Walter Electronic Plastic Square Fuse 2020 (8 * 5 * 4) 250V Series Model Selection List and Current Purchase Address: "="" target="_blank" rel="noopener">hnstshop.com/details/WALTER-2020.html" target="_blank">Click on the image to enter
Walter Electronic Plastic Square Fuse 2020 (8 * 5 * 4) 250V series is a general-purpose fuse suitable for general electronic circuits.
Product code: Walter 2010 Plastic Square Fuse 20210 250V Series Slow Break Product code is as follows:
| serial number | delay | Rated current | rated voltage | Safety regulations symbols |
| 2020 | T | 6.3A | 250V | cULs/VDE |
Rated current and rated voltage range: Walter Ward plastic square fuse 2020-250V series current and voltage range：
Rated current：100mA~10A
rated voltage：250V AC
Product identification: Walter Electronic Plastic Square Fuse 2020-250V Slow Break Series has the following identification
1. Manufacturer and product name identification: logo+2020
2. Electrical characteristics: T (delay fuse)
3. Rated current: A/mA
4. Rated voltage: 250
5. Safety certification symbols: UL, CCC, VDE, PSE
Appearance and shape:
1. Appearance: There should be no damage or obvious bruises
2. Shape: Small fuse with pins
Engineering drawings and structure: Walter Huade Electronic Plastic Fuse 2020-250V Slow Break Series engineering structure drawings are as follows:
1. Product engineering drawings:
2.product mix：
| element | material quality | number |
| body | Heat resistant plastic:UL-94-V0 | 1 |
| terminal | Tinned Copper | 2 |
Product features: Walter Electronic Plastic Square Fuse 2020-250V Slow Break Type Series product features are as follows:
1. Pin tensile strength: 10 Newton 10 ± 1s
2. Pin thrust strength: 2 Newton 10 ± 1s
3. Solderability: Wave soldering at 260 ℃, ≤ 3s; Soldering iron: 350 ± 10 ℃, ≤ 1s
4. Welding heat resistance: Wave soldering: 260 ± 10 ℃, 10s; Soldering iron: 350 ℃, 3s
Electrical characteristics: Walter Huade electronic plastic square fuse 2020-250V slow break series electrical characteristics are as follows:
1. Fusing current characteristics:
| RATED CURRENT | 2.1 In | 2.75 In | 4 In | 10 In | |||
| Max. | Min | Max. | Min | Max. | Min | Max. | |
| 100mA~10A | 2min | 400ms | 10s | 150ms | 10s | 20ms | 150ms |
2.Product specifications：
| Rated current | Cold Resistance | Maximum voltage drop(mV) | Maximum power consumption(mW) | I²T(A2 Sec@10In) |
| 100mA | 2.75Ω | 350 | 170 | 0.11 |
| 125mA | 1.83Ω | 300 | 180 | 0.11 |
160mA | 1.15Ω | 280 | 190 | 0.17 |
200mA | 0.80Ω | 260 | 200 | 0.30 |
250mA | 0.71Ω | 240 | 220 | 0.63 |
315mA | 0.48Ω | 220 | 250 | 1.0 |
400mA | 0.33Ω | 200 | 280 | 1.5 |
500mA | 0.24Ω | 190 | 310 | 2.9 |
630mA | 0.20Ω | 180 | 360 | 4.3 |
800mA | 0.13Ω | 160 | 430 | 6.5 |
1A | 94.00mΩ | 140 | 500 | 11 |
1.25A | 67.50mΩ | 130 | 600 | 15 |
1.6A | 46.05mΩ | 120 | 730 | 26 |
2A | 33.80mΩ | 100 | 870 | 37 |
2.5A | 23.80mΩ | 100 | 1000 | 61 |
3.15A | 17.30mΩ | 100 | 1200 | 98 |
4A | 12.70mΩ | 100 | 1400 | 136 |
5A | 10.10mΩ | 100 | 1500 | 212 |
6.3A | 7.50mΩ | 100 | 1650 | 321 |
8A | 5.50mΩ | 80 | 1800 | 360 |
10A | 4.50mΩ | 75 | 2000 | 405 |
3.Breaking Capacity：
| UL | 100mA~10A | 50A/250V AC |
| VDE | 100mA~6.3A | 50A/250V AC |
| TUV | 8A~10A | 100A/250V AC |
| CQC | 1A~5A | 50A/250V AC |
6.3A~10A | 100A/250V AC | |
| PSE | 1A~10A | 100A/250V AC |
| KC | 100mA~6.3A | 50A/250V AC |
4.Time current curve：
Environmental characteristics: Walter electronic plastic square fuse 2020-250V slow break series environmental characteristics are as follows:
1. Operating temperature range: -55~125 ℃. (Note: If it exceeds the range of 25 ± 5 ℃, the impact of environmental temperature on the fuse should be considered when selecting the fuse specification. Please refer to the temperature curve:
）
2. Storage conditions:
It can be stored for 3 years under sealed conditions with a temperature of+10~60 ℃ and a relative humidity of 75% or less.
It can be stored for up to 30 days under non exposed conditions with a temperature of+10~60 ℃ and a relative humidity of 95%.
Installation method and conditions:
1. It is recommended to install as shown in the following figure and meet the required dimensions.
2. Suggest customers to adjust the welding parameters:
Wave soldering parameters:
Tin furnace temperature: 260 ℃ Max
Welding time: 2-5s
Manual welding parameters:
Solder iron temperature: 350 ± 5 ℃
Welding time: 1-2 seconds Max
Safety Specification Certification: Walter Electronic Plastic Square Fuse 2020-250V Slow Break Series Safety Specification Certification is as follows:
| UL | E56092 (100mA~10A) |
VDE | 40018781 (100mA~6.3A) |
TUV | J50361151 (8A~10A) |
CQC | CQC20012271742 (1A~10A) |
PSE | JET2179-31007-1003 (1A~5A)、JET2179-31007-1004 (6.3A~10A) |
KC | SU05015-12004 (100mA)、SU05015-12005 (125mA~800mA) SU05015-12001 (1A~2.5A)、SU05015-12003 (3.15A~6.3A) |
