0805W8F4701T5E Specification:

1. Scope: This specification covers Thick Film Chip Resistors manufactured by UNI-ROYAL, suitable for small size, light weight, assembly cost reduction, and compatible with placement machines. Suitable for both wave and re-flow soldering.
2. Part Number System:

• 1st~4th codes: Part name (e.g., 0805).
• 5th~6th codes: Power rating (e.g., W8 = 1/8W).
• 7th code: Tolerance (e.g., F = ±1%).
• 8th~11th codes: Resistance Value (e.g., 470 = 47 followed by 0, which is 47,000 ohms or 47K ohms).
• 12th~14th codes: Packaging Type (e.g., T5 = Tape/Reel, 5,000pcs).

1. Ordering Procedure Example: 0805 W8 F 4701 T5 E
2. Marking: For 0805 size resistors, the marking will be "4701" which indicates 47 followed by three zeros, i.e., 47,000 ohms or 47K ohms.
3. Dimension:

• Length (L): 2.00mm ±0.15
• Width (W): 1.25mm +0.15/-0.10
• Height (H): 0.55mm ±0.10
• A: 0.40mm ±0.20
• B: 0.40mm ±0.20

1. Resistance Range:

• Power Rating at 70°C: 1/4W
• Tolerance: ±1%
• Range: 0.1Ω ≤ R ＜ 10MΩ

1. Ratings:

• Max. Working Voltage: 150V
• Max. Overload Voltage: 300V
• Dielectric withstanding Voltage: 500V
• Resistance Value of Jumper: <50mΩ
• Rated Current of Jumper: 2A
• Max. Overload Current of Jumper: 5A
• Operating Temperature: -55℃ to 155℃

1. Recommend the size of welding plate: Dimension (mm): A B C D 0805: 1.0±0.1 1.0±0.1 1.3±0.1 3.0±0.1
2. Derating Curve: Resistors shall have a power rating based on continuous load operation at an ambient temperature from -55℃ to 70℃. For temperatures exceeding 70℃, the load shall be derated as shown in the derating curve.
3. Performance Specification:

• Temperature Coefficient: 1Ω ≤ R ≤ 10Ω: ±200PPM/℃; 10Ω ≤ R ≤ 10MΩ: ±100PPM/℃
• Short-time overload: No evidence of flashover, mechanical damage, arcing, or insulation breakdown.
• Soldering heat: Dip the resistor into a solder bath at 260℃ ±5℃ for 10±1 seconds.
• Terminal bending: Twist of test board Y/X = 3/90 mm for 60 seconds.
• Insulation resistance: ≥1,000 MΩ.
• Humidity (steady state): After 240 hours exposure in a humidity test chamber controlled at 40±2℃ and 90-95% relative humidity.
• Load life in humidity: 1,000 hours (1.5 hours “ON”, 0.5 hour “OFF”) at RCWV in a humidity chamber controlled at 40℃±2℃ and 90 to 95% relative humidity.
• Low Temperature Storage: Lower limit temperature for 2 hours.
• High Temperature Exposure: Upper limit temperature for 16 hours and 1000 hours.
• Leaching: No visible damage after J-STD-002 Test D, samples completely immersed for 30 seconds in solder bath at 260℃.