PS2841-4B-AX Equivalent & Substitute Parts

Part Overview

The PS2841-4B-AX is a 4-channel optoisolator with transistor output, rated for 1500Vrms isolation voltage. This component is designed for applications requiring galvanic isolation between logic and power circuits in industrial control, motor drive, and power management systems.

The PS2841-4B-AX manufactured by CEL is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

PS2841-4B-AX

CELIn Stock: 946PS2841-4B-AX Datasheet

Current PartRFQ

PS2841-4B-AX

Renesas Electronics CorporationIn Stock: 1208PS2841-4B-AX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS2841-4B-AX are identified based on strict parametric equivalence. The following criteria determine substitutability:

Critical Matching Parameters:

• Number of Channels: 4
• Voltage - Isolation: 1500Vrms
• Output Type: Transistor
• Current Transfer Ratio: 100% (Min) @ 1mA and 400% (Max) @ 1mA
• Voltage - Output (Max): 70V
• Current - Output / Channel: 20mA
• Vce Saturation (Max): 300mV
• Operating Temperature Range: -40°C ~ 100°C
• Package / Case: 12-BSOP (0.173", 4.40mm Width)
• Input Type: DC

All substitute parts must match these parameters exactly to ensure functional and mechanical compatibility within the original application circuit.

Parameter Comparison

Engineering Selection Recommendations

The PS2841-4B-AX manufactured by Renesas Electronics Corporation is a parametric equivalent to the CEL PS2841-4B-AX. Both parts share identical electrical specifications, isolation voltage ratings, channel configuration, and package dimensions.

Availability Consideration: The CEL version is discontinued at DiGi Electronics with 841 pieces in stock. The Renesas Electronics version is marked as "Not For New Designs" but has 1174 pieces available in inventory.

Compliance Status: Both versions are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited moisture sensitivity). Both are classified under ECCN EAR99 and HTSUS 8541.49.8000.

Selection Basis: Component selection should be based on inventory availability, lead time requirements, and supply chain continuity. Both parts are electrically and mechanically interchangeable within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the Renesas Electronics PS2841-4B-AX replace the CEL PS2841-4B-AX in existing designs?

A: Yes. Both parts are parametrically equivalent across all critical electrical and mechanical specifications, including isolation voltage, channel count, output current, saturation voltage, and package dimensions. Direct substitution is supported without circuit modification.

Q: What are the key parameters that determine substitutability for this optoisolator?

A: Substitutability is determined by matching: number of channels (4), isolation voltage (1500Vrms), current transfer ratio range (100-400% @ 1mA), maximum output voltage (70V), output current per channel (20mA), saturation voltage (300mV maximum), operating temperature range (-40°C to 100°C), and package type (12-BSOP surface mount).

Q: Are there any differences in packaging between the two versions?

A: No. Both versions use the 12-BSOP package with 0.173" width and 4.40mm dimensions. Both are surface mount components with identical pin configurations and PCB footprints.

Q: What is the significance of the product status differences?

A: The CEL version is discontinued at DiGi Electronics, indicating end-of-life status. The Renesas version is marked "Not For New Designs," indicating it is available for existing production but not recommended for new development. For ongoing production support, the Renesas version provides better availability.

Q: Do both parts meet the same compliance standards?

A: Yes. Both versions are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). Both are classified under the same ECCN and HTSUS codes.

Q: What is the current transfer ratio specification, and why is it important?

A: The current transfer ratio ranges from 100% to 400% at 1mA input current. This parameter defines the relationship between input LED current and output transistor current, directly affecting circuit gain and switching characteristics. Matching this specification ensures consistent signal transfer and timing performance.