PS2841-4B-A Equivalent & Substitute Parts

Part Overview

The PS2841-4B-A is a 4-channel optoisolator with transistor output, rated for 1500Vrms isolation voltage. This component is classified as Obsolete, necessitating identification of equivalent substitute parts for ongoing production and maintenance applications. The part operates across a temperature range of -40°C to 100°C and is housed in a 12-BSOP surface mount package.

Substiute Parts

PS2841-4B-A

CELIn Stock: 1138PS2841-4B-A Datasheet

Current PartRFQ

PS2841-4B-AX

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2841-4B-A is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Number of Channels: 4
• Voltage - Isolation: 1500Vrms
• Current Transfer Ratio: 100% (Min) @ 1mA and 400% (Max) @ 1mA
• Output Type: Transistor
• Voltage - Output (Max): 70V
• Current - Output / Channel: 20mA
• Vce Saturation (Max): 300mV
• Input Type: DC
• Voltage - Forward (Vf) (Typ): 1.1V
• Current - DC Forward (If) (Max): 20mA
• Rise / Fall Time (Typ): 20µs, 110µs

Mechanical Equivalence Criteria:

• Package / Case: 12-BSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C

The identified substitute maintains full electrical and mechanical compatibility with the original PS2841-4B-A specification.

Parameter Comparison

Engineering Selection Recommendations

PS2841-4B-AX (Renesas Electronics Corporation) is the direct substitute for PS2841-4B-A.

Compliance Considerations:

• The PS2841-4B-AX is ROHS3 Compliant, whereas the original part does not specify RoHS compliance status.
• The PS2841-4B-AX is REACH Unaffected, providing regulatory advantage over the original PS2841-4B-A, which is REACH Affected.
• Both parts share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications.

Product Status:

• The original PS2841-4B-A is Obsolete, making the PS2841-4B-AX necessary for continued supply.
• The PS2841-4B-AX carries a "Not For New Designs" status, indicating it remains available for legacy system support and maintenance.

Electrical and Mechanical Compatibility: All electrical parameters, including isolation voltage, current transfer ratio, output characteristics, and timing specifications, are identical. The package and mounting configuration are equivalent, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can PS2841-4B-AX be used as a direct replacement for PS2841-4B-A in existing designs?

A: Yes. The PS2841-4B-AX maintains identical electrical specifications across all critical parameters: 4-channel configuration, 1500Vrms isolation, 100-400% current transfer ratio, 70V maximum output voltage, and 20mA per-channel output current. The package and mounting type are equivalent, enabling direct PCB substitution without design modification.

Q: What is the difference in regulatory compliance between these parts?

A: The PS2841-4B-AX is ROHS3 Compliant and REACH Unaffected, providing superior regulatory alignment for modern supply chain requirements. The original PS2841-4B-A is REACH Affected and does not specify RoHS compliance. Both parts share the same ECCN and HTSUS classifications.

Q: Are there any performance differences between PS2841-4B-A and PS2841-4B-AX?

A: No performance differences exist. Both parts operate identically across all specified electrical parameters, including current transfer ratio, output voltage, saturation voltage, rise/fall times, and operating temperature range (-40°C to 100°C).

Q: What is the significance of the "Not For New Designs" status on PS2841-4B-AX?

A: This status indicates the part is available for legacy system maintenance and repair but is not recommended for new product development. For new designs, consult the substitute chain or contact the manufacturer for current-generation alternatives.

Q: Is the 12-BSOP package identical between both parts?

A: Yes. Both parts use the 12-BSOP package with 0.173" width (4.40mm), classified as 12-SSOP in supplier documentation. No PCB layout or footprint changes are required for substitution.

Q: What is the moisture sensitivity level for these optoisolators?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.