The 0201WMJ0103TEE from UNI-ROYAL / ROYALOHM is a general-purpose thick-film chip resistor featuring a 10kΩ resistance value, ±5% tolerance, and 1/20W (50mW) power rating. Its compact 0201 SMD format is well suited for high-density PCB assemblies and miniature electronic equipment.
The resistor uses the 0201 imperial / 0603 metric package. Official dimensions are approximately 0.60 ±0.03mm × 0.30 ±0.03mm × 0.23 ±0.03mm, providing a very small board footprint for automated SMT assembly.
For the 0201 size, the manufacturer specifies a 25V maximum working voltage and 50V maximum overload voltage, with an operating-temperature range of −55°C to +155°C. Rated power must be derated at elevated ambient temperatures according to the manufacturer’s derating curve.
The temperature coefficient for 0201 resistors with resistance values above 10Ω is specified at ±200ppm/°C. Since this exact device is 10kΩ, the applicable TCR is ±200ppm/°C.
The thick-film construction uses a high-purity alumina substrate, resistive element, protective coating, Ni barrier termination, and lead-free outer tin termination. The series is suitable for both wave and reflow soldering.
Due to its extremely small package, the manufacturer states that 0201 resistors carry no resistance marking on the component body. Identification should therefore be made from the reel label, BOM, or electrical measurement rather than body printing.
The ordering code can be decoded using the manufacturer’s numbering system: 0201 identifies the chip size, WM represents a 1/20W rating, J represents ±5% tolerance, and 0103 represents 10kΩ under the 5% E-24 resistance coding format.
For the packaging suffix, T indicates tape-and-reel packaging, E represents a quantity of 15,000 pieces, and the final E identifies the standard lead-free version.
Key Specifications
- Manufacturer: UNI-ROYAL / ROYALOHM
- Manufacturer Part Number: 0201WMJ0103TEE
- Device Type: Thick Film Chip Resistor
- Mounting Type: SMD / SMT
- Resistance: 10kΩ
- Tolerance: ±5%
- Power Rating: 1/20W
- Power: 50mW
- Maximum Working Voltage: 25V
- Maximum Overload Voltage: 50V
- Temperature Coefficient: ±200ppm/°C
- Operating Temperature: −55°C to +155°C
- Imperial Size: 0201
- Metric Size: 0603
- Length: 0.60 ±0.03mm
- Width: 0.30 ±0.03mm
- Height: 0.23 ±0.03mm
- Substrate: High-Purity Alumina
- Outer Termination: Tin
- Barrier Layer: Nickel
- Soldering: Wave / Reflow
- Body Marking: None
- Wattage Code: WM = 1/20W
- Tolerance Code: J = ±5%
- Resistance Code: 0103 = 10kΩ
- Packaging Code: T = Tape & Reel
- Packing Quantity: 15,000 pcs/reel
- Final E Suffix: Standard Lead-Free Version
Typical Applications
Suitable for mobile electronics, GPS equipment, telecommunications, instrumentation, control boards, MCU peripheral circuits, voltage dividers, pull-up and pull-down networks, bias circuits, and general current-limiting applications. UNI-ROYAL specifically lists GPS, mobile phones, telecom equipment, PDA devices, digital CATV receivers, and meters among the applications for its standard thick-film chip resistors.
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