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Product Detailed Parameters
- Description：6PIN DARLINGTON OUTPUT, SINGLE,
- Series：-
- Mfr：Isocom Components 2004 LTD
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：-
- Voltage - Isolation：-
- Current Transfer Ratio (Min)：-
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：-
- Input Type：-
- Output Type：-
- Voltage - Output (Max)：-
- Current - Output / Channel：-
- Voltage - Forward (Vf) (Typ)：-
- Current - DC Forward (If) (Max)：-
- Vce Saturation (Max)：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The 4N29SMT&R is a single-channel optocoupler manufactured by Isocom Components 2004 LTD. It features a surface mount DIP package with six pins and utilizes a Darlington transistor output configuration. The device provides an isolation voltage of 4170 Vrms and supports a maximum forward current of 80 mA. Key electrical parameters include a minimum current transfer ratio of 100% at 10 mA input, a collector-emitter saturation voltage of 400 mV, and a maximum output voltage of 30 V.
Feature Summary
- Integrates an infrared LED emitter with a high-gain Darlington phototransistor array for amplified signal transmission.
- Provides robust galvanic isolation between input and output circuits to protect sensitive components from voltage spikes.
- Designed for surface mount assembly to facilitate automated manufacturing and compact circuit board layouts.
Applications
- Industrial control systems requiring reliable signal isolation
- Power supply feedback loops for voltage regulation
- Solid-state relay driver circuits
Procurement Notes
Verify the specific manufacturer designation when sourcing this component, as Isocom Components 2004 LTD may source devices from other manufacturers. Confirm that the received parts match the exact suffix and packaging specifications required for your assembly process. Ensure compliance with relevant environmental standards before integration into final products.
Selection Notes
Select this component when high current gain is necessary to drive loads directly without additional amplification stages. The Darlington output structure offers superior sensitivity compared to standard phototransistors. Consider the slower switching speed inherent to Darlington configurations when designing for high-frequency applications.
Part Context
This part belongs to the 4N29 series of optocouplers, which are widely used in general-purpose isolation applications. The SMT&R suffix indicates a tape and reel packaging format suitable for automated pick-and-place equipment. This series represents a standard solution for basic digital signal isolation in consumer and industrial electronics.
Replacement Considerations
- 4N29SM
- 4N29SMT
FAQ
What is the typical current transfer ratio for this device?
The minimum current transfer ratio is specified as 100% at a forward current of 10 mA.
Does this optocoupler have a base connection?
Yes, the device includes a base terminal on the Darlington output transistor to allow for external biasing or speed enhancement.
