PS2505-1 Optoisolator 5KV Transistor Output Equivalent & Substitute Parts

Part Overview

The PS2505-1 is a 5000Vrms isolation optoisolator with transistor output in 4-DIP package manufactured by CEL. This component is classified as Obsolete, indicating it is no longer in active production. Substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades. Alternative models from active manufacturers provide equivalent electrical performance while offering improved availability and compliance with current regulatory standards.

Key Parameters

Parameter	Value
Voltage - Isolation	5000Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Vce Saturation (Max)	300mV
Operating Temperature	-55°C ~ 100°C
Package / Case	4-DIP (0.300", 7.62mm)
Input Type	AC, DC
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitute parts for the PS2505-1 are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Electrical & Mechanical Equivalence): Parts that match all critical parameters: 5000Vrms isolation voltage, 1 channel, transistor output, 4-DIP package (0.300", 7.62mm), 50mA output current, and operating temperature range -55°C to 100°C. These parts maintain identical electrical performance specifications.

Similar Substitutes (Functional Compatibility with Parameter Variations): Parts that provide 5000Vrms isolation and transistor output in 4-DIP package but differ in one or more secondary parameters such as current transfer ratio ranges, maximum output voltage, or operating temperature limits. These parts are functionally compatible but require design review for specific application constraints.

Critical Parameters for Substitution:

Isolation voltage: 5000Vrms minimum
Package type: 4-DIP (0.300", 7.62mm) for direct substitutes
Output type: Transistor
Number of channels: 1
Current - Output / Channel: 50mA minimum
Vce Saturation: 300mV maximum

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	CTR Min @ Test	CTR Max @ Test	Vout Max	Iout / Channel	Vce Sat Max	Temp Range	Package	Status	RoHS
PS2505-1	CEL	5000Vrms	80% @ 5mA	600% @ 5mA	80V	50mA	300mV	-55°C ~ 100°C	4-DIP (0.300")	Obsolete	Non-compliant
PS2505-1-A	Renesas Electronics	5000Vrms	80% @ 5mA	600% @ 5mA	80V	50mA	300mV	-55°C ~ 100°C	4-DIP (0.300")	Not For New Designs	ROHS3 Compliant
PS2565-1-A	Renesas Electronics	5000Vrms	80% @ 5mA	400% @ 5mA	80V	50mA	300mV	-55°C ~ 100°C	4-DIP (0.300")	Active	ROHS3 Compliant
PS2565-1-V-A	Renesas Electronics	5000Vrms	80% @ 5mA	400% @ 5mA	80V	50mA	300mV	-55°C ~ 100°C	4-DIP (0.300")	Active	ROHS3 Compliant
PS2565-1Y-A	Renesas Electronics	5000Vrms	80% @ 5mA	400% @ 5mA	80V	50mA	300mV	-55°C ~ 100°C	4-DIP (0.300")	Active	ROHS3 Compliant
PS2565-1Y-V-A	Renesas Electronics	5000Vrms	80% @ 5mA	400% @ 5mA	80V	50mA	300mV	-55°C ~ 100°C	4-DIP (0.300")	Active	ROHS3 Compliant
OCP-PCT124/A	Lumex Opto/Components	5000Vrms	60% @ 1mA	600% @ 1mA	60V	50mA	300mV	-30°C ~ 100°C	4-DIP (0.300")	Active	ROHS3 Compliant
LTV-814	Lite-On Inc.	5000Vrms	20% @ 1mA	300% @ 1mA	35V	50mA	200mV	-30°C ~ 110°C	4-DIP (0.300")	Active	ROHS3 Compliant
LTV-814HM	Lite-On Inc.	5000Vrms	20% @ 100mA	80% @ 100mA	35V	80mA	200mV	-30°C ~ 100°C	4-DIP (0.400")	Active	ROHS3 Compliant
SFH620A-3	Vishay Semiconductor	5300Vrms	100% @ 10mA	320% @ 10mA	70V	50mA	400mV	-55°C ~ 100°C	4-DIP (0.300")	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

PS2565-1-A, PS2565-1-V-A, PS2565-1Y-A, and PS2565-1Y-V-A from Renesas Electronics Corporation are direct electrical equivalents to PS2505-1. All four parts maintain identical isolation voltage (5000Vrms), output voltage (80V), saturation voltage (300mV), and operating temperature range (-55°C to 100°C). These parts are manufactured by Renesas, a primary supplier in the optoisolator market, and carry ROHS3 compliance certification. PS2565-1-A and PS2565-1-V-A are classified as Active products, ensuring long-term availability. PS2565-1Y-A and PS2565-1Y-V-A are also Active with REACH Unaffected status, providing additional regulatory flexibility.

For Applications with Relaxed Temperature Requirements:

OCP-PCT124/A from Lumex Opto/Components Inc. provides 5000Vrms isolation in 4-DIP package with 50mA output current and 300mV saturation voltage. This part operates over -30°C to 100°C, which is suitable for applications not requiring the full -55°C lower temperature limit. OCP-PCT124/A is Active and ROHS3 compliant.

For Applications with Lower Output Voltage Requirements:

LTV-814 from Lite-On Inc. provides 5000Vrms isolation with maximum output voltage of 35V and improved saturation voltage (200mV). This part is suitable for low-voltage output applications and operates over -30°C to 110°C. LTV-814 is Active and ROHS3 compliant.

For High-Current Output Applications:

LTV-814HM from Lite-On Inc. supports 80mA output current per channel (compared to 50mA standard), with 5000Vrms isolation and 200mV saturation voltage. Package dimensions are 4-DIP (0.400", 10.16mm), which differs from the standard 0.300" footprint. This part is suitable only if PCB layout accommodates the larger package.

For Enhanced Isolation Voltage Margin:

SFH620A-3 from Vishay Semiconductor Opto Division provides 5300Vrms isolation (300V higher than PS2505-1), maintaining 50mA output current and -55°C to 100°C operating range. This part is suitable for applications requiring additional isolation margin and is Active with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can PS2565-1-A directly replace PS2505-1 in existing designs?

A: Yes. PS2565-1-A is electrically identical to PS2505-1 across all critical parameters: 5000Vrms isolation, 80% minimum current transfer ratio at 5mA, 80V maximum output voltage, 50mA output current, 300mV saturation voltage, and -55°C to 100°C operating range. Both use 4-DIP (0.300", 7.62mm) package. PCB layout and component placement require no modification.

Q: What is the difference between PS2565-1-A and PS2565-1Y-A?

A: Both parts are electrically identical in isolation voltage, output voltage, saturation voltage, and operating temperature. The primary difference is REACH compliance status: PS2565-1-A is REACH Affected, while PS2565-1Y-A is REACH Unaffected. Selection depends on regulatory requirements for your target market.

Q: Why does OCP-PCT124/A have lower maximum output voltage (60V vs 80V)?

A: OCP-PCT124/A is designed for applications requiring lower output voltage levels. The 60V maximum output voltage is a design characteristic of this part. Applications requiring 80V output must use PS2505-1, PS2505-1-A, PS2565 series, or SFH620A-3.

Q: Can LTV-814HM be used as a substitute if my PCB has space constraints?

A: LTV-814HM uses 4-DIP (0.400", 10.16mm) package, which is larger than the standard 4-DIP (0.300", 7.62mm) used by PS2505-1. Substitution is possible only if your PCB layout accommodates the larger footprint. Additionally, LTV-814HM has lower maximum output voltage (35V) and different current transfer ratio characteristics, requiring design verification.

Q: Is SFH620A-3 a suitable substitute for all PS2505-1 applications?

A: SFH620A-3 provides higher isolation voltage (5300Vrms vs 5000Vrms) and is electrically compatible with PS2505-1 for most parameters. However, it has higher saturation voltage (400mV vs 300mV) and different current transfer ratio test conditions (100% @ 10mA vs 80% @ 5mA). Applications sensitive to saturation voltage or requiring specific current transfer ratio at 5mA input should be reviewed before substitution.

Q: What is the inventory status for substitute parts?

A: PS2565-1-V-A has the highest inventory (28,987 pcs), followed by LTV-814 (57,024 pcs) and SFH620A-3 (32,319 pcs). PS2505-1-A has 25,300 pcs available. For long-term supply chain planning, Renesas PS2565 series and Lite-On LTV-814 offer the most stable availability.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant. The original PS2505-1 is RoHS non-compliant. If your application or market requires RoHS compliance, any of the listed substitutes satisfy this requirement.

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