DESCRIPTION
The SFH618A (DIP) and SFH6186 (SMD) feature a high
current transfer ratio, low coupling capacitance and high
isolation voltage. These couplers have a GaAs infrared
diode emitter, which is optically coupled to silicon planar
phototransistor detector, and is incorporated in a plastic
DIP-4 or SMD package.
The coupling devices are designed for signal transmission
between two electrically separated circuits.The couplers are
end-stackable with 2.54 mm lead spacing. Creepage and
clearance distances of > 8 mm achieved with option 6.

FEATURES
• Good CTR linearity depending on forward current
• Low CTR degradation
• High collector emitter voltage, VCEO = 55 V
• Isolation test voltage, 5300 VRMS
• Low coupling capacitance
• End stackable, 0.100" (2.54 mm) spacing
• High common mode transient immunity
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912

APPLICATIONS
• Telecom
• Industrial controls
• Battery powered equipment
• Office machines

AGENCY APPROVALS
The safety application model number covering all products
in this datasheet is SFH618A. This model number should be
used when consulting safety agency documents.
• UL / cUL 1577
• DIN EN 60747-5-5 (VDE 0884-5) available with option 1
• BSI
• CSA
• FIMKO