PS2703-1-F3 Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2703-1-F3 is a 3750Vrms isolation optoisolator with transistor output, manufactured by CEL in a 4-SOP surface mount package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The part operates as a single-channel optoisolator with DC input and transistor output configuration, suitable for applications requiring high-voltage isolation in compact form factors.

Substiute Parts

PS2703-1-F3

CELIn Stock: 36024PS2703-1-F3 Datasheet

Current PartRFQ

PS2703-1-F3-A

Renesas Electronics CorporationIn Stock: 25390PS2703-1-F3-A Datasheet

DirectRFQ

LTV-358T

Lite-On Inc.In Stock: 20148LTV-358T Datasheet

SimilarRFQ

PS2703-1-V-F3-A

Renesas Electronics CorporationIn Stock: 8355PS2703-1-V-F3-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS2703-1-F3 are classified based on electrical and mechanical parameter alignment:

Direct Manufacturer Equivalent (PS2703-1-F3-A): This part maintains identical electrical specifications across all critical parameters including isolation voltage (3750Vrms), current transfer ratio range (50%-400% @ 5mA), output voltage maximum (120V), output current (30mA), and Vce saturation (300mV). The primary distinction is product status transition from obsolete to active, with upgraded RoHS3 compliance. Package configuration and mounting type remain unchanged.

Parametric Equivalent (PS2703-1-V-F3-A): This Renesas part duplicates all electrical performance parameters of the main part, including isolation voltage, current transfer ratio specifications, output characteristics, and operating temperature range. It shares identical package and mounting specifications. Product status is active with RoHS3 compliance.

Similar Substitute (LTV-358T): This Lite-On part maintains the core isolation voltage (3750Vrms), single-channel configuration, and 4-SOP package format. Electrical differences include higher minimum current transfer ratio (80% vs. 50% @ 5mA), faster rise/fall times (4µs/3µs vs. 10µs/10µs), increased output current capability (50mA vs. 30mA), lower Vce saturation (200mV vs. 300mV), and extended operating temperature range (-55°C ~ 110°C vs. -55°C ~ 100°C). Product status is active with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: PS2703-1-F3-A is the primary substitute, offering identical electrical performance with the advantage of active product status and ROHS3 compliance. This part is recommended for new designs and production continuity where the original PS2703-1-F3 specifications must be maintained without modification.

For Parametric Equivalence: PS2703-1-V-F3-A provides identical electrical characteristics to the main part with active status and ROHS3 compliance. This part is suitable for applications where the exact parameter set of the PS2703-1-F3 is required.

For Enhanced Performance: LTV-358T offers improved electrical characteristics including higher minimum current transfer ratio (80% vs. 50%), faster switching times (4µs/3µs vs. 10µs/10µs), increased output current capability (50mA vs. 30mA), and lower Vce saturation (200mV vs. 300mV). Extended operating temperature range (-55°C ~ 110°C) provides additional thermal margin. This part is suitable for applications where performance enhancement is acceptable and beneficial. All substitute parts maintain the 4-SOP surface mount package configuration and 3750Vrms isolation voltage specification.

Frequently Asked Questions (FAQ)

Q: Can PS2703-1-F3-A be used as a direct replacement for PS2703-1-F3?

A: Yes. PS2703-1-F3-A maintains identical electrical specifications including isolation voltage (3750Vrms), current transfer ratio (50%-400% @ 5mA), output voltage (120V maximum), output current (30mA), and Vce saturation (300mV). Package configuration and mounting type are unchanged. The primary advantage is active product status with ROHS3 compliance.

Q: What are the key differences between PS2703-1-F3-A and LTV-358T?

A: Both parts maintain 3750Vrms isolation and 4-SOP package format. LTV-358T provides higher minimum current transfer ratio (80% vs. 50% @ 5mA), faster switching response (4µs/3µs rise/fall vs. 10µs/10µs), increased output current (50mA vs. 30mA), and lower Vce saturation (200mV vs. 300mV). Operating temperature range extends to 110°C versus 100°C. These differences represent performance enhancements suitable for applications with higher speed or current requirements.

Q: Are all substitute parts available in the same package configuration?

A: Yes. All substitute parts (PS2703-1-F3-A, PS2703-1-V-F3-A, and LTV-358T) are supplied in 4-SMD, Gull Wing package with surface mount mounting type, maintaining PCB layout compatibility with the original PS2703-1-F3.

Q: What is the compliance status of substitute parts?

A: PS2703-1-F3-A, PS2703-1-V-F3-A, and LTV-358T are all ROHS3 compliant, whereas the original PS2703-1-F3 is RoHS non-compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can LTV-358T be used in applications designed for PS2703-1-F3?

A: LTV-358T is electrically compatible with PS2703-1-F3 for the core isolation voltage (3750Vrms) and package format. The enhanced electrical characteristics (higher current transfer ratio, faster switching, increased output current, lower saturation voltage) are backward compatible. Applications designed for PS2703-1-F3 specifications will function with LTV-358T without circuit modification.