SIYU R RL251 ...... RL257 普通塑封整流二极管 General Purpose Plastic Rectifier 反向电压 50 --- 1000 V 正向电流 2.5 A Reverse Voltage 50 to 1000 V Forward Current 2.5 A 特征 Features DO-15L ·反向漏电流低 25.4 Low reverse leakage ·正向浪涌承受能力较强 High forward surge capability ·高温焊接保证 High temperature soldering guaranteed: 260℃/10 秒, 0.375" (9.5mm)引线长度。 260℃/10 seconds, 0.375" (9.5mm) lead length, ·引线可承受5 磅 (2.3kg) 拉力。 5 lbs. (2.3kg) tension ·引线和管体皆符合ROHS标准 。 Lead and body according with ROHS standard 0.8±0.1 MIN 7.5±0.2 4.0±0.2 25.4 MIN 机械数据 Mechanical Data ·端子: 镀锡轴向引线 Terminals: Plated axial leads ·极性: 色环端为负极 Polarity: Color band denotes cathode end ·安装位置: 任意 Mounting Position: Any Unit：mm 极限值和温度特性 TA = 25℃ 除非另有规定。 Maximum Ratings & Thermal Characteristics Ratings at 25℃ ambient temperature unless otherwise specified. 符号 Symbols 单位 RL251 RL252 RL253 RL254 RL255 RL256 RL257 Unit 最大可重复峰值反向电压 Maximum repetitive peak reverse voltage VRRM 50 100 200 400 600 800 1000 V 最大均方根电压 Maximum RMS voltage VRMS 35 70 140 280 420 560 700 V 最大直流阻断电压 Maximum DC blocking voltage VDC 50 100 200 400 600 800 1000 V 最大正向平均整流电流 Maximum average forward rectified current IF(AV) 2.5 A 峰值正向浪涌电流 8.3ms单一正弦半波 IFSM 100 A RθJA 15 ℃/W Peak forward surge current 8.3 ms single half sine-wave 典型热阻 Typical thermal resistance 工作结温和存储温度 Operating junction and storage temperature range Tj, TSTG -55 --- +150 ℃ 电特性 TA = 25℃ 除非另有规定。 Electrical Characteristics Ratings at 25℃ ambient temperature unless otherwise specified. 符号 Symbols 最大正向电压 IF = 2.5A Maximum forward voltage 最大反向电流 Maximum reverse current 典型结电容 VR = 4.0V, f = 1MHz Type junction capacitance TA= 25℃ TA=100℃ RL251 RL252 RL253 RL254 RL255 RL256 RL257 单位 Unit VF 1.1 V IR 5.0 50 μA Cj 40 pF 大昌电子 DACHANG ELECTRONICS SIYU R RL251 ...... RL257 特性曲线 Characteristic Curves 正向特性曲线（典型值） 正向电流降额曲线 TYPICAL FORWARD CHARACTERISTIC FORWARD CURRENT DERATING CURVE 3.0 平均正向电流 IF(AV) (A) IF(A) Average Forward Rectified Current (A) 正向电流 IF(A) IF Instantaneous Forward Current (A) 10 2 1 0.2 Tj = 25 °C 0.1 0.01 0.6 0.8 1.0 1.2 1.4 1.6 正向电压 VF(V) VF Instantaneous Forward Voltage (V) 10mm 10mm 2.5 2.0 1.5 1.0 0.5 0 0 25 50 75 100 125 150 175 环境温度 Ta(°C) Tamb, ambient temperature (°C) 浪涌特性曲线（最大值） MAXIMUM NON REPETITIVE PEAK FORWARD SURGE CURRENT IFSM Peak Forward Surge Current (A) 峰值正向浪涌电流 IFSM(A) 100 80 60 40 20 0 1 2 4 6 10 20 40 100 通过电流的周期 Number of Cycles at 60 Hz. 大昌电子 DACHANG ELECTRONICS