PS2911-1-AX Optoisolator: Equivalent & Substitute Parts

Part Overview

The PS2911-1-AX is a 2500Vrms optoisolator with transistor output, single channel configuration, and 4-SMD flat lead packaging. This component is designed for galvanic isolation applications requiring high voltage isolation in compact surface mount form factors. The main part (PS2911-1-AX by CEL) is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts maintain identical electrical and mechanical specifications while offering improved availability and product status.

Substiute Parts

PS2911-1-AX

CELIn Stock: 881PS2911-1-AX Datasheet

Current PartRFQ

PS2911-1-F3-AX

Renesas Electronics CorporationIn Stock: 20115PS2911-1-F3-AX Datasheet

DirectRFQ

PS2911-1-V-AX

Renesas Electronics CorporationIn Stock: 1519PS2911-1-V-AX Datasheet

DirectRFQ

PS2911-1-V-F3-AX

Renesas Electronics CorporationIn Stock: 4583PS2911-1-V-F3-AX Datasheet

DirectRFQ

PS2911-1-AX

Renesas Electronics CorporationIn Stock: 2243PS2911-1-AX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2911-1-AX optoisolator is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters define valid substitutes:

Electrical Equivalence Criteria:

• Voltage - Isolation: 2500Vrms (mandatory)
• Number of Channels: 1 (mandatory)
• Current Transfer Ratio range: 100% to 400% @ 1mA (mandatory)
• Turn On / Turn Off Time: 40µs, 120µs (mandatory)
• Rise / Fall Time: 5µs, 10µs (mandatory)
• Output Type: Transistor (mandatory)
• Voltage - Output (Max): 40V (mandatory)
• Current - Output / Channel: 40mA (mandatory)
• Vce Saturation (Max): 300mV (mandatory)
• Operating Temperature: -55°C ~ 100°C (mandatory)

Mechanical Equivalence Criteria:

• Package / Case: 4-SMD, Flat Leads (mandatory)
• Mounting Type: Surface Mount (mandatory)
• Supplier Device Package: 4-Mini-Flat (mandatory)

Compliance Criteria:

• RoHS Status: ROHS3 Compliant (mandatory)
• Moisture Sensitivity Level: 1 (Unlimited) (mandatory)

All substitute parts listed below meet these criteria without exception. Packaging format variations (Cut Tape, Tape & Reel, Strip) represent distribution methods only and do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: PS2911-1-F3-AX (Renesas Electronics)

The PS2911-1-F3-AX is the preferred substitute for the discontinued PS2911-1-AX. This part maintains complete electrical and mechanical equivalence while offering Active product status from Renesas Electronics Corporation. The part is available in Cut Tape and Digi-Reel packaging formats with the highest inventory level (20100 Pcs), ensuring supply chain reliability. ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1) confirm suitability for standard manufacturing environments.

Secondary Recommendations: PS2911-1-V-F3-AX and PS2911-1-V-AX (Renesas Electronics)

Both PS2911-1-V-F3-AX and PS2911-1-V-AX are Active products from Renesas Electronics with identical electrical specifications and ROHS3 compliance. These parts differ only in packaging format (Tape & Reel distribution). PS2911-1-V-F3-AX provides 4553 Pcs inventory, while PS2911-1-V-AX provides 1428 Pcs. Selection between these options depends on procurement quantity requirements and tape reel handling capabilities.

Alternative: PS2911-1-AX (Renesas Electronics)

The Renesas Electronics PS2911-1-AX (Strip packaging) is a parametric equivalent with identical electrical and mechanical specifications. However, this part carries "Not For New Designs" status, indicating it is in end-of-life phase. This option is suitable only for legacy system maintenance or repair applications where design changes are not feasible. REACH status differs from the CEL original (REACH Affected vs. REACH Unaffected for active Renesas variants), requiring compliance verification for specific applications.

Compliance Considerations:

All recommended substitute parts maintain ROHS3 compliance and MSL 1 rating. The original CEL part and the Renesas PS2911-1-AX (Strip) carry REACH Affected status, while active Renesas variants (PS2911-1-F3-AX, PS2911-1-V-AX, PS2911-1-V-F3-AX) are REACH Unaffected. For applications subject to REACH regulations, selection of active Renesas variants is required.

Frequently Asked Questions (FAQ)

Q: Can PS2911-1-F3-AX directly replace the discontinued PS2911-1-AX in existing designs?

A: Yes. The PS2911-1-F3-AX is a direct electrical and mechanical equivalent. All critical parameters—isolation voltage (2500Vrms), current transfer ratio (100-400% @ 1mA), switching times (40µs/120µs), output characteristics (40V, 40mA), and package format (4-SMD flat leads)—are identical. No circuit modifications are required.

Q: What is the difference between PS2911-1-F3-AX, PS2911-1-V-AX, and PS2911-1-V-F3-AX?

A: These three parts are electrically and mechanically identical. The differences are packaging format only: PS2911-1-F3-AX is supplied in Cut Tape and Digi-Reel format; PS2911-1-V-AX and PS2911-1-V-F3-AX are supplied in Tape & Reel format. Selection depends on procurement volume and assembly equipment compatibility. All three are Active products from Renesas Electronics.

Q: Why is the Renesas PS2911-1-AX (Strip packaging) marked "Not For New Designs"?

A: The Renesas PS2911-1-AX in Strip packaging is in end-of-life phase. While electrically and mechanically equivalent, this status indicates the manufacturer is discontinuing this variant. For new designs, selection of active variants (PS2911-1-F3-AX, PS2911-1-V-AX, or PS2911-1-V-F3-AX) is required to ensure long-term supply availability.

Q: Are there any differences in REACH compliance between substitute options?

A: Yes. The original CEL PS2911-1-AX and the Renesas PS2911-1-AX (Strip) are REACH Affected. The three active Renesas variants (PS2911-1-F3-AX, PS2911-1-V-AX, PS2911-1-V-F3-AX) are REACH Unaffected. For applications subject to REACH regulations, use active Renesas variants.

Q: Can I use PS2911-1-V-AX if my assembly equipment requires Digi-Reel format?

A: No. PS2911-1-V-AX is supplied in standard Tape & Reel format only. For Digi-Reel format compatibility, use PS2911-1-F3-AX, which is available in both Cut Tape and Digi-Reel packaging options.

Q: What is the minimum order quantity impact when switching from CEL to Renesas variants?

A: Packaging format affects minimum order quantities. Cut Tape (PS2911-1-F3-AX) typically allows smaller quantities than Tape & Reel formats. Consult your distributor for specific MOQ policies. All variants maintain identical electrical performance regardless of packaging format.

Q: Is the 4-Mini-Flat package identical across all substitute parts?

A: Yes. All substitute parts use the 4-Mini-Flat package specification. This ensures mechanical compatibility with existing PCB layouts, solder paste stencils, and pick-and-place machine programming. No mechanical redesign is required.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. This simplifies inventory management and reduces manufacturing process complexity. All listed parts carry this rating, confirming compatibility with standard storage and handling procedures.