4.7K Ohm 1/4w 1206 Resistor(Reel of 5000)

The 4.7K Ohm 1/4w 1206 Resistor is a precision thin-film surface-mount resistor designed for high-density PCB applications requiring stable voltage division, signal conditioning, and biasing circuits. Electronics engineers, PCB designers, and manufacturing facilities use these resistors extensively in consumer electronics, industrial control systems, and telecommunications equipment where space constraints and thermal stability are critical. This bulk reel of 5000 units solves the challenge of maintaining consistent component inventory for medium to large-scale production runs while eliminating the cost inefficiency of purchasing smaller quantities.

Product Overview

The 1206 package format (3.2mm x 1.6mm) represents the industry standard for mid-range power dissipation in surface-mount technology, offering superior thermal performance compared to smaller 0805 packages while maintaining compact footprint efficiency. The 4.7K Ohm resistance value operates within the standard E24 decade series, making it ideal for pull-up/pull-down resistor networks, transimpedance amplifier configurations, and impedance matching circuits. The 1/4 watt (0.25W) power rating provides adequate thermal margin in typical signal-level applications where peak dissipation rarely exceeds 50-100mW, ensuring long-term reliability without thermal runaway or component degradation.

These resistors feature thin-film construction with laser-trimmed precision, delivering tolerance specifications typically within 1% accuracy with temperature coefficient of 100ppm/°C, making them suitable for analog signal processing and precision measurement circuits. The reel format with 5000 units enables automated pick-and-place assembly systems to operate continuously without frequent component changeovers, significantly improving manufacturing throughput and reducing assembly labor costs. The lead-free, RoHS-compliant construction ensures compatibility with modern reflow soldering processes and meets international environmental regulations for electronics manufacturing.

Key Specifications

Specification	Details
Product Type	Surface Mount Thin-Film Resistor
Resistance Value	4.7K Ohm
Package Size	1206 (3.2mm x 1.6mm x 0.55mm)
Power Rating	1/4 Watt (0.25W)
Tolerance	1% (Standard)
Temperature Coefficient	100ppm/°C
Quantity per Reel	5000 Units
Reel Diameter	13 inches (330mm)
RoHS Compliance	Yes, Lead-Free
Brand	Original/Authentic
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: Laser-trimmed thin-film construction ensures accurate resistance values critical for analog circuits, transimpedance amplifiers, and precision measurement applications
• Compact 1206 Package: Optimized surface-mount footprint balances thermal dissipation capacity with PCB space efficiency for high-density board layouts
• Low Temperature Coefficient: 100ppm/°C specification maintains stable performance across -55°C to +125°C operating range, ideal for temperature-sensitive signal conditioning circuits
• Bulk Reel Format: 5000-unit reel configuration enables continuous automated assembly without component changeovers, maximizing production line efficiency and reducing labor costs
• RoHS Compliant: Lead-free construction meets international environmental standards and ensures compatibility with modern reflow soldering processes
• Excellent Frequency Response: Minimal parasitic inductance and capacitance in 1206 format supports applications up to 1GHz without signal distortion

Applications and Use Cases

• Analog Signal Conditioning: Use as precision pull-up/pull-down resistors in operational amplifier circuits, transimpedance amplifier front-ends, and photodiode signal conditioning where 1% tolerance is essential for gain accuracy
• Digital Logic Level Shifting: Configure in resistor divider networks for converting 5V TTL signals to 3.3V CMOS logic levels in microcontroller interfacing and mixed-signal PCB designs
• Power Supply Feedback Networks: Implement in voltage regulator feedback dividers and current-sense amplifier circuits where precise resistance values directly affect output voltage stability and accuracy
• Audio and RF Applications: Deploy in impedance matching networks, biasing circuits for RF amplifiers, and audio preamplifier gain-setting resistor networks requiring stable performance across temperature variations
• Industrial Control Systems: Use in sensor signal conditioning, PLC analog input modules, and industrial automation circuits where reliability and temperature stability are mission-critical
• Consumer Electronics Manufacturing: Ideal for high-volume production of smartphones, tablets, smart home devices, and IoT modules requiring consistent component quality and automated assembly compatibility

How to Use

When integrating the 4.7K Ohm 1206 resistors into your PCB design, first verify the footprint dimensions in your EDA software match the standard 1206 land pattern (3.2mm x 1.6mm with 2.5mm pad spacing). During schematic design, confirm the circuit operating voltage and maximum current to ensure the 0.25W power rating provides adequate thermal margin, typically requiring less than 50mW dissipation at nominal operating conditions. Place resistors strategically on the PCB to minimize trace lengths between high-impedance nodes and ground planes, reducing susceptibility to electromagnetic interference and improving signal integrity in analog circuits.

For automated assembly, ensure your pick-and-place machine is calibrated for standard 1206 component handling, and verify the reel orientation matches your feeder configuration. During reflow soldering, use standard lead-free solder profiles with peak temperature between 245-260°C, as thin-film resistors maintain full performance throughout the reflow cycle without degradation. After assembly, perform continuity testing and resistance verification at 10% of production batches to confirm component integrity, especially critical for precision analog applications where 1% tolerance specifications directly impact circuit performance.

Frequently Asked Questions

What is the maximum current rating for the 4.7K Ohm 1206 resistor at 0.25W power rating?

Using the formula P = I²R, the maximum current is approximately 7.3mA (calculated as √(0.25/4700)). In practical applications, operating at 50-70% of maximum current ensures thermal margin and extends component lifespan. For a 5V circuit, this resistor dissipates approximately 5.3mW at typical signal levels, well within safe operating limits.

Can these resistors be used in high-frequency RF applications above 500MHz?

Yes, the 1206 package exhibits minimal parasitic inductance (approximately 0.5nH) and capacitance, making it suitable for RF applications up to 1GHz. However, for circuits operating above 500MHz, ensure proper PCB layout with short traces, ground plane proximity, and appropriate via placement to minimize impedance discontinuities and maintain signal integrity.

What is the temperature coefficient impact on circuit accuracy over -40°C to +85°C range?

With 100ppm/°C temperature coefficient, a 4.7K Ohm resistor experiences approximately 47 Ohm variation over a 100°C temperature swing, representing 1% maximum drift. For precision circuits requiring better stability, consider using 0.1% tolerance resistors with 25ppm/°C coefficient, or implement temperature compensation techniques in your analog signal conditioning stage.

Is this reel compatible with standard pick-and-place machines?

Yes, the 13-inch (330mm) diameter reel with standard 1206 component spacing is fully compatible with all modern automated assembly equipment. The reel format includes proper component orientation marks and tape perforation for reliable feeder operation across Yamaha, Fuji, Panasonic, and other major pick-and-place platforms.

How should I store the reel to maintain component quality?

Store the sealed reel in a dry environment between 15-25°C with humidity below 40% RH. Unopened reels maintain full specifications for 12 months. Once opened, use components within 6 months and store in moisture-barrier bags with desiccant packs, especially important in humid climates like Bengaluru and coastal regions.

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 1/4w 1206 Resistor(Reel of 5000) Online in India

Purchase the 4.7K Ohm 1/4w 1206 Resistor(Reel of 5000) online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on 4.7K Ohm 1/4w