WCR1206-3KFI WELWYN Resistor (Resistor Chip) In Stock
WCR1206-3KFI is a WELWYN thick-film chip resistor with 3 kΩ resistance, 1% tolerance, and 0.25 W power rating in a 1206 SMD package. Suitable for precision signal conditioning and voltage divider networks in industrial and commercial electronics. Available in tape-and-reel format with worldwide distribution.
- Manufacturer
- WELWYN
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- WCR1206-3KFI Datasheet PDF
- Category
- Resistor
- Price
- From $0.0190(MOQ 25)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of WCR1206-3KFI?
- 3 kΩ resistance with ±1% tolerance enabling precise voltage divider and feedback network design
- 0.25 W power rating in 1206 package providing generous thermal headroom for industrial use
- Thick-film construction delivering stable resistance over wide temperature range in harsh environments
- Standard 1206 footprint (3.2 mm × 1.6 mm) compatible with high-speed automated SMT assembly
What is WCR1206-3KFI used for?
WCR1206-3KFI is used in precision voltage dividers, pull-up/pull-down networks, and current-limiting resistor circuits across industrial control boards, consumer electronics, and test instrumentation. The 1% tolerance and 0.25 W rating make it suitable for feedback networks in op-amp circuits and signal conditioning stages where accurate 3 kΩ impedance matching is required. Its 1206 SMD footprint supports high-volume automated manufacturing on standard pick-and-place equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the WCR1206-3KFI datasheet?
WCR1206-3KFI Datasheet DownloadOfficial datasheet from WELWYN
What are equivalent replacements for WCR1206-3KFI?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What power rating and tolerance does the WCR1206-3KFI offer, and how do these affect circuit reliability?
The WCR1206-3KFI is rated at 0.25 W with a ±1% tolerance on its 3 kΩ resistance value. The 0.25 W power handling ensures the resistor operates safely in circuits where continuous DC or RMS current through 3 kΩ is up to approximately 9 mA at 5 V, and the 1% tolerance guarantees the actual resistance falls between 2970 Ω and 3030 Ω, which is critical for accurate voltage divider output and op-amp gain networks.
In which circuit topologies is a 3 kΩ, 1% resistor like WCR1206-3KFI most commonly used?
A 3 kΩ, 1% resistor is frequently used as the lower-leg element in precision voltage dividers producing reference voltages from a 5 V or 3.3 V rail, in pull-up configurations for I2C bus lines at 3.3 V with target pull-up currents around 1 mA, and as a feedback resistor in inverting op-amp stages where a gain of -3 is desired with a 1 kΩ input resistor. The 1% accuracy of WCR1206-3KFI keeps gain error below 2% in such configurations.
How does the 1206 package size of WCR1206-3KFI compare to 0402 or 0603 alternatives for high-current applications?
The 1206 package (3.2 mm × 1.6 mm) rated at 0.25 W offers twice the power dissipation of a standard 0603 resistor (0.1 W) and roughly four times that of a 0402 part (0.0625 W). For circuits where continuous power dissipation approaches 0.2 W such as a 3 kΩ pull-down resistor in a 24 V relay driver circuit drawing 8 mA, choosing the WCR1206-3KFI's 1206 package prevents overheating that would occur with 0603 or 0402 alternatives.
What is the temperature coefficient specification for thick-film resistors like WCR1206-3KFI and why does it matter for precision designs?
Thick-film chip resistors in the WCR1206 series typically exhibit a temperature coefficient of resistance (TCR) of ±100 ppm/°C, meaning the 3 kΩ value shifts by approximately ±0.3 Ω per °C change in operating temperature. Over a 100°C operating range from -25°C to +75°C, this translates to a worst-case resistance drift of ±30 Ω, which designers of precision analog front-ends should account for when maintaining less than 1% system accuracy across temperature is required.
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Why Buy from FindMyChip
About WELWYN
WELWYN is a leading electronic component manufacturer. FindMyChip sources WELWYN ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $2.0000 | $50.00 |
| 50+ | $1.8800 | $94.00 |
| 100+ | $1.7600 | $176.00 |
| 5000+ | $0.0210 | $105.00 |
| 10000+ | $0.0200 | $200.00 |
| 25000+ | $0.0190 | $475.00 |
In Stock · 24h Response · Worldwide Shipping
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