Document Number: 83673

www.vishay.com

Revision 17-August-01

2–242

FEATURES

– SFH618A-2, 63–125%

– SFH618A-3, 100–200%

– SFH618A-4, 160–320%

– SFH618A-5, 250–500%

– SFH628A-2, 63–200%

– SFH628A-3, 100–320%

– SFH628A-4, 160–500%

• Good CTR Linearity Depending on

Forward Current

• Low CTR Degradation

• Low Coupling Capacitance

• Field-Effect Stable by TRIOS (TRansparent IOn

Shield)

• End-Stackable, 0.100" (2.54 mm) Spacing

• High Common-mode Interference Immunity

(Unconnected Base)

• Underwriters Lab File #52744

•

VDE 0884 Available with Option 1

• SMD Option — See SFH6186/6286 Data Sheet

APPLICATIONS

• Telecom

• Industrial Controls

• Battery Powered Equipment

• Office Machines

DESCRIPTION

The SFH618A/628A feature a high current transfer

ratio, low coupling capacitance and high isolation

voltage. These couplers have a GaAs infrared emit-

ting diode emitter, which is optically coupled to a sili-

con planar phototransistor detector, and is

incorporated in a plastic DIP-4 package.

The coupling devices are designed for signal trans-

mission between two electrically separated circuits.

The couplers are end-stackable with 2.54 mm lead

spacing.

Creepage and clearance distances of >8.0 mm are

achieved with option 6. This version complies with

IEC 950 (DIN VDE 0805) for reinforced insulation up

V

DE

SFH618A/628A

Low Current Input

Optocoupler

Maximum Ratings

Emitter

Reverse Voltage (SFH618A) ............................................................. 6.0 V

DC Forward Current (SFH628A) .................................................. ±50 mA

Total Power Dissipation ................................................................. 70 mW

Detector

Collector-emitter Voltage ................................................................... 55 V

Emitter-collector Voltage................................................................... 7.0 V

Collector Current ............................................................................ 50 mA

Total Power Dissipation ............................................................... 150 mW

Package

Isolation Test Voltage between Emitter and

Detector, refer to Climate DIN 40046,

Creepage Distance ....................................................................

≥7.0 mm

Clearance ...................................................................................

≥7.0 mm

Insulation Thickness between Emitter and Detector ..................

≥0.4 mm

Comparative Tracking Index

per DIN IEC 112/VDE0 303, part 1 ..................................................175

Isolation Resistance

Storage Temperature Range ............................................. –55 to +150

°C

Ambient Temperature Range............................................. –55 to +100

°C

Junction Temperature ......................................................................100

°C

Soldering Temperature (max. 10 s. Dip Soldering

Distance to Seating Plane

≥1.5 mm) ..........................................260°C

Dimensions in Inches (mm)

.255 (6.48)

.268 (6.81)

1

2

4

3

.179 (4.55)

.190 (4.83)

pin one ID

.030 (.76)

.045 (1.14)

4

°

typ.

0.100 (2.54)

.130 (3.30)

.150 (3.81)

.020 (.508 )

.035 (.89)

10

°

3

°–9°

.018 (.46)

.022 (.56)

.008 (.20)

.012 (.30)

.031 (.79) typ.

.050 (1.27) typ.

.300 (7.62) typ.

.110 (2.79)

.130 (3.30)

.230 (5.84)

.250 (6.35)

.050 (1.27)

Collector

Emitter

Anode

Cathode

SFH618A

1

2

4

3

Collector

Emitter

Anode/

Cathode

Cathode/

Anode

SFH628A

1

2

4

3