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Taiwan Semiconductor Corporation SMCJ150C
- Part No.:
- SMCJ150C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150C.pdf
- Description:
- 1500W, 185.5V, 10%, BIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:2,342
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Product details
Overview
SMCJ150C from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) in DO-214AB (SMC) package, with 150V working stand-off voltage (VWM), 167–204V breakdown voltage (VBR), and 266V maximum clamping voltage (VC) at 5.8A peak impulse current - designed for automotive load-dump and ISO 7637-2 Pulse 1/2a/2b/3a/3b protection in power supply rails.
For engineers reviewing the SMCJ150C datasheet, SMCJ150C pinout, SMCJ150C application, or SMCJ150C equivalent, this page delivers verified electrical parameters, thermal performance data, polarity marking guidance, clamping behavior under 10/1000μs surge, and direct alternatives for ESD and inductive switching transient suppression in industrial and automotive electronics.
Technical Context
The SMCJ150C is a bipolar (bidirectional) TVS diode configured as a single die in DO-214AB package, meeting ISO 7637-2 immunity requirements for automotive electronics. Its glass-passivated junction enables fast response (<1.0 ps from 0 V to VBR min) and low leakage (<1 μA at VWM), with clamping performance validated under standardized 10/1000μs waveform per Fig.5.
Thermal design is supported by RθJA = 55°C/W and RθJC = 10°C/W, enabling reliable operation up to TJ = +150°C. The device sustains 1500W non-repetitive peak pulse power at TA = 25°C and derates linearly above that ambient temperature per Fig.2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 167 V / 204 V @ IT = 1 mA - Confirmed breakdown threshold range for bidirectional conduction |
| VC @ IPPM | 266 V @ 5.8 A - Clamped voltage during 10/1000μs surge, limiting downstream voltage stress |
| PPK | 1500 W - Peak pulse power handling capability under standardized surge conditions |
| IR @ VWM | <1 μA - Reverse leakage ensures minimal standby power loss and signal integrity |
| TJ max | +150 °C - Maximum junction temperature rating supports under-hood automotive deployment |
| RθJA | 55 °C/W - Enables thermal estimation for PCB copper area and airflow requirements |
Pinout & Package
DO-214AB (SMC) surface-mount package with matte tin-plated leads; cathode band marking indicates polarity for unidirectional variants - absent on SMCJ150C due to bidirectional symmetry. Weight: 0.210 g. Meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge conduction path | No fixed anode/cathode; terminals interchangeable - clamps voltage transients in either polarity |
| Case (cathode band not present) | Package body (non-electrical) | Non-conductive molding compound; no thermal or electrical connection to die |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) - critical for automotive ECUs |
| Fast response time | <1.0 ps from 0 V to VBR min - ensures clamping activation before sensitive ICs experience overvoltage damage |
| Low moisture sensitivity | MSL Level 1 per J-STD-020 - allows unlimited floor life and standard reflow without baking |
| Halogen-free construction | Complies with IEC 61249-2-21 - meets environmental and safety requirements for RoHS-compliant assemblies |
| Automated placement compatibility | DO-214AB footprint and lead geometry optimized for pick-and-place machines - supports high-volume manufacturing |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed microcontroller power inputs against load-dump spikes up to 120 V in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed upstream of LDO regulators and MCU VDD pins. Use Value: Limits transient voltage to ≤266 V during ISO 7637-2 Pulse 5a, preventing latch-up or gate oxide rupture in downstream silicon. | Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Parallel-connected TVS across channel inputs to shunt energy before it reaches isolation amplifiers or optocouplers. Use Value: Withstands 5.8 A peak impulse current at 10/1000μs, suppressing >1 kV transients without degradation over 1000+ events. |
| LED Driver Surge Suppression | Telecom Line Interface Protection |
Use Scenario: Shielding constant-current LED driver ICs in streetlight systems from lightning-induced surges on AC mains or DC bus lines. IC Role / Device Role / Timing Role: Primary-level TVS mounted at DC input stage to absorb bulk surge energy before DC-DC conversion. Use Value: 1500 W peak power rating handles multi-kA induced surges; 150 V VWM avoids false triggering during normal 130 V DC bus operation. | Use Scenario: Protecting RS-485 transceivers and Ethernet PHY interfaces in outdoor base stations from EFT and surge coupling via long cable runs. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to ground, clamping common-mode transients. Use Value: Symmetrical bidirectional clamping ensures equal protection on both signal lines; <1 μA leakage preserves signal integrity at 100 Mbps data rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | 600 W PPK rating, same VWM/VBR/VC but lower surge capacity; DO-214AA (SMB) package | Lower power handling limits use to sub-100 V transients or lower-energy environments | Select when board space is constrained and peak surge energy is ≤600 W |
| 1.5KE150CA | Through-hole TO-218 package, 1500 W PPK, identical VWM/VBR/VC specs, higher thermal mass | Not suitable for automated SMT assembly; requires wave solder or hand-soldering | Select when legacy through-hole design or higher thermal inertia is required |
Compared with SMCJ150C, SMBJ150CA offers identical voltage ratings but reduced surge robustness and smaller footprint, while 1.5KE150CA provides equivalent clamping performance in a through-hole format - making SMCJ150C the optimal choice for high-reliability, high-volume SMT automotive and industrial applications requiring full ISO 7637-2 compliance.
Availability
SMCJ150C is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O hardening, LED driver surge suppression, and telecom line interface protection requiring stable component supply and full ISO 7637-2 qualification.
Supply support for SMCJ150C 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs - headquartered in Hsinchu, Taiwan.
The SMCJ series is part of TSC's high-power transient suppression product line, engineered specifically for automotive-grade surge immunity and industrial system reliability under harsh electromagnetic environments.
FAQ
What is the clamping voltage of SMCJ150C and how is it measured?
The SMCJ150C has a maximum clamping voltage (VC) of 266 V, measured at 5.8 A peak impulse current (IPPM) under the standardized 10/1000 μs double-exponential surge waveform per Fig.5 in the datasheet. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events, ensuring protection of 150 V-rated components. The test condition is strictly defined and repeatable across production lots.
Is SMCJ150C unidirectional or bidirectional, and how does that affect its marking and layout?
SMCJ150C is a bidirectional TVS diode, indicated by the "C" suffix per TSC's ordering convention. Unlike unidirectional variants (e.g., SMCJ150A), it has no cathode band marking and functions identically in both polarities. Layout requires no orientation consideration - either terminal may connect to the protected line or ground, simplifying PCB routing and eliminating polarity-related assembly errors.
Does SMCJ150C meet automotive standards, and which specific tests has it passed?
Yes, SMCJ150C meets ISO 7637-2 for automotive transient immunity, explicitly covering Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling). These validations are stated in the FEATURES section of the official TSC datasheet (Version S2104), confirming suitability for engine control modules, body control units, and other vehicle subsystems requiring certified surge resilience.
What is the thermal resistance profile of SMCJ150C, and how does it impact PCB design?
SMCJ150C has RθJA = 55°C/W and RθJC = 10°C/W. This means that with 1 W of steady-state dissipation, junction temperature rises ~55°C above ambient - though actual operation is pulsed. For reliable 1500 W surge handling, PCB copper area must be sufficient to manage short-term thermal mass; recommended pad layout per TSC's Package Outline Drawing (Page 7) uses minimum 10 mm² copper per terminal to sustain peak pulse energy without delamination.
How does SMCJ150C compare to SMCJ150A in terms of electrical performance and application use?
SMCJ150C is bidirectional with symmetrical clamping in both polarities, while SMCJ150A is unidirectional and requires correct cathode orientation. Their VWM (150 V), VBR (167–204 V), and VC (243 V for SMCJ150A vs. 266 V for SMCJ150C) differ slightly due to internal structure - SMCJ150C's higher VC reflects bidirectional conduction path losses. Use SMCJ150C where polarity-agnostic protection is needed, such as across AC-coupled lines or differential buses.
SMCJ150C 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 266V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ150C FAQ
1.How can I place an order for SMCJ150C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150C 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 SMCJ150C reliable?
The price and inventory of SMCJ150C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150C is usually 5 days.
3.What payment methods are accepted for SMCJ150C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150C?
SMCJ150C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150C 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 SMCJ150C?
For technical support, including SMCJ150C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150C requirements.
6.How does Aetrix verify that SMCJ150C is sourced from the original manufacturer or authorized distributors?
All SMCJ150C 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 SMCJ150C meets industry standards.
7.What is the process for return or replacement of SMCJ150C?
All SMCJ150C units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150C, 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 SMCJ150C part is unused and in its original packaging.
Return procedure for SMCJ150C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150C Tags
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