4 PIN SOP PHOTOTRANSISTOR
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 1 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
EL357-G Series
Features:
• Halogens free
• Current transfer ratio
(CTR: 50~600% at IF =5mA, VCE =5V)
• High isolation voltage between input
and output (Viso=3750 V rms )
• Compact small outline package
• Pb free and RoHS compliant.
• UL approved (No. E214129)
• VDE approved (No. 132249)
• SEMKO approved (No. 7161608) Schematic
• NEMKO approved (No. P06206474)
• DEMKO approved (No. 313924)
• FIMKO approved (No. FI 22807)
• CSA approved (No. 1969127)
Description
Pin Configuration
1. Anode
2. Cathode
3. Emitter
4. Collector
The EL357 series contains an infrared emitting diode,
optically coupled to a phototransistor encapsulated with
green compound.
The devices in a 4-pin small outline SMD package.
Applications
• Programmable controllers
• System appliances, measuring instruments
• Telecommunication equipments
• Home appliances, such as fan heaters, etc.
• Signal transmission between circuits of different potentials and impedances
4 PIN SOP PHOTOTRANSISTOR
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 2 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
EL357-G Series
Absolute Maximum Ratings (Ta=25°C)
Parameter Symbol Rating Unit
Forward current IF 50 mA
Peak forward current (1us, pulse) IFP 1 A
Reverse voltage VR 6 V
Input
Power dissipation
No derating required up to Ta = 100°C PD 70 mW
150 mW
Power dissipation
Derating factor (above Ta = 80°C) PC 3.7 mW/°C
Collector current IC 80 mA
Collector-Emitter voltage VCEO 80 V
Output
Emitter-Collector voltage VECO 7 V
Total power dissipation PTOT 200 mW
Isolation voltage *1 V
ISO 3750 V rms
Operating temperature TOPR -55 ~ +110 °C
Storage temperature TSTG -55 ~ +125 °C
Soldering temperature *2 T
SOL 260 °C
Notes
*1 AC for 1 minute, R.H.= 40 ~ 60% R.H. In this test, pins 1 & 2 are shorted together, and pins 3 & 4
are shorted together.
*2 For 10 seconds.
4 PIN SOP PHOTOTRANSISTOR
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 3 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
EL357-G Series
Electrical Characteristics (Ta=25°C unless specified otherwise)
Input Parameter Symbol Min. Typ.* Max. Unit Condition
Forward voltage VF - 1.2 1.4 V
IF = 20mA
Reverse current IR - - 10 µA
VR = 4V
Input capacitance Cin - 30 250 pF V = 0, f = 1kHz
Output Parameter Symbol Min. Typ.* Max. Unit Condition
Collector-Emitter dark
current ICEO - - 100 nA
VCE = 20V, IF = 0mA
Collector-Emitter
breakdown voltage BVCEO 80 - - V IC = 0.1mA
Emitter-Collector
breakdown voltage BVECO 7 - - V
IE = 0.1mA
Transfer Characteristics (Ta=25°C unless specified otherwise)
Parameter Symbol Min. Typ.* Max. Unit Condition
EL357 50 - 600
EL357A 80 - 160
EL357B 130 - 260
EL357C 200 - 400
Current Transfer
ratio
EL357D
CTR
300 - 600
% IF = 5mA ,VCE = 5V
Collector-Emitter
saturation voltage VCE(sat) - 0.1 0.2 V IF = 1mA ,IC = 20mA
Isolation resistance RIO 5×1010 - -
Ω VIO = 500Vdc,
40~60% R.H.
Floating capacitance CIO - 0.6 1.0 pF
VIO = 0, f = 1MHz
Cut-off frequency fc - 80 - kHz VCE = 5V, IC = 2mA
RL = 100Ω, -3dB
Rise time tr - 6 18
µs
Fall time tf - 8 18
µs VCE = 2V, IC = 2mA,
RL = 100Ω
* Typical values at Ta = 25°C
PIN SOP 4
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 4 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
PHOTOTRANSISTOR
EL357-G Series
Typical Performance Curves
PIN SOP 4
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 5 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
PHOTOTRANSISTOR
EL357-G Series
VCC
Figure 10. Switching Time Test Circuit & Waveforms
IF IC RL
RIN
Output
Input
Pulse
10%
Input Output
Pulse 90%
t t
r
f
ton tof
f
4 PIN SOP PHOTOTRANSISTOR
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 6 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
EL357-G Series
Order Information
Part Number
EL357(X)(Y)-VG
Note
X = CTR Rank (A, B, C, D or none)
Y = Tape and reel option (TA, TB or none).
V = VDE option
G = Halogen free
Option Description Packing quantity
None Standard SMD option 100 units per tube
-V Standard SMD option + VDE 100 units per tube
(TA) TA Tape & reel option 3000 units per reel
(TB) TB Tape & reel option 3000 units per reel
(TA)-V TA Tape & reel option + VDE 3000 units per reel
(TB)-V TB Tape & reel option + VDE 3000 units per reel
4 PIN SOP PHOTOTRANSISTOR
Everlight Electronics Co., Ltd. 7 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
EL357-G Series
PHOTOCOUPLER
Package Drawing
(Dimensions in mm)
Recommended pad layout for surface mount leadform
4 PIN SOP
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 8 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
PHOTOTRANSISTOR
EL357-G Series
Device Marking
EL
G 357
RYWWV
Notes
EL denotes Everlight
357 denotes Part Number
R denotes CTR Rank (A, B, C, D or none)
Y denotes 1 digit Year code
WW denotes 2 digit Week code
V denotes VDE (optional)
G denotes Halogens free
4 PIN SOP PHOTOTRANSISTOR
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 9 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
EL357-G Series
Tape & Reel Packing Specifications
Option TA Option TB
Direction of feed from reel Direction of feed from reel
Tape dimensions
Dimension No. A B Do D1 E F
Dimension (mm) 4.4 ± 0.1 7.4 ± 0.1 1.5 + 0.1/-0 1.5 ± 0.1 1.7 5± 0.1 7.5 ± 0.1
Dimension No. Po P1 P2 t W K
Dimension (mm) 4.0 ± 0.15 8.0 ± 0.1 2.0 ± 0.1 0.25 ± 0.03 16.0 ± 0.2 2.4 ± 0.1
4 PIN SOP PHOTOTRANSISTOR
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 10 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
EL357-G Series
Solder Reflow Temperature Profile
260 °C
(p
eak
)
1
50
°
C
1-
3
°
C/S
ec Max
7
–
17
0
S
ec
2
00
°
C
217°
C
>2
55
°
C
(30
s Min
)
1-
3
°
C/Sec
M
a
x60
–
140 Sec
TIME
(S)
4 PIN SOP PHOTOTRANSISTOR
PHOTOCOUPLER
Everlight Electronics Co., Ltd. 11 http:\\www.everlight.com
Document No：PDS-ELST-357G Rev. 0 April 25, 2008
EL357-G Series
DISCLAIMER
1. The specifications in this datasheet may be changed without notice. EVERLIGHT reserves the authority
on material change for above specification.
2. When using this product, please observe the absolute maximum ratings and the instructions for use as
outlined in this datasheet. EVERLIGHT assumes no responsibility for any damage resulting from use of
the product which does not comply with the absolute maximum ratings and the instructions included in this
datasheet.
3. These specification sheets include materials protected under copyright of EVERLIGHT. Reproduction in
any form is prohibited without the specific consent of EVERLIGHT.