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Taiwan Semiconductor Corporation 1.5SMC82H
- Part No.:
- 1.5SMC82H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82H.pdf
- Description:
- 1500W, 82V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,541
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Product details
Overview
1.5SMC82H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. 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 per 10/1000 µs waveform - deployed in automotive infotainment power rails and industrial I/O modules.
For engineers reviewing the 1.5SMC82H datasheet, 1.5SMC82H pinout, 1.5SMC82H application, or 1.5SMC82H equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, unidirectional polarity marking, DO-214AB (SMC) package thermal resistance (RθJA = 50 °C/W), and leakage current ≤1 µA at 66.4 V.
Technical Context
The 1.5SMC82H operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1.0 ps) to ESD and lightning-induced transients. Its single-die DO-214AB construction supports automated placement and meets AEC-Q101 qualification for automotive-grade reliability.
It complies with ISO 7637-2 for automotive load-dump and switching transient immunity, and exhibits low temperature coefficient of VBR (0.105 %/°C), ensuring stable clamping across –55 °C to +150 °C operating junction temperature range.
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; ensures predictable turn-on across process variation |
| VWM | 66.4 V - maximum continuous reverse operating voltage; must exceed system nominal DC rail (e.g., 48 V or 60 V bus) to prevent leakage during normal operation |
| VC @ IPPM | 118 V at 13 A - clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient overvoltage exposure |
| PPK | 1500 W - peak pulse power handling capability per single non-repetitive 10/1000 µs waveform; enables robust protection against ISO 7637-2 Pulse 5a (load dump) |
| IR @ VWM | ≤1 µA - reverse leakage at rated stand-off voltage; critical for low-power sensor or battery-backed circuits where quiescent current matters |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive environments and enclosed industrial enclosures |
| RθJA | 50 °C/W - junction-to-ambient thermal resistance; informs heatsinking requirements when used in high-duty-cycle surge scenarios |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0 flammability rating; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side (cathode-banded end is output/load side) | Connected to protected line (e.g., 48 V supply rail); conducts surge current toward ground when VLINE exceeds VC |
| Cathode | Output/Load side (marked by band) | Connected to ground or low-impedance return path; establishes unidirectional clamping direction from anode to cathode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements including HTOL, TC, HAST, and UHAST - suitable for front-end power protection in ADAS ECUs |
| ISO 7637-2 compliance | Tested against Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - ensures immunity in 12 V/24 V vehicle networks |
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives; maintains stable VBR after humidity exposure (J-STD-020 MSL Level 1) |
| Fast response time | <1.0 ps - limits voltage overshoot before clamping engages, protecting sensitive downstream ICs such as CAN transceivers or microcontrollers |
| Low leakage at VWM | ≤1 µA at 66.4 V - avoids unnecessary power loss in always-on systems like telematics modules or smart sensors |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 48 V DC power input of automotive body control module (BCM) against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground, clamping surges within 10/1000 µs waveform envelope. Use Value: Limits transient voltage to ≤118 V, preventing damage to 60 V-rated DC-DC converters and MCU power supplies per ISO 7637-2 Pulse 5a. |
Use Scenario: Shielding RS-485 transceiver inputs in factory automation PLC I/O modules from ESD and inductive kickback. IC Role / Device Role / Timing Role: Line-side TVS on differential pair, absorbing ±15 kV contact ESD (IEC 61000-4-2) and 40 A surge pulses. Use Value: Clamps to 118 V while maintaining <1 µA leakage at 5 V common-mode bias, preserving signal integrity and receiver sensitivity. |
| Telecom DC Feeder Protection | Renewable Energy Charge Controller Input |
|
Use Scenario: Safeguarding PoE-powered network switch DC input against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge clamp on 57 V DC feed line, coordinated with upstream GDT and downstream π-filter. Use Value: Delivers 1500 W peak power handling and 118 V clamping to meet ITU-T K.21 enhanced protection level for outdoor telecom equipment. |
Use Scenario: Protecting MPPT solar charge controller input from lightning surges on PV string wiring in off-grid installations. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at PV+ terminal, shunting surge energy to ground before entering buck converter stage. Use Value: Withstands 13 A 10/1000 µs pulses and operates up to +150 °C ambient - suitable for rooftop-mounted enclosures without active cooling. |
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 | DO-214AA (SMB) package; 85 V VBR min (85–94.4 V); 1000 W PPK; higher VC = 137 V @ 8.8 A | Limited to lower-energy transients; not rated for ISO 7637-2 Pulse 5a due to lower power rating | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 3 (4 kV) |
| 1.5KE82A | DO-201AD (Axial) through-hole package; same VBR range (73.8–90.2 V); 1500 W rating but slower thermal response and no AEC-Q101 qualification | Not suitable for automated SMT assembly or automotive under-hood use; requires manual rework or wave soldering | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ85A and 1.5KE82A, the 1.5SMC82H delivers superior automotive-grade reliability (AEC-Q101), optimized SMT manufacturability, and tighter thermal management (RθJA = 50 °C/W) - making it the preferred choice for production-grade 48 V/60 V DC systems requiring ISO 7637-2 compliance.
Availability
1.5SMC82H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom DC feeder safeguarding, and renewable energy charge controller input protection requiring stable component supply and full traceability.
Supply support for 1.5SMC82H 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, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The 1.5SMC series was engineered specifically for high-reliability surface-mount surge suppression in automotive and industrial environments - emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust glass-passivated junction technology.
FAQ
What is the polarity configuration of the 1.5SMC82H?
The 1.5SMC82H is a unidirectional TVS diode with cathode indicated by a band on the DO-214AB (SMC) package. It conducts only when the anode is positive relative to the cathode, making it suitable for DC power line protection where polarity is fixed. Bidirectional variants require CH or CAH suffixes (e.g., 1.5SMC82CH).
Does the 1.5SMC82H meet AEC-Q101 requirements?
Yes, the 1.5SMC82H is AEC-Q101 qualified per Version B2207 documentation. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST), confirming suitability for automotive electronic control units and power distribution modules.
What is the maximum clamping voltage of the 1.5SMC82H under surge conditions?
The 1.5SMC82H has a maximum clamping voltage (VC) of 118 V at 13 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
Can the 1.5SMC82H be used in bidirectional signal line protection?
No - the 1.5SMC82H is unidirectional only. For bidirectional protection (e.g., RS-485, USB, or AC-coupled lines), select the 1.5SMC82CH or 1.5SMC82CAH variant, which feature symmetrical breakdown in both directions and identical VBR, VWM, and VC specifications for positive and negative surges.
What is the thermal resistance of the 1.5SMC82H in its standard mounting configuration?
The 1.5SMC82H has a junction-to-ambient thermal resistance (RθJA) of 50 °C/W when mounted on a standard JEDEC-standard PCB with minimal copper area. With 1 in² of 2 oz copper on both sides and thermal vias, RθJA improves to approximately 35 °C/W - critical for estimating safe power derating above 25 °C ambient.
1.5SMC82H 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC82H FAQ
1.How can I place an order for 1.5SMC82H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82H 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 1.5SMC82H reliable?
The price and inventory of 1.5SMC82H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC82H is usually 5 days.
3.What payment methods are accepted for 1.5SMC82H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82H?
1.5SMC82H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82H 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 1.5SMC82H?
For technical support, including 1.5SMC82H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82H requirements.
6.How does Aetrix verify that 1.5SMC82H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82H 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 1.5SMC82H meets industry standards.
7.What is the process for return or replacement of 1.5SMC82H?
All 1.5SMC82H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82H, 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 1.5SMC82H part is unused and in its original packaging.
Return procedure for 1.5SMC82H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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