HER257

SIYU R 塑封高效率整流二极管 反向电压 50 ---1000 V 正向电流 2.5 A DO-15L HER251 ...... HER258 Plastic High-Efficiency Rectifiers Reverse Voltage 50 to 1000V Forward Current 2.5A 特征 Features ·反向漏电流低 25.4 0.8±0.1 Low reverse leakage High forward surge capability ·正向浪涌承受能力较强 MIN 7.5±0.2 4.0±0.2 25.4 MIN ·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 机械数据 Mechanical Data Unit：mm ·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 极限值和温度特性 TA = 25℃ 除非另有规定。 Maximum Ratings & Thermal Characteristics 符号 Symbols 最大可重复峰值反向电压 Maximum repetitive peak reverse voltage Ratings at 25℃ ambient temperature unless otherwise specified. HER 252 HER 253 HER 254 HER 255 HER 256 HER 257 HER 258 HER 251 单位 Unit V V V A A ℃/W VRRM 50 35 50 100 70 100 200 140 200 300 210 300 2.5 400 280 400 600 420 600 800 560 800 1000 700 1000 最大均方根电压 Maximum RMS voltage VRMS VDC IF(AV) IFSM RθJA Tj, TSTG 最大直流阻断电压 Maximum DC blocking voltage 最大正向平均整流电流 Maximum average forward rectified current 峰值正向浪涌电流 8.3ms单一正弦半波 Peak forward surge current 8.3 ms single half sine-wave 100 20 典型热阻 Typical thermal resistance 工作结温和存储温度 Operating junction and storage temperature range -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 Maximum forward voltage HER 251 HER 252 HER 253 HER 254 HER 255 HER 256 HER 257 HER 258 单位 Unit V μA IF = 2.5A TA= 25℃ TA=100℃ IF=0.5A IR=1.0A IRR=0.25A VF IR trr Cj 1.0 1.3 5.0 200 1.7 最大反向电流 Maximum reverse current 最大反向恢复时间 MAX. Reverse Recovery Time 50 50 75 30 nS pF 典型结电容 Type junction capacitance VR = 4.0V, f = 1MHz 大昌电子 DACHANG ELECTRONICS SIYU R 特性曲线 Characteristic Curves 正向特性曲线（典型值） TYPICAL FORWARD CHARACTERISTIC HER251 ...... HER258 正向电流降额曲线 FORWARD CURRENT DERATING CURVE 10 IF Instantaneous Forward Current (A) HER251 thru HER253 3.5 10mm 10mm 平均正向电流 IF(AV) (A) IF(A) Average Forward Rectified Current (A) 3.0 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) 2 1 HER254, HER255 正向电流 IF(A) 0.2 0.1 HER256 thru HER258 Tj = 25 °C 0.01 0.8 1.0 1.2 1.4 1.6 1.8 正向电压 VF(V) VF Instantaneous Forward Voltage (V) 浪涌特性曲线（最大值） MAXIMUM NON REPETITIVE PEAK FORWARD SURGE CURRENT 100 IFSM Peak Forward Surge Current (A) 80 峰值正向浪涌电流 IFSM(A) 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