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Taiwan Semiconductor Corporation SMCJ90CA
- Part No.:
- SMCJ90CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90CA.pdf
- Description:
- TVS DIODE 90VWM 146VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,414
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Product details
Overview
SMCJ90CA 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), 100–111V breakdown voltage (VBR), and 146V maximum clamping voltage (VC) at 10.7A peak impulse current - designed for automotive load-dump and ISO 7637-2 Pulse 2b/3b protection.
For engineers reviewing the SMCJ90CA datasheet, SMCJ90CA pinout, SMCJ90CA application, or SMCJ90CA equivalent, this device delivers verified bidirectional clamping performance, sub-1ps response time, <1μA reverse leakage above 10V, and compliance with JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
Technical Context
The SMCJ90CA uses a glass-passivated silicon junction to achieve fast transient response (<1.0ps from 0V to VBR min) and stable clamping under repetitive surge conditions. Its bidirectional configuration enables symmetrical protection without polarity sensitivity, meeting ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive electronics.
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 200A non-repetitive forward surge (IFSM) and maintains <1μA IR at VWM = 90V per datasheet specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 100 V / 111 V @ IT = 1 mA - Confirmed breakdown range ensuring predictable turn-on threshold |
| VC @ IPPM | 146 V @ 10.7 A - Clamping voltage during 10/1000μs surge, limiting downstream voltage stress |
| PPK | 1500 W - Peak pulse power handling capability per 1ms waveform (Fig.5) |
| IR @ VWM | <1 μA - Minimal leakage at rated stand-off, preserving low-power circuit integrity |
| TJ max | +150 °C - Maximum junction temperature enabling under-hood automotive deployment |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 0.210g mass and matte tin-plated leads |
Pinout & Package
DO-214AB (SMC) package: surface-mount, bidirectional, cathode-band-free construction; terminals are unmarked anode/cathode pair - polarity irrelevant due to symmetrical internal structure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient return path | One side of bidirectional clamping junction; connects to protected line or ground reference |
| Cathode (Lead 2) | Transient return path | Other side of bidirectional clamping junction; symmetrically interchangeable with Lead 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or floating buses without polarity constraints |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive switch-off), Pulse 2b (load dump), and Pulse 3a/b (EFT) waveforms |
| Sub-1ps response time | Clamps transients before sensitive ICs experience overvoltage damage |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly processes |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs from load-dump surges during alternator regulation failure. IC Role / Device Role / Timing Role: Primary clamping element placed at main power input, absorbing >1500W pulses within microseconds. Use Value: Limits bus voltage to ≤146V during 24V system load dump (Pulse 2b), preventing MOSFET gate oxide rupture and MCU brownout. | Use Scenario: Safeguarding digital input modules against EFT bursts induced by relay switching in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS across signal and ground on isolated 24V DC inputs. Use Value: Clamps 4kV EFT (IEC 61000-4-4) transients to safe levels while maintaining <1μA leakage during normal operation. |
| LED Driver Power Stage | Telecom DC Power Feeds |
Use Scenario: Shielding constant-current LED driver ICs from inductive kickback when driving high-power solenoid loads. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to clamp flyback spikes. Use Value: Suppresses >100V transients generated by 200A IFSM-rated inductive switching, preserving driver FET reliability. | Use Scenario: Protecting PoE-powered equipment front-end rectifiers from lightning-induced surges on 48V DC distribution lines. IC Role / Device Role / Timing Role: Bidirectional clamping device placed after DC/DC isolation stage. Use Value: Handles 10/1000μs surges up to 1500W without degradation, supporting EN 61000-4-5 Level 3 immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA (Bourns) | Same DO-214AA package; lower PPK = 600W; VC = 146V @ 4.3A | Not suitable for ISO 7637-2 Pulse 2b; limited to lower-energy transients | Select only if system-level surge energy is confirmed ≤600W and layout space restricts DO-214AB use. |
| 1.5KE91CA (ON Semiconductor) | Through-hole DO-201 package; PPK = 1500W; VC = 150V @ 10A; slower thermal response | Requires PCB through-hole real estate; not compatible with automated SMT lines | Choose only for legacy through-hole designs where rework to SMT is impractical. |
Compared with SMBJ90CA and 1.5KE91CA, the SMCJ90CA uniquely combines 1500W surge rating, DO-214AB SMT compatibility, and ISO 7637-2 validation - making it the optimal choice for new automotive and industrial SMT designs requiring robust, automated-assemblable transient protection.
Availability
SMCJ90CA is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial PLC I/O modules, LED driver power stages, and telecom DC feed protection requiring stable component supply across multi-year production cycles.
Supply support for SMCJ90CA 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 Company (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and protection devices since 1979.
The SMCJ series was engineered specifically for high-energy transient suppression in automotive and industrial environments, emphasizing ISO 7637-2 compliance, SMT manufacturability, and long-term reliability under thermal cycling.
FAQ
What is the clamping voltage of SMCJ90CA at its rated peak pulse current?
The SMCJ90CA has a maximum clamping voltage (VC) of 146 V at 10.7 A peak impulse current (IPPM), measured under the standardized 10/1000μs double-exponential surge waveform per Fig.5 in the datasheet. This value ensures downstream components see no more than 146 V during worst-case transients, directly supporting design margin calculations for 24V automotive systems.
Is SMCJ90CA unidirectional or bidirectional, and how does that affect PCB layout?
The SMCJ90CA is a bidirectional TVS diode, indicated by the "CA" suffix, meaning it provides symmetrical clamping in both polarities without polarity marking or orientation dependency. Unlike unidirectional variants, no cathode band is present - simplifying PCB layout and eliminating risk of reverse installation during automated placement.
Does SMCJ90CA meet automotive qualification standards such as AEC-Q101?
The SMCJ90CA is not AEC-Q101 qualified per official Taiwan Semiconductor documentation; however, it meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements and operates reliably from −55°C to +150°C. For AEC-Q101–mandated applications, consult TSC's automotive-grade SMCJ-AEC variants or perform system-level qualification per customer requirements.
What is the maximum steady-state power dissipation (PD) for SMCJ90CA?
The SMCJ90CA has a steady-state power dissipation (PD) rating of 5 W at TA = 25°C, as specified in the Absolute Maximum Ratings table. This value applies only to continuous DC or low-frequency reverse-bias conditions - not transient events - and must be derated linearly above 25°C using the RθJA = 55°C/W thermal resistance.
Can SMCJ90CA replace SMCJ90A in an existing design?
No - SMCJ90CA and SMCJ90A are not interchangeable. SMCJ90A is unidirectional (cathode-banded, VF = 3.5 V @ 100 A), while SMCJ90CA is bidirectional (no band, symmetrical VBR). Substituting one for the other risks incorrect clamping behavior in AC-coupled or floating circuits and violates the device's specified electrical configuration.
SMCJ90CA 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMCJ90CA FAQ
1.How can I place an order for SMCJ90CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90CA 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 SMCJ90CA reliable?
The price and inventory of SMCJ90CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90CA is usually 5 days.
3.What payment methods are accepted for SMCJ90CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90CA?
SMCJ90CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90CA 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 SMCJ90CA?
For technical support, including SMCJ90CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90CA requirements.
6.How does Aetrix verify that SMCJ90CA is sourced from the original manufacturer or authorized distributors?
All SMCJ90CA 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 SMCJ90CA meets industry standards.
7.What is the process for return or replacement of SMCJ90CA?
All SMCJ90CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90CA, 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 SMCJ90CA part is unused and in its original packaging.
Return procedure for SMCJ90CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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