WCR1206-39KFI WELWYN Resistor (Resistor Chip) In Stock
Welwyn WCR1206-39KFI is a 1206 SMD thick-film resistor with 39 kΩ resistance, ±1% tolerance, and 0.25 W power rating — suitable for precision voltage dividers and signal conditioning circuits. The 1206 package offers ease of hand and automated assembly. Available from authorized distributors with worldwide shipping.
- Manufacturer
- WELWYN
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- WCR1206-39KFI Datasheet PDF
- Category
- Resistor
- Price
- From $0.0118(MOQ 250)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of WCR1206-39KFI?
- 39 kΩ thick-film resistance with tight ±1% tolerance for precision voltage divider and feedback network designs
- 0.25 W (250 mW) power rating in a 1206 SMD package supporting a wide range of signal-level circuit applications
- Industrial-grade construction with typical operating temperature range of -55°C to +155°C for reliable performance in harsh environments
What is WCR1206-39KFI used for?
The WCR1206-39KFI is commonly used in precision voltage divider networks, pull-up and pull-down circuits, and feedback resistor networks in analog amplifiers and ADC reference circuits. Its 39 kΩ value and ±1% tolerance make it suitable for sensor interface conditioning, industrial control loops, and op-amp gain-setting applications operating on 3.3 V to 24 V supply rails. The 1206 footprint allows reliable soldering in both prototype hand-assembly and high-volume pick-and-place production.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the WCR1206-39KFI datasheet?
WCR1206-39KFI Datasheet DownloadOfficial datasheet from WELWYN
What are equivalent replacements for WCR1206-39KFI?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What resistance, tolerance, and power rating does the WCR1206-39KFI provide?
The WCR1206-39KFI offers a 39 kΩ nominal resistance with ±1% tolerance and a 0.25 W (250 mW) power rating in a 1206 (3216 metric) SMD package. These specifications make it well suited for precision feedback and voltage divider networks in analog signal-processing and sensor interface circuits.
Over what temperature range does the WCR1206-39KFI maintain reliable resistance?
As a thick-film resistor, the WCR1206-39KFI is rated for operating temperatures from -55°C to +155°C. The temperature coefficient of resistance (TCR) for Welwyn's WCR series is typically 100 ppm/°C, ensuring the 39 kΩ value remains within acceptable limits across a wide industrial and automotive temperature range.
How does the WCR1206-39KFI compare to 0805 39 kΩ resistors in PCB layout constraints?
The 1206 package (3.2 mm × 1.6 mm) is larger than an 0805 (2.0 mm × 1.25 mm), offering a higher 0.25 W power dissipation and easier hand soldering. For designs constrained to lower power (0.125 W) but needing a smaller footprint, an 0805 39 kΩ ±1% alternative would occupy roughly 60% less board area.
Can the WCR1206-39KFI be used in a voltage divider from a 12 V supply to generate a 3.3 V reference?
Yes. Pairing the 39 kΩ WCR1206-39KFI with an approximately 18.2 kΩ lower resistor creates a divider yielding 3.3 V from a 12 V rail (ratio ≈ 0.275). The divider current would be approximately 209 µA, well within the 0.25 W rating, and the ±1% tolerance ensures the output voltage error stays within ±1.5% for precision ADC reference applications.
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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 |
|---|---|---|
| 250+ | $0.0400 | $10.00 |
| 500+ | $0.0370 | $18.50 |
| 5000+ | $0.0340 | $170.00 |
| 150000+ | $0.0123 | $1845.00 |
| 250000+ | $0.0121 | $3025.00 |
| 500000+ | $0.0118 | $5900.00 |
In Stock · 24h Response · Worldwide Shipping
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