4.7K Ohm 1/8W 805 Resistor(Reel of 5000)

The 4.7K Ohm 1/8W 805 Resistor is a precision thin-film surface mount resistor designed for high-density PCB applications requiring stable resistance values and low temperature coefficients. Professional electronics manufacturers, embedded systems engineers, and circuit designers rely on these resistors for signal conditioning, biasing networks, and impedance matching in consumer electronics, industrial control systems, and telecommunications equipment. This bulk reel of 5000 units solves the production challenge of maintaining consistent component quality while reducing per-unit costs in high-volume manufacturing environments.

Product Overview

The 4.7K Ohm 1/8W 805 Resistor operates on the principle of controlled electrical resistance through a thin-film resistive element deposited on a ceramic substrate. The 0805 (2012 metric) package dimensions of 2.0mm x 1.25mm x 0.55mm enable compact placement on modern PCBs while maintaining excellent thermal performance for 1/8 watt power dissipation. The thin-film construction provides superior frequency response characteristics and minimal parasitic inductance compared to thick-film alternatives, making it ideal for high-frequency applications up to several hundred megahertz.

This resistor features a typical tolerance of ±1% with a temperature coefficient of ±100 ppm/°C, ensuring predictable circuit behavior across industrial temperature ranges of -55°C to +125°C. The reel format of 5000 units is specifically engineered for automated pick-and-place assembly systems, reducing manual handling and increasing production throughput. The robust construction with nickel-chromium resistive element and tin-lead solder terminations provides excellent solderability and long-term reliability in harsh operating environments.

Key Specifications

Specification	Details
Product Type	Thin-Film Surface Mount Resistor
Resistance Value	4.7K Ohm
Power Rating	1/8W (0.125W)
Package Size	0805 (2.0mm x 1.25mm)
Tolerance	±1%
Temperature Coefficient	±100 ppm/°C
Operating Temperature Range	-55°C to +125°C
Quantity per Reel	5000 Units
Termination Type	Tin-Lead Solder
Frequency Range	DC to 500 MHz
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp

Key Features

• Precision ±1% tolerance ensures accurate circuit calculations and reduced design margin requirements in signal processing applications
• Low ±100 ppm/°C temperature coefficient maintains stable resistance values across wide temperature ranges critical for precision instrumentation
• Thin-film construction delivers superior frequency response with minimal parasitic effects for high-speed digital and RF circuits
• Bulk reel of 5000 units optimized for automated assembly reducing production costs and component handling time
• Compact 0805 package enables high-density PCB layouts while maintaining adequate thermal dissipation for 1/8 watt applications
• Robust nickel-chromium resistive element provides excellent long-term stability and reliability in harsh industrial environments

Applications and Use Cases

• Pull-up and pull-down resistor networks in microcontroller GPIO circuits and digital logic interfaces requiring stable biasing
• Signal conditioning networks in analog-to-digital converter input stages for precision measurement and data acquisition systems
• Impedance matching and termination networks in high-speed differential signaling protocols such as USB 3.0 and LVDS applications
• Feedback resistor networks in operational amplifier circuits for audio amplification, instrumentation, and precision analog signal processing
• Current limiting and voltage divider applications in LED driver circuits and power management subsystems
• RF matching networks and attenuator circuits in wireless communication modules and antenna tuning applications

How to Use

When implementing the 4.7K Ohm 1/8W 805 Resistor in your PCB design, ensure proper footprint matching with standard 0805 land patterns (2.0mm x 1.25mm minimum) to guarantee reliable solder joint formation during reflow soldering. The resistor should be mounted with the resistive element parallel to the PCB surface to optimize thermal dissipation. During pick-and-place programming, configure your assembly equipment to handle the reel format with appropriate feeder specifications for 0805 components, typically requiring 8mm or 12mm tape feeders depending on your machine compatibility.

For optimal performance, maintain reflow oven profiles between 240-260°C peak temperature with a time-above-liquidus of 60-90 seconds to ensure proper solder wetting without thermal stress. When designing circuits, account for the ±1% tolerance in your calculations and verify that the 1/8 watt power rating is not exceeded under worst-case operating conditions. In high-frequency applications above 100 MHz, minimize trace lengths between the resistor and connected components to reduce parasitic inductance effects, and consider ground plane placement beneath the resistor for improved RF performance.

Frequently Asked Questions

What is the difference between 0805 thin-film and thick-film resistors?

Thin-film resistors like this 4.7K Ohm model offer superior tolerance (±1%), lower temperature coefficients (±100 ppm/°C), and better frequency response characteristics up to several hundred megahertz. Thick-film resistors typically have ±5% tolerance and ±200 ppm/°C temperature coefficient but are more cost-effective for general-purpose applications. Thin-film construction is preferred for precision analog circuits, high-frequency applications, and instrumentation where accuracy and stability are critical.

Can I use these resistors in high-frequency RF circuits?

Yes, the 4.7K Ohm 1/8W 805 Resistor is rated for operation up to 500 MHz, making it suitable for RF and microwave applications. The thin-film construction minimizes parasitic inductance and capacitance, ensuring stable performance in impedance matching networks, attenuators, and termination circuits. For frequencies above 500 MHz, verify the specific frequency response characteristics and consider transmission line effects on your PCB layout.

What is the maximum power dissipation I can safely apply?

The 1/8 watt (0.125W) rating represents the maximum continuous power dissipation at 70°C ambient temperature. The maximum voltage rating for this 4.7K Ohm resistor is typically 200V, limiting current to approximately 42.6 mA. At higher ambient temperatures, derate the power rating by approximately 1.7% per degree Celsius above 70°C. Always maintain a safety margin of at least 20% below the maximum rating in your circuit design calculations.

How should I store the reel of 5000 resistors?

Store the sealed reel in a dry environment with relative humidity below 60% at room temperature (20-25°C). Avoid exposure to direct sunlight, extreme temperatures, and corrosive atmospheres. Unopened reels maintain their specifications for up to 12 months from the manufacturing date. Once opened, use the resistors within 6 months and store the reel in moisture-barrier packaging with desiccant packets to prevent oxidation of solder terminations.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy 4.7K Ohm 1/8W 805 Resistor(Reel of 5000) Online in India

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