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Taiwan Semiconductor Corporation SMCJ90C
- Part No.:
- SMCJ90C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90C.pdf
- Description:
- 1500W, 111V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,656
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Product details
Overview
SMCJ90C from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) in DO-214AB (SMC) package, with 90V working stand-off voltage (VWM), 100–122V breakdown voltage (VBR), and 160V maximum clamping voltage (VC) at 9.8A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMCJ90C datasheet, SMCJ90C pinout, SMCJ90C application, or SMCJ90C equivalent, this page delivers verified electrical specs, clamping performance under 10/1000μs surge, bidirectional ESD/EFM immunity support, and direct replacement guidance for high-energy transient suppression in 24V/48V systems.
Technical Context
The SMCJ90C implements a glass-passivated silicon avalanche junction optimized for fast response (<1.0ps rise to VBR) and low leakage (<1μA @ 90V). Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating signal paths without polarity constraints.
Thermal design is supported by RθJA = 55°C/W and RθJC = 10°C/W, enabling sustained operation up to TJ = 150°C. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for reflow-compatible SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping initiates; sets system overvoltage trip threshold for 24V/48V bus protection. |
| VBR min/max | 100 / 122 V @ IT = 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal rail voltage with margin. |
| VC @ IPPM | 160 V @ 9.8 A (10/1000μs) - Clamped voltage during worst-case surge; limits downstream IC stress to safe levels per IEC 61000-4-5. |
| PPK | 1500 W - Peak pulse power handling capacity; supports single-event transients up to ISO 7637-2 Pulse 5a severity. |
| IR @ VWM | <1 μA - Negligible standby leakage; avoids battery drain in always-on automotive modules or remote sensors. |
| Package | DO-214AB (SMC) - Industry-standard surface-mount outline with 7.11 mm x 6.22 mm footprint and 2.3 mm height; compatible with automated pick-and-place. |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads; cathode band marking omitted for bidirectional configuration (SMCJ90C); polarity-neutral terminal assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminals | No polarity dependency - either terminal serves as input/output for transient energy diversion in AC or floating DC lines. |
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 (capacitive coupling) - enables drop-in use in automotive ECUs without additional filtering. |
| Fast response time | <1.0 ps from 0 V to VBR min - clamps before sensitive logic or analog circuitry experiences overvoltage stress during nanosecond-scale EFT events. |
| Moisture sensitivity level | MSL Level 1 (per J-STD-020) - no bake requirement prior to reflow; simplifies manufacturing flow and reduces process risk. |
| Halogen-free construction | Complies with IEC 61249-2-21 - meets RoHS and automotive OEM environmental mandates without compromising thermal or electrical performance. |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 24V supply line in body control module exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp protecting MCU power pins and CAN transceiver VCC rails. Use Value: Limits transient excursions to ≤160V during 100V/100ms load dump events, preventing latch-up or permanent damage to 3.3V/5V logic. |
Use Scenario: 24V digital input channel on programmable logic controller subjected to field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Front-end transient suppressor placed before optocoupler input stage. Use Value: Absorbs >1500W surges while maintaining <1μA leakage, ensuring stable biasing and noise immunity across 0–10 kHz switching frequencies. |
| LED Driver Surge Suppression | Telecom DC Power Feeds |
Use Scenario: Constant-current LED driver board powered from unregulated 48V telecom supply with lightning-induced surges. IC Role / Device Role / Timing Role: Bulk TVS across input capacitor to shunt surge energy before DC-DC converter stage. Use Value: Clamps 10/1000μs surges to 160V, preserving MOSFET gate oxide integrity and avoiding overvoltage shutdown of PWM controller. |
Use Scenario: -48V DC feed in base station remote radio unit exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Bidirectional clamp on power pair to protect PMIC and FPGA power domains. Use Value: Symmetric clamping ensures equal protection on both positive and negative rails without polarity-aware layout constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ90CA | Same DO-214AC (SMA) package; 100W lower PPK (1400W); VC = 156V @ 9.5A; VBR = 100–122V identical. | SMA package has smaller footprint (4.5 × 2.7 mm) but higher thermal resistance (RθJA = 70°C/W), limiting sustained surge duty cycle. | Select SMAJ90CA only when board space is constrained and surge repetition rate is low (e.g., infrequent ESD events). |
| ON Semiconductor 1.5SMC90CA | Identical DO-214AB (SMC) package; same PPK (1500W); VC = 160V @ 9.8A; VBR = 100–122V; IR = 1μA @ 90V. | Functionally identical clamping behavior and thermal specs; differs only in branding, test lot traceability, and minor packaging logistics (reel size). | 1.5SMC90CA is a direct functional alternative with identical electrical and mechanical specifications - suitable for second-source qualification without redesign. |
Compared with SMCJ90C, SMAJ90CA trades 100W peak power and higher thermal resistance for smaller size, while 1.5SMC90CA matches all key parameters and package dimensions - making it the preferred second source for continuity in high-reliability 24V/48V systems.
Availability
SMCJ90C is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, LED lighting drivers, and telecom DC power feeds requiring stable component supply across multi-year production cycles.
Supply support for SMCJ90C 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 for industrial and automotive markets.
The SMCJ series was developed specifically for high-energy transient suppression in harsh environments - emphasizing robust clamping consistency, low leakage, and AEC-Q200-ready reliability across extended temperature ranges.
FAQ
What is the clamping voltage of SMCJ90C under standard 10/1000μs surge conditions?
The SMCJ90C exhibits a maximum clamping voltage (VC) of 160 V when subjected to a 10/1000μs waveform at 9.8 A peak impulse current. This value is measured per IEC 61000-4-5 and confirmed in Taiwan Semiconductor's official datasheet revision S2104. The clamping performance ensures downstream components remain within safe operating voltage limits during real-world automotive and industrial transients.
Is SMCJ90C unidirectional or bidirectional, and how does that affect PCB layout?
SMCJ90C is a bidirectional TVS diode, indicated by the "C" suffix per Taiwan Semiconductor's ordering convention. It has no polarity marking and functions identically in both directions - eliminating orientation constraints during placement. This simplifies PCB layout for differential lines, AC-coupled interfaces, or floating power domains where voltage polarity may reverse during fault conditions.
Does SMCJ90C meet automotive transient immunity standards such as ISO 7637-2?
Yes, SMCJ90C is explicitly rated to meet ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) requirements. These capabilities are documented in the "Features" section of the S2104 datasheet and validated through standardized surge testing - confirming suitability for engine control units, ADAS modules, and other automotive electronics.
What is the maximum junction temperature rating for SMCJ90C, and how does it impact thermal design?
The SMCJ90C has a maximum junction temperature (TJ) rating of +150°C, with thermal resistance values of RθJA = 55°C/W and RθJC = 10°C/W. This allows operation in under-hood automotive environments and industrial enclosures without active cooling, provided PCB copper area and airflow meet minimum thermal relief guidelines outlined in the datasheet's "Thermal Performance" section.
How does the leakage current of SMCJ90C compare to similar 90V TVS diodes, and why does it matter?
SMCJ90C specifies maximum reverse leakage current (IR) of <1 μA at its 90V working stand-off voltage - matching industry-leading performance for this voltage class. Low leakage prevents battery drain in always-on automotive modules (e.g., telematics, alarm systems) and avoids signal distortion in high-impedance sensor interfaces, directly supporting long-term reliability in energy-sensitive designs.
SMCJ90C 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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 160V
- Current - Peak Pulse (10/1000µs):
- 9.8A
- 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)
SMCJ90C FAQ
1.How can I place an order for SMCJ90C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90C 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 SMCJ90C reliable?
The price and inventory of SMCJ90C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90C is usually 5 days.
3.What payment methods are accepted for SMCJ90C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90C?
SMCJ90C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90C 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 SMCJ90C?
For technical support, including SMCJ90C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90C requirements.
6.How does Aetrix verify that SMCJ90C is sourced from the original manufacturer or authorized distributors?
All SMCJ90C 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 SMCJ90C meets industry standards.
7.What is the process for return or replacement of SMCJ90C?
All SMCJ90C units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90C, 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 SMCJ90C part is unused and in its original packaging.
Return procedure for SMCJ90C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90C Tags
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