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Taiwan Semiconductor Corporation SMCJ150AH
- Part No.:
- SMCJ150AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150AH.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,606
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Product details
Overview
SMCJ150AH from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 150V working stand-off voltage (VWM), 167–185V breakdown voltage (VBR), and 243V maximum clamping voltage (VC) at 6.4A peak impulse current. It delivers AEC-Q101 qualification and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and ESD protection in power rails.
For engineers reviewing the SMCJ150AH datasheet, SMCJ150AH pinout, SMCJ150AH application, or SMCJ150AH equivalent, this page provides verified electrical parameters, thermal performance data, clamping behavior under 10/1000μs surge, polarity marking guidance, and direct alternatives validated for 150V rail protection in automotive ECUs and industrial power supplies.
Technical Context
The SMCJ150AH uses a glass-passivated silicon junction optimized for fast transient response (<1.0ps rise to VBR) and low leakage (<1μA at 150V). Its unidirectional configuration enables asymmetric clamping-forward conduction only during reverse overvoltage events-making it suitable for DC power line protection where polarity is fixed.
Thermally, it features RθJA = 55°C/W and RθJC = 10°C/W, enabling reliable operation up to TJ = 150°C. The device sustains 200A non-repetitive forward surge (IFSM) and dissipates 5W steady-state power, supporting robust placement in high-energy surge environments without derating below 70°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping initiates; sets safe margin above nominal 13.5–14.5V automotive battery systems. |
| VBR min/max | 167 V / 185 V @ IT = 1 mA - Confirmed breakdown range ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 243 V @ 6.4 A - Clamping voltage during 10/1000μs surge defines worst-case overvoltage seen by downstream ICs. |
| PPK | 1500 W - Peak pulse power rating per single 1ms transient; supports ISO 7637-2 Pulse 5a (load dump) compliance. |
| IR @ VWM | <1 μA - Ultra-low reverse leakage preserves system standby current budget in always-on vehicle modules. |
| TJ max | +150 °C - Junction temperature limit compatible with under-hood automotive environments and industrial enclosures. |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking on one end; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Polarity is unidirectional: cathode marked end connects to protected line, anode to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected Line Connection | Connects to +150V-rated supply rail; clamps transients toward ground when voltage exceeds VBR. |
| Anode (unmarked end) | Reference/Ground Node | Must be tied to low-impedance system ground plane to ensure effective clamping and thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Glass passivated junction | Ensures stable VBR over time and humidity exposure; eliminates risk of junction corrosion in harsh environments. |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (capacitive coupling) immunity requirements. |
| Fast response time | <1.0 ps from 0 V to VBR min - Enables protection of high-speed logic and microcontrollers against nanosecond-scale ESD events. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Power Input Stage |
|---|---|
Use Scenario: Protects 12V/24V supply inputs in BCMs from load-dump transients (up to 35V) and alternator ripple-induced spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed directly at connector entry point to clamp surges before they reach LDOs and CAN transceivers. Use Value: 243V clamping ensures downstream 33V-rated regulators remain within absolute maximum ratings during ISO 7637-2 Pulse 5a events. | Use Scenario: Shields 24V DC input of programmable logic controllers from switching noise and inductive kickback in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage suppression element upstream of bulk capacitance and DC-DC converters. Use Value: 1500W peak power rating handles repetitive 10/1000μs surges from contactor switching without degradation. |
| Telecom Remote Radio Unit (RRU) Power Feed | Medical Diagnostic Imaging Power Supply |
Use Scenario: Secures -48V DC power feed lines in outdoor 5G RRUs exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; SMCJ150AH used in unidirectional configuration on positive rail with separate grounding strategy. Use Value: Low IR (<1μA) prevents parasitic drain on backup batteries during extended idle periods between transmissions. | Use Scenario: Guards auxiliary 150V DC bias supply feeding X-ray detector sensor arrays against ESD during service access. IC Role / Device Role / Timing Role: Final-stage transient suppressor mounted adjacent to high-voltage connector interface. Use Value: DO-214AB footprint allows compact layout near HV connectors while maintaining creepage/clearance compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | Lower PPK (600W), same VWM/VBR range, SMB package (smaller footprint, higher RθJA = 75°C/W) | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy transients like ESD and capacitive coupling | Select SMBJ150A only when space constraints prohibit SMC and surge energy remains below 600W. |
| 1.5SMC150A | Identical PPK (1500W), same DO-214AB package, but not AEC-Q101 qualified; higher IR (≤5μA) | Lacks automotive qualification; acceptable for industrial/commercial use where AEC-Q101 is not mandated | Choose 1.5SMC150A for cost-sensitive industrial designs where automotive reliability testing is unnecessary. |
Compared with SMBJ150A and 1.5SMC150A, the SMCJ150AH uniquely combines AEC-Q101 qualification, 1500W surge capability, and sub-1μA leakage-making it the only option among the three qualified for under-hood automotive deployment with full ISO 7637-2 coverage.
Availability
SMCJ150AH is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC power inputs, telecom remote radio units, and medical imaging power supplies requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for SMCJ150AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and automotive-qualified components.
The SMCJ series was developed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust thermal performance in surface-mount packages.
FAQ
What is the clamping voltage of SMCJ150AH and how is it measured?
The SMCJ150AH has a maximum clamping voltage (VC) of 243 V at 6.4 A peak impulse current (IPPM), tested using a 10/1000 μs double-exponential surge waveform per IEC 61000-4-5 and ANSI/IEEE C62.35. This value represents the upper limit of voltage imposed on protected circuitry during standardized transient events and is guaranteed across temperature and production lot variations.
Is SMCJ150AH suitable for bidirectional transient protection?
No, SMCJ150AH is a unidirectional TVS diode intended for DC power line protection with defined polarity. For bidirectional applications, the SMCJ150CAH variant must be used-its marking code is GHN and it exhibits symmetrical clamping in both directions. Using SMCJ150AH in reverse-biased AC configurations risks permanent junction failure.
Does SMCJ150AH meet automotive qualification standards?
Yes, SMCJ150AH is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements. Its qualification includes temperature cycling, highly accelerated life testing (HALT), and surge endurance validation-confirming suitability for engine control units, infotainment systems, and other automotive electronic control modules.
What is the thermal resistance profile of SMCJ150AH and how does it affect PCB layout?
The SMCJ150AH has RθJA = 55°C/W and RθJC = 10°C/W. To maintain junction temperature ≤150°C under 1500W surge conditions, the PCB must provide ≥100 mm² of 2-oz copper pour connected to both terminals, with thermal vias under the cathode/anode pads. Insufficient copper area will cause thermal runaway during repetitive surges.
How does the leakage current of SMCJ150AH impact low-power system design?
The SMCJ150AH guarantees IR ≤1 μA at its 150V working stand-off voltage, making it suitable for always-on automotive modules such as telematics and alarm systems where total quiescent current must remain below 100 μA. This ultra-low leakage avoids measurable battery drain over multi-year vehicle service life and eliminates need for external leakage compensation circuits.
SMCJ150AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- 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)
SMCJ150AH FAQ
1.How can I place an order for SMCJ150AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150AH 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 SMCJ150AH reliable?
The price and inventory of SMCJ150AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150AH is usually 5 days.
3.What payment methods are accepted for SMCJ150AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150AH?
SMCJ150AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150AH 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 SMCJ150AH?
For technical support, including SMCJ150AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150AH requirements.
6.How does Aetrix verify that SMCJ150AH is sourced from the original manufacturer or authorized distributors?
All SMCJ150AH 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 SMCJ150AH meets industry standards.
7.What is the process for return or replacement of SMCJ150AH?
All SMCJ150AH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150AH, 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 SMCJ150AH part is unused and in its original packaging.
Return procedure for SMCJ150AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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