PTC Thermistor Alloy Wires PTC 4500

• Type: Constantan-Type
• Powder: Not Powder
• Name: PTC Thermistor Alloy Wires
• Main Composition: Fe S Ni C P
• Diameter: 0.05-0.25mm
• Resistivity: 0.19-0.43
• Model NO.: chenxin-128
• Product: P-4500p-4000p-3800p-3500p-300 P-2500
• PTC Resistance Wire Feather: Soft Wire or Hard Wire
• PTC Resistance Wire Surface Trea: Bright Annealing
• PTC Resistance Wire Coil Bobbins: K80 / K100 or K125 According to IEC-2-2
• PTC Resistance Wire Package: on Spool/Reel or on Coil
• Transport Package: on Spool/Reel or on Coil
• Specification: 0.05-0.25
• Trademark: REOU
• Origin: China
• HS Code: 85168360
• Production Capacity: 200000kg/Mouth

Product Description

 
PTC  Alloy  wire  has  medium  resistivity  and  high  positive  temerature  coefficient  of  esistance .
It  has  widely  used  in  various  heaters.  It  can  automatically  control  temperature  and  sdjust  power  by  keeping  constant  current  and  limiting  current.
 
 
Chemical composition:

Name	Code	Main Composition
		Fe	S	Ni	C	P	Standard
Temperature Sensitive Resistance alloy wire	PTC	Bal.	≤0.01	77~82	≤ 0.05	≤0.01	Q/320421PTC4500-2008

 
Specifications  and   tolerances

Diameter	0.05	0.10	0.15	0.16	0.17	0.18	0.19	0.20	0.21	0.22	0.23	0.24	0.25
Tolerance	± 0.003		± 0.005					± 0.008

 
Temp.Coeff.Of resistance(20ºC)

Type	P-4500	P-4000	P-3800	P-3500	P-3000	P-2500
0~150ºCaverage × 10%%Z	4500	≥4000	≥3800	≥3500	≥3000	≥2500

 
Resistivity (20ºC)(μΩ.m)

Type	P-4500	P-4000	P-3800	P-3500	P-3000	P-2500
at20ºCresistance ±5%μΩ.m	0.19	0.25	0.27	0.36	0.40	0.43

 
The table for resistance

Product	±0.5%Ω/m	Dia.(mm)and cross-sectional area (mm²)
		0.05	0.10	0.15	0.16	0.17	0.18	0.19	0.20	0.21	0.22	0.23	0.24	0.25
		0.00196	0.00785	0.00176	0.0201	0.0227	0.0255	0.0284	0.0314	0.0346	0.0380	0.0415	0.0452	0.0491
P-4500		96.93	24.20	10.79	9.45	8.37	7.45	6.69	6.05	5.49	5.00	4.58	4.20	3.87
P-4000		127.55	31.84	14.20	12.43	11.014	9.80	8.80	7.69	7.22	6.58	6.02	5.53	5.09
P-3800		137.75	34.39	15.34	13.43	11.89	10.59	9.51	8.60	7.80	7.11	6.51	5.97	5.50
P-3500		183.67	45.85	20.45	17.91	15.86	14.12	12.68	11.46	10.40	9.47	8.67	7.96	7.33
P-3000		204.08	50.95	22.72	19.90	17.62	15.68	14.08	12.73	11.56	10.52	9.63	8.84	8.14
P-2500		219.38	54.77	24.43	21.39	18.94	16.86	15.14	13.69	12.42	11.31	10.36	9.51	8.75

 
The weight per spool

specification (mm)		≤0.05	>0.05~0.10	>0.10~0.15	>0.15~0.25
Weight per spool	Standard weight	20	30	100	300
	Lesser weight	10	20	50	100

 
Elongation(%)

Standard	≤0.05	>0.05~0.10	>0.10~0.15	>0.15~0.25
Alloy wire (soft)elongation	10%	12%	16%	20%