PS2801-1-F4-A Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2801-1-F4-A is an active optoisolator with transistor output, rated for 2500Vrms isolation voltage. This single-channel optoisolator in 4-SSOP package is designed for DC input applications requiring galvanic isolation in industrial and power conversion circuits. The part maintains active product status and ROHS3 compliance. Alternative equivalent parts are identified to support supply chain continuity and design flexibility where specific parametric or packaging variations are acceptable within application constraints.

Substiute Parts

PS2801-1-F4-A

CELIn Stock: 3253PS2801-1-F4-A Datasheet

Current PartRFQ

TCMT1106

Vishay Semiconductor Opto DivisionIn Stock: 4173TCMT1106 Datasheet

SimilarRFQ

PS2801-1-F3-Y-A

Renesas Electronics CorporationIn Stock: 720PS2801-1-F3-Y-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of optoisolators is determined by electrical compatibility across isolation voltage, output characteristics, and switching performance parameters. The PS2801-1-F4-A specifications establish the baseline for acceptable substitutes:

Parametric Equivalents maintain identical or near-identical electrical performance across isolation voltage (2500Vrms), current transfer ratio range (80–600% @ 5mA), output voltage and current ratings (80V, 50mA), and switching times (6µs on, 5µs off). Package compatibility (4-SSOP) is required for pin-for-pin replacement without layout modification.

Functional Equivalents provide the same isolation function with relaxed parametric tolerances. These parts may operate at higher isolation voltages, different current transfer ratio ranges, or alternative switching speeds while maintaining single-channel transistor output configuration and surface mount form factor. Functional substitutes require circuit verification where switching performance or output voltage handling differs from the primary part.

The substitute parts identified below are grouped according to their substitution class based on parametric alignment with the PS2801-1-F4-A.

Parameter Comparison

Engineering Selection Recommendations

PS2801-1-F3-Y-A (Renesas Electronics Corporation) is the primary parametric equivalent for PS2801-1-F4-A replacement. This part shares identical isolation voltage (2500Vrms), current transfer ratio specifications (80–600% @ 5mA), output voltage and current ratings (80V, 50mA), switching times (6µs turn-on, 5µs turn-off), and operating temperature range (-55 to 100°C). Both parts are ROHS3 compliant with MSL 1 rating and REACH unaffected status. The PS2801-1-F3-Y-A maintains the same 4-SSOP package configuration, enabling direct substitution without layout or circuit redesign.

TCMT1106 (Vishay Semiconductor Opto Division) functions as an alternative substitute with higher isolation capability. This part provides 3750Vrms isolation, exceeding the PS2801-1-F4-A baseline by 50%. The TCMT1106 exhibits a higher minimum current transfer ratio (100% @ 5mA versus 80%) with a narrower maximum range (300% versus 600%), and slightly lower maximum output voltage (70V versus 80V). Switching performance differs with longer turn-on/turn-off times (9.5µs/8.5µs versus 6µs/5µs) and extended rise/fall times (5.5µs/7µs versus 3µs/5µs). The TCMT1106 operates across a narrower temperature range (-40 to 100°C) compared to the extended low-temperature capability of the PS2801-1-F4-A. ROHS3 compliance and MSL 1 rating match. Applications requiring faster switching response or full -55°C minimum temperature operation should confirm TCMT1106 suitability before substitution. The TCMT1106 is supplied in 4-SOP package format; mechanical compatibility should be verified against PCB footprint and assembly process specifications.

All three parts maintain active product status and current manufacturing certification status, supporting long-term supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can PS2801-1-F3-Y-A directly replace PS2801-1-F4-A without PCB layout changes?

A: Yes. Both parts utilize identical 4-SSOP package configuration with matching pinout and external dimensions (4-SOIC 0.173", 4.40mm Width). No layout modification is required for pin-for-pin substitution.

Q: What are the key parametric differences between PS2801-1-F4-A and TCMT1106?

A: TCMT1106 provides higher isolation voltage (3750Vrms versus 2500Vrms) but exhibits slower switching response. Turn-on/turn-off times are 9.5µs/8.5µs versus 6µs/5µs. Maximum output voltage is 70V compared to 80V. Current transfer ratio ranges differ: TCMT1106 specifies 100–300% @ 5mA versus PS2801-1-F4-A's 80–600% @ 5mA. Operating temperature minimum is -40°C versus -55°C.

Q: Is TCMT1106 suitable for applications requiring the PS2801-1-F4-A's 6µs switching speed?

A: TCMT1106 switching performance is approximately 60% slower (9.5µs turn-on versus 6µs). Applications with timing-critical requirements or systems designed around the faster PS2801-1-F4-A switching response should conduct functional testing or circuit simulation before TCMT1106 substitution. The parametric equivalent PS2801-1-F3-Y-A maintains identical switching performance.

Q: Are all three parts compatible with existing supply chain and assembly processes?

A: PS2801-1-F4-A and PS2801-1-F3-Y-A are fully compatible—identical 4-SSOP packaging supports direct substitution. TCMT1106 uses 4-SOP package format. While mechanical dimensions match (0.173", 4.40mm Width), confirmation with assembly vendor regarding solder reflow profiles, inspection protocols, and machine compatibility is recommended. All three parts carry MSL 1 (Unlimited) moisture sensitivity and ROHS3 compliance.

Q: What is the supply availability of these substitute parts?

A: Current inventory reflects PS2801-1-F4-A (3225 units), PS2801-1-F3-Y-A (674 units), and TCMT1106 (4108 units) in new original condition. Inventory status should be confirmed directly with suppliers for active projects.

Q: Are compliance certifications identical across all three parts?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, carry ECCN EAR99 classification, and HTSUS code 8541.49.8000. MSL rating is 1 (Unlimited) for all parts, supporting unrestricted storage and handling without moisture baking.