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Taiwan Semiconductor Corporation SMCJ90CH
- Part No.:
- SMCJ90CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90CH.pdf
- Description:
- 1500W, 111V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,460
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Product details
Overview
SMCJ90CH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) in DO-214AB (SMC) package, designed for clamping ESD and lightning-induced transients in automotive and industrial power rails. It features a 90V working stand-off voltage (VWM), 100–122V breakdown voltage (VBR), 160V maximum clamping voltage (VC) at 9.8A peak impulse current, and AEC-Q101 qualification.
For engineers reviewing the SMCJ90CH datasheet, SMCJ90CH pinout, SMCJ90CH application, or SMCJ90CH equivalent, this device is selected for robust overvoltage protection in 24V/48V DC systems where fast response (<1.0ps), low leakage (<1µA @ 90V), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are critical.
Technical Context
The SMCJ90CH implements a glass-passivated silicon junction optimized for bidirectional transient suppression without polarity dependence. Its unidirectional counterpart (SMCJ90H) shares identical VWM, VBR, and VC specs but requires correct cathode orientation; the CH suffix denotes symmetrical bipolar operation with clamping in both directions.
Thermal performance is defined by RθJA = 55°C/W and RθJC = 10°C/W, supporting continuous operation up to TJ = 150°C. It meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity, enabling standard reflow assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 100 V / 122 V @ IT = 1 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM |
| VC @ IPPM | 160 V @ 9.8 A - Clamping voltage during 10/1000 µs surge defines worst-case rail overshoot |
| PPK | 1500 W - Peak pulse power rating per 1 ms waveform, derated linearly above 25°C ambient |
| IR @ VWM | <1 µA - Ultra-low leakage preserves system standby current in battery-powered applications |
| TJ max | +150 °C - Junction temperature limit enables deployment in under-hood or high-ambient industrial enclosures |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with no anode/cathode marking - terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Transient return path (bidirectional) | Connects to protected line; conducts during negative transients or positive surges depending on polarity |
| Cathode (Terminal 2) | Transient return path (bidirectional) | Functionally identical to Terminal 1; no polarity marking required for SMCJ90CH |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications per stress test requirements |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ignition noise) |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| Fast response time | <1.0 ps rise time ensures clamping activation before sensitive downstream ICs experience overstress |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally constrained designs |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24V CAN bus power lines and sensor supply rails against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed across input rail to clamp transients before they reach LDOs or microcontrollers. Use Value: 160V clamping limits rail excursion below 165V, preserving 18V-rated downstream regulators and meeting OEM pulse immunity thresholds. |
Use Scenario: Safeguarding analog input channels (4–20mA, 0–10V) in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp at terminal block entry, upstream of signal conditioning circuitry. Use Value: Sub-1µA leakage avoids loading precision current loops; 1500W rating absorbs multiple 1kV/500A surge events per IEC 61000-4-5. |
| Telecom DC Power Feeds | Renewable Energy Charge Controllers |
Use Scenario: Shielding -48V telecom rectifier outputs from lightning-induced common-mode surges on outdoor cable runs. IC Role / Device Role / Timing Role: Line-to-ground TVS on DC output stage, paired with MOVs for coordinated protection. Use Value: 90V VWM aligns with -48V nominal +20% tolerance; 160V VC prevents latch-up in PMBus-controlled DC-DC converters. |
Use Scenario: Protecting MPPT controller inputs connected to solar panel strings subject to induced lightning transients. IC Role / Device Role / Timing Role: Bidirectional clamp between PV+ and PV− terminals to suppress differential-mode surges. Use Value: Symmetrical clamping eliminates need for polarity-aware layout; 1500W rating handles 10/1000µs surges up to 6kV per IEC 61643-31. |
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; lower PPK (400W); VBR 100–122V; VC = 150V @ 5.8A | Lower surge capacity suits cost-sensitive consumer electronics, not automotive or industrial 1500W requirements | Select only if system-level surge energy is ≤400W and space constraints favor SMA over SMC |
| Vishay SMF90CA | DO-219AB (SOD-123FL) package; PPK = 200W; VBR = 100–122V; VC = 150V @ 1.3A | Designed for board-level ESD (IEC 61000-4-2), not ISO 7637-2 load dump or lightning | Use only for handheld device port protection; insufficient for 24V/48V rail clamping in harsh environments |
Compared with SMCJ90CH, SMAJ90CA offers smaller footprint but sacrifices 73% peak power handling, while SMF90CA targets ESD-only use cases and lacks automotive qualification-neither supports the 1500W, AEC-Q101, or ISO 7637-2 requirements of the SMCJ90CH.
Availability
SMCJ90CH is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom DC power feeds, and renewable energy charge controllers requiring stable component supply across extended temperature ranges and high-reliability certifications.
Supply support for SMCJ90CH 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, and rectifiers with global AEC-Q101 and industrial qualification capabilities.
The SMCJ series was developed specifically for high-energy transient suppression in automotive and industrial 12V–170V DC systems, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and surface-mount manufacturability.
FAQ
What does the 'CH' suffix indicate in SMCJ90CH?
The 'CH' suffix in SMCJ90CH designates a bidirectional configuration, meaning the device provides symmetrical transient clamping in both forward and reverse directions. Unlike the unidirectional SMCJ90H, the SMCJ90CH has no polarity marking and functions identically regardless of terminal orientation-critical for differential surge protection where polarity cannot be guaranteed. This makes the SMCJ90CH ideal for protecting AC-coupled lines or floating DC buses.
Is SMCJ90CH AEC-Q101 qualified, and what tests does that cover?
Yes, SMCJ90CH is AEC-Q101 qualified, confirming it passes stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (uHAST), and electrostatic discharge (HBM/MM). This qualification validates its suitability for automotive powertrain, body electronics, and ADAS modules where reliability under thermal, mechanical, and electrical stress is mandatory-directly supporting ISO 26262 functional safety readiness.
How does SMCJ90CH meet ISO 7637-2 Pulse 1 and Pulse 2b requirements?
SMCJ90CH meets ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2b (sudden load disconnection) by clamping transients to ≤160V at 9.8A with sub-1ps response. Its 1500W peak power rating exceeds the energy content of these pulses when applied across a 90V rail, and its low dynamic impedance ensures minimal voltage overshoot. Combined with glass passivation and thermal robustness, it sustains repeated pulse events without parameter drift.
What is the maximum clamping voltage (VC) of SMCJ90CH, and how is it measured?
The maximum clamping voltage (VC) of SMCJ90CH is 160V, measured at 9.8A peak impulse current (IPPM) using the standardized 10/1000 µs double-exponential surge waveform per Fig.5 in the datasheet. This value represents the worst-case voltage seen by downstream components during a full-power transient event and is guaranteed across temperature and lifetime-enabling accurate overvoltage margining in 24V and 48V system designs.
Can SMCJ90CH replace SMCJ90AH in an existing design?
No-SMCJ90CH and SMCJ90AH are not interchangeable. SMCJ90AH is unidirectional with cathode marking and 146V clamping, while SMCJ90CH is bidirectional with 160V clamping and no polarity. Swapping them risks incorrect orientation in unidirectional layouts or inadequate clamping in bidirectional configurations. Always verify schematic symbol, PCB footprint polarity markings, and system-level surge directionality before substitution.
SMCJ90CH 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:
- 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)
SMCJ90CH FAQ
1.How can I place an order for SMCJ90CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90CH 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 SMCJ90CH reliable?
The price and inventory of SMCJ90CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90CH is usually 5 days.
3.What payment methods are accepted for SMCJ90CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90CH?
SMCJ90CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90CH 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 SMCJ90CH?
For technical support, including SMCJ90CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90CH requirements.
6.How does Aetrix verify that SMCJ90CH is sourced from the original manufacturer or authorized distributors?
All SMCJ90CH 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 SMCJ90CH meets industry standards.
7.What is the process for return or replacement of SMCJ90CH?
All SMCJ90CH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90CH, 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 SMCJ90CH part is unused and in its original packaging.
Return procedure for SMCJ90CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90CH Tags
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