PS2801-4-F3 Equivalent & Substitute Parts

Part Overview

The PS2801-4-F3 is a 4-channel optoisolator with transistor output, rated for 2500Vrms isolation voltage. Manufactured by CEL, this component is classified as obsolete and is no longer recommended for new designs. The part operates across a temperature range of -55°C to 100°C and is housed in a 16-SSOP surface mount package.

Due to its obsolete status, identifying equivalent and substitute parts is essential for ongoing production support, legacy system maintenance, and design continuity. Direct replacements and functionally equivalent alternatives are available from active manufacturers including Renesas Electronics Corporation and Toshiba Semiconductor and Storage.

Substiute Parts

PS2801-4-F3

CELIn Stock: 2323PS2801-4-F3 Datasheet

Current PartRFQ

PS2801-4-F3-A

Renesas Electronics CorporationIn Stock: 27710PS2801-4-F3-A Datasheet

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PS2801-4-A

Renesas Electronics CorporationIn Stock: 15550PS2801-4-A Datasheet

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TCMT1106

Vishay Semiconductor Opto DivisionIn Stock: 4173TCMT1106 Datasheet

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TLP291-4(GB,E)

Toshiba Semiconductor and StorageIn Stock: 1000131TLP291-4(GB,E) Datasheet

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TLP291-4(GB-TP,E)

Toshiba Semiconductor and StorageIn Stock: 3237TLP291-4(GB-TP,E) Datasheet

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TLP291-4(TP,E)

Toshiba Semiconductor and StorageIn Stock: 3369TLP291-4(TP,E) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS2801-4-F3 are classified based on strict electrical and mechanical parameter alignment. The substitution logic is determined by the following critical parameters:

Primary Substitution Criteria:

• Number of Channels: 4 channels (direct match required for multi-channel applications)
• Voltage - Isolation: 2500Vrms (minimum isolation voltage specification)
• Output Type: Transistor output configuration
• Current - Output / Channel: 50mA (maximum output current per channel)
• Voltage - Output (Max): 80V (maximum collector-emitter voltage)
• Mounting Type: Surface Mount
• Package Compatibility: 16-SOIC or 16-SO footprint

Secondary Compatibility Parameters:

• Current Transfer Ratio range: 80% to 600% @ 5mA
• Turn On / Turn Off Time: 6µs / 5µs typical
• Vce Saturation: 300mV maximum
• Operating Temperature: -55°C to 100°C minimum

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (Identical Electrical and Mechanical Specifications): Parts PS2801-4-F3-A and PS2801-4-A maintain all critical electrical parameters and package specifications. These are manufactured by Renesas Electronics Corporation and differ only in packaging format (Cut Tape & Digi-Reel versus Strip).

Category 2 - Functional Equivalents (Matching Core Specifications with Minor Parameter Variations): Toshiba TLP291-4 series parts (TLP291-4(GB,E), TLP291-4(GB-TP,E), TLP291-4(TP,E)) provide 4-channel optoisolator functionality with 2500Vrms isolation. These parts maintain identical channel count, isolation voltage, output type, and current ratings. Minor variations exist in switching speed (3µs on/off versus 6µs/5µs) and Vce saturation (400mV versus 300mV), which remain within acceptable operational tolerances for most applications.

Category 3 - Limited Substitution (Single-Channel Alternative): The Vishay TCMT1106 is a single-channel optoisolator with higher isolation voltage (3750Vrms) and different package configuration (4-SOP). This part is not suitable as a direct substitute for 4-channel applications but may be considered for applications requiring only single-channel isolation with enhanced voltage rating.

Parameter Comparison

Engineering Selection Recommendations

For Legacy System Maintenance and Existing Production:

The PS2801-4-F3-A and PS2801-4-A from Renesas Electronics Corporation are the primary substitutes for the obsolete PS2801-4-F3. Both parts maintain identical electrical specifications and package footprints. The PS2801-4-F3-A is available in Cut Tape & Digi-Reel packaging with higher inventory levels (27,700 units), making it suitable for ongoing production requirements. The PS2801-4-A is available in Strip packaging with 15,497 units in stock. Both Renesas parts are ROHS3 compliant, addressing regulatory requirements that the original CEL part does not meet.

For New Design Implementation:

The Toshiba TLP291-4 series (TLP291-4(GB,E), TLP291-4(GB-TP,E), TLP291-4(TP,E)) represents the recommended choice for new designs. All three variants are classified as Active products, ensuring long-term availability and manufacturer support. These parts maintain the critical 4-channel configuration, 2500Vrms isolation voltage, 80V maximum output voltage, and 50mA per-channel current rating. The TLP291-4 series demonstrates improved switching performance (3µs on/off time versus 6µs/5µs) and extended operating temperature range (-55°C to 110°C versus -55°C to 100°C). All variants are ROHS3 compliant and REACH unaffected.

Packaging and Availability Considerations:

• TLP291-4(GB,E): Tube packaging with highest inventory (1,000,100 units) for high-volume applications
• TLP291-4(GB-TP,E): Cut Tape & Digi-Reel packaging (3,200 units) for standard production
• TLP291-4(TP,E): Cut Tape & Digi-Reel packaging (3,300 units) with lower minimum current transfer ratio (50% @ 5mA)

Compliance and Regulatory Status:

The original PS2801-4-F3 is RoHS non-compliant and REACH affected. All recommended substitutes (Renesas PS2801-4-F3-A, PS2801-4-A, and Toshiba TLP291-4 series) are ROHS3 compliant. The Toshiba variants are REACH unaffected, providing superior regulatory positioning for international applications.

Package Footprint Compatibility:

The Renesas substitutes maintain the exact 16-SOIC footprint (0.173", 4.40mm width) of the original PS2801-4-F3, enabling direct PCB replacement without layout modifications. The Toshiba TLP291-4 series uses a slightly wider 16-SOIC footprint (0.179", 4.55mm width), which remains compatible with standard 16-SOIC land patterns but requires verification of PCB layout clearances in space-constrained applications.

Frequently Asked Questions (FAQ)

Q1: Can the PS2801-4-F3-A be used as a direct replacement for the PS2801-4-F3?

A: Yes. The PS2801-4-F3-A maintains identical electrical specifications including 4-channel configuration, 2500Vrms isolation voltage, 80% to 600% current transfer ratio, 6µs/5µs switching time, and 300mV Vce saturation. The package footprint is identical (16-SOIC, 0.173", 4.40mm width). The primary difference is improved RoHS compliance (ROHS3 versus non-compliant) and higher inventory availability. No circuit modifications are required.

Q2: What are the key differences between the Renesas PS2801-4-A and the Toshiba TLP291-4 series?

A: Both maintain the critical 4-channel, 2500Vrms isolation specification and 50mA per-channel output current. The Toshiba TLP291-4 series offers faster switching performance (3µs on/off versus 6µs/5µs), extended temperature range (-55°C to 110°C versus -55°C to 100°C), and active product status ensuring long-term availability. The Renesas PS2801-4-A is classified as "Not For New Designs" but remains suitable for legacy system support. The Toshiba parts have a slightly wider package footprint (0.179" versus 0.173"), which requires PCB layout verification.

Q3: Is the Vishay TCMT1106 suitable as a substitute for the PS2801-4-F3?

A: No. The TCMT1106 is a single-channel optoisolator, whereas the PS2801-4-F3 is a 4-channel device. While the TCMT1106 offers higher isolation voltage (3750Vrms) and is an active product, it cannot replace the PS2801-4-F3 in applications requiring 4-channel isolation. The TCMT1106 is suitable only for applications requiring single-channel isolation with enhanced voltage rating.

Q4: Which TLP291-4 variant should be selected for new production?

A: For high-volume production, TLP291-4(GB,E) in Tube packaging is recommended due to maximum inventory availability (1,000,100 units). For standard production runs, TLP291-4(GB-TP,E) or TLP291-4(TP,E) in Cut Tape & Digi-Reel packaging are appropriate. The TLP291-4(TP,E) variant has a lower minimum current transfer ratio (50% @ 5mA) compared to 100% for the other variants; verify this specification against circuit requirements before selection.

Q5: Are there any PCB layout considerations when switching from PS2801-4-F3 to TLP291-4?

A: Yes. The Toshiba TLP291-4 series has a slightly wider package footprint (0.179" versus 0.173" width). While both use 16-SOIC packages, the increased width may affect PCB layout in space-constrained designs. Verify that existing PCB land patterns accommodate the wider package, or confirm that standard 16-SOIC footprints provide sufficient clearance. The pin configuration and spacing remain compatible.

Q6: What is the impact of the 100mV difference in Vce saturation between PS2801-4-F3 and TLP291-4?

A: The PS2801-4-F3 specifies 300mV maximum Vce saturation, while the TLP291-4 series specifies 400mV maximum. This 100mV difference results in slightly higher output voltage drop across the transistor in saturation. For most applications, this difference is negligible. However, in circuits with tight output voltage margins or high output current demands, verify that the 400mV saturation voltage remains acceptable for system operation.

Q7: Can the PS2801-4-F3 be used in new designs?

A: No. The PS2801-4-F3 is classified as obsolete and is not recommended for new designs. For new product development, select from the active Toshiba TLP291-4 series variants. For legacy system maintenance and ongoing production of existing products, the Renesas PS2801-4-F3-A or PS2801-4-A are appropriate substitutes.

Q8: What is the significance of RoHS compliance in selecting a substitute?

A: RoHS compliance is a regulatory requirement for products sold in the European Union and many other markets. The original PS2801-4-F3 is RoHS non-compliant, which may restrict its use in new applications or markets with RoHS requirements. All recommended substitutes (Renesas PS2801-4-F3-A, PS2801-4-A, and Toshiba TLP291-4 series) are ROHS3 compliant, ensuring compliance with current and future regulatory standards.

Q9: How does the extended temperature range of TLP291-4 (-55°C to 110°C) compare to PS2801-4-F3 (-55°C to 100°C)?

A: The TLP291-4 series provides an additional 10°C of maximum operating temperature (110°C versus 100°C). This extended range is beneficial for applications in high-temperature environments or systems with limited thermal management. For applications operating within the -55°C to 100°C range, both parts are suitable. For applications approaching or exceeding 100°C, the TLP291-4 series is preferred.

Q10: What packaging formats are available for each substitute part?

A: PS2801-4-F3-A is available in Cut Tape & Digi-Reel format. PS2801-4-A is available in Strip format. TLP291-4(GB,E) is available in Tube format. TLP291-4(GB-TP,E) and TLP291-4(TP,E) are available in Cut Tape & Digi-Reel format. Select packaging based on production volume and assembly equipment compatibility. High-volume automated assembly typically uses Cut Tape & Digi-Reel or Tube formats.