ADC saturation or op-amp rail-to-rail clipping. |
| Telecom Line Interface Protection | OBD-II Diagnostic Port Protection |
Use Scenario: Safeguarding RS-485 transceivers on backhaul equipment exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary surge suppression device placed differential-mode across A/B bus lines and common-mode to ground. Use Value: Enables compliance with ITU-T K.20/21 immunity requirements by clamping induced surges within 1 ns. | Use Scenario: Hardening vehicle OBD-II connector pins (CAN-H/CAN-L, power, ground) against accidental 24 V battery misconnection and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS mounted directly at connector footprint to intercept surges before entering ECU CAN controller. Use Value: Prevents CAN transceiver failure during 120 V/50 ms jump-start events, ensuring diagnostic continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CAHE3_A/I | Lower PPPM (600 W), smaller SMB (DO-214AA) package, higher RθJA (100 °C/W) | Suitable only for lower-energy transients; limited thermal margin in high-ambient automotive locations | Select when board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE150CA | Through-hole TO-218 package, same VWM/VC but higher RθJA (30 °C/W), no AEC-Q101 qualification | Not suitable for automated SMT or automotive under-hood use; requires manual assembly and additional mounting hardware | Choose only for legacy through-hole designs or non-automotive industrial systems with lower reliability requirements |
Compared with SMBJ150CAHE3_A/I and 1.5KE150CA, the SMCJ150CAHE3_A/I delivers superior surge robustness (1500 W vs. 600 W/1500 W), automotive qualification, and optimized thermal performance for surface-mount deployment-making it the preferred choice for new automotive and high-reliability industrial designs.
Availability
SMCJ150CAHE3_A/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom line surge hardening, and OBD-II diagnostic port hardening requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ150CAHE3_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, precision, and automotive-grade qualification.
The SMCJ series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power transient suppression in harsh environments where AEC-Q101 compliance, low clamping voltage, and repeatable surge endurance are critical.
FAQ
What does the "CA" suffix indicate in SMCJ150CAHE3_A/I?
The "CA" suffix denotes a bidirectional configuration: the SMCJ150CAHE3_A/I contains two opposing avalanche diodes in a single SMC package, providing symmetrical clamping for both positive and negative transients. This eliminates polarity dependency and simplifies layout in AC-coupled or floating circuits, unlike unidirectional "A" variants which require correct cathode orientation.
Is SMCJ150CAHE3_A/I qualified for automotive applications?
Yes, SMCJ150CAHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" (RoHS-compliant and AEC-Q101 qualified). This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and surge endurance-making SMCJ150CAHE3_A/I suitable for under-hood ECUs, body electronics, and ADAS sensor modules.
What is the clamping voltage of SMCJ150CAHE3_A/I and how is it measured?
The clamping voltage of SMCJ150CAHE3_A/I is 243 V, measured at 6.2 A peak pulse current using the standardized 10/1000 µs double-exponential surge waveform. This value represents the maximum voltage imposed on protected circuitry during worst-case transient events and is guaranteed across the full operating temperature range (−55 °C to +150 °C).
How does the SMC (DO-214AB) package of SMCJ150CAHE3_A/I compare thermally to smaller packages?
The SMC (DO-214AB) package of SMCJ150CAHE3_A/I provides significantly better thermal performance than smaller alternatives: its RθJL of 15 °C/W enables efficient heat transfer to PCB copper pads, whereas SMB (DO-214AA) devices like SMBJ150CAHE3_A/I exhibit RθJL ≈ 25 °C/W. This allows SMCJ150CAHE3_A/I to sustain repeated 1500 W surges without exceeding TJ max = +150 °C when mounted on 8 mm × 8 mm copper pads.
Can SMCJ150CAHE3_A/I be used in place of unidirectional TVS diodes?
No-SMCJ150CAHE3_A/I is strictly bidirectional and lacks polarity marking; substituting it for a unidirectional device (e.g., SMCJ150AHE3_A/I) risks incorrect forward-bias conduction in DC circuits. Unidirectional types conduct only during reverse overvoltage, while SMCJ150CAHE3_A/I clamps in both directions. Use only where bidirectional protection is explicitly required, such as AC signal lines or floating power domains.
SMCJ150CAHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ150CAHE3_A/I FAQ
1.How can I place an order for SMCJ150CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150CAHE3_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 SMCJ150CAHE3_A/I reliable?
The price and inventory of SMCJ150CAHE3_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 SMCJ150CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ150CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150CAHE3_A/I?
SMCJ150CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150CAHE3_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 SMCJ150CAHE3_A/I?
For technical support, including SMCJ150CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150CAHE3_A/I requirements.
6.How does Aetrix verify that SMCJ150CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ150CAHE3_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 SMCJ150CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ150CAHE3_A/I?
All SMCJ150CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150CAHE3_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 SMCJ150CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ150CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150CAHE3_A/I Tags
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