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Taiwan Semiconductor Corporation 1.5SMC82CA
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- Part No.:
- 1.5SMC82CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82CA.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,783
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Product details
Overview
1.5SMC82CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for high-energy surge protection in DC power lines and signal interfaces. It features a 77.9 V minimum / 86.1 V maximum breakdown voltage (VBR), 70.1 V working stand-off voltage (VWM), 13.9 A peak impulse current (IPPM), 113 V maximum clamping voltage (VC), and 1500 W peak pulse power rating at 1 ms - deployed in automotive infotainment power rails and industrial I/O modules.
For engineers reviewing the 1.5SMC82CA datasheet, 1.5SMC82CA pinout, 1.5SMC82CA application, or 1.5SMC82CA equivalent, this page delivers verified electrical parameters, bidirectional TVS behavior, thermal resistance data (RθJC = 15 °C/W), ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and real-world ESD/transient immunity use cases - all specific to the 1.5SMC82CA variant.
Technical Context
The 1.5SMC82CA operates as a symmetric, bidirectional avalanche diode with glass-passivated junction, enabling identical clamping performance in both polarities. Its fast response time (<1.0 ps) and low leakage (<1 µA at 70.1 V) ensure minimal interference during normal operation while delivering robust protection against ESD (IEC 61000-4-2), lightning-induced surges (IEC 61000-4-5), and load-dump transients.
Thermally, it supports continuous operation up to +150 °C junction temperature, with RθJA = 50 °C/W and RθJC = 15 °C/W, allowing effective heat dissipation in compact SMC-mounted PCB layouts. The device meets J-STD-020 moisture sensitivity level 1 and JESD 201 class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V - defines the voltage range at which avalanche conduction begins under 1 mA test current; ensures reliable triggering before downstream IC damage. |
| VWM | 70.1 V - maximum continuous reverse operating voltage; sets safe DC bias margin below breakdown for stable system operation. |
| VC @ IPPM | 113 V - clamped voltage at 13.9 A peak impulse; determines worst-case overvoltage seen by protected circuitry during surge events. |
| PPK | 1500 W - peak pulse power handling capability per 1 ms waveform; enables survival of high-energy transients like ISO 7637-2 Pulse 5a. |
| IPPM | 13.9 A - maximum non-repetitive surge current; quantifies surge energy absorption capacity per IEEE C62.35 standard. |
| RθJC | 15 °C/W - junction-to-case thermal resistance; confirms efficient heat transfer to PCB copper when mounted with adequate thermal pad area. |
| TJ max | +150 °C - maximum allowable junction temperature; supports operation in under-hood automotive and industrial ambient environments. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetric terminals). Matte tin-plated leads, RoHS and halogen-free compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No polarity marking required; identical clamping behavior in either direction - simplifies layout and eliminates orientation errors during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures long-term reliability and stable VBR drift (<0.105 %/°C) across temperature and lifetime, critical for automotive-grade designs. |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validates immunity to real-world vehicle electrical disturbances - including battery disconnect, alternator load dump, and inductive switching noise. |
| Moisture sensitivity level 1 (J-STD-020) | Enables direct placement without baking or dry-pack handling - reduces manufacturing cost and avoids moisture-related popcorning during reflow. |
| Fast response time <1.0 ps | Clamps transients before sensitive logic or analog circuits experience damaging overvoltage - essential for protecting USB, CAN, and RS-485 interfaces. |
| 1500 W peak pulse power (1 ms) | Provides headroom for multi-event surge testing and extended transient durations beyond standard 8/20 µs waveforms. |
Applications
| Automotive Infotainment Power Rail | Industrial RS-485 Communication Port |
|---|---|
Use Scenario: Protecting 12 V supply input to head unit MCU and audio codec from load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed upstream of DC-DC converter input to limit voltage excursions to ≤113 V during ISO 7637-2 Pulse 5a events. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V LDOs and microcontrollers by limiting peak rail voltage within safe SOA limits. |
Use Scenario: Safeguarding differential RS-485 transceiver (e.g., THVD1550) against ESD and cable-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Common-mode TVS pair (line-to-line and line-to-ground) using 1.5SMC82CA's symmetrical clamping to maintain signal integrity during ±8 kV contact ESD. Use Value: Maintains <1 ns response latency and preserves differential voltage swing by clamping common-mode spikes without distorting data edges. |
| Telecom DSL Line Interface | Medical Patient Monitor Sensor Input |
Use Scenario: Shielding ADSL/VDSL line driver outputs from lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: Paired 1.5SMC82CA devices configured line-to-line and line-to-ground to absorb 10/700 µs telecom surges per ITU-T K.21. Use Value: Limits induced common-mode voltage to <113 V, preventing breakdown of isolation transformers and front-end op-amps. |
Use Scenario: Protecting analog front-end inputs (ECG, SpO₂) from ESD during clinical handling and defibrillator leakage currents. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA at 70.1 V) bidirectional TVS placed at connector entry point to shunt transients before instrumentation amplifier input stage. Use Value: Avoids signal offset drift or saturation caused by high-impedance node injection - critical for sub-mV physiological signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA (Bourns) | 85 V VBR min/max (76.5–89.8 V), same 1500 W rating, SMB package (smaller footprint, higher RθJA = 60 °C/W). | Lower clamping voltage (121 V vs. 113 V) and reduced thermal mass limit sustained surge duty cycle in high-ambient environments. | Select when board space is constrained and thermal derating is managed via copper pour; verify IPPM (12.3 A) suffices for target surge profile. |
| SMCJ85CA (Littelfuse) | 85 V VBR min/max (76.5–89.8 V), identical DO-214AB package, 1500 W rating, but higher VC = 121 V and IPPM = 12.3 A. | Higher clamping voltage increases stress on downstream components; lower IPPM reduces margin for multi-pulse events. | Prefer only if legacy BOM alignment or second-source qualification requires Littelfuse branding; confirm system-level clamping margin remains acceptable. |
Compared with 1.5SMC82CA, SMBJ85CA offers smaller size but reduced thermal robustness, while SMCJ85CA shares the same package yet delivers weaker clamping performance - making 1.5SMC82CA optimal for applications demanding lowest possible VC and highest IPPM in DO-214AB form factor.
Availability
1.5SMC82CA is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial communication ports, telecom line interfaces, and medical sensor front-ends requiring stable component supply and full ISO 7637-2 compliance.
Supply support for 1.5SMC82CA 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 - with global distribution and AEC-Q101 qualified product lines.
The 1.5SMCxxCA series was developed specifically for high-reliability bidirectional surge suppression in automotive and industrial environments, emphasizing low clamping voltage, tight VBR tolerance, and robust thermal performance in surface-mount packages.
FAQ
What is the breakdown voltage range for the 1.5SMC82CA?
The 1.5SMC82CA has a guaranteed breakdown voltage (VBR) range of 77.9 V to 86.1 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range reflects process-controlled avalanche characteristics and ensures consistent triggering behavior across production lots and temperature extremes.
Is the 1.5SMC82CA unidirectional or bidirectional?
The 1.5SMC82CA is a bidirectional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's ordering convention. It provides symmetrical clamping in both polarities - no cathode band marking is present, and electrical specifications apply identically in forward and reverse directions.
What is the maximum clamping voltage of the 1.5SMC82CA at its rated peak current?
The 1.5SMC82CA exhibits a maximum clamping voltage (VC) of 113 V when subjected to its rated peak impulse current (IPPM) of 13.9 A, measured using the 10/1000 µs waveform defined in Fig.5 of the datasheet. This value defines the upper voltage limit imposed on protected circuitry during surge events.
Does the 1.5SMC82CA meet automotive surge immunity standards?
Yes, the 1.5SMC82CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), validated per the manufacturer's test report. Its 1500 W peak power rating and low clamping voltage make it suitable for 12 V and 24 V automotive power network protection.
What is the thermal resistance from junction to case for the 1.5SMC82CA?
The 1.5SMC82CA has a junction-to-case thermal resistance (RθJC) of 15 °C/W, measured under standard mounting conditions on FR-4 PCB with 1 in² copper pad. This value enables accurate thermal modeling when designing for continuous power dissipation or repetitive surge duty cycles.
1.5SMC82CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 13.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC82CA FAQ
1.How can I place an order for 1.5SMC82CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82CA 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 1.5SMC82CA reliable?
The price and inventory of 1.5SMC82CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC82CA is usually 5 days.
3.What payment methods are accepted for 1.5SMC82CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82CA?
1.5SMC82CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82CA 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 1.5SMC82CA?
For technical support, including 1.5SMC82CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82CA requirements.
6.How does Aetrix verify that 1.5SMC82CA is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82CA 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 1.5SMC82CA meets industry standards.
7.What is the process for return or replacement of 1.5SMC82CA?
All 1.5SMC82CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82CA, 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 1.5SMC82CA part is unused and in its original packaging.
Return procedure for 1.5SMC82CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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