PS2733-1-A Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2733-1-A is a single-channel optoisolator with Darlington output manufactured by CEL, rated for 2500Vrms isolation voltage. This component is designed for applications requiring galvanic isolation with DC input and Darlington output configuration. The PS2733-1-A is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. Substitute parts must maintain compatibility across isolation voltage, output type, channel count, and surface mount packaging specifications.

Substiute Parts

PS2733-1-A

CELIn Stock: 954PS2733-1-A Datasheet

Current PartRFQ

PS2833-1-V-A

Renesas Electronics CorporationIn Stock: 2145PS2833-1-V-A Datasheet

SimilarRFQ

PS2833-1-V-F3-A

Renesas Electronics CorporationIn Stock: 1634PS2833-1-V-F3-A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS2733-1-A must satisfy the following mandatory electrical and mechanical criteria:

Isolation Voltage: Substitute parts must maintain 2500Vrms isolation voltage rating to preserve galvanic isolation performance in the target application.

Channel Configuration: Single-channel (1 Channel) configuration is required to match the original part's functional architecture.

Output Type: Darlington output configuration must be preserved to maintain switching characteristics and load-driving capability.

Input Type: DC input type must be maintained for signal compatibility.

Maximum Output Voltage: 350V maximum output voltage rating ensures compatibility with downstream circuit requirements.

Operating Temperature Range: -55°C to 100°C operating temperature range must be supported.

Mounting Type: Surface mount technology is required for PCB assembly compatibility.

Compliance Standards: RoHS3 compliance and REACH status are evaluated for regulatory alignment.

The PS2833-1-V-A and PS2833-1-V-F3-A, both manufactured by Renesas Electronics Corporation, meet all mandatory substitution criteria. Both parts are active products with confirmed inventory availability, providing long-term procurement security compared to the discontinued PS2733-1-A.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The PS2733-1-A is discontinued at DiGi Electronics, creating supply chain risk for new designs and ongoing production. Both PS2833-1-V-A and PS2833-1-V-F3-A are active products manufactured by Renesas Electronics Corporation with confirmed inventory availability, providing long-term procurement security.

Compliance Alignment: All three parts maintain ROHS3 compliance and equivalent regulatory status, ensuring compatibility with environmental and safety requirements.

Output Current Limitation: The substitute parts PS2833-1-V-A and PS2833-1-V-F3-A specify 60mA maximum output current per channel, compared to 150mA for the PS2733-1-A. Applications requiring output currents exceeding 60mA must be evaluated against actual load requirements before substitution.

Switching Speed: The substitute parts exhibit faster rise and fall times (20µs, 5µs) compared to the PS2733-1-A (100µs, 100µs). This represents improved switching performance and does not create compatibility issues in applications designed for the original part.

Packaging Consideration: The PS2733-1-A uses 4-SMD Gull Wing packaging, while substitutes use 4-SOIC (0.173", 4.40mm Width) packaging. PCB layout and footprint modifications are required for physical substitution.

Packaging Option Selection: PS2833-1-V-A is supplied in Strip packaging, while PS2833-1-V-F3-A is supplied in Tape & Reel (TR) packaging. Selection depends on procurement volume and assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can PS2833-1-V-A and PS2833-1-V-F3-A be used interchangeably with PS2733-1-A?

A: Both Renesas parts meet the mandatory electrical criteria for substitution: 2500Vrms isolation voltage, single-channel Darlington output, DC input, 350V maximum output voltage, and -55°C to 100°C operating temperature range. However, the 60mA output current rating of the substitutes is lower than the 150mA rating of the original part. Applications must be evaluated to confirm that load current requirements do not exceed 60mA. Additionally, PCB footprint changes are required due to different package types (4-SMD Gull Wing versus 4-SOIC).

Q: What is the difference between PS2833-1-V-A and PS2833-1-V-F3-A?

A: Both parts are electrically identical with matching electrical specifications. The primary difference is packaging format: PS2833-1-V-A is supplied in Strip packaging, while PS2833-1-V-F3-A is supplied in Tape & Reel (TR) packaging. Selection depends on procurement volume and assembly line requirements. Strip packaging is typically used for lower volumes, while Tape & Reel is standard for high-volume automated assembly.

Q: Why do the substitute parts have lower output current ratings?

A: The PS2833 series from Renesas Electronics Corporation specifies 60mA maximum output current per channel, while the PS2733-1-A specifies 150mA. This is a design difference between manufacturers and product lines. Applications requiring output currents between 60mA and 150mA cannot use these substitutes without circuit redesign.

Q: Are there any compliance or regulatory differences between the main part and substitutes?

A: All three parts are ROHS3 compliant. The PS2733-1-A is REACH Affected, while the PS2833 series parts are REACH Unaffected. Both regulatory statuses are acceptable for most applications; however, specific supply chain requirements should be verified with procurement and compliance teams.

Q: What packaging changes are required for substitution?

A: The PS2733-1-A uses 4-SMD Gull Wing packaging (Supplier Device Package: 4-SOP), while both substitute parts use 4-SOIC (0.173", 4.40mm Width) packaging (Supplier Device Package: 4-SSOP). PCB footprint redesign is required. The 4-SOIC package has different pin spacing and lead configuration compared to 4-SMD Gull Wing, necessitating new PCB layout and assembly tooling.

Q: What are the switching speed differences?

A: The PS2733-1-A has rise and fall times of 100µs and 100µs respectively. The PS2833 series substitutes have faster switching times of 20µs rise time and 5µs fall time. Faster switching performance does not create compatibility issues in applications designed for the original part and may improve overall circuit performance.

Q: Is inventory availability a concern for long-term production?

A: The PS2733-1-A is discontinued at DiGi Electronics with 898 pieces currently in stock. The PS2833-1-V-A has 2108 pieces in stock, and PS2833-1-V-F3-A has 1599 pieces in stock. Both substitute parts are active products from Renesas Electronics Corporation, providing long-term procurement security compared to the discontinued original part.