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Taiwan Semiconductor Corporation 1.5KE82
- Part No.:
- 1.5KE82
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE82.pdf
- Description:
- 1500W, 82V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,697
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Product details
Overview
1.5KE82 from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a nominal breakdown voltage of 82V, minimum/maximum VBR of 73.8V/90.2V at 1.0mA test current, clamping voltage of 118V at 13A peak impulse current, working stand-off voltage of 66.4V, and DO-201 axial package. It is used to protect automotive ECUs, industrial power supplies, and telecom interfaces against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE82 datasheet, 1.5KE82 pinout, 1.5KE82 application, or 1.5KE82 equivalent, key selection criteria include clamping performance under 10/1000μs surge, leakage current below 1μA at VWM, thermal derating above 25°C, AEC-Q101 qualification status, and compatibility with lead-free reflow and J-STD-002 solderability requirements.
Technical Context
The 1.5KE82 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its junction structure delivers low dynamic impedance and sub-nanosecond response time (<1.0ps from 0V to VBR), enabling effective suppression of fast-rising ESD and EFT events.
It is rated for 1500W non-repetitive peak pulse power at TA = 25°C, with thermal derating to zero at 175°C junction temperature. The device meets ISO 7637-2 immunity requirements for automotive load-dump and inductive switching transients, and complies with RoHS and halogen-free standards per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1.0mA | 73.8V min / 90.2V max - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 66.4V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPP = 13A | 118V - clamped voltage during 10/1000μs surge, limiting downstream IC stress |
| PPK | 1500W - peak single-pulse energy handling capability under standardized waveform |
| IPP (max) | 13A - maximum surge current it can divert without failure at rated VC |
| Junction Temp Range | –55°C to +175°C - supports operation in under-hood automotive and industrial environments |
| Package | DO-201 - industry-standard axial-leaded package with 0.090g mass and UL 94V-0 molding compound |
Pinout & Package
DO-201 package: axial-leaded, cylindrical glass-passivated body with cathode band marking. Cathode terminal is marked by a colored band; anode is unmarked end. Leads are pure tin-plated, compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche node | Connected to protected line; conducts during overvoltage to shunt surge to ground |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| 1500W surge rating (10/1000μs) | Enables robust protection against ISO 7637-2 Pulse 5a load dump and inductive switch-off events |
| Clamping ratio VC/VBR ≈ 1.6 | Ensures tight voltage margin between operating rail and clamping level for safe IC interface |
| Leakage <1μA at 66.4V | Minimizes standby power loss and avoids false triggering in low-power systems |
| AEC-Q101 qualified (1.5KE82H variant) | Validated for automotive under-hood applications including engine control and ADAS power domains |
| Response time <1.0ps | Provides effective suppression of nanosecond-scale ESD transients per IEC 61000-4-2 |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
|
Use Scenario: Protecting 12V/24V battery-fed ECUs from load-dump transients up to 120V. IC Role / Device Role: Unidirectional TVS placed between power rail and chassis ground. Use Value: Clamps 120V/100ms load-dump spikes to ≤118V, preventing damage to MCU, CAN transceivers, and voltage regulators. |
Use Scenario: Safeguarding programmable logic controllers (PLCs) against inductive kickback from solenoid drivers. IC Role / Device Role: Standoff protector on 24V DC input stage prior to DC-DC converter. Use Value: Absorbs 1500W surges from relay coil de-energization while maintaining <1μA leakage at 24V nominal operation. |
| Telecom Interface Protection | LED Driver Surge Suppression |
|
Use Scenario: Shielding RS-485 transceivers on outdoor base station backhaul links from lightning-induced surges. IC Role / Device Role: Primary-level TVS on differential bus lines referenced to local ground. Use Value: Limits common-mode transients to 118V within 1ps, preserving signal integrity and meeting IEC 61000-4-5 Level 3 requirements. |
Use Scenario: Preventing catastrophic failure of constant-current LED drivers exposed to AC line transients. IC Role / Device Role: Parallel-connected TVS across output terminals of 72V LED string supply. Use Value: Clamps 10/1000μs surges to 118V, avoiding overvoltage stress on MOSFET switches and current-sense resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse P6KE82A | Same DO-201 package, identical VBR (73.8–90.2V), but lower PPK = 600W and higher VC = 137V at 8.7A | Not suitable for 1500W ISO 7637-2 Pulse 5a; limited to lower-energy EFT and ESD scenarios | Select only if system surge energy is confirmed ≤600W and clamping headroom allows 137V |
| ON Semiconductor 1.5SMC82A | Surface-mount SMC package (DO-214AB), same electrical specs (VBR, VC, PPK), but requires PCB layout change and lacks AEC-Q101 option | Enables automated assembly but eliminates axial through-hole mounting; no automotive-qualified variant available | Choose for space-constrained designs where reflow compatibility and volume production outweigh mechanical mounting needs |
Compared with 1.5KE82, P6KE82A offers lower cost and footprint but sacrifices 60% surge capacity and clamping performance, while 1.5SMC82A matches full electrical capability in SMT form but removes AEC-Q101 qualification and through-hole serviceability.
Availability
1.5KE82 is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and telecom infrastructure requiring stable component supply with long-term lifecycle support and traceable sourcing.
Supply support for 1.5KE82 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 thyristors for industrial and automotive markets.
The 1.5KE series was developed to deliver high-reliability, high-power transient suppression in standard axial packages, targeting design-in for automotive ECUs, industrial motor drives, and power conversion systems demanding AEC-Q101 compliance.
FAQ
What is the polarity configuration of the 1.5KE82?
The 1.5KE82 is a unidirectional TVS diode with cathode marked by a band on the DO-201 body. It conducts only in reverse bias above VBR, making it suitable for DC rail protection where polarity is fixed. Bidirectional variants (e.g., 1.5KE82CA) exist but are distinct part numbers; the 1.5KE82 itself is strictly unidirectional.
Does the 1.5KE82 meet AEC-Q101 qualification?
The base 1.5KE82 is not AEC-Q101 qualified; however, the 1.5KE82H variant-identical electrically and mechanically but subjected to extended stress testing-is fully AEC-Q101 qualified. Engineers designing for automotive applications must specify 1.5KE82H to ensure compliance with automotive reliability standards.
What is the maximum clamping voltage of the 1.5KE82 under surge conditions?
The 1.5KE82 has a maximum clamping voltage (VC) of 118V at 13A peak impulse current (IPP) under the standard 10/1000μs waveform. This value is guaranteed across temperature and lifetime, and represents the highest voltage seen downstream during worst-case surge events.
How does the 1.5KE82 compare to the 1.5KE82A variant?
The 1.5KE82A has tighter VBR tolerance (77.9–86.1V vs. 73.8–90.2V for 1.5KE82) and slightly higher VWM (70.1V vs. 66.4V), resulting in improved noise immunity and reduced leakage at operating voltage. Both share identical PPK, VC, and package; the 'A' suffix denotes enhanced parameter grading.
Can the 1.5KE82 be used in bidirectional signal line protection?
No-the 1.5KE82 is unidirectional and unsuitable for AC or bidirectional data lines. For such applications, use the explicitly designated bidirectional variant 1.5KE82CA, which provides symmetrical clamping in both polarities and is tested per bipolar electrical specifications in the datasheet.
1.5KE82 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE82 FAQ
1.How can I place an order for 1.5KE82 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE82 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 1.5KE82 reliable?
The price and inventory of 1.5KE82 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE82 is usually 5 days.
3.What payment methods are accepted for 1.5KE82?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE82 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE82?
1.5KE82 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE82 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 1.5KE82?
For technical support, including 1.5KE82 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE82 requirements.
6.How does Aetrix verify that 1.5KE82 is sourced from the original manufacturer or authorized distributors?
All 1.5KE82 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 1.5KE82 meets industry standards.
7.What is the process for return or replacement of 1.5KE82?
All 1.5KE82 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE82, 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 1.5KE82 part is unused and in its original packaging.
Return procedure for 1.5KE82:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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