BY251GP thru BY255GP
Document Number 88541
14-Oct-05
Vishay General Semiconductor
www.vishay.com
1
DO-201AD
P
a
t
e
n
t
e
d
*
®
* Glass-plastic encapsulation
technique is covered by
Patent No. 3,996,602, and
brazed-lead assembly by
Patent No. 3,930,306
Glass Passivated Junction Plastic Rectifier
Major Ratings and Characteristics
IF(AV) 3.0 A
VRRM 200 V to 1300 V
IFSM 100 A
IR5.0 µA
VF1.1 V
Tj max. 175 °C
Features
• Superectifier structure for High Reliability
application
• Cavity-free glass-passivated junction
• Low forward voltage drop
• Low leakage current, IR less than 0.1 µA
• High forward surge capability
• Meets environmental standard MIL-S-19500
• Solder Dip 260 °C, 40 seconds
Typical Applications
For use in general purpose rectification of power sup-
plies, inverters, converters and freewheeling diodes
for both consuer and automotive applications
Mechanical Data
Case: DO-201AD, molded epoxy over glass body
Epoxy meets UL-94V-0 Flammability rating
Terminals: Matte tin plated leads, solderable per
J-STD-002B and JESD22-B102D
E3 suffix for commercial grade, HE3 suffix for high
reliability grade (AEC Q101 qualified)
Polarity: Color band denotes cathode end
Maximum Ratings
(TA = 25 °C unless otherwise noted)
Parameter Symbol BY251GP BY252GP BY253GP BY254GP BY255GP Unit
Maximum repetitive peak reverse voltage VRRM 200 400 600 800 1300 V
Maximum RMS voltage VRMS 140 280 420 560 910 V
Maximum DC blocking voltage VDC 200 400 600 800 1300 V
Maximum average forward rectified current 10 mm lead
length at TA = 55 °C
IF(AV) 3.0 A
Peak forward surge current 10 ms single half sine-wave
superimposed on rated load
IFSM 100 A
Maximum full load reverse current, full cycle average 10 mm
lead length at TA = 55 °C
IR(AV) 100 µA
Operating junction and storage temperature range TJ, TSTG - 65 to + 175 °C
www.vishay.com
2
Document Number 88541
14-Oct-05
BY251GP thru BY255GP
Vishay General Semiconductor
Electrical Characteristics
(TA = 25 °C unless otherwise noted)
Thermal Characteristics
(TA = 25 °C unless otherwise noted)
Notes:
(1) Thermal resistance from junction to ambient and from junction to lead at 0.375" (9.5 mm) lead length, P.C.B. mounted
Ratings and Characteristics Curves
(TA = 25 °C unless otherwise noted)
Parameter Test condition Symbol BY251GP BY252GP BY253GP BY254GP BY255GP Unit
Maximum instantaneous
forward voltage
at 3.0 A VF 1.1 V
Maximum reverse current at
rated DC blocking voltage
TA = 25 °C IR 5.0 µA
Typical reverse recovery time IF = 0.5 A, IR = 1.0 V,
Irr = 0.25 A
trr 3.0 µs
Typical junction capacitance at 4.0 V, 1 MHz CJ 40 pF
Parameter Symbol BY251GP BY252GP BY253G
P
BY254GP BY255G
P
Unit
Typical thermal resistance(1) RθJA
RθJL
20
10
°C/W
Figure 1. Forward Current Derating Curve
10mm lead length
60 Hz
Resistive or
Inductive Load
4.0
3.0
2.0
1.0
0
0 25 50 75 100 125 150 175
Ambient Temperature, °C
Average Forward Rectified Current (A)
Figure 2. Maximum Non-Repetitive Peak Forward Surge Current
TJ = TJ max.
10 ms Single Half Sine-Wave
200
100
10
1 10 100
Number of Cycles at 60 Hz
Peak Forward Surge Current (A)
BY251GP thru BY255GP
Document Number 88541
14-Oct-05
Vishay General Semiconductor
www.vishay.com
3
Package outline dimensions in inches (millimeters)
Figure 3. Maximum Non-Repetitive Peak Forward Surge Current
Figure 4. Typical Instantaneous Forward Characteristics
T
J
= 125 °C
T
J
= 25 °C
T
J
= 75 °C
020406080 100
10
1
0.1
0.01
Percent of Rated Peak Reverse Voltage (%)
Instantaneous Reverse Leakage
Current (µA)
TJ = 25 °C
Pulse Width = 300 µs
1% Duty Cycle
Instantaneous Forward Voltage (V)
Instantaneous Forward Current (A)
100
10
1
0.1
0.6 0.7 0.80.9 1.0 1.1 1.2 1.3
Figure 5. Typical Junction Capacitance
TJ = 25 °C
f = 1.0 MHz
Vsig = 50mVp-p
Reverse Voltage (V)
Junction Capacitance (pF)
100
10
110100
0.210 (5.3)
0.190 (4.8)
Dia.
0.052 (1.32)
0.048 (1.22)
Dia.
1.0 (25.4)
Min.
0.375 (9.5)
0.285 (7.2)
1.0 (25.4)
Min.
DO-201AD
Legal Disclaimer Notice
Vishay
Document Number: 91000 www.vishay.com
Revision: 08-Apr-05 1
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
