TPAL1331 Planar Non-Inductive Power Resistor

The TPAL1331 is a planar non-inductive power resistor, also known as a TO-220 package high-power resistor. It features a bottom-mounted heatsink flange for enhanced heat dissipation, ensuring balanced thermal characteristics and excellent cooling. This resistor is designed for applications such as current detection, energy absorption and discharge, RC absorption, high-speed switching, and high-frequency circuits. It is also commonly used in voltage regulation, constant power loads, and low-energy pulse loads. The TPAL1331 series offers high reliability, stability, and power handling capabilities.

Product Advantages:

• Planar non-inductive power resistor
• TO-220 package with integrated flange for improved heat dissipation
• High reliability, high stability, high power
• Excellent long-term stability, low temperature coefficient, high heat dissipation, low thermal resistance, and low current noise
• Self-controlled production from raw materials to core processes

Applications:

• Current detection
• Energy absorption and discharge
• RC absorption
• High-speed switching
• High-frequency circuits
• Voltage regulation
• Constant power loads
• Low energy pulse loads
• Industrial lasers
• Welding equipment
• Test equipment
• Instrumentation
• UPS
• Automotive electronics
• Switching power supplies

Product Attributes:

• Brand: (Kaibu Electronics)
• Origin: Shenzhen, China
• Material: Thick film (resistor layer), Aluminum oxide (substrate), Copper plated nickel (flange)
• Certifications: AEC-Q200 (implied by test items)

Technical Specifications:

Soldering Recommendation:

Lead-free Wave Soldering Curve: Peak temperature 250-260C, soldering time 3s-6s, preheating temperature 91C-214C for 51s-71s.

Derating Curve:

Shows power derating based on ambient temperature. At 25C, 100% rated power is applicable. Power derating is required at higher temperatures.

Power Temperature Rise Curve:

Illustrates the temperature rise of the resistor surface at different power loads. With heatsink and flange temperature 30C, the maximum operating temperature is 150C.

Pulse Energy and Pulse Power Curves:

These curves provide guidance for applications involving pulse loads, indicating the maximum allowable pulse energy and power based on pulse duration.

Performance Indicators:

Mounting Recommendations:

• Apply thermal grease or thermal pad between the resistor flange and heatsink.
• Use screws with spring washers for secure connection.
• Recommended mounting torque: < 1.8 Nm.
• For full power applications, use water or oil cooling to maintain flange temperature 30C.

Packaging Dimensions:

Products are packed in tubes (50 PCS/tube), sealed with tape, bundled into stacks, and then placed in outer cartons (approx. 560*110*96mm).

Explanation on Rated Power and Temperature:

The 46W rated power is based on a flange temperature of 30C. Flange temperature is a critical indicator of heatsink effectiveness. Proper thermal design, calculation, and measurement are essential to prevent premature failure due to poor heat dissipation.

Heatsink Selection:

Customers must select appropriate heatsinks based on operating conditions (power, ambient temperature, etc.). The formula for power calculation considering thermal resistance is provided.

Standard Models:

Version Change Log:

Disclaimer:

All product information is subject to change without notice. Shenzhen Kaibu Electronics Co., Ltd. assumes no legal liability for any errors, inaccuracies, or omissions in the provided information. The product descriptions do not constitute an extension or modification of Kaibu Electronics' terms and conditions of purchase. Kaibu Electronics makes no warranties or representations beyond those expressly stated in the terms and conditions of purchase. To the maximum extent permitted by applicable law, Kaibu Electronics disclaims all liability arising from the use of the product, including but not limited to special, indirect, or incidental damages, and all implied warranties of fitness for a particular purpose, non-infringement, and merchantability. Product specifications and parameter tables may vary in different applications, and product performance may change over time. Recommended applications are based on Kaibu Electronics' understanding of typical needs. Customers are obligated to verify product suitability for specific applications using the provided parameters. Ensure you have the latest version of the information, available on resistor.today. The signing of this agreement does not constitute any express, implied, or other form of license related to Kaibu Electronics' intellectual property rights. Unless expressly stated otherwise, the products listed are not intended for use in life-saving or life-sustaining applications. Any unauthorized use in such applications is at the customer's own risk. Trademarks mentioned may belong to third parties.