PS2801-1-F3-A Equivalent & Substitute Parts

Part Overview

The PS2801-1-F3-A is a single-channel optoisolator with transistor output manufactured by CEL, rated for 2500Vrms isolation voltage in a 4-SSOP surface mount package. This component is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production continuity. The part operates across a temperature range of -55°C to 100°C and provides 50mA output current capability with a maximum output voltage of 80V.

Substiute Parts

PS2801-1-F3-A

CELIn Stock: 355319PS2801-1-F3-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 strict alignment of electrical and mechanical parameters. The PS2801-1-F3-A requires replacement parts that maintain compatibility across the following critical criteria:

Electrical Compatibility Requirements:

• Single-channel configuration (1 channel)
• Transistor output topology
• Isolation voltage rating of 2500Vrms or higher
• Current transfer ratio range of 80% to 600% at 5mA input
• Maximum output voltage of 80V or greater
• Output current capability of 50mA per channel
• Vce saturation maximum of 300mV or lower
• Turn-on and turn-off switching times within specified ranges

Mechanical Compatibility Requirements:

• Surface mount package type
• 4-pin SOIC footprint (0.173", 4.40mm width)
• RoHS3 compliance
• Moisture sensitivity level 1 (unlimited)

Regulatory Compliance:

• REACH unaffected status
• EAR99 export classification
• HTSUS code 8541.49.8000

Substitute parts are classified into two categories: parametric equivalents (matching all electrical specifications) and functional substitutes (meeting core requirements with acceptable parameter variations).

Parameter Comparison

Engineering Selection Recommendations

PS2801-1-F3-Y-A (Renesas Electronics Corporation) - Parametric Equivalent

The PS2801-1-F3-Y-A is a direct parametric equivalent to the PS2801-1-F3-A. This part maintains identical electrical specifications across all measured parameters, including isolation voltage, current transfer ratio range, switching times, output voltage, and saturation characteristics. The component is currently in active production status with 674 units available in inventory. It carries identical RoHS3 compliance, REACH unaffected status, and regulatory classifications. The PS2801-1-F3-Y-A is manufactured by Renesas Electronics Corporation and shares the same base product number (PS2801) family, ensuring design compatibility and pin-for-pin interchangeability. This part is the primary recommendation for direct replacement in existing designs.

TCMT1106 (Vishay Semiconductor Opto Division) - Functional Substitute

The TCMT1106 functions as a substitute optoisolator with enhanced isolation voltage rating of 3750Vrms compared to the 2500Vrms specification of the PS2801-1-F3-A. This higher isolation rating provides additional safety margin in high-voltage isolation applications. The TCMT1106 maintains the same output current capability (50mA), Vce saturation (300mV maximum), and surface mount 4-SOIC package footprint. Key parameter differences include a higher minimum current transfer ratio (100% versus 80%), lower maximum current transfer ratio (300% versus 600%), and slightly slower switching times (9.5µs turn-on versus 6µs, 8.5µs turn-off versus 5µs). The operating temperature range is -40°C to 100°C, which is narrower than the PS2801-1-F3-A range of -55°C to 100°C. The TCMT1106 is currently in active production with 4108 units in inventory and carries identical compliance certifications. This part is suitable for applications where the enhanced isolation voltage is beneficial and the slower switching characteristics are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the PS2801-1-F3-Y-A be used as a direct replacement for the PS2801-1-F3-A?

A: Yes. The PS2801-1-F3-Y-A is a parametric equivalent with identical electrical specifications. All measured parameters including isolation voltage (2500Vrms), current transfer ratio (80% to 600% @ 5mA), switching times, output voltage (80V maximum), and output current (50mA) are identical. The component shares the same 4-SOIC package footprint and surface mount configuration, enabling pin-for-pin replacement without circuit modification.

Q: What are the key differences between the PS2801-1-F3-A and the TCMT1106?

A: The TCMT1106 has a higher isolation voltage rating (3750Vrms versus 2500Vrms), which provides additional isolation margin. However, it has a higher minimum current transfer ratio (100% versus 80%), lower maximum current transfer ratio (300% versus 600%), slower switching times (9.5µs turn-on versus 6µs), and a narrower operating temperature range (-40°C to 100°C versus -55°C to 100°C). Both parts share the same 4-SOIC package, output current rating (50mA), and Vce saturation specification (300mV maximum).

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. The PS2801-1-F3-A, PS2801-1-F3-Y-A, and TCMT1106 all use the 4-SOIC surface mount package with 0.173" width (4.40mm). All three parts are mechanically interchangeable on the same PCB layout without requiring footprint modifications.

Q: Which substitute part should be selected for applications requiring operation below -40°C?

A: The PS2801-1-F3-Y-A is the appropriate choice for applications requiring operation below -40°C, as it maintains the full operating temperature range of -55°C to 100°C. The TCMT1106 has a minimum operating temperature of -40°C and is not suitable for lower temperature environments.

Q: Are there any compliance or regulatory differences between the three parts?

A: No. All three parts carry identical compliance certifications: RoHS3 compliant, REACH unaffected status, EAR99 export classification, and HTSUS code 8541.49.8000. Moisture sensitivity level is 1 (unlimited) for all three components.

Q: What is the inventory status of each substitute part?

A: The PS2801-1-F3-A (discontinued) has 355,300 units in stock. The PS2801-1-F3-Y-A (active) has 674 units available. The TCMT1106 (active) has 4,108 units in inventory. For new designs, the active parts (PS2801-1-F3-Y-A or TCMT1106) are recommended.

Q: Can the TCMT1106 be used in applications where the current transfer ratio must reach 600%?

A: No. The TCMT1106 has a maximum current transfer ratio of 300% at 5mA input, which is lower than the 600% maximum of the PS2801-1-F3-A. Applications requiring the full 600% current transfer ratio range must use the PS2801-1-F3-A or PS2801-1-F3-Y-A.

Q: What switching time differences should be considered when substituting the TCMT1106?

A: The TCMT1106 has slower switching characteristics: turn-on time of 9.5µs (versus 6µs), turn-off time of 8.5µs (versus 5µs), rise time of 5.5µs (versus 3µs), and fall time of 7µs (versus 5µs). Applications with strict timing requirements or high-frequency switching may require circuit analysis to confirm compatibility with these slower transition times.