CR1206-FX-1050ELF Bourns Resistor (Resistor Chip) In Stock
Bourns CR1206-FX-1050ELF is a 105 Ω thick-film chip resistor in 1206 package (3.1 mm × 1.6 mm × 0.55 mm) rated at 1/4 W with 1% tolerance and ±100 ppm/°C temperature coefficient. RoHS and REACH-compliant with an operating temperature range of -55°C to +155°C. Available from stock worldwide for general-purpose surface-mount circuit applications.
- Manufacturer
- Bourns
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- CR1206-FX-1050ELF Datasheet PDF
- Category
- Resistor
- Temp Range
- -55.0°C to 155.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 105 Ω resistance with 1% tolerance and ±100 ppm/°C temperature coefficient ensures precision current sensing and voltage divider accuracy in industrial circuits
- 1/4 W (0.25 W) power rating in 1206 package (3.1 mm × 1.6 mm) handles higher power dissipation than 0402 or 0603 resistors in compact designs
- Wide operating temperature range of -55°C to +155°C with RoHS and REACH compliance for automotive, industrial, and high-reliability applications
Applications
The CR1206-FX-1050ELF is used in current-limiting, voltage divider, and feedback networks in power supplies, motor drivers, and industrial sensor interfaces where a reliable 105 Ω, 1/4 W resistor is required. Its 1206 footprint provides higher power handling than smaller SMT packages, making it suitable for LED current limiting, pull-up networks, and load resistor applications in consumer and industrial electronics. The 1% tolerance and ±100 ppm/°C temperature stability ensure consistent performance across wide operating temperature ranges.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| Factory Lead Time | 12Weeks |
| YTEOL | 12 |
| Construction | Rectangular |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Package Height | 0.55mm |
| Package Length | 3.1mm |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Package Width | 1.55mm |
| Packing Method | TR, PAPER, 7 INCH |
| Rated Power Dissipation (P) | 0.25W |
| Rated Temperature | 70°C |
| Resistance | 105Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 1206 |
| Surface Mount | YES |
| Technology | METAL GLAZE/THICK FILM |
| Temperature Coefficient | 100ppm/°C |
| Terminal Finish | TIN OVER NICKEL |
| Terminal Shape | WRAPAROUND |
| Tolerance | 1% |
| Working Voltage | 200V |
| Package | Resistor Chip |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.21.00.30 |
| Country of Origin | Taiwan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What resistance value and power rating does the CR1206-FX-1050ELF offer for current-limiting circuits?
The CR1206-FX-1050ELF has a resistance of 105 Ω with 1% tolerance and a power rating of 1/4 W (0.25 W). At 105 Ω and 0.25 W, the maximum continuous current through this resistor is approximately 48.8 mA, and the maximum voltage drop is approximately 5.12 V, making it suitable for LED current-limiting and low-voltage signal conditioning circuits.
How does the 1206 package compare to 0805 for the CR1206-FX-1050ELF in terms of power handling and solderability?
The 1206 package (3.1 mm × 1.6 mm × 0.55 mm) of the CR1206-FX-1050ELF supports up to 0.25 W, compared to 0.125 W for a typical 0805 resistor. The larger 1206 pad size also improves manual soldering reliability and reduces sensitivity to solder joint cold joints during hand rework, which is beneficial in low-volume industrial and prototyping environments requiring consistent assembly quality.
Why select a 105 Ω resistor like CR1206-FX-1050ELF instead of a standard 100 Ω value for impedance-matching applications?
The 105 Ω E96 series value is typically chosen in precision impedance networks where cascaded resistors must combine to a target value such as 210 Ω, 315 Ω, or to trim an existing network to a specific gain. Using 105 Ω instead of 100 Ω allows tighter overall system accuracy when paralleled or series-combined with other precision resistors, since the 1% tolerance on 105 Ω spans ±1.05 Ω versus ±1 Ω on 100 Ω, providing finer design granularity in the E96 resistor series.
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