SIYU
R
塑封快恢复整流二极管
反向电压
50 ---1000 V
正向电流
2.5 A
DO-15L
FR251 ...... FR257
Plastic Fast Recover Rectifier
Reverse Voltage 50 to 1000V
Forward Current 2.5A
特征
Features
·反向漏电流½
Low reverse leakage
·正向浪涌承受½力较强
High forward surge capability
0.8±0.1
25.4
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½皆符合RoHS标准 。
Lead and body according with RoHS standard
机械数据
Mechanical Data
·端子: 镀锡½向引线
Terminals: Plated axial leads
·极性: 色环端为负极
Polarity: Color band denotes cathode end
·安装½½: 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
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.
FR251 FR252 FR253 FR254 FR255 FR256 FR257
50
35
50
100
70
100
200
140
200
400
280
400
2.5
125
15
600
420
600
800
560
800
1000
700
1000
单½
Unit
V
V
V
A
A
℃/W
V
RRM
最大均方根电压
Maximum RMS voltage
V
RMS
V
DC
I
F(AV)
I
FSM
R
θJA
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
典型热阻
Typical thermal resistance
工½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
FR251 FR252 FR253 FR254 FR255
1.3
5.0
200
FR256 FR257
单½
Unit
V
μA
I
F
= 2.5A
TA= 25℃
TA=100℃
I
F
=0.5A I
R
=1.0A I
RR
=0.25A
V
F
I
R
trr
C
j
150
最大反向电流
Maximum reverse current
最大反向恢复时间
MAX. Reverse Recovery Time
300
45
nS
pF
典型结电容
Type junction capacitance
V
R
= 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
FR251 ...... FR257
正向电流降额曲线
FORWARD CURRENT DERATING CURVE
10mm
10mm
10
平均正向电流
I
F(AV)
(A)
Average Forward Rectified Current (A)
I
F(A)
I
F
Instantaneous Forward 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
正向电流
I
F
(A)
0.2
Tj = 25 °C
0.1
0.01
0.6
0.8
1
1.2
1.4
1.6
正向电压 V
F
(V)
V
F
Instantaneous Forward Voltage (V)
浪涌特性曲线（最大值）
MAXIMUM NON REPETITIVE
PEAK FORWARD SURGE CURRENT
125
I
FSM
Peak Forward Surge Current (A)
100
峰值正向浪涌电流 I
FSM
(A)
75
50
25
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
Analogue and Mixed Signal
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