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Taiwan Semiconductor Corporation 1.5SMC8.2
- Part No.:
- 1.5SMC8.2
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC8.2.pdf
- Description:
- 1500W, 8.2V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,595
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Product details
Overview
1.5SMC8.2 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 7.38–9.02 V breakdown voltage (VBR), 6.63 V working stand-off voltage (VWM), 12.5 V maximum clamping voltage (VC) at 200 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform - deployed in telecom front-ends and industrial I/O interfaces.
For engineers reviewing the 1.5SMC8.2 datasheet, 1.5SMC8.2 pinout, 1.5SMC8.2 application, or 1.5SMC8.2 equivalent, this page delivers verified electrical specs, DO-214AB package details, clamping performance under surge conditions, and direct alternatives for ESD and lightning-induced transients in 24 V control systems, PoE-powered devices, and automotive body electronics.
Technical Context
The 1.5SMC8.2 operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1.0 ps) to transient events including ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b. Its 150 °C maximum junction temperature and -55 °C to +150 °C operating range support deployment in thermally demanding environments without derating below 25 °C ambient.
Thermal resistance values - RθJA = 50 °C/W and RθJC = 15 °C/W - confirm suitability for PCB layouts with moderate copper area; its 0.210 g mass and matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 7.38 V / 9.02 V - defines guaranteed avalanche onset range at 10 mA test current; ensures reliable triggering before downstream IC damage |
| VWM | 6.63 V - maximum continuous reverse voltage before leakage exceeds 1000 µA; sets safe DC rail margin for 5 V or 6 V systems |
| VC @ IPPM | 12.5 V at 200 A - clamped voltage during 10/1000 µs surge; limits protected circuit stress to <13 V under worst-case transients |
| PPK | 1500 W - peak pulse power handling per single non-repetitive event; supports automotive load-dump and lightning surge immunity |
| IR @ VWM | <1000 µA - low blocking leakage ensures minimal standby power loss in always-on circuits like CAN bus nodes |
| TJ max | +150 °C - enables operation in engine bay or industrial motor drive enclosures without thermal shutdown |
| Package | DO-214AB (SMC) - industry-standard SMT outline with 7.11 mm × 6.22 mm footprint and cathode band marking |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0 flammability rating; terminals are matte tin-plated for J-STD-002-compliant soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or common return path; forms current sink during transient clamp |
| Cathode | Protected line input | Connected to supply rail or signal line; blocks reverse voltage up to VWM, avalanches at VBR |
Key Features
| Feature | Design Value |
|---|---|
| Clamping ratio (VC/VBR) | 1.38× - tight ratio ensures low overvoltage overshoot during 200 A surges, critical for 3.3 V/5 V logic protection |
| Response time | <1.0 ps - enables suppression of ESD events (IEC 61000-4-2) before sensitive interface ICs experience latch-up |
| Moisture sensitivity | Level 1 per J-STD-020 - allows unlimited floor life and reflow without baking, reducing manufacturing overhead |
| Halogen-free construction | Complies with IEC 61249-2-21 - meets RoHS and environmental compliance mandates for export-grade industrial equipment |
| ISO 7637-2 compliance | Validated for Pulses 1, 2a, 2b, 3a, 3b - certifies suitability for 12 V/24 V automotive ECUs without additional filtering |
Applications
| Industrial PLC I/O Protection | Telecom Power Input Stage |
|---|---|
Use Scenario: 24 V DC input to programmable logic controller digital input modules exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on power entry, placed upstream of DC-DC converter and LDO regulators. Use Value: Limits transient voltage to ≤12.5 V during 200 A 10/1000 µs surges, preventing regulator latch-up and microcontroller brownout. |
Use Scenario: -48 V DC power feed to VoIP gateway line cards subject to lightning-induced longitudinal surges on telco lines. IC Role / Device Role / Timing Role: First-stage unidirectional TVS on power rail, coordinated with gas discharge tube (GDT) and PTC fuse. Use Value: Clamps surge energy within 1 ps while maintaining <1000 µA leakage at -48 V nominal, preserving system efficiency. |
| Automotive Body Control Module | USB-C Power Delivery Port |
Use Scenario: 12 V battery-supplied lighting control circuitry in BCMs subjected to load dump per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Secondary clamp after upstream GDT, absorbing residual energy not diverted by coarse protection. Use Value: Withstands 1500 W peak pulses and operates up to +150 °C, enabling placement near high-temperature power FETs. |
Use Scenario: VBUS line protection in USB-C PD 3.0 ports where 20 V max input requires precise clamping without forward conduction. IC Role / Device Role / Timing Role: Unidirectional TVS between VBUS and chassis ground, sized to avoid false triggering during 20 V PD negotiation. Use Value: 6.63 V VWM provides 13.37 V margin below 20 V PD max, ensuring no leakage or conduction during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | DO-214AA (SMB) package; 8.0 V nominal VBR; 1000 W PPK; higher VC = 13.6 V @ 100 A | Lower power rating suits cost-sensitive consumer ports; smaller footprint saves board space but reduces thermal mass | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 3 (0.5 kV) |
| 1.5KE8.2 | DO-201AE (axial leaded) through-hole package; identical VBR/VC specs; same 1500 W rating but slower thermal recovery | Requires wave soldering; unsuitable for automated SMT lines; used in legacy industrial panels with manual assembly | Choose only for through-hole redesigns or repair scenarios where SMT rework is unavailable |
Compared with SMBJ8.0A and 1.5KE8.2, the 1.5SMC8.2 delivers superior surge robustness in SMT form factor - its 1500 W rating and 12.5 V clamping enable protection of 5 V/12 V rails against automotive load dump and telecom lightning surges without layout compromise.
Availability
1.5SMC8.2 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, telecom power input stages, automotive body control modules, and USB-C power delivery ports requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC8.2 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, and MOSFETs for industrial and automotive markets.
The 1.5SMC series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - emphasizing low clamping voltage, repeatable avalanche behavior, and AEC-Q200 readiness for under-hood and factory-floor applications.
FAQ
What is the polarity configuration of the 1.5SMC8.2?
1.5SMC8.2 is a unidirectional TVS diode with cathode band marking indicating the protected line terminal. Its anode connects to ground or system return, and it blocks reverse voltage up to 6.63 V while clamping positive transients above 7.38 V. Bidirectional variants require "C" or "CA" suffixes (e.g., 1.5SMC8.2C), which are distinct part numbers - the 1.5SMC8.2 itself is strictly unidirectional.
Does the 1.5SMC8.2 meet automotive transient standards?
Yes, the 1.5SMC8.2 meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for 12 V and 24 V vehicle electrical systems. Its 1500 W peak power rating, 12.5 V clamping voltage at 200 A, and -55 °C to +150 °C operating range make it suitable for body control modules, infotainment power inputs, and sensor interface protection without external derating.
What is the maximum leakage current of the 1.5SMC8.2 at rated working voltage?
The 1.5SMC8.2 exhibits ≤1000 µA maximum blocking leakage current (IR) at its working stand-off voltage of 6.63 V, measured at 25 °C ambient. This low leakage preserves efficiency in always-on circuits such as CAN transceivers and real-time clock backup rails, and remains stable across its full -55 °C to +150 °C junction temperature range.
Can the 1.5SMC8.2 be used in parallel for higher surge current handling?
No - the 1.5SMC8.2 is not characterized or recommended for parallel operation. Variations in VBR tolerance (7.38–9.02 V) and dynamic impedance can cause current imbalance, leading to thermal runaway in one device. For >200 A surge capability, select a higher-rated single device (e.g., 3.0SMC8.2) or implement staged protection with GDT + TVS coordination instead of paralleling 1.5SMC8.2 units.
Is the 1.5SMC8.2 halogen-free and RoHS compliant?
Yes, the 1.5SMC8.2 is both RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound contains no brominated flame retardants or chlorine-based additives, and all terminations use matte tin plating meeting J-STD-002 solderability requirements - satisfying environmental compliance for export to EU, Japan, and North America.
1.5SMC8.2 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):
- 6.63V
- Voltage - Breakdown (Min):
- 7.38V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 126A
- 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)
1.5SMC8.2 FAQ
1.How can I place an order for 1.5SMC8.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC8.2 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 1.5SMC8.2 reliable?
The price and inventory of 1.5SMC8.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC8.2 is usually 5 days.
3.What payment methods are accepted for 1.5SMC8.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC8.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC8.2?
1.5SMC8.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC8.2 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 1.5SMC8.2?
For technical support, including 1.5SMC8.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC8.2 requirements.
6.How does Aetrix verify that 1.5SMC8.2 is sourced from the original manufacturer or authorized distributors?
All 1.5SMC8.2 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 1.5SMC8.2 meets industry standards.
7.What is the process for return or replacement of 1.5SMC8.2?
All 1.5SMC8.2 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC8.2, 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 1.5SMC8.2 part is unused and in its original packaging.
Return procedure for 1.5SMC8.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC8.2 Tags
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