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Vishay General Semiconductor - Diodes Division SMCJ150CAHE3/9AT
- Part No.:
- SMCJ150CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150CAHE3/9AT.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,890
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Product details
Overview
SMCJ150CAHE3/9AT 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 signal lines and power rails in automotive sensor interfaces and industrial control I/O.
For engineers reviewing the SMCJ150CAHE3/9AT datasheet, SMCJ150CAHE3/9AT pinout, SMCJ150CAHE3/9AT application, or SMCJ150CAHE3/9AT equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 1500 W surge capability, thermal resistance (RθJA = 75 °C/W), and RoHS-compliant matte tin terminations suitable for automated SMT assembly.
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 constraints. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive transients.
The device meets J-STD-020 MSL Level 1 (peak reflow 260 °C), supports 8.3 ms half-sine surge current up to 200 A (unidirectional only), and exhibits a temperature coefficient of VBR at +0.108 %/°C - critical for thermal stability in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 167 V / 185 V at 1 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | 243 V at 6.2 A (10/1000 μs) - clamped voltage limiting stress on downstream ICs |
| PPPM | 1500 W - peak transient energy absorption capacity per IEEE C62.35 waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, informs heatsinking requirements |
| TJ max | +150 °C - maximum junction temperature enabling operation in engine bay environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
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 entry (reverse bias) | One terminal of symmetrical PN junction; conducts during positive or negative overvoltage events |
| Cathode | Transient current entry (forward bias) | Second terminal of symmetrical PN junction; identical electrical role to Anode in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC, differential, or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated for automotive electronics including powertrain and ADAS sensor interfaces |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2/5a surges and IEC 61000-4-5 line transients in industrial systems |
| MSL Level 1 rating | Supports lead-free reflow without moisture-induced failure; no baking required pre-assembly |
| Glass passivated junction | Ensures long-term parameter stability and low leakage (<1 μA at VWM) across temperature and life cycle |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and inductive switching transients in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential bus lines to clamp ±200 V transients within 1 ns. Use Value: Prevents latch-up or permanent damage to transceivers rated for ≤±40 V common-mode range while maintaining signal integrity. | Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS shunting surge energy before it reaches optocoupler input stages. Use Value: Enables >100,000 actuation cycles without degradation, meeting IEC 61000-4-4 Level 4 immunity requirements. |
| Telecom Line Interface | Power Supply Rail Clamp |
Use Scenario: Shielding RS-485 transceivers in base station remote radio units from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary surge suppression element placed at connector interface, upstream of series impedance. Use Value: Limits induced voltage to <243 V, keeping transceiver stress below absolute maximum ratings during 10/1000 μs surges. | Use Scenario: Clamping 12 V and 24 V DC power rails against ISO 16750-2 jump-start and alternator load dump events. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing >1500 W transient energy to prevent regulator overvoltage shutdown. Use Value: Maintains system uptime by preventing brownout or reset during 120 V/400 ms load dump pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CAHE3/52T | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 110 °C/W) | Suitable for space-constrained consumer electronics but insufficient for automotive load dump | Select when board area is critical and surge energy is ≤600 W |
| SMCJ150AHE3/9AT | Unidirectional version; same VWM, VC, and PPPM but asymmetric clamping (cathode-marked) | Required where DC-biased rails need forward conduction path (e.g., 12 V supply to microcontroller) | Choose for unidirectional DC power rail protection with cathode-to-ground configuration |
Compared with SMCJ150CAHE3/9AT, SMBJ150CAHE3/52T trades surge robustness for compactness, while SMCJ150AHE3/9AT provides directional clamping essential for DC supply rails - neither is pin-compatible, but both share identical SMC footprint and thermal mounting requirements.
Availability
SMCJ150CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O, telecom line protection, and DC power rail clamping requiring stable component supply across extended temperature ranges and high-reliability production programs.
Supply support for SMCJ150CAHE3/9AT 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-qualified components.
The SMCJ series targets high-energy transient suppression in harsh environments, specifically engineered for AEC-Q101 compliance and robust surge handling in automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of SMCJ150CAHE3/9AT at its rated peak pulse current?
The SMCJ150CAHE3/9AT clamps to 243 V at its specified peak pulse current of 6.2 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the maximum voltage imposed on protected circuitry during surge events. The clamping performance remains consistent across both polarities due to its bidirectional architecture, and the SMCJ150CAHE3/9AT maintains this specification over its full operating temperature range of -55 °C to +150 °C.
Is SMCJ150CAHE3/9AT qualified for automotive applications?
Yes, SMCJ150CAHE3/9AT is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number. This qualification covers stress tests including temperature cycling, highly accelerated life testing (HALT), and surge endurance under automotive environmental conditions. The SMCJ150CAHE3/9AT is explicitly intended for use in automotive subsystems such as body electronics, infotainment interfaces, and ADAS sensor signal conditioning where reliability under thermal and electrical stress is mandatory.
What does the "CA" suffix mean in SMCJ150CAHE3/9AT?
The "CA" suffix in SMCJ150CAHE3/9AT denotes a bidirectional transient voltage suppressor configuration. Unlike unidirectional variants (e.g., SMCJ150A), the SMCJ150CAHE3/9AT features symmetrical breakdown characteristics in both forward and reverse directions, making it suitable for protecting AC-coupled lines, differential buses like CAN or RS-485, or any floating node where polarity cannot be assumed. No cathode band marking is present on the SMCJ150CAHE3/9AT package.
What is the thermal resistance of SMCJ150CAHE3/9AT and how does it affect layout?
The SMCJ150CAHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value directly impacts PCB layout: adequate copper pour area must be provided to maintain junction temperature below 150 °C during repeated surge events. Reducing pad size increases RθJA, risking thermal runaway under sustained transient loads. The SMCJ150CAHE3/9AT's low RθJL (15 °C/W) further emphasizes the importance of solid thermal connection to internal ground planes.
How does SMCJ150CAHE3/9AT differ from standard Zener diodes used for voltage regulation?
The SMCJ150CAHE3/9AT is not a voltage regulator but a transient suppressor optimized for high-energy, short-duration surges - it conducts heavily only above its 167–185 V breakdown range and returns to <1 μA leakage at 150 V. In contrast, Zener diodes regulate continuously at their nominal voltage with much lower power dissipation capability. The SMCJ150CAHE3/9AT's 1500 W PPPM, glass-passivated junction, and AEC-Q101 qualification make it unsuitable for steady-state regulation but ideal for protecting against ISO 7637-2 or IEC 61000-4-5 threats that would destroy a Zener diode.
SMCJ150CAHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ150CAHE3/9AT FAQ
1.How can I place an order for SMCJ150CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150CAHE3/9AT 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 SMCJ150CAHE3/9AT reliable?
The price and inventory of SMCJ150CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ150CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150CAHE3/9AT?
SMCJ150CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150CAHE3/9AT 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 SMCJ150CAHE3/9AT?
For technical support, including SMCJ150CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150CAHE3/9AT requirements.
6.How does Aetrix verify that SMCJ150CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ150CAHE3/9AT 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 SMCJ150CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ150CAHE3/9AT?
All SMCJ150CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150CAHE3/9AT, 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 SMCJ150CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ150CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150CAHE3/9AT Tags
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