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Taiwan Semiconductor Corporation SMCJ150A
- Part No.:
- SMCJ150A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150A.pdf
- Description:
- TVS DIODE 150VWM 243VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,259
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Product details
Overview
SMCJ150A 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 protects automotive power electronics and industrial control inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMCJ150A datasheet, SMCJ150A pinout, SMCJ150A application, or SMCJ150A equivalent, this page delivers verified electrical parameters, thermal resistance values, clamping performance under 10/1000μs surge, polarity marking guidance, and direct alternatives for ESD and inductive switching protection design.
Technical Context
The SMCJ150A uses a glass-passivated silicon junction to achieve sub-1.0ps response time from 0 V to VBR(min), enabling effective suppression of fast-rising transients such as EFT and load dump spikes. Its unidirectional configuration provides forward conduction only during reverse overvoltage events, with VF = 5.0 V at 100 A IFSM.
Thermal performance is defined by RθJA = 55°C/W and RθJC = 10°C/W, supporting operation up to TJ = +150°C. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards, with matte tin-plated leads compliant to J-STD-002 solderability.
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 @ IT = 1 mA - Confirmed breakdown range ensuring reliable turn-on margin above VWM |
| VC @ IPPM | 243 V @ 6.4 A - Clamping voltage during 10/1000μs surge, limiting downstream voltage stress |
| PPK | 1500 W - Peak pulse power handling per single 1 ms transient, per Fig.5 waveform |
| IR @ VWM | <1 μA - Low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max | +150 °C - Junction temperature limit enabling use in under-hood automotive environments |
| RθJA | 55 °C/W - Thermal resistance defining PCB copper area requirements for thermal management |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode band marked on one end for polarity identification. Weight: 0.210 g. Molding compound rated UL 94V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path during clamping | Connected to protected circuit ground or low-side return; enables unidirectional surge shunting |
| Cathode | Reverse-biased terminal during normal operation | Connected to line/voltage rail being protected; clamps when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and humidity exposure, critical for automotive reliability |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (EFT) |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow, simplifying SMT assembly |
| Halogen-free construction | Meets IEC 61249-2-21, supporting RoHS-compliant and environmentally regulated designs |
| Fast response time <1.0 ps | Enables clamping before transient energy couples into sensitive IC inputs or microcontroller pins |
Applications
| Automotive Power Line Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach DC-DC converters or CAN transceivers. Use Value: Limits peak voltage to 243 V during 6.4 A 10/1000μs surge, preventing damage to 36 V-rated input stages. | Use Scenario: Digital input modules receiving 24 V DC signals from field sensors in factory automation. IC Role / Device Role / Timing Role: Standoff protector on each input channel to absorb inductive kickback from solenoid or relay coils. Use Value: Withstands repetitive 1500 W pulses without degradation, maintaining signal integrity across 10⁵+ switching cycles. |
| LED Driver Surge Suppression | Telecom Power Interface Protection |
Use Scenario: Constant-current LED drivers in street lighting subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary-level TVS on rectified DC bus to prevent overvoltage failure of MOSFET switches and current-sense amplifiers. Use Value: Clamps within 1 ps to hold bus voltage below 250 V, preserving 300 V-rated electrolytic capacitors and gate drivers. | Use Scenario: PoE-powered network equipment with 48 V DC input susceptible to ESD and EFT events. IC Role / Device Role / Timing Role: Secondary-side TVS on DC input rail to protect PMICs and Ethernet PHYs from conducted transients. Use Value: Delivers <1 μA leakage at 150 V, avoiding false triggering or bias current errors in precision 48 V monitoring circuits. |
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 (600 W), same VWM/VBR/VC specs, SMB package (smaller footprint, higher RθJA) | Not suitable for 1500 W ISO 7637-2 Pulse 1; limited to lower-energy EFT or ESD | Select SMCJ150A where full automotive load dump immunity is required; SMBJ150A fits space-constrained boards with lower surge risk. |
| 1.5SMC150A | Identical electrical specs and DO-214AB package; manufactured by ON Semiconductor, same marking code structure | No functional difference; qualified for identical automotive and industrial standards | Drop-in alternative with identical thermal and clamping behavior; verify sourcing continuity and AEC-Q101 qualification status per batch. |
Compared with SMBJ150A, SMCJ150A delivers 2.5× higher peak power handling for robust load dump protection, while 1.5SMC150A offers identical performance with alternate supply chain assurance-both require no PCB layout change but differ in qualification documentation and long-term availability planning.
Availability
SMCJ150A is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, LED driver modules, and telecom power interfaces requiring stable component supply across multi-year production cycles.
Supply support for SMCJ150A 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, and power MOSFETs since 1979.
The SMCJ series was designed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing ISO 7637-2 compliance, low leakage, and extended temperature operation up to +150°C.
FAQ
What is the clamping voltage of SMCJ150A at its rated peak pulse current?
The SMCJ150A has a maximum clamping voltage (VC) of 243 V at 6.4 A peak impulse current (IPPM), measured under the standard 10/1000 μs double-exponential surge waveform. This value ensures downstream components see voltage limited to ≤243 V during worst-case transients, directly supporting design margin calculations for 300 V-rated capacitors and 200 V MOSFETs in the same power stage.
Is SMCJ150A unidirectional or bidirectional, and how is polarity identified?
SMCJ150A is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. Polarity is marked by a cathode band on the DO-214AB package body-this band must be connected toward the voltage rail being protected, while the anode connects to system ground. Bidirectional variants (e.g., SMCJ150CA) exist but are electrically distinct and not interchangeable with SMCJ150A.
Does SMCJ150A meet automotive transient immunity standards?
Yes, SMCJ150A meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (electrical fast transients) requirements. Its 1500 W peak power rating, sub-1.0 ps response time, and validated clamping behavior under standardized waveforms make it suitable for front-end protection in automotive body control modules, infotainment power supplies, and ADAS sensor interfaces.
What is the maximum steady-state power dissipation (PD) for SMCJ150A?
The SMCJ150A has a steady-state power dissipation (PD) rating of 5 W at TA = 25°C. This value applies only to continuous DC or low-frequency reverse leakage conditions-not surge events-and must be derated linearly above 25°C using the RθJA = 55°C/W thermal resistance. At 85°C ambient, PD drops to approximately 2.3 W, limiting use in non-pulsed overvoltage scenarios.
How does SMCJ150A compare to SMCJ150 in terms of breakdown voltage and clamping performance?
SMCJ150A has tighter VBR tolerance (167–185 V) versus SMCJ150 (167–204 V), resulting in more consistent turn-on behavior and lower VC (243 V vs. 266 V at same IPPM). This improved consistency reduces design margin uncertainty and enhances protection predictability in safety-critical applications like automotive power distribution units where precise clamping thresholds are mandated.
SMCJ150A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- 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):
- 6.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ150A FAQ
1.How can I place an order for SMCJ150A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150A 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 SMCJ150A reliable?
The price and inventory of SMCJ150A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150A is usually 5 days.
3.What payment methods are accepted for SMCJ150A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150A?
SMCJ150A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150A 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 SMCJ150A?
For technical support, including SMCJ150A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150A requirements.
6.How does Aetrix verify that SMCJ150A is sourced from the original manufacturer or authorized distributors?
All SMCJ150A 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 SMCJ150A meets industry standards.
7.What is the process for return or replacement of SMCJ150A?
All SMCJ150A units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150A, 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 SMCJ150A part is unused and in its original packaging.
Return procedure for SMCJ150A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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