Compact surge resistant resistor Hongda RXF-1/2WS-10R-J-T52 suitable for electronic equipment and power supplies

Product Overview

The RXF series resistors from Dongguan Hongda Electronic Technology Co., Ltd. are designed for excellent surge resistance and good fusing consistency. These compact, easy-to-install, and reliable components are widely used in electronic equipment such as light sources, switching power supplies, chargers, and home appliances. The series has obtained VDE, UL/CUL, and CQC safety certifications.

Product Attributes

• Brand: RXF Series
• Manufacturer: Dongguan Hongda Electronic Technology Co., Ltd.
• Origin: China
• Certifications: VDE, UL/CUL (Cert No.: E359590), CQC (Cert No.: 0.5W-CQC13001095211, 1W-CQC13001095213, 2W-CQC13001095221)

Technical Specifications

General Data

• Nominal resistance tolerance: 5%, 10%
• Climatic category: 55/155/21
• Low air pressure: 8.5kpa
• Stability grade: 5%
• Resistance change limit: 5.1 Long-term test: (5%R+0.1); 5.2 Short-term test: (1%R+0.05)
• Temperature coefficient: Standard type 350 ppm; Semi-fusing type, explosion-proof type, high lightning surge type: 35001500 ppm
• Rated current: I(A) = P(W)/R()
• Derating curve: Rated power is the maximum value for continuous operation at 70. Power consumption is derated according to the curve when exceeding 70.
• Fusing characteristic: Defined as significant increase in resistance when subjected to specified overload, causing current to drop below 1/50 of the initial test current. Fusing time is the time from application of overload to fusing.
• Fusing time requirements under specified rated current overload conditions:
• Standard and High Lightning Surge Type (Table 3-1):
• 0.25W R1: 30S (6x rated current); R1: 30S (7x rated current)
• 0.5-2W R1: 30S (6x rated current); R1: 30S (6x rated current)
• Explosion-proof Type (Table 3-2): (Details not provided in excerpt)
• Semi-fusing Type (Table 3-3): (Details not provided in excerpt)
• Surge resistance performance: Test involves repeated closing and opening of switch K1 for 100 cycles (2S ON, 2S OFF). Test resistor should not become open circuit.
• Major test items, test methods, and performance requirements (Table 4):
• Resistance: Within nominal resistance and allowable deviation.
• Short-time overload: 2.5x rated voltage for 5S, resistance change R(2%R+0.05).
• Solderability: Over 90% circumferential coverage of solder on the immersed part.
• Voltage proof: No visible damage, clear marking, no breakdown or arcing.
• Resistance to soldering heat: Resistance change R(1%R+0.05).
• Rapid temperature change: Resistance change R(1%R+0.05).
• Endurance: Resistance change R(5%R+0.1).
• Lead strength: Resistance change R(1%R+0.05).
• Vibration: No mechanical damage; Resistance change R(1%R+0.05).
• Climatic sequence: Resistance change R(5%R+0.1); Insulation resistance 100M.
• Accidental overload: Silk screen cylinder does not catch fire.

Packaging and Marking

• Taped style and dimensions (Figure 4, Table 5): Various tape specifications (T26, T52, T63, T72) with corresponding dimensions.
• Sleeved product style and dimensions (Figure 5, Table 6): TA and TB types with specified dimensions.
• Molded style and dimensions (Figure 6, Table 7): N, B, and L types with specified dimensions.
• Model specification name explanation: Example: RXF 1W S 10 J. Includes rated power, resistance tolerance (J: 5%, K: 10%, M: 20%), nominal resistance (E24 series), miniaturization indicators (S: small, X: ultra-small), and color band marking system.
• Packaging method: Inner box: 1K/reel. Outer box packaging.