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WMZ11A PTC thermistor Parameters Table

1. Scope of application:
WMZ11A PTC thermistor is used in various fluorescent electronic ballasts and electronic energy-saving lamps without changing the wiring. The appropriate thermistor can be directly connected across the resonant capacitor of the lamp tube, and the hard start of the electronic ballast and the electronic energy-saving lamp can be changed to be a warm-up start. Allowing the filament to warm up for 0.4 to 2 seconds can extend the life of the lamp by more than three times.
2. Features:
WMZ11A PTC thermistor is made of PTC characteristics of materials. It has small volume, high withstand voltage, long life and low power consumption during normal operation.
3. Application principle:
    The WMZ11A PTC thermistor uses the PTC thermistor to achieve the warm-up startup principle as shown on the right: When the switch is just turned on, R t is in the normal temperature state, its resistance value is far lower than the C 2 resistance value, and the current jumps into the high resistance state through the C 1 , R t self-heating temperature exceeding the Curie point temperature T c . Its resistance is much higher than the value of C 2 , and the current forms a loop through C 1 and C 2 to cause LC resonance, which produces a high-voltage lighting lamp.

Shape and size             Application circuit diagram
                Shape and size                               Application circuit diagram
6. Product logo description:
logo description
 
Note: 1 model
2Switching temperature 50-50°C 75-75°C 85-85°C 105-105°C 120-120°C
3 type code
S-Micro-miniature A-Basic HV-High pressure type
4 rated zero power resistance 102-1000Ω 68R-68Ω
5 resistance tolerance
N-±30% V-±25% M-±20% K-±10% X-Other
6 lead shape
U-inner bend S-straight A-axis bend


Type code Dmax Tmax F±1 d±0.05
S 4 4.5 5 0.5
L 5 4.5 5 0.6
A 6 4.5 5 0.6
HV 6 5 5 0.6
B 8 4.5 5 0.6
BHV 8 5 5 0.6


The main technical parameters
Serial number model Rated zero power resistance value (Ω) Withstand voltage (VAC) Maximum repeatable on/off current (mA) Flow resistance (mA) Switching temperature (°C) Dimensions (mm
Dmax Tmax d
01 WMZ11A-50S68RNU 68±30% 360 200 300 50±7 4 4.5 0.5
02 WMZ11A-50S101NU 100±30% 400
03 WMZ11A-50S151NU 150±30% 400
04 WMZ11A-50S221NU 220±30% 500
05 WMZ11A-50S331NU 330±30% 600
06 WMZ11A-50S471NU 470±30% 600
07 WMZ11A-50S681NU 680±30% 600
08 WMZ11A-50S102NU 1000±30% 600
09 WMZ11A-50S152NU 1500±30% 600 140 210
10 WMZ11A-50S222NU 2200±30% 600 90 135
11 WMZ11A-50S332NU 3300±30% 600 60 90
12 WMZ11A-50S472NU 4700±30% 600 40 60
13 WMZ11A-75S68RNU 68±30% 360 200 300 75±7
14 WMZ11A-75S101NU 100±30% 400
15 WMZ11A-75S151NU 150±30% 400
16 WMZ11A-75S221NU 220±30% 500
17 WMZ11A-75S331NU 330±30% 500
18 WMZ11A-75S471NU 470±30% 500
19 WMZ11A-75S681NU 680±30% 600
20 WMZ11A-75S102NU 1000±30% 600
21 WMZ11A-75S152NU 1500±30% 600 140 210
22 WMZ11A-75S222NU 2200±30% 600 90 135
23 WMZ11A-75S332NU 3300±30% 600 60 90
24 WMZ11A-75S472NU 4700±30% 600 40 60
25 WMZ11A-105S68RNU 68±30% 360 180 270 105±7
26 WMZ11A-105S101NU 100±30% 400
27 WMZ11A-105S151NU 150±30% 400
28 WMZ11A-105S221NU 220±30% 400
29 WMZ11A-105S331NU 330±30% 500
30 WMZ11A-105S471NU 470±30% 500
31 WMZ11A-105S681NU 680±30% 600
32 WMZ11A-105S102NU 1000±30% 600
33 WMZ11A-105S152NU 1500±30% 600 140 210
34 WMZ11A-105S222NU 2200±30% 600 90 135
35 WMZ11A-120S68RNU 68±30% 360 180
 
270 120±7
36 WMZ11A-120S101NU 100±30% 400
37 WMZ11A-120S151NU 150±30% 400
38 WMZ11A-120S221NU 220±30% 400
39 WMZ11A-120S331NU 330±30% 500
40 WMZ11A-120S471NU 470±30% 500
41 WMZ11A-120S681NU 680±30% 600
42 WMZ11A-120S102NU 1000±30% 600

 


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