Mfr Part #:

SFH618A-4

Mfr Name: Vishay

The Vishay Dale SFH618A-4 is a phototransistor output optocoupler designed for signal transmission between electrically separated circuits. It offers high isolation voltage and a maximum collector emitter voltage of 55V.

✓ Total Stock: 19,802 pcs

$ Price Range: $7.60

SFH618A-4 Available from 3 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Risen Electronics ✓ Non-Authorised Inventory information	12,000 pcs On Request	12000 pcs	On Request	1	On Request	On Request	On Request	On Request	2026-02-16 21:33:16
Xingangxin ✓ Non-Authorised Inventory information	4,349 pcs On Request	4349 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
ADI/AAR OEM Supply ✓ Non-Authorised Inventory information	3,453 pcs On Request	3453 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

SFH618A-4 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Vishay

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SFH618A-4 Description

Short technical summary and product information.

The Vishay Dale SFH618A-4 is an optocoupler featuring a GaAs infrared diode emitter optically coupled to a silicon planar phototransistor detector. It is housed in a DIP-4 package and is designed for reliable signal transmission between circuits requiring electrical isolation.

Key electrical specifications include a maximum collector emitter voltage (VCEO) of 55V and an isolation test voltage of 5300 VRMS. The current transfer ratio (CTR) varies depending on the forward current, with typical values ranging from 100% at 10mA to 250% at 16mA. The maximum collector current is 100mA, and the maximum forward voltage is 1.5V at 16mA.

This optocoupler operates within a temperature range of -55C to +100C. It is suitable for applications requiring signal transmission in environments such as telecom, industrial controls, battery-powered equipment, and office machines. The DIP-4 package is through-hole mounted, with dimensions of 3.81mm height, 4.83mm length, and 6.81mm width. The lead spacing is 2.54mm, and creepage and clearance distances can exceed 8mm with specific options.

SFH618A-4 Quick Information

Product Type: Optocoupler

Canonical Name: SFH618A-4 Phototransistor Output Optocoupler

Subcategory: Phototransistor Output Optocoupler

SFH618A-4 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

SFH618A-4 Estimated Pricing

Qty	Low	High
1+	$7.60	$7.60

Estimated market price range - modelled values for guidance only, not live distributor offers.

SFH618A-4 Features

High isolation voltage of 5300 VRMS.
Maximum collector emitter voltage is 55V.
Phototransistor output for signal transmission.
DIP-4 package for through-hole mounting.
Wide operating temperature range of -55C to +100C.

SFH618A-4 Applications

Used in telecom systems.
Suitable for industrial controls.
Ideal for battery powered equipment.
Applicable in office machines.

SFH618A-4 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the isolation test voltage for the SFH618A-4?

The isolation test voltage is 5300 VRMS.

What is the maximum collector emitter voltage (VCEO) for the SFH618A-4?

The maximum collector emitter voltage is 55 V.

What is the typical operating temperature range for the SFH618A-4?

The operating temperature range is -55 C to +100 C.

What package type is the SFH618A-4 available in?

The SFH618A-4 is available in a DIP-4 package.

What is the current transfer ratio (CTR) of the SFH618A-4 at 1mA?

The CTR is between 63% and 125% at 1mA.

What is the maximum collector current for the SFH618A-4?

The maximum collector current is 100 mA.