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MYL1type varistor
(Varistor Type MYL1)
MYL1 type varistor is a semiconductor ceramic element made of zinc oxide as the main raw material, and its resistance value changes nonlinearly with the change of applied voltage. It has the characteristics of small size and large flow rate.
1,Features
Varistor voltage(200V-1800V)
Excellent non-linearity coefficient
Great with standing surge current
Fast response time
2,Recommended Applications
Protection of semiconductor
Protection of railway automatic signals
Surge protection of communication,measuring or controller instrument
Transient voltage surge suppressor units
Surge protection of vacuum switches
3,Explanation of Part Numbers
| SPECIFCATION | NO. | ||||||||
PART NO. | 32D431K | PAGE 1 OF 2 | |||||||
| DATE:September 04, 2023 | |||||||||
| 1.OUTLINE | |||||||||
| 1.1 | APPEARANCE | Without Any Crack, Marking Should Be Clear | |||||||
| 1.2 | DIMENSIONS | DIMENSIONS (mm) | |||||||
 | D (max) | 34.0 | |||||||
| H (max) | 38.0 | ||||||||
| T(m±1.5) | 5.5 | ||||||||
| d(±0.02) | 1.2 | ||||||||
| E(±1.0) | 25.0 | ||||||||
| 2.ELETRICAL PARAMETER | |||||||||
| 2.1 | Max. Allowable Voltage | AC: 275(V) | At 1 mA DC | ||||||
| DC: 350(V) | |||||||||
| 2.2 | Varistor Voltage | 387-473(V) | VO.1 mA□ V1.0 mA▓ | ||||||
| 2.3 | Rated Wattage | 1.5(W) | |||||||
| 2.4 | Max. Clamping Voltage | IP: 200(A) | Test Current Waveform 8/20μs | ||||||
| VC: 710 (V) | |||||||||
| 2.5 | Withstanding Surge Current | 1time:25000(A) | Test Current Waveform 8/20μs | ||||||
| 2time:20000(A) | |||||||||
| 2.6 | Max. Energy | 430(J) | Test Current Waveform 10/1000μs | ||||||
| 2.7 | Typical Capacitance | 3100(pf) | @1KHz | ||||||
| 2.8 | Leakage Current | ≦200(μA) | At 80% of Varistor Voltage | ||||||
| 2.9 | Nonlinear Exponent(α) | ≧40 |  | ||||||
| 2.10 | Temperature Coefficient Of Varistor Voltage | ≦±0.05%/℃ MAX. |  | ||||||
| 2.11 | Impulse Life | ≦±10%(V1 mA) | Test Current Waveform 8/20μs | ||||||
SPECIFCATION FOR APPROVAL
| SPECIFCATION | NO. | |||||||
PART NO. | 32D431K | PAGE 2 OF 2 | ||||||
| DATE:September 04, 2023 | ||||||||
| 3. Mechanical Requirements | ||||||||
| 3.1 | Tensile of Terminations | No Outstanding Damage | 1Kgf, 10Sec | |||||
| 3.2 | Bending of Terminations | No Outstanding Damage | 0.5Kgs,90°,3Times | |||||
| 3.3 | Vibration | No Outstanding Damage | Freq: 10-55hz Amp: 0.75 mm, 1Min | |||||
| 3.4 | Solderability | Min.95% of The Terminal Should Be Covered With Solder Uniformly | Solder Temp:230±5℃ Immersed Time:2±0.5Sec | |||||
| 3.5 | Resistance of soldering Heat |
≤±5% | Solder Temp:260±5℃ | |||||
| Immersed Time:10±1Sec | ||||||||
| 4．Environmental Requirements | ||||||||
| 4.1 | High Temperature Storage |
≤±5% | Ambient Temp:125±2℃ Duration: 1000h | |||||
| 4.2 | Low Temperature Storage |
≤±5% | Ambient Temp:-40±2℃ Duration: 1000h | |||||
| 4.3 | High Humidity Storage/Damp Heat |
≤±5% | Ambient Temp:40±2℃ 90-95%R.H. Duration: 1000h | |||||
| 4.4 | Temperature Cycle |
≤±5% | Step | Temperature | Period | |||
| 1 | -40℃ | 30min | ||||||
| 2 | Room Temp | 15min | ||||||
| 3 | 125℃ | 30min | ||||||
| 4 | Room Temp | 15min | ||||||
| 4.5 | High Temperature Load |
≤±10% | Ambient Temp:85±2℃ Duration:1000h Load:Max Allowable Voltage | |||||
| 4.6 | High Humidity load |
≤±10% | Ambient Temp:125±2℃ Duration:1000h Load:Max Allowable Voltage | |||||
| 4.7 | Operating Temperature Range | -40℃～+85℃ | -40℃～+85℃ | |||||
| 4.8 | Storage Temperature Range | -40℃～+125℃ | -40℃～+125℃ | |||||
5,Electrical Characteristics
Type | Varistor Voltage |
Max. Allowable |
Max. Clamping Voltage/test Current | Energy (2ms) |
(8/20μs) |
Capacitance (Reference) (1kHz) | |||
| V | ACrms(V) | DC(V) | Vc(v) | lp(A) | J | 1time(A) | 2times(A) | PF | |
| 32D431K | 387~473 | 275 | 350 | 710 | 200 | 430 | 25000 | 20000 | 3100 |
Operating Temperature Range:-40 to 85℃
Storage Temperature Range):-40 to 125℃
Low Leakage Current 32D 40D MOV Metal Oxide Varistor Wide Working Voltage Range
SPD varistor manufacturers believe that the application of varistors can significantly protect low-voltage electrical equipment. Generally speaking, in order to prevent lightning strikes, we need to take various lightning protection measures according to the specifications, and then install varistors at the user's power supply end to realize the resistance adjustment of the power supply end. If there is a large voltage at the power supply terminal, the varistor will be broken down to ensure that the voltage at both ends remains at a normal value, thereby protecting the electrical equipment. In addition, the phase line or neutral line is used to introduce lightning overvoltage, which can be broken down by two varistors, and the voltage at both ends will remain at a normal value. At the same time, the fuse will be blown to ensure that no continuous current flows through the varistor, thereby protecting the varistor.
Basic properties of varistors:
(1) Protection characteristics. When the impact strength of the
impact source (or the impact current Isp=Usp/Zs) does not exceed
the specified value, the limited voltage of the varistor is not
allowed to exceed the impact withstand voltage (Urp) that the
protected object can withstand. .
(2) Impact resistance characteristics, that is, the varistor itself
should be able to withstand the specified impact current, impact
energy, and the average power when multiple impacts occur one after
another.
(3) There are two life characteristics. One is the continuous
working voltage life, that is, the varistor can meet the specified
working time (hours) under the specified ambient temperature and
system voltage conditions. The second is the impact life, that is,
the number of times it can reliably withstand the specified impact.
Model Number | 32D 2011K 390K 431K 470K 471K 511K 561K 680K 681K 821K 102K
112K 122K 142K |
Package | Varistors |
D/C | Newest |
Condition | New & Original |
Lead time | Within 1 day |
Unit Price | Contact us for latest price |
More details | Please contact us |
Applications
Transistor, diode, IC, thyristor or triac semiconductor protection
Surge protection in consumer electronics Surge protection in industrial electronics
Surge protection in electronic home appliances, gas and petroleum appliances
Relay and electromagnetic valve surge absorption
Competitive Advantage:
Specifications:
Production Process / Quality Control
Application
1. Varistor voltage: refers to the voltage value across the
varistor at a specified temperature and DC (generally 1mA or
0.1mA). Recorded as V1mA or V0.1mAo
2. Maximum continuous voltage: refers to the maximum effective
value of sinusoidal AC voltage or the maximum DC voltage value that
can be continuously applied to both ends of the varistor for a long
time under the specified ambient temperature
3. Limiting voltage: refers to the maximum peak voltage at both
ends of the varistor when a specified surge current (8,20μs) passes
through it.
4. Rated power: refers to the maximum average impact power that can
be applied to the varistor under the specified ambient temperature.
5. Maximum energy: the maximum impact energy that can be applied to
the varistor under the condition that the varistor voltage does not
change more than ±10% and the impulse current waveform is 10,
1000μs or 2ms.
6. Current capacity (maximum inrush current)
