1. Document Type & Source:

️· Document: Datasheet for "Axial Lead Transient Voltage Suppressors (TVS)" – specifically the 1.5KE Series (6.8V to 600V, 1500W).
️· Manufacturer: SOCAY Electronics Co., Ltd. ([www.socay.com](http://www.socay.com)).
️· Revision Date: September 25, 2013.

2. Product Overview:

️· Type: Transient Voltage Suppressors (TVS) - used to protect circuits from voltage spikes.
️· Series: 1.5KE - a range of TVS diodes with various voltage ratings.
️· Voltage Range: 6.8V to 600V.
️· Power Dissipation: 1500W (peak pulse power).
️· Lead Type: Axial Lead.

3. Key Features & Specifications (from the tables and text):

️· Suffixes:
- 'A' indicates a 5% tolerance device.
- 'C' or 'CA' indicates a Bi-directional device.
️· Bi-directional vs. Uni-directional: The document notes that for Bi-directional devices with a VR of 10V or less, the IR limit is doubled.
️· Physical Specifications:
- Case: JEDEC DO-201 molded plastic.
- Polarity: Color band identifies the cathode (except for bipolar devices).
- Terminal: Matte tin-plated leads, solderable.
️· Environmental Specifications: Tests listed include temperature cycle, pressure cooker, high temperature storage, HTRB, and thermal shock.
️· Soldering Parameters: Detailed reflow soldering profile information is provided (temperatures, times, ramp rates).

4. Diagrams & Figures:

️· Peak Pulse Power Rating Curve: Shows how the maximum pulse power the device can handle changes with pulse duration.
️· Pulse Derating Curve: Shows how the pulse power capacity is reduced as the operating temperature increases.
️· Pulse Waveform: Illustrates the typical pulse waveform used for testing.
️· Typical Junction Capacitance: Shows the capacitance of the device as a function of reverse voltage.
️· Steady State Power Derating Curve: Shows the maximum continuous power dissipation as a function of case temperature.
️· Maximum Non-Repetitive Surge Current: Illustrates the maximum surge current the device can handle.
️· I-V Curve Characteristics: Illustrates the current-voltage characteristics of the TVS diode.

5. Testing and Standards:

️· The datasheet refers to various JEDEC standards (JEDEC DO-201, JESD22-A102, JESD22-A104, etc.) for testing and reliability.



In essence, this document provides a comprehensive technical specification for the 1.5KE series of TVS diodes, intended for engineers and designers using these components in their circuits. It covers electrical characteristics, physical attributes, testing methods, and recommended soldering practices.