PS2701-1-F3 Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2701-1-F3 is a 3750Vrms isolation optoisolator with transistor output, manufactured by CEL in a 4-SMD surface mount package. This component features single-channel isolation suitable for DC input applications with 80mA output current capability and 40V maximum output voltage.

The PS2701-1-F3 carries an Obsolete product status. Locating functionally equivalent alternatives is necessary for ongoing production support, design continuity, and component availability assurance.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Transistor
Input Type	DC
Current Transfer Ratio (Min)	50% @ 5mA
Current Transfer Ratio (Max)	300% @ 5mA
Maximum Output Voltage	40V
Output Current per Channel	80mA
Vce Saturation (Max)	300mV
Operating Temperature Range	-55°C to 100°C
Mounting Type	Surface Mount
Package Type	4-SMD, Gull Wing

Substitute Part Grouping Explanation

Substitution eligibility for the PS2701-1-F3 is determined by the following critical parameters:

Primary Substitution Criteria:

Isolation voltage: 3750Vrms (exact match required)
Number of channels: 1 (exact match required)
Output type: Transistor (exact match required)
Input type: DC (exact match required)
Current Transfer Ratio range: 50% to 300% @ 5mA (minimum acceptable)
Maximum output voltage: 40V or greater
Output current per channel: 80mA or greater
Vce saturation: 300mV or lower
Operating temperature range: Must encompass -55°C to 100°C minimum
Mounting type: Surface Mount (exact match required)
Package configuration: 4-SMD, Gull Wing (exact match required)

Substitute parts are categorized as follows:

Direct Manufacturer Substitutes: Parts with identical electrical specifications and package configuration from alternative manufacturers.

Upgrade Substitutes: Parts with identical core electrical specifications but improved product status (Active vs. Obsolete) and enhanced compliance certifications.

Parametric Equivalents: Parts with matching electrical parameters and active product status from the original manufacturer, offering design continuity with improved availability.

Similar Alternatives: Parts meeting all critical electrical parameters with minor variations in secondary characteristics (rise/fall time, output current, output voltage) and different package designations.

Parameter Comparison

Parameter	PS2701-1-F3 (Main)	PS2701-1-F3-A	FODM2701	FODM2701R2	LTV-357T	PS2701-1-F3-H-A	PS2701-1-F3-Y-A	PS2701-1-V-F3-H-A	PS2701-1-V-F3-Y-A
Manufacturer	CEL	Renesas Electronics	onsemi	onsemi	Lite-On Inc.	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics
Isolation Voltage	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms
Number of Channels	1	1	1	1	1	1	1	1	1
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Input Type	DC	DC	DC	DC	DC	DC	DC	DC	DC
CTR Min @ 5mA	50%	50%	50%	50%	50%	50%	50%	50%	50%
CTR Max @ 5mA	300%	300%	300%	300%	600%	300%	300%	300%	300%
Rise Time (Typ)	3µs	3µs	3µs	3µs	4µs	3µs	3µs	3µs	3µs
Fall Time (Typ)	5µs	5µs	3µs	3µs	3µs	5µs	5µs	5µs	5µs
Voltage - Output (Max)	40V	40V	40V	40V	35V	40V	40V	40V	40V
Current - Output / Channel	80mA	80mA	80mA	80mA	50mA	80mA	80mA	80mA	80mA
Voltage - Forward (Vf) Typ	1.1V	1.1V	1.4V	1.4V	1.2V	1.1V	1.1V	1.1V	1.1V
Current - DC Forward (If) Max	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA
Vce Saturation (Max)	300mV	300mV	300mV	300mV	200mV	300mV	300mV	300mV	300mV
Operating Temperature	-55°C to 100°C	-55°C to 100°C	-40°C to 110°C	-40°C to 110°C	-55°C to 110°C	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Product Status	Obsolete	Not For New Designs	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Affected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For Direct Replacement (Existing Designs):

PS2701-1-F3-A (Renesas Electronics Corporation) serves as the primary direct substitute. This part maintains identical electrical specifications and package configuration. Although designated "Not For New Designs," it provides functional equivalence for existing applications requiring the PS2701-1-F3. The part achieves ROHS3 compliance and REACH unaffected status, addressing regulatory constraints of the original obsolete component.

For New Designs and Long-Term Production:

FODM2701 or FODM2701R2 (onsemi) are recommended for new designs and production continuity. Both parts carry Active product status, ensuring long-term availability and manufacturer support. These onsemi alternatives maintain the 3750Vrms isolation voltage, single-channel transistor output, and 80mA output current specification. Operating temperature range extends to 110°C maximum, providing enhanced thermal margin. ROHS3 compliance and REACH unaffected status satisfy modern regulatory requirements. FODM2701R2 is supplied in Cut Tape and Digi-Reel packaging, supporting automated assembly processes.

For Applications Requiring Extended Temperature Range:

PS2701-1-F3-H-A, PS2701-1-F3-Y-A, PS2701-1-V-F3-H-A, and PS2701-1-V-F3-Y-A (Renesas Electronics Corporation) maintain the original -55°C to 100°C operating range with Active product status. These parametric equivalents preserve design continuity within the NEPOC series while offering improved availability and ROHS3/REACH compliance.

For Applications with Lower Output Current Requirements:

LTV-357T (Lite-On Inc.) qualifies as a functional alternative where 50mA output current satisfies application requirements. This part maintains 3750Vrms isolation and transistor output configuration. The LTV-357T exhibits superior Vce saturation (200mV maximum) and extended operating temperature to 110°C. Current Transfer Ratio maximum reaches 600%, providing enhanced gain characteristics. Package designation differs (4-SOP vs. 4-SMD), requiring PCB layout verification for mechanical compatibility.

Compliance Considerations:

The original PS2701-1-F3 carries RoHS non-compliant and REACH Affected designations. All substitute parts listed achieve ROHS3 compliance and REACH unaffected status, satisfying current regulatory frameworks for electronics manufacturing and distribution.

Frequently Asked Questions (FAQ)

Q: Can PS2701-1-F3-A directly replace PS2701-1-F3 in existing circuit boards?

A: Yes. PS2701-1-F3-A maintains identical electrical specifications, isolation voltage (3750Vrms), output current (80mA), and package configuration (4-SMD, Gull Wing). No circuit modifications are required. The part is functionally equivalent for existing designs.

Q: Why is FODM2701 recommended over PS2701-1-F3-A for new designs?

A: FODM2701 carries Active product status, ensuring manufacturer support and long-term availability. PS2701-1-F3-A is designated "Not For New Designs," indicating limited future production commitment. For production continuity and supply chain stability, Active-status components are preferred in new designs.

Q: What is the difference between FODM2701 and FODM2701R2?

A: Both parts are electrically identical with Active product status. The primary difference is packaging: FODM2701 is supplied in Tube packaging, while FODM2701R2 is supplied in Cut Tape and Digi-Reel format. FODM2701R2 is optimized for automated assembly processes requiring tape-and-reel delivery.

Q: Can LTV-357T replace PS2701-1-F3 in all applications?

A: LTV-357T is functionally equivalent for applications where 50mA output current is sufficient. The PS2701-1-F3 provides 80mA output current. If the application requires the full 80mA output capability, LTV-357T is not suitable. Additionally, LTV-357T uses 4-SOP package designation; verify PCB footprint compatibility before substitution.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed achieve ROHS3 compliance. The original PS2701-1-F3 is RoHS non-compliant. Substitution with any listed alternative satisfies RoHS compliance requirements for current manufacturing standards.

Q: What is the significance of the REACH Unaffected status on substitute parts?

A: REACH Unaffected status indicates the component does not contain substances of very high concern (SVHC) listed under EU REACH regulations. The original PS2701-1-F3 carries REACH Affected status. Substitution with REACH Unaffected alternatives eliminates regulatory compliance risk in EU markets and regions adopting equivalent standards.

Q: Do the Renesas parametric equivalents (PS2701-1-F3-H-A, PS2701-1-F3-Y-A, PS2701-1-V-F3-H-A, PS2701-1-V-F3-Y-A) offer any advantages over the original PS2701-1-F3?

A: These parts maintain identical electrical specifications and operating temperature range (-55°C to 100°C) as the original. Primary advantages are Active product status, ROHS3 compliance, and REACH unaffected designation. They provide design continuity within the NEPOC series with improved regulatory compliance and manufacturer support.

Q: What is the difference between 4-SMD and 4-SOP package designations?

A: Both are surface mount packages with four leads in gull wing configuration. 4-SMD and 4-SOP refer to different manufacturing standards and lead geometry specifications. While functionally equivalent, PCB footprints may differ slightly. Verify footprint compatibility in design documentation before substituting parts with different package designations.

Q: Is the extended operating temperature range (-40°C to 110°C) of FODM2701 beneficial for all applications?

A: Extended temperature range provides additional thermal margin and is beneficial for applications operating in elevated ambient temperatures or with thermal cycling. For applications operating within -55°C to 100°C, the extended range offers no functional advantage but does not introduce compatibility issues.

Q: Can multiple substitute parts be used interchangeably within a single production run?

A: Yes, provided all parts meet the electrical specifications required by the application. However, for production consistency and supply chain management, using a single qualified substitute part is recommended. If multiple substitutes are used, document the substitution in design records and verify electrical performance through testing protocols.

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