User Manual: CHANZON 1W 1% Metal Film Resistor Kit

Introduction

This manual provides essential information for the safe and effective use of the CHANZON 1W 1% Metal Film Resistor Kit. This kit contains 175 pieces across 35 different values, with each value having 5 resistors. These high-precision metal film resistors are suitable for a wide range of electronic applications.

Safety Warnings (WARNING)

This section contains MANDATORY compliance terms. Violation of these operating procedures will result in product damage, circuit failure, and may cause serious safety hazards including fire and electric shock.

• Strictly prohibited from exceeding the rated power, rated voltage, and rated current marked on the product. Overloading will cause rapid temperature rise, burning, smoke emission, and pose a fire risk.
• The product operating ambient temperature must be controlled within -55°C to +125°C. Avoid proximity to open flames and high-temperature heat sources (such as heating elements or high-power chips). When used in non-ventilated environments, ensure adequate heat dissipation space is reserved.
• Prohibited for use in flammable/explosive environments, high-humidity conditions (relative humidity >85%), strongly corrosive atmospheres, or high-dust environments to prevent pin oxidation, film layer corrosion, and resultant short circuits or parameter drift.
• The resistor surface will experience temperature rise during continuous operation (noticeable for high-power specifications). Do not touch with bare hands to avoid high-temperature burns. Do not touch pins or body until cooled after soldering.
• Low-power through-hole metal film resistors are precision small components. Keep out of reach of children and pets to prevent accidental ingestion or pin puncture injuries.
• Disassembly, grinding, or modification of the resistor body is strictly prohibited. The product contains no user-serviceable internal components. Disassembly will damage the insulation protection layer, resulting in resistance failure or short circuits.
• During installation and soldering, strictly prohibit solder drips onto the insulating lacquer coating of the resistor body. The high temperature of molten solder will damage the film layer, causing performance degradation or immediate product scrapping.
• Discarded resistors constitute electronic waste. Do not dispose of with household garbage. They must be transferred to designated electronic waste recycling facilities in compliance with environmental protection regulations.

Specifications

Kit Contents

• Total Resistors: 175 pieces
• Number of Values: 35 unique resistance values
• Quantity per Value: 5 pieces of each value
• Resistance Range: 0.1 ohm to 1 M ohm
• Included Values: 0.1R, 0.22R, 1R, 2R, 2.2R, 4.7R, 10R, 22R, 47R, 100R, 150R, 220R, 330R, 360R, 390R, 470R, 560R, 680R, 1KR, 2KR, 2.2KR, 4.7KR, 6.8KR, 10KR, 15KR, 22KR, 47KR, 68KR, 100KR, 150KR, 220KR, 470KR, 620KR, 680KR, 1MR.

Physical Dimensions

• Lead Thickness: 0.6mm / 0.024 inch
• Body Diameter: 4.5mm / 0.177 inch
• Body Length: 11mm / 0.433 inch
• Lead Length (each side): 30mm / 1.181 inch
• Total Length: 71mm / 2.795 inch

Resistor Color Code Guide

Setup and Installation

Soldering and Installation Requirements

• Soldering Equipment: Use a temperature-controlled soldering iron set to 350°C ±20°C. Soldering time must be less than 3 seconds per cycle to avoid prolonged high-temperature exposure that could damage the lead plating and resistive film layer.
• Mounting Clearance: Maintain a distance of ≥5mm between the resistor body and the PCB solder pad during installation to prevent heat transfer from poor PCB heat dissipation. Strictly prohibited from bending leads flush against the resistor body.
• Lead Forming: Leads may be bent to accommodate PCB layout requirements, but the bend point must be ≥3mm from the resistor body. Recommended bending angle is <90°; avoid violent bending to prevent lead fracture or internal film layer detachment.
• Surface Preparation: Clean PCB solder pads and resistor leads before soldering to remove oxide layers and oil contamination, ensuring good solder wetting and preventing cold solder joints or poor electrical contact.
• Spacing Requirements: When mounting multiple resistors side by side, maintain ≥2mm spacing between adjacent resistors (≥5mm for high-power specifications) to ensure ventilation and heat dissipation, preventing mutual thermal influence between adjacent components.

Operating Instructions

Circuit Usage Requirements

• Power Compatibility: This resistor is suitable for both DC and AC applications. Precisely match resistance value and power ratings to circuit design requirements; strictly prohibited from substituting low-power resistors for high-power applications.
• Surge Protection: Avoid exposing resistors to standalone instantaneous high voltage or high current surges (such as inrush currents). If surge risks exist in the circuit, employ surge protection and current-limiting components.
• Humidity Precautions: Before use in high-humidity environments, verify the product shows no moisture absorption and leads show no oxidation; otherwise, insulation resistance degradation and circuit leakage may occur.
• EMI Considerations: When used in precision circuits (such as instrumentation and testing equipment), avoid locating resistors near strong electromagnetic interference sources to prevent parameter drift affecting circuit accuracy.

Storage and Maintenance

• Storage Environment: Before use, store products in sealed packaging at normal temperature (25°C ±5°C) and normal humidity (relative humidity 40%~70%), free from corrosive gases and direct sunlight, to prevent lead oxidation from long-term air exposure.
• Shelf Life: Under sealed packaging conditions, the product warranty period is 2 years (from date of manufacture). After expiration, resistance value and insulation parameters must be retested before use.
• Post-Opening Handling: Use opened products promptly. Reseal remaining products with desiccant to prevent moisture absorption and oxidation.

Troubleshooting

• Inspection Protocol: During routine maintenance, immediately discontinue use and replace with new products of identical specifications if the resistor body shows paint cracking, peeling, lead oxidation/rust, surface blackening, or deformation.
• Testing Precautions: During circuit inspection, do not use multimeter high-resistance ranges for prolonged measurements, as the internal voltage may damage the resistive film. Always disconnect circuit power before measurement to prevent damage to instruments and products from energized testing.

User Tips

• Users have noted the very nice quality of these resistors, making them a reliable choice for various projects.

Warranty and Support

All CHANZON products come with a 1-year warranty from the date of manufacture, provided they are stored under sealed packaging conditions. For any quality problems within 7 days of receipt, returns are accepted.

For support or inquiries, please refer to the official CHANZON store or contact customer service. All emails will be answered within 24 hours.

A user manual in PDF format is available for download: CHANZON 1W 1% Metal Film Resistor Kit User Manual (PDF)