NF20 PTC Thermistor Nickel Iron resistance Alloy Wires PTC 4500

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, BS, ASTM, AISI
• Model NO.: NF20
• Alloy: Alloy
• Type: Nickel Wire
• Powder: Not Powder
• Material: Nickel Iron alloy wire
• surface: Bright
• diameter: 0.025-5.0mm
• sample: accepted sample order
• Resistivity: 0.13-0.60
• shape: round wire, flat wire
• TCR: 2500-4600
• Transport Package: Spool+ Carton+Wooden Case
• Specification: 0.025-5.0mm
• Trademark: TANKII
• Origin: Shanghai, China
• HS Code: 75052200
• Production Capacity: 2000 Ton/Year

Product Description

PTC  Alloy resistance  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	JB/T12515-2015

 
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	PTC-4500	PTC-4000	PTC-3800	PTC-3400	PTC-3000	PTC-2500
0~150ºCaverage, PPM	4500	4000	3800	3400	3000	2500

 
Resistivity (20ºC)(μΩ.m)

Type	PTC-4500	PTC-4000	PTC-3800	PTC-3400	PTC-3000	PTC-2500
at20ºCresistance ±5%μΩ.m	0.20	0.38	0.40	0.43	0.52	0.6

 
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
PTC-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
PTC-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
PTC-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
PTC-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
PTC-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
PTC-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%