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PS2841-4A-AX Equivalent & Substitute Parts
Part Overview
The PS2841-4A-AX is a 4-channel optoisolator with transistor output, rated for 1500Vrms isolation voltage. This component is designed for applications requiring galvanic isolation between input and output circuits with DC input control and transistor switching capability.
The PS2841-4A-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
Key Parameters
| Parameter | Value |
|---|---|
| Number of Channels | 4 |
| Voltage - Isolation | 1500Vrms |
| Current Transfer Ratio (Min) | 100% @ 1mA |
| Current Transfer Ratio (Max) | 400% @ 1mA |
| Rise / Fall Time (Typ) | 20µs, 110µs |
| Input Type | DC |
| Output Type | Transistor |
| Voltage - Output (Max) | 70V |
| Current - Output / Channel | 20mA |
| Voltage - Forward (Vf) (Typ) | 1.1V |
| Current - DC Forward (If) (Max) | 20mA |
| Vce Saturation (Max) | 300mV |
| Operating Temperature | -40°C ~ 100°C |
| Mounting Type | Surface Mount |
| Package / Case | 12-BSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 12-SSOP |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the PS2841-4A-AX are identified based on strict parametric equivalence. The following criteria determine substitution eligibility:
Critical Parameters for Substitution:
- 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
- Package / Case: 12-BSOP (0.173", 4.40mm Width)
- Operating Temperature Range: -40°C ~ 100°C
All substitute parts must match these parameters exactly to ensure functional and mechanical compatibility within the original circuit design.
Parameter Comparison
| Parameter | PS2841-4A-AX (CEL) | PS2841-4A-AX (Renesas Electronics) |
|---|---|---|
| Manufacturer | CEL | Renesas Electronics Corporation |
| Number of Channels | 4 | 4 |
| Voltage - Isolation | 1500Vrms | 1500Vrms |
| Current Transfer Ratio (Min) | 100% @ 1mA | 100% @ 1mA |
| Current Transfer Ratio (Max) | 400% @ 1mA | 400% @ 1mA |
| Rise / Fall Time (Typ) | 20µs, 110µs | 20µs, 110µs |
| Input Type | DC | DC |
| Output Type | Transistor | Transistor |
| Voltage - Output (Max) | 70V | 70V |
| Current - Output / Channel | 20mA | 20mA |
| Voltage - Forward (Vf) (Typ) | 1.1V | 1.1V |
| Current - DC Forward (If) (Max) | 20mA | 20mA |
| Vce Saturation (Max) | 300mV | 300mV |
| Operating Temperature | -40°C ~ 100°C | -40°C ~ 100°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 12-BSOP (0.173", 4.40mm Width) | 12-BSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 12-SSOP | 12-SSOP |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Discontinued at DiGi Electronics | Not For New Designs |
Engineering Selection Recommendations
The PS2841-4A-AX manufactured by Renesas Electronics Corporation is a parametric equivalent to the CEL PS2841-4A-AX. Both parts share identical electrical specifications, isolation voltage ratings, channel configuration, and package dimensions.
Compliance Status:
- Both versions are ROHS3 Compliant
- Both versions are REACH Unaffected
- Both versions carry ECCN classification EAR99
- Both versions have MSL rating of 1 (Unlimited)
The Renesas Electronics version is currently available with 2553 pieces in stock, compared to the CEL version which is discontinued. The Renesas part carries a "Not For New Designs" status, indicating it remains available for replacement and maintenance applications.
Selection between these equivalent parts should be based on availability, supply chain requirements, and procurement lead times. Both parts are electrically and mechanically interchangeable within the specified operating parameters.
Frequently Asked Questions (FAQ)
Q: Can the Renesas Electronics PS2841-4A-AX replace the CEL PS2841-4A-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 rating, package dimensions, and operating temperature range. Direct substitution is supported.
Q: Are there any differences in the package or pinout between these parts?
A: No. Both parts use the identical 12-BSOP package with 0.173" width and 4.40mm dimensions. Pinout and mechanical compatibility are identical.
Q: What is the significance of the "Not For New Designs" status on the Renesas part?
A: This status indicates the part is available for replacement and maintenance of existing applications but is not recommended for new product development. For existing designs currently using the CEL version, the Renesas equivalent remains suitable for production and field replacement.
Q: Are both parts RoHS compliant?
A: Yes. Both the CEL and Renesas Electronics versions are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.
Q: What are the key parameters that must match for substitution?
A: Critical matching parameters include: 4-channel configuration, 1500Vrms isolation voltage, 100-400% current transfer ratio range, 70V maximum output voltage, 20mA per-channel output current, 12-BSOP package, and -40°C to 100°C operating temperature range.
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