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onsemi 1.5SMC8.2AT3G
- Part No.:
- 1.5SMC8.2AT3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC8.2AT3G.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,577
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Product details
Overview
1.5SMC8.2AT3G from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel overvoltage protection of DC power rails and signal lines. It features a 7.02 V working peak reverse voltage (VRWM), 8.2 V nominal Zener breakdown voltage (VBR) at 10 mA test current, and clamps to 12.1 V at 124 A peak pulse current - making it suitable for protecting automotive power supplies, industrial I/O interfaces, and telecom line cards against ESD and lightning-induced surges.
For engineers reviewing the 1.5SMC8.2AT3G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin above operating voltage, clamping voltage vs. protected IC absolute maximum ratings, thermal derating at elevated ambient temperatures, and UL 497B recognition for isolated loop circuit compliance.
Technical Context
This device operates as a Zener-based unidirectional TVS, leveraging avalanche breakdown to shunt transient energy away from sensitive downstream circuitry. Its response time is typically < 1.0 ns, and it exhibits low dynamic impedance (0.065 %/°C temperature coefficient of VBR) with < 200 µA leakage at VRWM.
Designed for surface-mount SMC (Case 403) packaging, it supports high-surge capability (1500 W @ 1 ms, 10×1000 µs waveform) and meets Class 3 ESD immunity (>16 kV HBM). It is Pb-free, AEC-Q101 qualified, and UL 497B recognized for isolated loop protection - distinguishing it from generic Zener diodes or bidirectional TVS variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 7.02 V - maximum continuous reverse voltage before clamping begins; must exceed system's DC operating voltage to avoid false triggering |
| VBR @ IT=10 mA | 8.2 V (nominal) - precise Zener breakdown threshold enabling accurate overvoltage trip point definition |
| VC @ IPP=124 A | 12.1 V - clamping voltage during worst-case surge; determines maximum stress on protected load |
| IPP | 124 A - peak pulse current capacity at 1 ms pulse width; defines surge energy handling (1500 W) |
| IR @ VRWM | 200 µA - low leakage ensures minimal standby power loss in battery-powered or high-impedance circuits |
| Response Time | < 1.0 ns - enables suppression of fast-rising transients before downstream ICs experience overstress |
| UL Recognition | UL 497B (QVGQ2 File #E210057) - certified for use in isolated loop protection circuits per safety standard |
Pinout & Package
1.5SMC8.2AT3G uses the SMC (Case 403) surface-mount package: 6.10 mm × 7.11 mm × 2.41 mm body, cathode indicated by molded notch, modified L-bend leads for enhanced solder joint reliability. Maximum soldering temperature is 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes conduction path during reverse transient |
| Cathode | High-side transient input terminal | Connected to protected line; carries full surge current into anode during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without derating at TL = 25°C |
| AEC-Q101 qualification | Validated for automotive under-hood and powertrain applications requiring extended temperature operation (−65°C to +150°C) |
| UL 497B recognition | Permits direct use in safety-critical isolated loop circuits (e.g., 4–20 mA sensor interfaces) without additional certification effort |
| Low temperature coefficient (0.065 %/°C) | Maintains stable clamping performance across industrial temperature ranges without significant VBR drift |
| Pb-free & RoHS compliant | Meets global environmental regulations and supports lead-free reflow profiles (JEDEC J-STD-020) |
Applications
| Automotive Power Rail Protection | Industrial 4–20 mA Loop Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges. Use Value: Clamps to 12.1 V at 124 A, ensuring microcontroller and CAN transceiver inputs remain below 13.2 V absolute max rating. |
Use Scenario: Safeguarding analog input stages of PLC analog modules connected to field sensors. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 4–20 mA loop terminals to absorb induced lightning surges. Use Value: UL 497B recognition validates suitability for isolated loop protection, eliminating need for external certification. |
| Telecom Line Card Surge Protection | Medical Equipment Power Input Stage |
Use Scenario: Front-end protection of Ethernet PHY power supplies in outdoor base station equipment. IC Role / Device Role / Timing Role: Primary surge suppression element on +3.3 V or +5 V bias rails feeding sensitive transceivers. Use Value: 1 ns response time prevents overshoot propagation into PHY ICs during fast EFT bursts (IEC 61000-4-4). |
Use Scenario: Overvoltage safeguard on auxiliary 5 V/12 V rails powering diagnostic imaging subsystems. IC Role / Device Role / Timing Role: Secondary-level TVS on internal DC-DC output rails to meet IEC 60601-1 creepage/clearance requirements. Use Value: Low leakage (<200 µA) avoids interference with precision analog front-ends and patient isolation integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SZ1.5SMC8.2AT3G | Identical electrical specs; AEC-Q101 qualified with PPAP documentation support and automotive-specific traceability | Required for Tier 1 automotive production; same footprint and clamping behavior but with enhanced process control | Select when automotive OEM compliance (e.g., ISO/TS 16949) and change control are mandatory |
| 1.5SMC8.2A | Same die and SMC package but supplied in legacy tape-and-reel (non-Pb-free); no "G" suffix indicates SnPb termination | Legacy industrial systems where RoHS exemption applies; not suitable for new designs targeting EU/China RoHS | Choose only for repair or obsolescence-mitigation in non-RoHS-regulated environments |
Compared with 1.5SMC8.2AT3G, SZ1.5SMC8.2AT3G adds automotive-grade process controls and documentation without altering electrical performance, while 1.5SMC8.2A lacks Pb-free compliance and modern supply chain traceability - making 1.5SMC8.2AT3G the optimal balance of reliability, regulatory alignment, and broad applicability.
Availability
1.5SMC8.2AT3G is available at Aetrix Electronics and suitable for automotive power distribution, industrial process control I/O modules, and medical device power input stages requiring stable component supply, long-term lifecycle assurance, and UL-recognized surge protection.
Supply support for 1.5SMC8.2AT3G 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The 1.5SMC8.2AT3G belongs to ON Semiconductor's SMC-series transient voltage suppressors - engineered specifically for high-energy surge immunity in harsh environments while meeting stringent safety and reliability standards.
FAQ
What is the clamping voltage of the 1.5SMC8.2AT3G at its rated peak pulse current?
The 1.5SMC8.2AT3G clamps to a maximum of 12.1 V at its rated peak pulse current of 124 A (10×1000 µs waveform). This value is measured under standardized transient conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with downstream ICs' absolute maximum ratings.
Is the 1.5SMC8.2AT3G suitable for automotive applications?
Yes, the 1.5SMC8.2AT3G is AEC-Q101 qualified and PPAP capable, confirming its suitability for automotive applications including engine control units, body electronics, and infotainment power supplies. Its operating temperature range of −65°C to +150°C and robust surge handling align with automotive environmental and reliability requirements.
Does the 1.5SMC8.2AT3G have UL recognition?
Yes, the 1.5SMC8.2AT3G carries UL 497B recognition (File #E210057, category QVGQ2) for isolated loop circuit protection. This certification validates its use in safety-critical applications such as 4–20 mA sensor loops without requiring additional third-party evaluation for surge protection compliance.
What is the difference between 1.5SMC8.2AT3G and SZ1.5SMC8.2AT3G?
The 1.5SMC8.2AT3G and SZ1.5SMC8.2AT3G share identical electrical specifications and packaging, but the SZ prefix denotes enhanced automotive process controls, site-specific change management, and PPAP documentation support. Both are AEC-Q101 qualified, yet SZ1.5SMC8.2AT3G is mandated for Tier 1 automotive production programs.
What is the maximum leakage current of the 1.5SMC8.2AT3G at its working voltage?
The 1.5SMC8.2AT3G exhibits a maximum reverse leakage current of 200 µA at its working peak reverse voltage (VRWM) of 7.02 V. This low leakage ensures minimal impact on power efficiency and signal integrity in high-impedance or battery-operated circuits where standby current is tightly constrained.
1.5SMC8.2AT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 124A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
1.5SMC8.2AT3G FAQ
1.How can I place an order for 1.5SMC8.2AT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC8.2AT3G 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 1.5SMC8.2AT3G reliable?
The price and inventory of 1.5SMC8.2AT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC8.2AT3G is usually 5 days.
3.What payment methods are accepted for 1.5SMC8.2AT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC8.2AT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC8.2AT3G?
1.5SMC8.2AT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC8.2AT3G 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 1.5SMC8.2AT3G?
For technical support, including 1.5SMC8.2AT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC8.2AT3G requirements.
6.How does Aetrix verify that 1.5SMC8.2AT3G is sourced from the original manufacturer or authorized distributors?
All 1.5SMC8.2AT3G 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 1.5SMC8.2AT3G meets industry standards.
7.What is the process for return or replacement of 1.5SMC8.2AT3G?
All 1.5SMC8.2AT3G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC8.2AT3G, 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 1.5SMC8.2AT3G part is unused and in its original packaging.
Return procedure for 1.5SMC8.2AT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC8.2AT3G Tags
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