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Taiwan Semiconductor Corporation 1.5KE8.2A
- Part No.:
- 1.5KE8.2A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE8.2A.pdf
- Description:
- TVS 1500W 8.2V 5% UNIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:2,750
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Product details
Overview
1.5KE8.2A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 8.2V, minimum VBR of 7.79V at 10mA test current, maximum clamping voltage of 12.1V at 200A peak pulse current, and DO-201 package. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE8.2A datasheet, 1.5KE8.2A pinout, 1.5KE8.2A application, or 1.5KE8.2A equivalent, this device serves as a high-energy, low-clamping-voltage overvoltage protection component for DC power inputs, ECU front-end circuits, and inductive load switching nodes where fast response (<1ps), low leakage (<1µA above 10V), and AEC-Q101 qualification are required.
Technical Context
The 1.5KE8.2A operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified VBR range (7.79–8.61V). Its junction structure delivers low dynamic impedance and clamps transient energy within 12.1V at 200A (10/1000µs waveform), limiting stress on downstream ICs.
It is rated for TJ = –55°C to +175°C, supports steady-state power dissipation of 5W at 75°C lead temperature, and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements. Polarity is marked by cathode band; leads are pure tin plated per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 10mA | 7.79–8.61V - Ensures reliable turn-on before system damage threshold; tight tolerance enables precise overvoltage margining. |
| VWM | 7.02V - Maximum continuous reverse operating voltage; sets safe DC rail margin below breakdown. |
| VC @ IPP = 200A | 12.1V - Clamped voltage during worst-case 10/1000µs surge; defines upper bound of protected circuit stress. |
| PPK | 1500W - Peak pulse power handling capability; sustains automotive load-dump and inductive kick events. |
| IPP | 200A - Peak impulse current rating; validates robustness against high-current transients like ISO 7637-2 Pulse 2b. |
| TJ max | +175°C - Enables under-hood deployment in automotive ECUs without thermal derating concerns. |
| Response time | <1.0ps - Sub-picosecond avalanche initiation ensures protection before sensitive logic or analog circuitry responds. |
Pinout & Package
Package: DO-201 axial leaded package with cathode band marking; case meets UL 94V-0; weight ≈ 0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side return path; conducts during forward surge (e.g., reverse polarity events). |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., battery rail); avalanches into conduction when VAK > VBR, shunting surge to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard. |
| 1500W peak pulse power | Handles ISO 7637-2 Pulse 2b (inductive switch-off) and Pulse 5a (load dump) without degradation. |
| Clamping ratio VC/VBR = 1.48 | Low ratio indicates high efficiency in energy diversion - critical for protecting 5V/3.3V logic interfaces downstream. |
| Leakage current <1µA @ VWM | Minimizes standby power loss and avoids false triggering in low-power always-on systems (e.g., CAN wake-up circuits). |
| DO-201 mechanical robustness | Withstands 16mm × 16mm copper pad mounting; supports 5W steady-state dissipation at TL = 75°C. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12V supply input of BCM microcontroller from load-dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and LDO input; clamps within 1ps to limit voltage to ≤12.1V. Use Value: Prevents MCU brown-out or latch-up during 120V/400ms load-dump events per ISO 7637-2 Pulse 5a. |
Use Scenario: Shields 24V digital input channel of PLC from inductive kickback when solenoid valves de-energize. IC Role / Device Role / Timing Role: Front-end TVS on field-side input; absorbs 200A/10/1000µs surges induced by relay coil collapse. Use Value: Eliminates need for external snubbers; maintains signal integrity while meeting IEC 61000-4-4 EFT immunity. |
| LED Headlamp Driver Power Stage | Telecom Power Supply Input |
Use Scenario: Guards buck converter input stage in adaptive LED headlamps against jump-start transients up to 24V. IC Role / Device Role / Timing Role: Unidirectional clamp on 12V–24V input rail; activated before MOSFET gate oxide breakdown occurs. Use Value: Enables use of cost-optimized 30V-rated power FETs instead of 60V+ devices, reducing BOM cost and RDS(on). |
Use Scenario: Safeguards AC/DC front-end rectifier output in telecom power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-stage TVS after bulk capacitance; handles residual differential-mode transients missed by MOVs. Use Value: Provides <12.1V clamping ceiling for downstream PWM controller ICs, preventing VCC overvoltage failure. |
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 | Lower peak power (600W), smaller SMB package, VC = 13.6V @ 43.5A | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy transients (e.g., ESD, EFT) | Select when space-constrained PCB layout prioritizes footprint over automotive-grade surge capacity. |
| 1.5SMC8.2A | Same 1500W rating and DO-214AB package; VBR = 7.79–8.61V, VC = 12.1V @ 200A, but surface-mount only | Requires rework for through-hole legacy designs; lacks axial lead mechanical retention in high-vibration environments | Choose for new SMT designs needing identical electrical performance with automated assembly compatibility. |
Compared with SMBJ8.0A and 1.5SMC8.2A, the 1.5KE8.2A uniquely combines through-hole DO-201 ruggedness, AEC-Q101 qualification, and full 1500W ISO 7637-2 compliance - making it the only option among the three validated for under-hood automotive power rail protection without derating.
Availability
1.5KE8.2A is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and LED lighting power supplies requiring stable component supply across extended temperature ranges and high-reliability transient immunity.
Supply support for 1.5KE8.2A 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, and rectifiers with global AEC-Q101 certification capabilities.
The 1.5KE series was designed specifically for high-energy automotive and industrial transient suppression, emphasizing robust DO-201 packaging, low clamping ratios, and full ISO 7637-2 compliance - not general-purpose ESD protection.
FAQ
What is the maximum clamping voltage of the 1.5KE8.2A under a 200A 10/1000µs surge?
The 1.5KE8.2A has a maximum clamping voltage (VC) of 12.1V when subjected to a 200A peak pulse current with a 10/1000µs waveform. This value is measured per JEDEC standards and guarantees that downstream components see no more than 12.1V during such transients - critical for protecting 5V or 3.3V logic interfaces. The 1.5KE8.2A achieves this while maintaining low dynamic impedance and sub-picosecond response.
Is the 1.5KE8.2A qualified for automotive applications?
Yes, the 1.5KE8.2A is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity standards. Its DO-201 package passes JESD201 Class 2 whisker testing, and its junction temperature rating extends to +175°C - all confirming suitability for under-hood automotive ECUs, body control modules, and lighting systems. The 1.5KE8.2A data sheet confirms this qualification in the FEATURES section.
What is the working stand-off voltage (VWM) of the 1.5KE8.2A, and why does it matter?
The 1.5KE8.2A has a working stand-off voltage (VWM) of 7.02V - the maximum DC or continuous reverse voltage it can block without significant leakage. This parameter ensures the device remains non-conductive during normal operation while allowing sufficient margin below its 7.79V minimum breakdown voltage. For a 5V or 12V rail, VWM = 7.02V makes the 1.5KE8.2A appropriate for 6–7V nominal systems, preventing false triggering and minimizing standby current.
How does the 1.5KE8.2A differ from the 1.5KE8.2 (non-A) variant?
The "A" suffix in 1.5KE8.2A denotes tighter parameter tolerances: its VBR range is 7.79–8.61V (vs. 7.38–9.02V for 1.5KE8.2), and its VC is 12.1V (vs. 12.5V). The 1.5KE8.2A also carries AEC-Q101 qualification, whereas the base 1.5KE8.2 does not. Both share DO-201 packaging and 1500W rating, but only the 1.5KE8.2A is approved for automotive use per the official Taiwan Semiconductor documentation.
Can the 1.5KE8.2A be used in bidirectional configurations?
No - the 1.5KE8.2A is strictly unidirectional. Its datasheet specifies cathode-band polarity and lists only unidirectional parameters (e.g., forward voltage VF = 3.5V, IFSM = 200A). Bidirectional variants in the same family use "CA" suffixes (e.g., 1.5KE8.2CA) and exhibit symmetrical breakdown in both directions. Using the 1.5KE8.2A in reverse-biased AC applications would result in unintended conduction and failure.
1.5KE8.2A 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 130A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE8.2A FAQ
1.How can I place an order for 1.5KE8.2A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE8.2A 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 1.5KE8.2A reliable?
The price and inventory of 1.5KE8.2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE8.2A is usually 5 days.
3.What payment methods are accepted for 1.5KE8.2A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE8.2A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE8.2A?
1.5KE8.2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE8.2A 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 1.5KE8.2A?
For technical support, including 1.5KE8.2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE8.2A requirements.
6.How does Aetrix verify that 1.5KE8.2A is sourced from the original manufacturer or authorized distributors?
All 1.5KE8.2A 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 1.5KE8.2A meets industry standards.
7.What is the process for return or replacement of 1.5KE8.2A?
All 1.5KE8.2A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE8.2A, 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 1.5KE8.2A part is unused and in its original packaging.
Return procedure for 1.5KE8.2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE8.2A Tags
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