Flame-proof Non-Inductive KNP 0.25-10W Fusible Wire Wound Resistor 0.1-1000 Ohm ±5% With Smaller Size Available
Flame-proof Non-Inductive KNP 0.25-10W Fusible Wire Wound Resistor 0.1-1000 Ohm ±5% With Smaller Size Available
To wind the alkaline less ceramic core with metal alloy resistance wire and coating with silicon resin which makes wire wound resistor KNP series
Small in size comparatively than other kind resistor
Electrical and Mechanical stability and high reliability

High stable pulse characteristics!
Meet JIS-C-5201 requirements!
Super heat dissipation!
Low noise!
No annual shift on resistance value!
Special tight tolerance are available on request
External dimensions (Unit:mm)
P type
The 5th color band; KNP type in ‘Black’, NKNP type in ‘Green’
| Type | Dimensions | |||||
|
Normal Size |
Small Size |
I±2.0 | L±1.0 | ψD | ψd±0.05 | H±2.0 |
|
KNP1/2W, NKNP1/2W |
KNP1WS, NKNP1WS |
60 | 9.0 | 3.2±0.5 | 0.50 | 28 |
|
KNP1W, NKNP1W |
KNP2WS,NKNP2WS | 60 | 11.5 | 4.5±1.0 | 0.68 | 25 |
| 73 | 11.5 | 4.5±1.0 | 0.68 | 31 | ||
|
KNP2W, NKNP2W |
KNP3WS,NKNP3WS | 60 | 15.5 | 5.0±1.0 | 0.68 | 23 |
| 81 | 15.5 | 5.0±1.0 | 0.68 | 33 | ||
|
KNP3W, NKNP3W |
KNP5WS, NKNP5WS |
94 | 17.5 | 6.0±1.0 | 0.68 | 38 |
| KNP5W,NKNP5W | 94 | 24.5 | 8.0±1.0 | 0.68 | 35 | |
Axial Lead Taping
Txx Type
| Type |
Taping |
Dimensions | ||||||||||
|
Normal Size |
Small Size |
L | W | P |
L1-L2 Max. |
T |
Z Max. |
R Max. |
t Max. |
e Max. |
S Max. |
|
| KNP 1/2W | KNP 1WS | T52 | 9.0±1.0 | 52±1.0 | 5±0.5 | 1.0 | 6±0.5 | 1.2 | 0 | 3.0 | 0.6 | 0.5 |
| KNP 1W | KNP 2WS | T52 | 11.5±1.0 | 52±1.0 | 5±0.5 | 1.0 | 6±0.5 | 1.2 | 0 | 3.0 | 0.6 | 0.5 |
| T66 | 11.5±1.0 | 66±1.0 | 5±0.5 | 1.0 | 6±0.5 | 1.2 | 0 | 3.0 | 0.6 | 0.5 | ||
| KNP2W | KNP 3WS | T52 | 15.5±1.0 | 52±1.0 | 10±0.5 | 1.0 | 6±0.5 | 1.2 | 0 | 3.0 | 0.6 | 0.5 |
| T73 | 15.5±1.0 | 73±1.0 | 10±0.5 | 1.0 | 6±0.5 | 1.2 | 0 | 3.0 | 0.6 | 0.5 | ||
| KNP3W | KNP5WS | T84 | 17.5±1.5 | 84±1.0 | 10±0.5 | 1.0 | 6±0.5 | 1.2 | 0 | 3.0 | 0.6 | 0.5 |
| KNP5W | T84 | 24.5±1.0 | 84±1.0 | 10±0.5 | 1.0 | 6±0.5 | 1.2 | 0 | 3.0 | 0.6 | 0.5 | |
MB Type &M Type&MK Type
MB
|
Watts |
Dimensions (mm) | ||||||
| D | L | P±1.0 | H1±1.0 | H2±0.5 | t±0.15 | qMax | |
| 1/2w,1ws | 3.2±0.5 | 9.0±1.0 | 12.5/15 | 10.5 | 4.5 | 1.2 | 3 |
| 1w,2ws | 4.5±1.0 | 11.5±1.0 | 15 | 10.5 | 4.5 | 1.25 | 3 |
| 2w,3ws | 5.0±1.0 | 15.5±1.0 | 20 | 10.5 | 4.5 | 1.25 | 3 |
| 3W5WS | 6.0±1.0 | 17.5±1.0 | 25 | 10.5 | 4.5 | 1.25 | 3 |
| 5W | 8.0±1.0 | 24.5±1.0 | 30 | 10.5 | 4.5 | 1.25 | 3 |
M
|
Watts |
Dimensions (mm) | |||
| ΦD | L | P±1.0 | H±1.0 | |
| 1/2w,1ws | 3.5±0.5 | 9.0±1.0 | 12.5/15 | 10 |
| 1w,2ws | 4.5±1.0 | 11.5±1.0 | 15 | 10 |
| 2w,3ws | 5.0±1.0 | 15.5±1.0 | 20 | 10 |
| 3w | 6.0±1.0 | 17.5±1.0 | 25 | 10 |
| 5w | 8.0±1.0 | 24.5±1.0 | 30 | 10 |
MK
|
Watts |
Dimensions (mm) | ||||
| D | L | P±1.0 | H±1.0 | H1±1.0 | |
| 1/2w,1ws | 3.2±0.5 | 9.0±1.0 | 12.5 | 10 | 4.5 |
| 1w,2ws | 4.5±1.0 | 11.5±1.0 | 15 | 10 | 4.5 |
| 2w,3ws | 5.0±1.0 | 15.5±1.0 | 20 | 10 | 4.5 |
| 3W5WS | 6.0±1.0 | 17.5±1.0 | 25 | 10 | 4.5 |
F Type &FK2Type&FKK Type
F
|
Watts |
Dimensions (mm) | ||||
| ΦD | L | P±2.0 | E Max | H±1.0 | |
| 1/2w,1ws | 3.2±0.5 | 9.0±1.0 | 6 | 3.5 | 5-8 |
| 1w,2ws | 4.5±1.0 | 11.5±1.0 | 8 | 3.5 | 5-8 |
| 2w,3ws | 5.0±1.0 | 15.5±1.0 | 8 | 3.5 | 5-8 |
| 3w | 6.0±1.0 | 17.5±1.0 | 8 | 3.5 | 5-8 |
FK2
|
Watts |
Dimensions (mm) | ||||
| ΦD | L | P±2.0 | E Max | H±1.0 | |
| 1/2w,1ws | 3.2±0.5 | 9.0±1.0 | 6 | 3.5 | 5-8 |
| 1w,2ws | 4.5±1.0 | 11.5±1.0 | 8 | 3.5 | 5-8 |
| 2w,3ws | 5.0±1.0 | 15.5±1.0 | 8 | 3.5 | 5-8 |
| 3w | 6.0±1.0 | 17.5±1.0 | 8 | 3.5 | 5-8 |
FKK
|
Watts |
Dimensions(mm) | |||||
| ΦD | L | P±1.0 | E Max | H1±1.0 | H2±1.0 | |
| 1/2w,1ws | 3.2±0.5 | 9.0±1.0 | 5-7 | 3.5 | 8 | 4.5 |
| 1w,2ws | 4.5±1.0 | 11.5±1.0 | 5-9 | 3.5 | 8 | 4.5 |
| 2w,3ws | 5.0±1.0 | 15.5±1.0 | 5-9 | 3.5 | 8 | 4.5 |
| 3w | 6.0±1.0 | 17.5±1.0 | 5-10 | 3.5 | 8 | 4.5 |
Tape in box packing (Ammo packing) Packing box size and quantity
| Type |
Form |
Quantity |
Dimensions (mm) | |||
|
Normal Size |
Small Size |
L | W | H | ||
|
KNP1/2W, NKNP1/2W |
KNP1WS, NKNP1WS |
T52 | 2000 PCS | 260 | 80 | 85 |
|
KNP1W, NKNP1W |
KNP2WS, NKNP2WS |
T52 | 1000 PCS | 260 | 80 | 85 |
| T67 | 1000 PCS | 260 | 85 | 92 | ||
|
KNP2W, NKNP2W |
KNP3WS, NKNP3WS |
T52 | 1000 PCS | 260 | 80 | 100 |
| T73 | 1000 PCS | 260 | 95 | 92 | ||
|
KNP3W, NKNP3W |
KNP5WS, NKNP5WS |
T84 | 500PCS | 260 | 110 | 75 |
| KNP5W,NKNP5WS | T84 | 250PCS | 260 | 110 | 75 | |
Bulk
| Type |
Form |
Quantity |
Dimensions (mm) | |||
|
Normal Size |
Small Size |
L | W | H | ||
|
KNP1/2W, NKNP1/2W |
KNP1WS, NKNP1WS |
P | 5000 PCS | 240 | 140 | 76 |
| Moulding | 5000 PCS | 240 | 140 | 76 | ||
|
KNP1W, NKNP1W |
KNP2WS, NKNP2WS |
P | 2000 PCS | 240 | 140 | 76 |
| Moulding | 2000 PCS | 240 | 140 | 76 | ||
|
KNP2W, NKNP2W |
KNP3WS, NKNP3WS |
P | 2000 PCS | 240 | 140 | 76 |
| Moulding | 2000 PCS | 240 | 140 | 76 | ||
| KNP3W,NKNP3W |
KNP5WS, NKNP5WS |
P | 100PCS | 240 | 140 | 76 |
| Moulding | 250PCS | 240 | 140 | 76 | ||
| KNP5W,NKNP5WS | P | 50PCS | 240 | 140 | 76 | |
| Moulding | 50PCS | 240 | 140 | 76 | ||
Rated power
Rated power is maximum power which can be continuously loaded at specified ambient temperature
70℃,as Table-1;however when the ambient temperature exceeds 70℃
|
Type
|
Rated power
|
Dielectric withstanding voltage |
KNP Resistance Range(Ω) |
NKNP Resistance Range(Ω) |
|
| Normal size |
KNP1/2W, NKNP1/2W |
0.5W | 300V | 0.05Ω~1KΩ | 0.1Ω~680Ω |
|
KNP1W, NKNP1W |
1W | 350V | |||
|
KNP2W, NKNP2W |
2W | 350V | |||
|
KNP3W, NKNP3W |
3W | 400V | |||
|
KNP5W, NKNP5W |
5W | 400V | |||
| Small size |
KNP1WS, NKNP1WS |
1W | 300V | 0.05Ω~1KΩ | 0.1Ω~680Ω |
|
KNP2WS, NKNP2WS |
2W | 350V | |||
|
KNP3WS, NKNP3WS |
3W | 350V | |||
|
KNP5WS, NKNP5WS |
5W | 400V | |||
Color Code
| Color |
1st figure |
2nd figure |
Multiplier |
Tolerance |
Distinguish |
|
| Black | 0 | 0 | 100 |
KNP type in ‘Black’, NKNP type in ‘Green’. |
||
| Brown | 1 | 1 | 101 | ±1%(F) | ||
| Red | 2 | 2 | 102 | ±2%(G) | ||
| Orange | 3 | 3 | 103 | |||
| Yellow | 4 | 4 | 104 | |||
| Green | 5 | 5 | 105 | |||
| Blue | 6 | 6 | 106 | |||
| Violet | 7 | 7 | 107 | |||
| Gray | 8 | 8 | ||||
| White | 9 | 9 | ||||
| Gold | 10-1 | ±5%(J) | ||||
| Silver | 10-2 | ±10%(K) | ||||
| Plain | ||||||
Construction
|
NO |
Item |
Material |
| 1 |
Ceramic core |
High alumina ceramic is used. |
| 2 |
Resistor element |
The resistor element shall consist of Resistance wire(Exemple:CN49W Φ1.0mm) . |
| 3 |
Terminal |
Tinned iron cap. |
| 4 |
Connection |
The lead wire,which is plated with solder,shall be mounted to the caps by welding process. |
| 5 |
Lead wire |
Soldered or tinned annealed wire. |
| 6 |
Finishing painting |
Silicon resin is used. Accord with UL-94V-0 Nonflammable specification. |
| 7 |
Indication |
Color code. |
Characteristics
|
Item |
Performance |
Test methods(Conform to JIS C 5202) |
|
Temperature |
±350PPM/℃ |
Comply with 5.2 R1:Resistance value at room temp.plus 100℃(T1) |
|
|
Within ±(2%+0.05Ω). No evidence of mechanical damage. |
Comply with 5.5 But not to exceed maximum overload voltage. |
|
Item |
Performance |
Test methods(Conform to JIS C 5202) |
|||||||||
|
Insulation |
104MΩ or more. |
Comply with 5.6 Resistor shall be tested at DC 500V for 60 seconds. |
|||||||||
|
Dielectric |
No evidence of flashover mechanical damage,arcing or insulation breakdown. |
Comply with 5.7 Resistor shall be tested at AC potential respectively for 60 seconds.(See table-1) |
|||||||||
|
Pulse overload |
Within ±(2%+0.05Ω) |
Comply with 5.8 Rated voltage X 4 times, 10000 cyc.(1s ON, 25s OFF) But not to exceed maximum pulse voltage.(See table-1) |
|||||||||
|
Terminal strength |
No evidence of mechanical damage. |
Comply with 6.1
Torsion strength:To bend the lead wire at the point of about 6mm~6.5mm from resistor body. about 0.75mm curvature radii to 90°then catch the wire at 1.2±0.4mm apart from the bend point end and turn it ( clockwise ) by 360 degrees perpendicular to the resistor axis at speed of same 5 seconds per turn, and do the same counterclockwise again which constitute a whole turn. Repeat the turn for 2 times without causing any break and looseness. |
|
Item |
Performance |
Test methods(Conform to JIS C 5202) |
|
Resistance to soldering heat |
Within ±(1%+0.05Ω) No evidence of mechanical damage. |
Comply with 6.4 350±10℃, 3±1s After test leave for 0.5h. |
|
Solderability |
Covered with new solder by 95% at least. |
Comply with 6.5 Test temperature of solder:255±5℃ Dipping time in solder:3±1.0 s |
|
Resistance to solvent |
No deterioration of protective coating and markings. |
Comply with 6.9 Specimens shall be immersed in a bath of isoproalcohol completely for 3 minutes with ultrasonic. |
|
Temperature cycle |
Within ±(1%+0.05Ω) No evidence of mechanical damage. |
Comply with 7.4 |
|
Load life in humidity |
Within ±(5%+0.05Ω) |
Comply with 7.9 |
|
Load life |
Within ±(5%+0.05Ω) |
Comply with 7.10 |
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