高精密金屬膜電阻器
PMF(1/4W)
HIGH PRECISION METAL FILM RESISTOR
STANDARD TYPE PMF(1/4W)
品名（PART NUMBER）
依據(jù)其種類，分別注明額定功率、容許差率、公稱電阻值和形狀。
ACCORDING TO THE TYPES OF RESISTORS, THE POWER RATED, RESISTANCE TOLERANCE, RESISTANCE VALUE, SHAPES.
例(e.g)：
PMF 1/4W B(±0.1%) 140K T
種類TYPE 額定功率RATED POWER 容許差TOLERANCE 公稱值RESISTANCE 形狀FORMING
電力特性(POWER CHARACTERISTIC)
額定功率 POWER 項(xiàng)目 RATED ITEM | 1/4W | |
使用電壓 MAX WORKING VOLTAGE |
P.R或250V取較小者 P.R Or 250V Get the lower voltage） | |
過負(fù)荷電壓 MAX OVERLOAD VOLTAGE |
2.5X P.R或500V取較小者 2.5X P.R Or 500V（Get the lower voltage） | |
斷續(xù)過負(fù)荷 MAX INTERMITTENCE OVER LOAD VOLTAGE |
4X P.R或750V取較小者 4X P.R Or 750V（Get the lower voltage） | |
耐電壓 DIELECTRIC WITHSTANDING VOLTAGE | 500V (AC) | |
阻抗誤差值 RESISTANCE TOLERANCE | B±0.1% | |
阻抗值范圍 RESISTANCE RANGE（Ω） | MIN | 10R |
MAX | 470K | |
項(xiàng)目 CHARACTERISTICS | 規(guī)格值 SPECIFICATIONS | 測試方法 TEST METHODS JIS 5202 |
溫度系數(shù) TEMPERATURE COEFFICIENT | ±100PPM/℃ | 5.2 |
短時(shí)間過負(fù)荷 SHORT TIME OVERLOAD | △R≤±(0.5%R0+0.05Ω) | 5.5 條件A |
斷續(xù)過負(fù)荷 PULSE OVERLOAD | △R≤±(1%R0+0.05Ω) | 5.8 |
焊接耐熱性 RESISTANCE TO SOLDERING HEAT | △R≤±(0.5%R0+0.05Ω) | 6.4 |
溫度循環(huán) TEMPERATURE CYCLING | △R≤±(0.5%R0+0.05Ω) | 7.4 |
耐濕負(fù)荷壽命LOAD LIFE IN HUMIDITY | △R≤±(2%R0+0.1Ω) | 7.9 |
耐溫負(fù)荷壽命 LOAD LIFE | △R≤±(2%R0+0.1Ω) | 7.10 |
特性項(xiàng)目 CHARACTERISTICS | 規(guī)格值 SPECIFICATIONS | 測試方法 TEST METHODS |
直流阻抗值 DC RESISTANCE JIS-C-5202 5.1
|
B±0.1%
| 室溫25℃ AT 25℃ |
溫度特性 TEMPERATURE COEFFICIENT JIS-C-5202 5.2 |
±100PPM/℃ (5R以下不作要求) | R2-R1 R1(T2-T1) R1:常溫(T1)阻抗值 RESISTANCE VALUE AT ROOM TEMPERATURE(T1) R2:常溫+100℃(T2)阻抗值 RESISTANCE VALUE AT ROOM TEMPERATURE +100℃(T2) |
耐電壓 DIELECTRIC WITHSTANDING VOLTAGE JIS-C-5202 5.7 | 涂裝不可燒損,絕緣不可破壞 NO EVIDENCE OF FLASHOVER MECHANICAL DAMAGE,ARCING OR INSULATION BREAKDOWN. | 電阻兩端導(dǎo)線置于金屬V型槽上依特性表之電壓規(guī)定印加60秒 PUT THE RESISTORS TWO SIDE LEAD WIRE ON THE METAL V-TROUGH LOAD THE VOLTAGE,WHICH IS ACCORDING THE CHARACTERISTICS TABLE FOR 60S
|
溫度循環(huán) TEMPERATURE CYCLING JIS-C-5202 7.4
|
△R≤±(0.5%R0+0.05Ω)
| 依下表所規(guī)定之溫度連續(xù)5次 FIVE TIMES ON THE TEMPERATURE AS THE TABLE. 步驟 溫度 放置時(shí)間 STEP TEMPERATURE TIME(MIN) 1 -55℃±3℃ 30 2 ROOM TEMP 10-15 3 155℃±2℃ 30 4 ROOM TEMP 10-15 |
