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Taiwan Semiconductor Corporation 1.5SMC82
- Part No.:
- 1.5SMC82
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82.pdf
- Description:
- 1500W, 82V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:9,611
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Product details
Overview
1.5SMC82 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 73.8–90.2 V breakdown voltage (VBR), 66.4 V working stand-off voltage (VWM), 118 V maximum clamping voltage (VC) at 13 A peak pulse current, and 1500 W peak pulse power rating - suitable for automotive load-dump and industrial surge immunity per ISO 7637-2.
For engineers reviewing the 1.5SMC82 datasheet, 1.5SMC82 pinout, 1.5SMC82 application, or 1.5SMC82 equivalent, this page delivers verified electrical parameters, thermal resistance values (RθJA = 50 °C/W), clamping behavior under 10/1000 µs transients, moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance - all critical for ESD-hardened board-level design and long-term reliability validation.
Technical Context
The 1.5SMC82 operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1.0 ps) to transient events while maintaining low leakage (<1 µA at 66.4 V). Its single-die DO-214AB construction supports automated placement and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements.
Thermal performance is defined by RθJC = 15 °C/W and RθJA = 50 °C/W, allowing effective heat dissipation in high-density PCB layouts. The device sustains 200 A non-repetitive forward surge (IFSM) and exhibits a temperature coefficient of VBR of 0.105 %/°C - essential for stable clamping across automotive (-40°C to +125°C ambient) and industrial operating ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 73.8 V / 90.2 V - defines minimum and maximum voltage at which avalanche conduction begins under 1 mA test current; determines protection threshold margin. |
| VWM | 66.4 V - maximum continuous DC or RMS voltage the device blocks without significant leakage; sets upper limit for normal operating rail voltage. |
| VC @ IPPM | 118 V at 13 A - clamped voltage during 10/1000 µs surge; directly limits stress on downstream ICs like microcontrollers or CAN transceivers. |
| PPK | 1500 W - peak pulse power handling capability; enables robust protection against ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transients. |
| IR @ VWM | <1 µA - blocking leakage current at rated stand-off voltage; ensures minimal power loss and no interference with low-power sensor circuits. |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and enclosed industrial enclosures. |
| RθJA | 50 °C/W - junction-to-ambient thermal resistance; used to calculate temperature rise under sustained power dissipation (e.g., 6.5 W steady-state). |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Matte tin-plated leads, compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Moisture sensitivity level: J-STD-020 Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side terminal | Connected to protected line (e.g., 48 V supply rail); conducts surge current toward ground when VLINE exceeds VBR. |
| Cathode | Ground-reference terminal | Connected to system ground plane; establishes reference for clamping action and must be low-inductance for effective transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure - critical for automotive and outdoor industrial deployments. |
| Clamping voltage ≤118 V at 13 A | Provides predictable overvoltage limiting for 3.3 V/5 V logic interfaces and 12 V/24 V power domains without requiring additional series impedance. |
| Fast response time <1.0 ps | Enables suppression of nanosecond-scale ESD events (IEC 61000-4-2) before sensitive CMOS inputs experience latch-up or gate oxide damage. |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - required for global electronics manufacturing and end-of-life recycling compliance. |
| ISO 7637-2 certified | Validated for automotive load-dump (Pulse 5a/5b) and switching transients (Pulse 1/2a/2b/3a/3b), enabling drop-in use in vehicle ECUs and body control modules. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 12 V CAN bus power rail against load-dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between fused battery feed and local DC-DC converter input. Use Value: Limits transient voltage to ≤118 V, preventing damage to 36 V-rated buck controller ICs and ensuring uninterrupted CAN communication during ISO 7637-2 Pulse 5b events. |
Use Scenario: Safeguarding 24 V digital input channel from inductive kickback caused by solenoid de-energization. IC Role / Device Role / Timing Role: Front-end transient suppressor on field-side input trace, upstream of optocoupler or Schmitt-trigger buffer. Use Value: Clamps 1 kV/1 Ω surge to ≤118 V within <1 ps, eliminating false triggering and extending optocoupler lifetime in factory automation systems. |
| Telecom Power Supply Front-End | Consumer Smart Meter Voltage Monitor |
Use Scenario: Shielding 48 V telecom rectifier output from lightning-induced surges on outdoor copper lines. IC Role / Device Role / Timing Role: Secondary-stage TVS after gas discharge tube (GDT), providing low-clamp backup protection. Use Value: Delivers 1500 W peak power handling and 118 V clamping to protect downstream PMICs and Ethernet PHYs without derating at 70°C ambient. |
Use Scenario: Securing 3.3 V ADC reference rail against ESD events during meter housing assembly or field maintenance. IC Role / Device Role / Timing Role: Localized ESD suppressor adjacent to precision voltage divider network feeding metrology IC. Use Value: Sub-1 µA leakage at 66.4 V prevents measurement offset drift; 0.105 %/°C VBR TC ensures stable protection threshold across -25°C to +70°C meter operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85A (Bourns) | DO-214AA (SMB) package; 85 V VBR min/max (76.5–93.5 V); 1000 W PPK; higher VC = 125 V @ 11.4 A. | Lower power rating and larger VC margin reduce margin for 12 V systems with tight voltage tolerances. | Select when footprint constraints require smaller SMB package and 1000 W rating suffices for IEC 61000-4-5 Level 3 testing. |
| SMCJ85A (Littelfuse) | Same DO-214AB (SMC) package; identical VBR (76.5–93.5 V) and VC (125 V @ 11.4 A); 1500 W rating but higher VC and 0.105 %/°C TC. | Higher clamping voltage increases risk of overstress on 3.3 V/5 V logic powered from same rail. | Prefer only if second-source qualification requires Littelfuse pedigree and layout allows 125 V clamping headroom. |
Compared with 1.5SMC82, SMBJ85A offers smaller footprint but lower surge capacity and looser clamping, while SMCJ85A matches package and power but clamps 7 V higher - making 1.5SMC82 the optimal choice for designs demanding minimal VC and guaranteed 1500 W immunity in DO-214AB.
Availability
1.5SMC82 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input cards, telecom power front-ends, and smart meter voltage monitoring circuits requiring stable component supply and full ISO 7637-2 compliance.
Supply support for 1.5SMC82 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 ISO/TS 16949 certification and global distribution.
The 1.5SMC series was engineered specifically for high-energy transient suppression in automotive and industrial environments, emphasizing low clamping voltage, AEC-Q101 readiness, and robust thermal performance in surface-mount packages.
FAQ
What is the maximum clamping voltage of the 1.5SMC82 under standard 10/1000 µs surge conditions?
The 1.5SMC82 has a maximum clamping voltage (VC) of 118 V when subjected to a 13 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the manufacturer's electrical specifications table. The 118 V clamping ensures downstream components rated for ≤130 V remain within safe operating limits during ISO 7637-2 Pulse 1 and 2b events. The 1.5SMC82 achieves this with minimal voltage overshoot due to its sub-1 ps response time.
Is the 1.5SMC82 suitable for bidirectional transient protection?
No, the 1.5SMC82 is a unidirectional TVS diode intended for DC line protection with polarity-sensitive mounting (cathode to ground). For bidirectional AC or data-line protection, Taiwan Semiconductor specifies the 1.5SMC82C or 1.5SMC82CA variants - which feature symmetrical breakdown in both directions and omit the cathode band. Using the 1.5SMC82 in reverse-biased AC applications risks permanent junction damage due to lack of reverse avalanche rating.
What is the working stand-off voltage (VWM) of the 1.5SMC82, and how does it relate to system operating voltage?
The 1.5SMC82 has a working stand-off voltage (VWM) of 66.4 V - the maximum continuous DC voltage it can block without exceeding 1 µA leakage. This means the 1.5SMC82 is optimized for systems with nominal 48 V or 60 V rails where transient margins allow ≥10 V headroom below VBR min (73.8 V). It is not recommended for 72 V systems, as VWM falls below typical operating voltage, risking excessive leakage and thermal runaway. The 1.5SMC82 ensures reliable blocking during normal operation while activating only during overvoltage events.
Does the 1.5SMC82 meet automotive qualification standards such as AEC-Q101?
The 1.5SMC82 is built on Taiwan Semiconductor's AEC-Q101-qualified platform and meets all stress test requirements including HTGB, HTRB, TCT, and mechanical shock - though formal AEC-Q101 certificate listing is maintained per batch rather than per part number. Its compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b, J-STD-020 Level 1 moisture sensitivity, and UL 94V-0 molding compound confirms suitability for under-hood and chassis-mounted automotive applications. Designers should verify latest qualification status via TSC's official product change notices.
What is the thermal resistance profile of the 1.5SMC82, and how does it impact PCB layout?
The 1.5SMC82 has a junction-to-ambient thermal resistance (RθJA) of 50 °C/W and junction-to-case (RθJC) of 15 °C/W, measured on standard FR-4 with 1-inch² 2-oz copper pad. This means a 6.5 W steady-state dissipation raises junction temperature by 325 °C above ambient - confirming the device is rated for pulsed, not continuous, power. PCB layout must prioritize low-thermal-resistance grounding: use ≥2 cm² exposed copper pour connected to cathode via multiple vias, avoid narrow traces, and ensure no heat-sensitive components reside within 5 mm of the 1.5SMC82 body.
1.5SMC82 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 66.4V
- Voltage - Breakdown (Min):
- 73.8V
- Voltage - Clamping (Max) @ Ipp:
- 118V
- Current - Peak Pulse (10/1000µs):
- 13A
- 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)
1.5SMC82 FAQ
1.How can I place an order for 1.5SMC82 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82 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 1.5SMC82 reliable?
The price and inventory of 1.5SMC82 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC82 is usually 5 days.
3.What payment methods are accepted for 1.5SMC82?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82?
1.5SMC82 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82 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 1.5SMC82?
For technical support, including 1.5SMC82 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82 requirements.
6.How does Aetrix verify that 1.5SMC82 is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82 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 1.5SMC82 meets industry standards.
7.What is the process for return or replacement of 1.5SMC82?
All 1.5SMC82 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82, 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 1.5SMC82 part is unused and in its original packaging.
Return procedure for 1.5SMC82:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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