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Taiwan Semiconductor Corporation SMCJ100CA
- Part No.:
- SMCJ100CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ100CA.pdf
- Description:
- TVS DIODE 100VWM 162VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,211
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Product details
Overview
SMCJ100CA from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 100V working stand-off voltage (VWM), 111–123V breakdown voltage (VBR), and 162V maximum clamping voltage (VC) at 9.7A 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 SMCJ100CA datasheet, SMCJ100CA pinout, SMCJ100CA application, or SMCJ100CA equivalent, this device is selected for high-energy ESD and load-dump protection where fast response (<1.0 ps), low leakage (<1 µA @ 100V), and bidirectional clamping are required in compact SMC packages.
Technical Context
The SMCJ100CA uses a glass-passivated silicon junction to achieve stable, repeatable clamping performance under repetitive surge conditions. Its bidirectional configuration enables symmetrical suppression of both positive and negative transients without polarity dependency.
Designed for compliance with ISO 7637-2, it sustains 1500W peak pulse power (10/1000 µs waveform) and operates across –55°C to +150°C junction temperature range, with thermal resistance RθJA = 55°C/W and RθJC = 10°C/W for effective PCB-level thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 111 V / 123 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 162 V - Clamped voltage seen by protected circuit during 9.7 A 10/1000 µs surge |
| PPK | 1500 W - Peak pulse power handling per single 10/1000 µs transient, critical for load-dump immunity |
| IR @ VWM | <1 µA - Negligible leakage at rated stand-off, preserving low-power system integrity |
| Junction Temp | –55°C to +150°C - Enables deployment in under-hood automotive and industrial environments |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded epoxy case meeting UL 94V-0, matte tin-plated leads, polarity indicated by cathode band (bidirectional operation renders band non-functional but retained for marking consistency).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked end) | Transient return path (bidirectional) | Provides symmetrical conduction for ± surges; no functional polarity distinction in CA variant |
| Cathode (banded end) | Transient return path (bidirectional) | Same electrical role as anode; band is legacy marking only, not directional indicator |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability and low parameter drift under thermal cycling and humidity stress |
| ISO 7637-2 compliance | Validated for automotive electrical system immunity testing including Pulse 1 (inductive switch-off), Pulse 2b (battery disconnect), and Pulse 3a/b (capacitive coupling) |
| Fast response time | <1.0 ps rise time from 0 V to VBR ensures clamping initiates before transient energy couples into downstream ICs |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly processes without floor-life constraints |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator switching transients. IC Role / Device Role / Timing Role: Primary clamping element placed at power entry point to limit rail voltage excursion to ≤162 V. Use Value: Prevents overvoltage damage to MCU, CAN transceivers, and power management ICs during high-energy events up to 1500 W. | Use Scenario: Digital input modules receiving 24 V DC signals from field sensors in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional TVS shunting EFT bursts (IEC 61000-4-4) and ESD (IEC 61000-4-2) on signal lines. Use Value: Maintains signal integrity while limiting transient-induced latch-up or gate oxide rupture in input buffer ICs. |
| 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: Secondary protection stage after MOV, clamping residual high-voltage spikes before DC-DC converter input. Use Value: Extends driver lifetime by limiting peak voltage to 162 V, well below typical 200 V input capacitor rating. | Use Scenario: PoE-powered network switches with 48 V DC input susceptible to induced surges on building wiring. IC Role / Device Role / Timing Role: Bidirectional clamping on primary-side DC bus to protect DC-DC controllers and FETs. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W without degradation, ensuring multi-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA | Lower PPK (600 W), same VWM/VBR/VC specs, SMB package (smaller footprint, higher thermal resistance) | Not suitable for ISO 7637-2 Pulse 5a (load dump); limited to lower-energy transients | Select when board space is constrained and surge energy is ≤600 W |
| 1.5KE100CA | Through-hole DO-201 package, identical electrical specs, higher mounting robustness but no SMT compatibility | Requires wave soldering or hand-soldering; unsuitable for automated high-volume production | Select for prototyping, repair, or legacy through-hole designs where reflow is unavailable |
Compared with SMBJ100CA and 1.5KE100CA, the SMCJ100CA uniquely balances 1500 W surge capability, SMT manufacturability, and bidirectional symmetry-making it optimal for automotive and industrial power rail protection where both energy rating and assembly scalability matter.
Availability
SMCJ100CA is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and LED lighting applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCJ100CA 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, serving global automotive, industrial, and consumer markets since 1979.
The SMCJ series is part of TSC's Transient Voltage Suppressor portfolio, engineered specifically for high-reliability surge immunity in harsh environments-including under-hood automotive, factory automation, and outdoor lighting systems.
FAQ
What does the "CA" suffix indicate in SMCJ100CA?
The "CA" suffix in SMCJ100CA denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive- and negative-polarity voltage spikes. Unlike unidirectional variants (e.g., SMCJ100A), the SMCJ100CA has no functional anode/cathode distinction-its terminals are electrically interchangeable. This makes SMCJ100CA ideal for AC-coupled lines or DC rails where polarity reversal or differential transients may occur. The marking band remains for consistency but does not define directionality in the SMCJ100CA.
How does SMCJ100CA differ from SMCJ100A in practical circuit design?
The SMCJ100A is unidirectional and must be oriented with its cathode band toward the positive rail to clamp positive transients; it conducts forward during negative excursions and offers no protection there. In contrast, the SMCJ100CA clamps equally in both directions without orientation dependency. For a 24 V DC system subject to both load dump (+) and battery reversal (–), SMCJ100CA eliminates layout errors and provides guaranteed dual-polarity protection-whereas SMCJ100A would require additional components or careful placement. This makes SMCJ100CA the preferred choice for robust, polarity-agnostic designs.
What is the maximum peak impulse current (IPPM) rating for SMCJ100CA, and how is it measured?
The SMCJ100CA has a maximum peak impulse current (IPPM) of 9.7 A, measured under the standardized 10/1000 µs double-exponential surge waveform defined in IEC 61000-4-5 and ANSI/IEEE C62.35. This value corresponds directly to its 1500 W peak pulse power rating (PPK = VC × IPPM = 162 V × 9.7 A). The test applies a single non-repetitive pulse at TA = 25°C; derating is required above ambient temperature per Fig.2 in the datasheet. Engineers must verify PCB trace width and thermal relief can sustain this current without fusing during worst-case surge events.
Is SMCJ100CA compliant with automotive qualification standards such as AEC-Q101?
The SMCJ100CA is not explicitly qualified to AEC-Q101 in the provided documentation. However, it meets ISO 7637-2 (Pulse 1/2a/2b/3a/3b), which is a core automotive immunity standard, and operates across –55°C to +150°C junction temperature-exceeding AEC-Q101's required temperature range. While many Tier 1 suppliers use SMCJ100CA in automotive applications due to its robust construction and proven field performance, formal AEC-Q101 certification requires additional stress testing (e.g., HTGB, HTRB, ESD). Customers requiring certified parts should consult Taiwan Semiconductor for latest qualification status or consider AEC-Q101–qualified equivalents.
Can SMCJ100CA be used in parallel to increase surge current handling?
No-SMCJ100CA should not be paralleled to increase surge current capacity. Due to manufacturing tolerances in VBR (111–123 V), even matched units will exhibit unequal current sharing during a transient, causing one device to absorb most of the energy and likely fail prematurely. This imbalance invalidates the expected 2× IPPM gain. For higher energy requirements, select a single higher-rated device (e.g., SMCJ150CA for 266 V clamping) or implement staged protection (e.g., upstream MOV + downstream SMCJ100CA). Layout symmetry and thermal coupling do not overcome inherent VBR mismatch in TVS diodes.
SMCJ100CA 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):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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)
SMCJ100CA FAQ
1.How can I place an order for SMCJ100CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ100CA 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 SMCJ100CA reliable?
The price and inventory of SMCJ100CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ100CA is usually 5 days.
3.What payment methods are accepted for SMCJ100CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ100CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ100CA?
SMCJ100CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ100CA 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 SMCJ100CA?
For technical support, including SMCJ100CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ100CA requirements.
6.How does Aetrix verify that SMCJ100CA is sourced from the original manufacturer or authorized distributors?
All SMCJ100CA 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 SMCJ100CA meets industry standards.
7.What is the process for return or replacement of SMCJ100CA?
All SMCJ100CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ100CA, 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 SMCJ100CA part is unused and in its original packaging.
Return procedure for SMCJ100CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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