PS2733-1-F3-A Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2733-1-F3-A is a Darlington output optoisolator rated for 2500Vrms isolation voltage with single-channel configuration. Manufactured by CEL in 4-SOP package, this component is currently discontinued at DiGi Electronics. Finding equivalent and substitute parts is necessary to maintain design compatibility and ensure continuous component availability for production and maintenance applications.

Key Parameters

Parameter	Specification
Manufacturer Part Number	PS2733-1-F3-A
Manufacturer	CEL
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	2500Vrms
Current Transfer Ratio (Min)	1500% @ 1mA
Output Type	Darlington
Voltage - Output (Max)	350V
Current - Output / Channel	150mA
Voltage - Forward (Vf) (Typ)	1.15V
Current - DC Forward (If) (Max)	50 mA
Vce Saturation (Max)	1V
Rise / Fall Time (Typ)	100µs, 100µs
Operating Temperature	-55°C ~ 100°C
Package / Case	4-SMD, Gull Wing
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitute parts for the PS2733-1-F3-A are categorized based on the following critical parameters:

Key Parameters for Substitution:

Voltage - Isolation: 2500Vrms
Output Type: Darlington
Number of Channels: 1
Input Type: DC
Operating Temperature: -55°C ~ 100°C
RoHS Status: ROHS3 Compliant

Substitution Categories:

Parametric Equivalents (Recommended Primary Substitutes): PS2733-1-V-F3-A and PS2733-1-F3-A (Renesas Electronics Corporation) maintain identical electrical performance characteristics, including 1500% minimum current transfer ratio, 150mA output current, and 100µs rise/fall times. These parts share the same package type (4-SOP, Gull Wing) and manufacturing series (NEPOC).

Pin-Compatible Alternatives: PS2833-1-V-A and PS2833-1-V-F3-A (Renesas Electronics Corporation) provide electrical substitution with different performance profiles. While maintaining 2500Vrms isolation voltage and Darlington output configuration, these parts feature reduced output current (60mA vs. 150mA) and faster rise/fall times (20µs/5µs vs. 100µs). The package remains compatible at 4-SOIC/4-SSOP footprint.

Parameter Comparison

Parameter	PS2733-1-F3-A (Original)	PS2733-1-V-F3-A	PS2833-1-V-A	PS2833-1-V-F3-A
Manufacturer	CEL	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation
Number of Channels	1	1	1	1
Voltage - Isolation	2500Vrms	2500Vrms	2500Vrms	2500Vrms
Current Transfer Ratio (Min)	1500% @ 1mA	1500% @ 1mA	400% @ 1mA	400% @ 1mA
Current Transfer Ratio (Max)	-	-	4500% @ 1mA	4500% @ 1mA
Output Type	Darlington	Darlington	Darlington	Darlington
Voltage - Output (Max)	350V	350V	350V	350V
Current - Output / Channel	150mA	150mA	60mA	60mA
Voltage - Forward (Vf) (Typ)	1.15V	1.15V	1.2V	1.2V
Current - DC Forward (If) (Max)	50 mA	50 mA	50 mA	50 mA
Vce Saturation (Max)	1V	1V	1V	1V
Rise / Fall Time (Typ)	100µs, 100µs	100µs, 100µs	20µs, 5µs	20µs, 5µs
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Active	Active	Active

Engineering Selection Recommendations

Direct Replacement (Preferred): PS2733-1-V-F3-A is recommended as the primary substitute. Manufactured by Renesas Electronics Corporation and currently active in production, this part maintains identical electrical specifications and package configuration to the original PS2733-1-F3-A. Compliance with ROHS3 and REACH standards is maintained.

Performance-Limited Alternatives: PS2833-1-V-A and PS2833-1-V-F3-A are suitable substitutes for applications where reduced output current capacity (60mA versus 150mA) and faster response time characteristics (20µs/5µs versus 100µs) meet design requirements. All alternatives maintain the required 2500Vrms isolation voltage and Darlington output configuration. Active product status ensures ongoing component availability and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can PS2833-1-V-A be used as a direct substitute for PS2733-1-F3-A? A: Yes, but with output current derating. The PS2833-1-V-A provides the same isolation voltage and Darlington output type but with maximum output current of 60mA compared to 150mA. Circuit designs must be verified to operate within this lower current specification.

Q: What is the primary difference between PS2733 and PS2833 series? A: The PS2733 series delivers 150mA output current with 100µs response time, while PS2833 series provides 60mA output current with faster 20µs rise and 5µs fall times. Both maintain 2500Vrms isolation and operate across the same temperature range.

Q: Are packaging differences between 4-SOP and 4-SOIC significant for PCB layout? A: Yes. The 4-SMD Gull Wing package (PS2733) and 4-SOIC package (PS2833) have different footprints. PCB design changes are required to accommodate PS2833-series parts if substituting from PS2733-series. Mechanical clearance and solder reflow profiles may differ.

Q: What compliance certifications apply to all substitute parts? A: All listed parts meet ROHS3 compliance and are REACH unaffected. ECCN classification EAR99 and HTSUS code 8541.49.8000 apply uniformly across all optoisolator parts.

Q: Is PS2733-1-V-F3-A recommended over PS2833-1-V-F3-A for new designs? A: For designs requiring 150mA output current capability, PS2733-1-V-F3-A is recommended. The PS2833-1-V-F3-A is suitable only when circuit requirements limit output current to 60mA or less. Both parts are currently active and in production.

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