PS2801-4-F3-A Equivalent & Substitute Parts

Part Overview

The PS2801-4-F3-A is a 4-channel optoisolator with transistor output manufactured by CEL, featuring 2500Vrms isolation voltage and rated for 50mA per channel output current. This component is designed for applications requiring galvanic isolation in signal transmission across high-voltage boundaries.

The PS2801-4-F3-A has been discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this optoisolator.

Key Parameters

Parameter	Value
Number of Channels	4
Voltage - Isolation	2500Vrms
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Turn On / Turn Off Time (Typ)	6µs, 5µs
Rise / Fall Time (Typ)	3µs, 5µs
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Vce Saturation (Max)	300mV
Operating Temperature	-55°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the PS2801-4-F3-A are classified based on strict parameter alignment within the optoisolator transistor output category. The substitution logic is determined by the following critical parameters:

Primary Substitution Criteria:

Number of Channels: 4 channels required
Voltage - Isolation: 2500Vrms minimum
Output Type: Transistor output
Current - Output / Channel: 50mA minimum
Mounting Type: Surface Mount
Current Transfer Ratio range compatibility
Operating Temperature range coverage

Substitution Categories:

Direct Manufacturer Equivalent: PS2801-4-A shares identical electrical specifications, isolation voltage, channel count, and output current rating. This part differs only in product status (Not For New Designs) and REACH compliance status.

Parametric Equivalents: TLP291-4 variants (GB,E), (GB-TP,E), and (TP,E) meet all critical electrical parameters including 2500Vrms isolation, 4-channel configuration, 50mA output current, and transistor output type. These parts maintain compatibility with the primary design requirements while offering active product status.

Similar Category Part: TCMT1106 operates at higher isolation voltage (3750Vrms) but features only 1 channel, making it unsuitable for direct substitution in 4-channel applications.

Parameter Comparison

Parameter	PS2801-4-F3-A (Main)	PS2801-4-A	TLP291-4(GB,E)	TLP291-4(GB-TP,E)	TLP291-4(TP,E)
Manufacturer	CEL	Renesas Electronics	Toshiba Semiconductor	Toshiba Semiconductor	Toshiba Semiconductor
Number of Channels	4	4	4	4	4
Voltage - Isolation	2500Vrms	2500Vrms	2500Vrms	2500Vrms	2500Vrms
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	100% @ 5mA	100% @ 5mA	50% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA
Turn On / Turn Off Time (Typ)	6µs, 5µs	6µs, 5µs	3µs, 3µs	3µs, 3µs	3µs, 3µs
Rise / Fall Time (Typ)	3µs, 5µs	3µs, 5µs	2µs, 3µs	2µs, 3µs	2µs, 3µs
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.1V	1.1V	1.2V	1.2V	1.2V
Vce Saturation (Max)	300mV	300mV	400mV	400mV	400mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	16-SOIC (0.173", 4.40mm)	16-SOIC (0.173", 4.40mm)	16-SOIC (0.179", 4.55mm)	16-SOIC (0.179", 4.55mm)	16-SOIC (0.179", 4.55mm)
Product Status	Discontinued at DiGi Electronics	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

PS2801-4-A (Renesas Electronics Corporation): This part provides direct electrical equivalence to the PS2801-4-F3-A with identical specifications across all critical parameters. However, the product status is listed as "Not For New Designs," indicating limited long-term availability. This part is suitable for legacy system support and replacement applications where existing inventory exists. REACH compliance status differs from the main part.

TLP291-4(GB,E), TLP291-4(GB-TP,E), and TLP291-4(TP,E) (Toshiba Semiconductor and Storage): These three variants meet all functional requirements for 4-channel, 2500Vrms isolation optoisolators with 50mA output current. All three carry Active product status, ensuring ongoing availability and support. The TLP291-4 series demonstrates improved switching performance with faster turn-on/turn-off times (3µs vs. 6µs) and rise/fall times (2µs vs. 3µs). Operating temperature range extends to 110°C, providing broader thermal coverage. Package dimensions differ slightly (0.179" vs. 0.173" width), requiring PCB layout verification. Vce saturation is slightly higher at 400mV versus 300mV. Current Transfer Ratio specifications vary: TLP291-4(GB,E) and TLP291-4(GB-TP,E) specify 100% minimum, while TLP291-4(TP,E) specifies 50% minimum. All three variants are ROHS3 compliant and REACH unaffected.

TCMT1106 (Vishay Semiconductor Opto Division): This part is not suitable as a direct substitute due to single-channel configuration versus the required 4-channel design. While it offers higher isolation voltage (3750Vrms), it cannot fulfill the multi-channel isolation requirements of the PS2801-4-F3-A application.

Frequently Asked Questions (FAQ)

Q: Can PS2801-4-A directly replace PS2801-4-F3-A in existing designs?

A: PS2801-4-A provides identical electrical specifications and meets all functional requirements. However, verify packaging compatibility and confirm that REACH compliance status aligns with your supply chain requirements. The "Not For New Designs" status indicates limited future availability.

Q: What are the key differences between PS2801-4-F3-A and TLP291-4 variants?

A: Both maintain 2500Vrms isolation and 4-channel configuration. TLP291-4 variants offer faster switching performance (3µs turn-on vs. 6µs) and extended operating temperature to 110°C. Package width differs by 0.006" (0.179" vs. 0.173"), requiring PCB layout verification. Vce saturation is 100mV higher in TLP291-4 variants. All TLP291-4 variants carry Active product status.

Q: Which TLP291-4 variant should be selected: (GB,E), (GB-TP,E), or (TP,E)?

A: All three variants are electrically equivalent except for Current Transfer Ratio minimum specification. TLP291-4(TP,E) specifies 50% minimum CTR, while (GB,E) and (GB-TP,E) specify 100% minimum. Selection depends on your circuit's CTR requirements. Packaging differs: (GB,E) is supplied in Tube, while (GB-TP,E) and (TP,E) are supplied in Cut Tape with Digi-Reel.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. PS2801-4-A, TLP291-4(GB,E), TLP291-4(GB-TP,E), and TLP291-4(TP,E) are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the impact of package dimension differences between PS2801-4-F3-A and TLP291-4?

A: Package width differs by 0.006" (4.40mm vs. 4.55mm). Both use 16-SOIC form factor with identical pin pitch. Verify PCB footprint compatibility and confirm that board layout accommodates the slightly wider package before implementation.

Q: Can TCMT1106 be used as a substitute?

A: No. TCMT1106 is a single-channel optoisolator, while PS2801-4-F3-A requires 4-channel functionality. TCMT1106 is not suitable for this application.

Q: What is the product status significance for long-term supply planning?

A: PS2801-4-F3-A is discontinued at DiGi Electronics. PS2801-4-A carries "Not For New Designs" status, indicating limited future support. TLP291-4 variants (all three) carry Active status, ensuring ongoing manufacturing and availability for long-term production requirements.

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