PS2845-4A-F3-A Equivalent & Substitute Parts

Part Overview

The PS2845-4A-F3-A is a 4-channel optoisolator with transistor output, rated for 1500Vrms isolation voltage. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement continuity. The NEPOC series optoisolator provides galvanic isolation suitable for AC and DC input applications with 20mA output current per channel and 70V maximum output voltage capability.

Substiute Parts

PS2845-4A-F3-A

CELIn Stock: 3042PS2845-4A-F3-A Datasheet

Current PartRFQ

PS2845-4A-F3-AX

Renesas Electronics CorporationIn Stock: 3783PS2845-4A-F3-AX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2845-4A-F3-A is determined by strict equivalence across the following critical parameters:

• Channel Configuration: 4 channels required
• Isolation Voltage: 1500Vrms minimum
• Current Transfer Ratio: 100% to 400% @ 1mA range
• Output Characteristics: Transistor output type, 70V maximum, 20mA per channel
• Switching Performance: Rise/fall times of 20µs and 110µs
• Input Compatibility: AC and DC input support
• Package Specification: 12-SOP form factor with 4.40mm width
• Operating Range: -40°C to 100°C temperature specification
• Electrical Ratings: Forward voltage 1.1V typical, Vce saturation 300mV maximum

The PS2845-4A-F3-AX meets all these parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The PS2845-4A-F3-AX is the direct substitute for the obsolete PS2845-4A-F3-A. Selection of the substitute is supported by the following factors:

Product Status: The PS2845-4A-F3-AX maintains active product status through Renesas Electronics Corporation, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Electrical Equivalence: All critical electrical parameters are identical, including isolation voltage, current transfer ratio range, output voltage and current ratings, switching times, and operating temperature range. Pin-to-pin compatibility is maintained through identical 12-SOP packaging.

Compliance Advantages: The PS2845-4A-F3-AX carries ROHS3 compliance certification and REACH unaffected status, providing regulatory advantages over the main part which is REACH affected.

Packaging Availability: The substitute is available in Tape & Reel packaging format, supporting automated assembly processes and bulk procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can PS2845-4A-F3-AX be used as a direct replacement for PS2845-4A-F3-A in existing designs?

A: Yes. The PS2845-4A-F3-AX is electrically and mechanically equivalent. All electrical parameters, including isolation voltage, current transfer ratio, output ratings, switching characteristics, and operating temperature range are identical. The 12-SOP package dimensions are the same, enabling direct PCB substitution.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (CEL versus Renesas Electronics Corporation), product status (obsolete versus active), and compliance certifications. The PS2845-4A-F3-AX is ROHS3 compliant and REACH unaffected, while the main part is REACH affected. Packaging format differs (standard versus Tape & Reel).

Q: Are there any electrical performance differences?

A: No. Both parts share identical electrical specifications across all measured parameters: 1500Vrms isolation, 100-400% current transfer ratio, 20mA output current, 70V maximum output voltage, 20µs and 110µs rise/fall times, and -40°C to 100°C operating range.

Q: What is the significance of the REACH status difference?

A: REACH unaffected status on the PS2845-4A-F3-AX indicates compliance with European chemical regulations without substance restrictions. The main part's REACH affected status may require additional documentation for European market applications.

Q: Is the Tape & Reel packaging of the substitute compatible with my assembly process?

A: Tape & Reel packaging is standard for automated surface mount assembly. If your process requires alternative packaging, confirm availability with your supplier. The electrical and mechanical specifications remain unchanged regardless of packaging format.

Q: Are there any thermal or reliability differences between these parts?

A: No thermal or reliability differences are indicated in the provided specifications. Both parts operate across the identical -40°C to 100°C temperature range with identical electrical ratings and MSL 1 moisture sensitivity classification.