- 478 -
LL4933G THRU LL4937G
1.0 AMP Surface Mount Glass Passivated Silicon Rectifiers
Voltage Range
50 to 600 Volts
Current
1.0 Ampere
Features
Plastic package has carries underwriters
laboratory flammability classification 94V-0.
Surge overload rating to 30 amperes peak
Ideal for printed circuit board
Reliable low cost construction utilizing molded
plastic technique results in inexpensive
product
High temperature soldering guaranteed:
260
O
C / 10 seconds at terminals.
Mechanical Data
Solderability per MIL-STD-750, method
208 at terminals.
Mounting position: Any
Weight: 0.12 gram
MELF
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25
ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%
Type Number
Symbol
LL
4933G
LL
4934G
LL
4935G
LL
4936G
LL
4937G
Units
M
aximum
Recurrent P
eak
R
everse
V
oltage
V
RRM
50 100 200 400 600 V
Maximum RMS Voltage
V
RMS
35 70 140
280
420
V
Maximum DC Blocking Voltage
V
DC
50 100 200 400 600 V
Maximum Average Forward Rectified Current
@T
A
= 75
I
(AV)
1.0 A
Peak Forward Surge Current, 8.3 ms Single
Half Sine-wave Superimposed on Rated Load
(JEDEC method )
I
FSM
30 A
Maximum Instantaneous Forward Voltage
@1.0A
V
F
1.2 V
Maximum DC Reverse Current @ T
A
=25
at Rated DC Blocking Voltage @ T
A
=100
I
R
5
100
uA
uA
Maximum Reverse Recovery Time(Note 3)
Trr 150
nS
Typical Junction Capacitance ( Note 1 )
Cj 15
pF
Typical Thermal Resistance (Note 2)
R
JC
60
/W
Operating and Storage Temperature Range
T
J
,T
STG
- 65 to + 150
Notes: 1. Measured at 1 MHz and Applied Reverse Voltage of 4.0 Volts D.C.
2. Thermal Resistance from Junction to case. Mount on 0.2" x 0.2" Cu-pad on P.C.B.
3. Reverse Recovery Test Conditions: I
F
=0.5A, I
R
=1.0A, I
RR
=0.25A
- 479 -
FIG.1- REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM
50
W
NONINDUCTIVE
1W
NON
INDUCTIVE
OSCILLOSCOPE
(NOTE 1)
PULSE
GENERATOR
(NOTE 2)
DUT
(+)
50Vdc
(approx)
(-)
NOTES: 1. Rise Time=7ns max. Input Impedance=
1 megohm 22pf
2. Rise Time=10ns max. Sourse Impedance=
50 ohms
(-)
(+)
10
W
NONINDUCTIVE
-1.0A
-0.25A
0
+0.5A
trr
1cm
SET TIME BASE FOR
5/ 10ns/ cm
RATINGS AND CHARACTERISTIC CURVES (LL4933G THRU LL4937G)
FIG.5- TYPICAL FORWARD CHARACTERISTICS
INST
ANT
ANEOUS
FOR
W
ARD
CURRENT
.
(A)
1.6
1.8
2.0
0.6
0.8
1.0
1.2
1.4
0.03
0.1
0.3
1
10
20
3
0.01
FORWARD VOLTAGE. (V)
Tj=25 C
Pulse Width=300 s
1% Duty Cycle
o
FIG.4- TYPICAL JUNCTION CAPACITANCE
JUNCTION
CAP
ACIT
ANCE.(pF)
1
10
100
20
10
1
REVERSE VOLTAGE. (V)
Tj=25 C
0
f=1 MHz
Vsig=50mVp-p
FIG.6- TYPICAL REVERSE CHARACTERISTICS
INST
ANT
ANEOUS
REVERSE
CURRENT
.
(mA)
0
20
40
60
80
100
120
140
0.1
1
10
100
PERCENT OF RATED PEAK REVERSE VOLTAGE. (%)
TJ=25 C
0
TJ=100 C
0
FIG.2- MAXIMUM FORWARD CURRENT DERATING
CURVE
A
VERAGE
FOR
W
ARD
RECTIFIED
CURRENT
AMPERES
25
0
50
75
100
125
150
175
0.4
0
0.2
0.6
0.8
1.0
AMBIENT TEMPERATURE. ( C)
o
FIG.3- MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
PEAK
FOR
W
ARD
SURGE
CURRENT
AMPERES
1
2
4
10
20
60 80
6
8
40
100
20
10
0
30
NUMBER OF CYCLES AT 60Hz
8.3ms Single Half Sine Wave
JEDEC Method
P.C.B. MONTED ON 0.2X0.2"
(5.0X5.0mm)COPPER AREAS PADS
TJ=75 C
0
1.0 CYCLE
PDF 
ZIP