MZ4 500-800RMN265V Instrument PTC Surge Current Thermistor For Control Panel

1,Symbol for the products

1-1,Symbol for the products   MZ4

Note   MZ4  Type Number

2,外形规格Specifications of Appearance

 

 

 

 

2-1,Dimensions (mm)

Number	Name	Technical Requirements	Leads
D	Diameter of Resistance	4.5max	□ Straight 　   □ Axis Formed　   ■In-Forming
T	Thickness of Resistance	5.0max
L	Length of fuse	Min20
W	Distance between fuses	5.0±0.5
d	Diameter of fuse	0.5±0.05

2-2.Coating

Coating	Material	Color
□No coating ■Coating	□PF resin ■Silicon	□Yellow ■Green

3,Electric Performance

Number	Items	Technical Requirements	Test Conditions
3-1	Resistant for Zero Rated Power	300-500Ω	Atmosphere Temperature:25±2℃ Accuracy of the Test:±0.5%
3-2	Over Voltage Withstanding	800V ΔR/Rn≤20%	Starting Current:≥200mA, Starting Voltage:220VAC,hold on for 7s,and then change to high voltage800VAC,for 6s.the is shown as follows: Stay under the conditions of regular temperature and humidity for 4-5 hours, and then check the Rn again.
3-3	Over Current withstanding	≥200mA ΔR/Rn≤20%	Starting Current:≥200mA,Voltage 220VAC, switch on the circuit for 1 minute after every 5minutes, switch-off, and repeat this operation for 20 times. Put it under the conditions of regular temperature and humidity for 4-5 hours and then check the Rn again
3-5	Curie Temperature	75℃±7	Check the temperature at 2 times Rn.

 

 

4,Other Performance

Number	Items	Technical Requirements	Test Conditions
4-1	Appearance	No noticeable defect, such as, bubbles and micro holes, etc; NO visible damage that may reduce its performance; the symbol is clear	Visual Check
4-2	Welding	It's tinned evenly and with smooth welds, and the tinned area 95%	Do the test according GB2423-28 of Ta, put welding aid on the faze end and soaked it into the 230℃ tin solution with only 5mm distance to the PTC body above the solution, and maintain for 3-5s.
4-3	Heat Resistance	Check the variation rate of resistance before and after the test ΔR/Rn≤20%	Do the test according to GB2423-28 of Tb stsy under the regular temperature and humidity for 4-5 hours, and then check the Rn again.Dipping terminals to a depth of 15mm in a soldering bath of 255℃±10℃,and to the place of 6mm far from PTC boby for 3±0.5s
4-4	Intensity at Fuse end	Check the variation rate of resistance before and after the test ΔR/Rn≤20%   No break out	Do the test according to GB2423-29 of U Test Ua: Fasten the body and apply a force gradually to each lead until 10N and then keep for 10sec.hold the body and apply a force to each lead until 90° slowly at 5N in the direction of lead axis and then keey for 10sec,and do this in the opposite direction repeat for other terminal.

 

High Reliability Ceramic PTC Thermistor Strong Ability To Suppress Inrush Current
 

Organizational structure and functional principle of PTC thermistor
 

Ceramic materials are usually used as excellent insulators with high resistance, while ceramic PTC thermistors are based on barium titanate and doped with other polycrystalline ceramic materials, which have low resistance and semiconducting properties. It is achieved by purposely doping a material with a higher chemical valence as the lattice element of the crystal: in the crystal lattice, part of the barium ions or titanate ions are replaced by ions with higher valence, thus obtaining a certain amount Free electrons that produce conductivity. For the PTC thermistor effect, that is, the reason for the step increase in the resistance value is that the material structure is composed of many small crystallites, and a potential is formed on the interface of the grains, the so-called grain boundary (grain boundary). Barriers, which prevent electrons from crossing into adjacent regions, thus producing high resistance, this effect is counteracted at low temperatures: high permittivity and spontaneous polarization at grain boundaries prevent The formation of a potential barrier allows electrons to flow freely. And this effect at high temperature, the dielectric constant and polarization intensity are greatly reduced, resulting in a substantial increase in potential barrier and resistance, showing a strong PTC effect.
 

The characteristics of PTC thermistor are:
 

1. Power saving
The energy input of the thermistor adopts the proportional type, which has the current limiting characteristic of the protection circuit, and saves power compared with the switching energy input of heating elements such as nickel-chromium wires.
2. Long service life
The PTC thermistor itself is an oxide, there is no high-temperature oxidation defect of the nickel-chromium element wire, and there is no fragile situation of the infrared diode, the service life is long, and the service life of the porous type is longer than that of the non-porous type
3. It has the special performance of constant temperature, adjustment and temperature control
When AC or DC voltage is given to the thermistor element to heat up, below the Curie temperature, the resistivity is relatively low; if it is higher than the Curie temperature, the resistivity suddenly increases, so that the thermistor current is reduced to a fixed value, reaching Automatic constant temperature, temperature adjustment purpose
4. Non-combustible, safe and stable
When the PTC thermistor is hot, it does not glow red, has no flame, and is difficult to ignite
When the temperature near the thermistor exceeds the limit value, its power is automatically reduced to a stable value, and no burning accidents will occur
5. Wide operating voltage range
PTC thermistor can be used normally under low voltage 6 to 36V and high voltage 110-240V
6. Simple structure
The thermistor itself is to be automatically temperature controlled, and no other automatic temperature control circuit assembly is required

 

Competitive Advantage:

 

1, Convenient installment and small size

2, No requirement for reseting after over-heat protection

3, Quick action

4, We can offer equivalent PTC thermistor of Thinking & TDK

5, Long life working time

6, Good stability

7, Wide range protection temperature: 30~150°C

 

Common models of LKMZB series overcurrent protection PTC thermistor

Model	Curie	Resistance	Action	No action	Maximum	Naximum	Dimensions
	temperature	typical value	electric current	electric current	electric current	Work
			@25℃	@60℃	@25℃	Voltage
	Tc(℃)	Rn(Ω)	It(mA)	Ih(mA)	Imax(A)	Vmax(V)	Dmax	Hmax
LKMZB-03I202-302R	85±7	2500	16	3	0.2	420	4.0	5
LKMZB-03I102-202R	85±7	1500	18	4	0.2	420	4.0	5
LKMZB04I801-122R	85±7	1000	25	6	0.2	420	4.5	5
LKMZB-04I501-801R	85±7	650	28	7	0.2	420	4.5	5
LKMZB-04I301-501R	85±7	400	32	8	0.2	420	4.5	5
LKMZB-04M101-202R	105±7	1500	25	6	0.2	420	4.5	5
LKMZB-04M801-122R	105±7	1000	28	8	0.2	420	4.5	5
LKMZB-04M501-801R	105±7	650	30	10	0.2	420	4.5	5
LKMZB-06S102-202R	115±7	1500	30	10	0.3	420	6.5	5
LKMZB-06S801-122R	115±7	1000	35	12	0.3	420	6.5	5
LKMZB-06S601-901R	115±7	750	42	14	0.3	420	6.5	5
LKMZB-06S501-801R	115±7	650	45	15	0.3	420	6.5	5
LKMZB-06S401-601R	115±7	500	50	16	0.3	420	6.5	5
LKMZB-06S201-401R	115±7	300	60	20	0.3	420	6.5	5
LKMZB-06S151-251R	115±7	200	75	25	0.3	265	6.5	5
LKMZB-06S101-201R	115±7	150	80	28	0.3	265	6.5	5
LKMZB-06S900-151R	115±7	120	90	30	0.3	265	6.5	5
LKMZB-06M600-100R	105±7	80	100	32	0.3	265	6.5	5
LKMZB-06M400-800R	105±7	60	120	35	0.3	265	6.5	5
LKMZB-08S301-501R	115±7	400	80	20	0.8	420	8	5
LKMZB-08S201-301R	115±7	250	80	25	0.8	420	8	5
LKMZB-08S151-251R	115±7	200	100	28	0.8	420	8	5
LKMZB-08S900-151R	115±7	120	120	35	0.8	420	8	5
LKMZB-08S600-101R	115±7	80	140	40	0.8	420	8	5
LKMZB-08S400-800R	115±7	60	160	50	0.8	265	8	5
LKMZB-08S300-500R	115±7	40	180	60	0.8	265	8	5
LKMZB-10S300-500R	115±7	40	200	70	3	265	9	5
LKMZB-10S200-300R	115±7	25	250	80	3	265	9	5
LKMZB-13S200-300R	115±7	25	300	100	4	265	13	5
LKMZB-13S100-200R	115±7	15	360	120	4	265	13	5
LKMZB-16S200-300R	115±7	25	360	120	8	265	16	5
LKMZB-16S100-200R	115±7	15	420	140	8	265	16	5
LKMZB-16S080-150R	115±7	12	420	160	8	265	16	5

   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: Various types of products can be customized according to customer requirements, and the maximum non-operating current value can reach 400mA@60℃.

 

 

APPLICATION:
 

1.	switch power supply
2.	transformer, adaptor, charger
3.	electric coils, control panel
4.	house appliance(A/C,micro oven)
5.	electronic ciruit
6.	instrument

h

Contact Details:

Nancy Huang

Email: huangju@lk-ptc.

Tel/Whatsapp: +86 13423305709

Wechat: LinKun＿Nancy2013

QQ: 1078049901

 

Competitive Advantage:
 

1. Factory supply directly

2. Completed certificates such as UL,VDE,SGS,etc and high quality available

3. Quick delivery

4. Best after-sales services

5. OEM & ODM available