uxcell NTC Thermistors Resistor 3950 10 Values 81 Pcs Inrush Current Limiter Temperature Sensor Assortment Kit (3D-25 5D-7 5D-9 5D-11 5D-15 8D-9 10D-9 10D-11 20D-9 47D-15)

Description

Product Overview

The uxcell NTC Thermistor Assortment Kit is a comprehensive collection of 81 high‑quality NTC resistors, meticulously selected to deliver reliable inrush current limiting across a broad spectrum of electronic applications. Packaged in a sturdy box, the kit includes ten distinct resistance values—3D‑25, 5D‑7, 5D‑9, 5D‑11, 5D‑15, 8D‑9, 10D‑9, 10D‑11, 20D‑9, and 47D‑15—providing engineers and hobbyists with the flexibility to match exact circuit requirements. Each thermistor features a stable B‑value of 3950, a low residual resistance, and a wide operating temperature range from –55 °C to 200 °C, ensuring consistent performance even under demanding thermal conditions.

Designed with compact dimensions (11.5 × 8.98 × 0.71 in) and a lightweight profile (4.23 oz), the kit is ideal for space‑constrained designs while still delivering the power handling needed for surge suppression. The thermistors are constructed from high‑purity ceramic materials that resist thermal shock, providing long‑term durability and reliability in industrial, automotive, and consumer electronics environments.

Usage

Inrush current is a common challenge when powering devices such as electric motors, heating elements, LED drivers, and electronic ballasts. The sudden surge of current at power‑on can stress components, shorten lifespan, and cause voltage dips that affect other equipment on the same line. This kit’s NTC thermistors act as passive, self‑regulating devices that limit the initial surge, allowing the system to stabilize before normal operation resumes.

Typical applications include:

• Motor start‑up circuits for industrial automation and HVAC systems.
• Heater control modules in domestic appliances and commercial equipment.
• LED driver circuits for lighting fixtures, ensuring smooth illumination without flicker.
• Power supplies for electronic energy‑saving lamps and electronic ballasts.
• Protection of sensitive semiconductor devices in consumer electronics.

The kit’s variety of resistance values enables precise tuning for each specific load, making it a versatile solution for engineers who need to prototype or finalize designs without sourcing individual parts.

Why Choose Us

Choosing the uxcell NTC Thermistor Assortment Kit means selecting a product backed by rigorous quality control and a reputation for reliability. Each thermistor undergoes thorough testing for B‑value accuracy, resistance tolerance, and thermal endurance, ensuring that the specifications listed are met consistently. The kit’s packaging protects the components from moisture and static discharge, preserving performance throughout storage and handling.

Our commitment to customer satisfaction extends beyond the product itself. We provide detailed datasheets, application notes, and responsive technical support to help you integrate the thermistors efficiently into your designs. With a 4.8‑star rating from verified buyers, the kit has proven its value in real‑world projects, delivering the performance expected by professionals and hobbyists alike.

Key Features

• 81 high‑reliability NTC thermistors covering ten precise resistance values for flexible design options.
• Wide operating temperature range (‑55 °C to 200 °C) ensures stable performance in harsh environments.
• Low residual resistance and high B‑value (3950) provide effective inrush current limiting with minimal voltage drop.
• Compact, durable packaging protects components and simplifies inventory management.
• Dedicated technical support and comprehensive documentation for quick integration and troubleshooting.

FAQ

Can the thermistors be used in parallel?

No. The thermistors in this kit are designed for individual use in series or as standalone inrush limiters. Parallel connection can alter the B‑value and affect performance, so it is not recommended.

What is the maximum power rating of each thermistor?

Each thermistor is rated for up to 2 W continuous dissipation, with a short‑time surge capability that comfortably handles typical inrush currents for motors and heaters.

Are the resistance values calibrated?

Yes. All resistance values are measured and verified to be within the specified tolerance (±5 %). The datasheet provides exact nominal values for each part number.

How do I select the correct resistance value for my application?

Start by calculating the expected inrush current of your load and the desired limiting current. Use the thermistor’s resistance‑temperature characteristic curve (provided in the datasheet) to choose a value that will drop the voltage sufficiently at startup while allowing normal operation once the device heats up.

What warranty does uxcell offer for this kit?

uxcell provides a one‑year limited warranty covering manufacturing defects. If you encounter any issues, contact our support team with the product details for a replacement or refund.