The SMD250KH400J is a thick film chip resistor manufactured by TE Connectivity. It's designed for surface mount applications, offering a compact and reliable solution for current limiting, voltage division, and other general-purpose resistance functions in electronic circuits.

Applications

• Current Limiting Resistors: Used to limit current flow in LED circuits, power supplies, and other sensitive electronic components.
• Voltage Dividers: Creates a proportional voltage output from a higher voltage input for sensor circuits, control systems, and signal conditioning.
• Pull-Up and Pull-Down Resistors: Provides a defined logic state (high or low) for digital inputs in microcontrollers and other digital circuits.
• Snubber Circuits: Used to dampen voltage transients and reduce ringing in switching power supplies and other inductive circuits.
• Feedback Resistors: Used in amplifier circuits to control gain and stability.
• General-Purpose Resistors: Used in a wide variety of electronic circuits for basic resistance functions.

Features

• Surface Mount Device (SMD): Facilitates automated assembly and reduces board space requirements.
• Thick Film Construction: Provides excellent stability, reliability, and temperature coefficient performance.
• Compact Size: Allows for high-density circuit designs.
• High Resistance Value: The '250K' in the part number indicates a resistance of 250 kilohms.
• Tight Tolerance: The 'J' in the part number typically indicates a tolerance of ±5%.
• RoHS Compliant: Meets environmental regulations restricting the use of hazardous substances.

Benefits

• Precise Resistance Value: Ensures accurate circuit operation.
• Reliable Performance: Provides consistent and stable resistance over a wide range of operating conditions.
• Efficient Assembly: SMD design enables fast and cost-effective automated assembly.
• Space Saving: Compact size allows for miniaturization of electronic devices.
• Reduced Component Count: Can often replace multiple discrete components in certain applications.

Additional Details

The SMD250KH400J has a resistance value of 250 kΩ (kilohms) and a tolerance of ±5%. The power rating is usually 0.1W or 0.125W, but the datasheet must be consulted for the exact power rating. The operating temperature range is typically -55°C to +155°C. The temperature coefficient of resistance (TCR) is an important parameter, indicating the change in resistance with temperature. It's crucial to refer to the manufacturer's datasheet for precise specifications, including TCR, power rating, voltage rating, and package size (e.g., 0805, 1206) to ensure proper selection and application of the resistor. The '400' in the part number often refers to a specific packaging code or series within TE Connectivity's resistor offerings. Always verify the datasheet for complete specifications.