PS2801-1-F3 Equivalent & Substitute Parts

Part Overview

The PS2801-1-F3 is a 2500Vrms optoisolator with transistor output in 4-SSOP surface mount package, manufactured by CEL. This component provides galvanic isolation for single-channel applications requiring DC input with transistor output switching. The main part is marked as obsolete; therefore, identifying active equivalent and substitute parts is essential for design continuity and procurement.

Key Parameters

Parameter	Value
Voltage - Isolation	2500Vrms
Number of Channels	1
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Package / Case	4-SOIC (0.173", 4.40mm Width)
Operating Temperature	-55°C ~ 100°C
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts are organized into two categories based on parametric compatibility:

Parametric Equivalents (Direct Substitutes): Parts that match all critical electrical parameters within specified tolerance ranges. These parts share identical isolation voltage (2500Vrms), current transfer ratio ranges (80%-600%), output voltage maximum (80V), and output current (50mA). Parametric equivalents include PS2801-1-F4-A (CEL, Active status) and PS2801-1-F3-Y-A (Renesas Electronics Corporation, Active status). These parts are sourced from the same base product family (PS2801) and maintain full electrical interchangeability.

Similar Substitute (Extended Alternative): The TCMT1106 (Vishay Semiconductor Opto Division) offers higher isolation voltage (3750Vrms) and improved current transfer ratio minimum (100%), making it suitable for applications requiring enhanced isolation performance. This part differs in isolation voltage rating, current transfer ratio specifications, and operating temperature range minimum (-40°C versus -55°C).

Parameter Comparison

Parameter	PS2801-1-F3 (Original)	PS2801-1-F4-A (CEL)	PS2801-1-F3-Y-A (Renesas)	TCMT1106 (Vishay)
Manufacturer	CEL	CEL	Renesas Electronics Corporation	Vishay Semiconductor Opto Division
Product Status	Obsolete	Active	Active	Active
Voltage - Isolation	2500Vrms	2500Vrms	2500Vrms	3750Vrms
Number of Channels	1	1	1	1
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	80% @ 5mA	100% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	600% @ 5mA	300% @ 5mA
Turn On / Turn Off Time (Typ)	6µs, 5µs	6µs, 5µs	6µs, 5µs	9.5µs, 8.5µs
Rise / Fall Time (Typ)	3µs, 5µs	3µs, 5µs	3µs, 5µs	5.5µs, 7µs
Output Type	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	70V
Current - Output / Channel	50mA	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.1V	1.1V	1.1V	1.35V
Vce Saturation (Max)	300mV	300mV	300mV	300mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-40°C ~ 100°C
Package / Case	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

PS2801-1-F4-A (CEL): This part is the primary direct substitute, maintaining identical electrical specifications while offering active product status. RoHS3 compliance and REACH unaffected status provide regulatory alignment superior to the original obsolete part. Tape & Reel packaging supports automated assembly requirements.

PS2801-1-F3-Y-A (Renesas Electronics Corporation): This parametric equivalent from Renesas maintains full electrical interchangeability with the original design. Active product status, RoHS3 compliance, and REACH unaffected classification address regulatory obsolescence concerns. This option is suitable for designs requiring the original PS2801 base product specifications.

TCMT1106 (Vishay Semiconductor Opto Division): This option provides higher isolation voltage (3750Vrms) and improved minimum current transfer ratio (100%), offering enhanced performance margin for isolation-critical applications. The lower maximum output voltage (70V) and extended turn-on time (9.5µs) introduce trade-offs requiring design verification. Operating temperature minimum of -40°C restricts applicability in extended cold-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can PS2801-1-F4-A replace PS2801-1-F3 directly? A: Yes. PS2801-1-F4-A is a parametric equivalent with identical isolation voltage (2500Vrms), current transfer ratio range (80%-600%), switching times, and output specifications. The primary difference is product status (Active versus Obsolete) and packaging format (Tape & Reel).

Q: Is TCMT1106 a drop-in replacement? A: TCMT1106 is not a direct drop-in replacement due to different isolation voltage (3750Vrms versus 2500Vrms), current transfer ratio maximum (300% versus 600%), switching time characteristics, and output voltage maximum (70V versus 80V). Design verification is required for electrical parameter compatibility.

Q: What compliance differences exist between substitutes? A: The original PS2801-1-F3 is RoHS non-compliant. Both PS2801-1-F4-A and PS2801-1-F3-Y-A are RoHS3 compliant and REACH unaffected. TCMT1106 is also RoHS3 compliant and REACH unaffected. For new designs or products subject to RoHS requirements, active substitutes provide regulatory compliance.

Q: How do switching time differences affect circuit operation? A: PS2801-1-F3, PS2801-1-F4-A, and PS2801-1-F3-Y-A share identical turn-on/off times (6µs, 5µs) and rise/fall times (3µs, 5µs). TCMT1106 exhibits longer switching times (9.5µs, 8.5µs turn-on/off and 5.5µs, 7µs rise/fall), limiting frequency response in high-speed switching applications.

Q: Are there packaging considerations for substitution? A: All substitute parts utilize 4-SOIC (0.173", 4.40mm Width) surface mount packages, ensuring pin-compatible PCB layouts. PS2801-1-F4-A is supplied in Tape & Reel format suitable for automated production. PS2801-1-F3-Y-A packaging format is not specified but maintains identical package dimensions.

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