RSS3W51RJT76

METAL OXIDE FILM RESISTORS, FLAMEPROOF 1. Applicable Scope: This standard specification is for use in consumer electronics, computers, telecommunications, control instruments...etc. 2. Part Number: It is composed by Type, Rated Wattage, Nominal Resistance, Tolerance and Package/Terminal Form . e.g. RSS Type 2W Rated Wattage 10R Nominal Resistance J Tolerance T/B Package/Terminal Form 2.1 Type : Metal Oxide Film Resistors, Flameproof are called "RSN" &"RSS"(small size). 2.2 Rated Wattage: Shown by "W", such as 1/4W, 1/2W, 1W, 2W, 3W, 3WL, 4W, 5W, 6W, 7W, 10W. 2.3 Nominal Resistance: Ω , KΩ are its unit, which be in accordance with JIS-C6409 article 6 (EIA RS-196A) series. Letter "10R" indicates resistance value 10Ω. 2.4 Tolerance: It is measured by Bridge-method at room temperature and expressed by a capital letter. G＝±2% , J＝±5% . 2.5 Package/Terminal Form: T/R＝tape & reel ; T/B＝tape in box; Nil＝Bulk; MG form, F forms. T52＝52 mm width special tape in box; R52＝52 mm width special tape & reel. T76＝76 mm width special tape in box; R76＝76 mm width special tape & reel. Letter "PA" indicates radial type lead taping; Letter "PM" indicates radial type lead taping. Remark :RSN & RSS Series Resistors are RoHS & Halogen Free Compliant. 3. Rated Power: Rated power is the value of Max load power specified at the ambient temperature of 70℃, and shall meet the functions of electrical and mechanical performance. When the ambient temperature surpasses above mentioned temperature, the value declines as per following DERATING CURVE. 1 of 9 METAL OXIDE FILM RESISTORS, FLAMEPROOF 3.1 Rated Voltage: It is calculated through the following formula: E  P*R where E: rated voltage (V) P: rated power (W) R: nominal resistance value (Ω ) However, in case the voltage calculated exceeds the maximum load voltage, such the maximum load voltage shall be regarded as its rated voltage, means whichever less. 4. Dimension and structure: 4.1 Dimension: Unit: mm TYPE D±1 L±1 H±3 d±0.1 Resistance Range Max Working Voltage Max Overload Voltage RSS RSN 1/2W 1/4W 2.6±0.5 6.8 28 0.6 0.22Ω ~33KΩ 250V 400V 1/2W 3 9 28 0.65 0.22Ω ~33KΩ 300V 400V 3.5 9 28 0.65 0.22Ω ~50KΩ 350V 600V 1W 2W 1W 4.5 11 28 0.8 0.22Ω ~50KΩ 350V 600V 3W 2W 5 15 28 0.8 0.22Ω ~50KΩ 350V 600V 5W 3WL 8.5 24 38 0.8 0.22Ω ~100KΩ 500V 800V 6W 4W 8.5 32 33 0.8 0.22Ω ~150KΩ 500V 800V 7W 5W 8.5 41 38 0.8 0.22Ω ~200KΩ 750V 1000V 10W 7W 8.5 53 38 0.8 0.22Ω ~200KΩ 800V 1500V Notes:1. too low or too high ohmic values can be supplied only case by case. 2 .if high resistance values are required, we suggest using RDN series. 3. 0.22Ω ~9.1Ω are using alloy film. 4.2 STRUCTURE: 4.2.1 Ceramic Rod: It is made of Forsterite imported. 4.2.2 Terminal: Terminal is to be firmly connected with resistors element, both electrically and mechanically, and allow easy soldering. 2 of 9 METAL OXIDE FILM RESISTORS, FLAMEPROOF 4.2.3 Coating: Coating is done by light gray flameproof paint for RSN type and dark gray flameproof for RSS (resistant to 800℃) which is solid enough to be free from looseness, crack and easy breakage. It is also resistant to cleaning and industrial solvents, and the paint shall be limited within 2mm of lead wires from resistor body. 4.2.4 Marking: Marking is made on resistors surface, by four color coding; 1st, 2nd, 3rd: nominal resistance, 4th: tolerance. or marked with type of resistor, rated wattage, nominal resistance, tolerance and maker's trade mark (TY-OHM). 5. Operating Temperature Range: -55℃～155℃ 6. Mechanical Performance: 6.1 Terminal tensile: To fix the resistor body, a static load of 2.5kg. (under 1/2W:1kg.)is to be gradually applied into the terminal for 10 seconds without causing any looseness and fall. 6.2 Twist withstand: To bend the lead wire at the point of about 6mm from resistor body to 90°, then catch the wire at 1.2 ±0.4mm apart from the bent point end and turn it (clockwise) by 360 degrees perpendicular to the resistor axis at speed of 5 seconds per turn, and do the same counterclockwise again which constitute a whole turn. Repeat the turn 2 times without causing any break and looseness. 7. Electrical Performance: 7.1 Resistance Temperature Coefficient: It shall be within ±300ppm/℃. 6 T.C (ppm/℃) =〔(R2－R1)÷R1〕×〔1÷(T2－T1)〕×10 where R1: resistance value at reference temperature R2: resistance value at test temp. T1: reference temp. T2: test temp. 7.2 Temperature Cycle: Following temp. cycles are to be made 5 times and then put at room temp. for one hour, the resistance value change rate between pre-and-post test shall be within ±1% Steps st 1 step nd 2 step rd 3 step th 4 step Temperature(℃) -55 ± 3 Room temp. 155 ± 3 Room temp. 3 of 9 Time (minutes) 30 3 30 3 METAL OXIDE FILM RESISTORS, FLAMEPROOF 7.3 Short Time Over Load: When the resistors are applied 2.5 times as much as rated voltage for 5 seconds continuously, it shows no evidence of arc, flame...etc. Removing the voltage and place the resistors to the normal condition for 30 minutes, the resistance value change rate between pre-and-post test shall be within ±1%(RSS ＝ ±2%). 7.4 Insulation Character : Resistors are located in a V-shaped metal trough. Using the DC 100V or 500V megger instrument 2 poles to clutch either side of lead wires and metal trough, measuring the Insulation Resistance which shall be over 1000MΩ . 7.5 Voltage Withstanding: Resistors are located in a V-shaped metal trough. Applying Max Working Voltage for one minute and should find no physical damage to the resistors, such as arc, char ...etc. 7.6 Load Life: The resistors arrayed are sent into the 70℃ oven, applying rated voltage at the cycle of 1.5 hours ON, 0.5 hour OFF for 1000+48 -0 hours in total. Then, after removing the voltage, take the resistors out of the oven and left under normal temp. for one hour cooling. The resistance value change rate between pre-and-post test shall be within ±5%. 7.7 Moisture-proof Load Life: The resistors arrayed are placed into a constant temp./humidity oven at the temp. of 40 ±2℃ and the humidity of 90～95%, then rated power is applied for 1.5 hours and cut off for 0.5 hour. The similar cycle will be repeated for 500+24 -0 hours in total (including cut-off time). Then remove the voltage, taking the resistors out of the oven and leaving them at room temp. for one hour. The resistance value change rate between pre-and-post test shall be within ±5%. There also shall be no evidence of remarkable change on appearance, and the marking shall not be illegible. 7.8 Solder-ability: The leads with flux are dipped in a melted solder of 235 ±5℃ for 2 seconds, more than 95% of the circumference of the lead wires shall be covered with solder. 7.9 Resistance to Soldering Heat: Two leads are together dipped in a melted solder of 270 ±5℃ for 10 ±1 seconds, or 350 ±10℃ for 3.5 ±0.5 seconds, Then remove the resistors and leaving them at room temp. for one hour. The resistance value change rate between pre-and-post test shall be within ±1%. 7.10 Nonflammability: The resistors are applied the power of 16 times the rated wattage for 5 min. and shall not get flame. 4 of 9 METAL OXIDE FILM RESISTORS, FLAMEPROOF 8. Others: 8.1 MG Form: Unit: mm RSS RSN D±1 L±1 P H h±1 A±0.1 B±0.05 C±0.2 1/2W 3 9 12.5±1.5 7±1 4.5 0.23 0.8 1.2 3.5 9 15±1.5 7±1 4.5 0.23 0.8 1.2 1W 2W 1W 4.5 11 15±1.5 7±1 4.5 0.25 1 1.4 3W 2W 5 15 20±2 10±2 4.5 0.25 1 1.4 8.2 F Form: Unit: mm RSS RSN 1W D±1 L±1 A +1/-0.5 Applicable 3.5 9 3.5 F1~F4 2W 1W 4.5 11 3.5 F1~F4 3W 2W 5 15 3.5 F1~F4 5 of 9 METAL OXIDE FILM RESISTORS, FLAMEPROOF 8.3 Packing: 8.3.1 Taping Specifications： Unit: mm RSS RSN Package A B C ± 1 D Max E Max ≦1W ≦1/2W T/B, T/R 52 ± 1 5 ± 0.5 6 0.6 1.2 T52,R52 52 ± 1 5 ± 0.5 6 0.6 1.2 2W 1W T/B, T/R 63 ± 1 5 ± 0.5 6 0.6 1.2 T/B, T/R 63 ± 1 10 ± 1 6 0.6 1.2 T52, R52 52 ± 1 10 ± 1 6 0.6 1.2 76 ± 1.5 10 ± 1 6 0.6 1.2 3W 2W T76,R76 8.3.2 Tape in Box: Unit: mm QTY RSS RSN Type a b c PER BOX 1/2W 1/4W T/B 5,000 75 100 255 1/2W T/B 1,000 75 55 255 T/B 1,000 75 55 255 T52 1,000 75 55 255 T/B 1,000 85 105 260 T/B 1,000 100 110 265 T52 1,000 75 100 255 T76 1,000 105 114 265 1W 2W 3W 1W 2W 6 of 9 METAL OXIDE FILM RESISTORS, FLAMEPROOF 8.3.3 Tape & Reel: Unit: mm QTY RSS RSN Type A B C D E F PER REEL 1/2W 1/4W T/R 5,000 285 310 75 80 295 295 1/2W T/R 5,000 305 330 75 90 310 310 T/R 2,500 285 310 75 80 295 295 R52 2,000 285 310 75 80 295 295 T/R 2,000 285 310 75 80 295 295 T/R 1,000 285 310 75 80 295 295 R52 1,000 285 310 75 80 295 295 R76 1,000 285 310 90 105 295 295 1W 2W 3W 1W 2W 7 of 9 METAL OXIDE FILM RESISTORS, FLAMEPROOF 8.3.4 Radial type lead taping(PA): Unit: mm RSS RSN 1/2W 1W 2W 3W 1/4W 1W 2W P ±1 12.7 12.7 12.7 12.7 P0 ±0.3 12.7 12.7 12.7 12.7 P1 ±0.7 3.85 3.85 3.85 3.85 P2 ±1 6.35 6.35 6.35 6.35 F ±0.8 5 5 5 5 8 W W1 ±0.5 ±0.5 18 9 18 9 18 9 18 9 of 9 H1 H0 φ D0 max ±0.5 ±0.2 32 16 4 32 16 4 38 16 4 38 16 4 A ±1 6.8 9 11 15 φd ±0.1 0.6 0.65 0.8 0.8 φD ±1 2.6±0.5 3.5 4.5 5 METAL OXIDE FILM RESISTORS, FLAMEPROOF 8.3.5 Radial type lead taping(PM): Unit: mm RSS RSN 1W 2W 3W 1W 2W F +0.8/-0.2 7.5 7.5 7.5 P ±1 30 30 30 P0 ±0.3 15 15 15 P1 ±1 7.5 7.5 7.5 P2 ±0.8 3.75 3.75 3.75 H +1/-0 6.5 7.5 8.5 9 H0 ±0.7 19 19 19 of 9 A max. 14.5 17.5 21 W W1 ±0.5 ±0.5 18 9 18 9 18 9 φD ±1 3.5 4.5 5 φ D0 ±0.2 4 4 4 φd ±0.1 0.65 0.8 0.8 L ±1 9 11 15