PS2505L-1 Equivalent & Substitute Parts

Part Overview

The PS2505L-1 is a 5000Vrms optoisolator with transistor output, single channel configuration, and 4-SMD surface mount packaging. Manufactured by CEL in the NEPOC series, this component is classified as obsolete. Due to its obsolete product status, equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

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
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Input Type	AC, DC

Substitute Part Grouping Explanation

Substitution eligibility for the PS2505L-1 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Isolation: 5000Vrms (mandatory match)
Number of Channels: 1 (mandatory match)
Output Type: Transistor (mandatory match)
Package / Case: 4-SMD, Gull Wing (mandatory match)
Mounting Type: Surface Mount (mandatory match)
Input Type: AC, DC (mandatory match)

Secondary Compatibility Parameters:

Current - Output / Channel: 50mA minimum
Vce Saturation (Max): 300mV or lower
Operating Temperature range must encompass application requirements

Substitute parts are classified into two categories:

Direct Equivalents: Parts with identical or superior electrical specifications across all critical parameters, enabling drop-in replacement without circuit modification.

Similar Alternatives: Parts meeting primary substitution criteria with variations in secondary parameters, requiring design review for specific application compatibility.

Parameter Comparison

Parameter	PS2505L-1 (Main)	PS2505L-1-A (Direct)	OCP-PCT124/A-TR (Direct)	LTV-814HS (Similar)	LTV-814HS-TA1 (Similar)
Manufacturer	CEL	Renesas Electronics	Lumex Opto/Components Inc.	Lite-On Inc.	Lite-On Inc.
Product Status	Obsolete	Active	Active	Active	Active
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms
Number of Channels	1	1	1	1	1
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	60% @ 1mA	20% @ 100mA	20% @ 100mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	600% @ 1mA	80% @ 100mA	80% @ 100mA
Rise / Fall Time (Typ)	3µs, 5µs	3µs, 5µs	5µs, 4µs	4µs, 3µs	4µs, 3µs
Input Type	AC, DC	AC, DC	AC, DC	AC, DC	AC, DC
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	60V	35V	35V
Current - Output / Channel	50mA	50mA	50mA	80mA	80mA
Voltage - Forward (Vf) (Typ)	1.17V	1.17V	1.2V	1.4V	1.4V
Current - DC Forward (If) (Max)	80 mA	80 mA	50 mA	150 mA	150 mA
Vce Saturation (Max)	300mV	300mV	300mV	200mV	200mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 100°C
Mounting Type	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
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Affected	REACH Affected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

PS2505L-1-A (Renesas Electronics Corporation)

The PS2505L-1-A is a direct equivalent substitute for the PS2505L-1. This part maintains identical electrical specifications including current transfer ratio (80% @ 5mA minimum, 600% @ 5mA maximum), output voltage (80V maximum), and operating temperature range (-55°C ~ 100°C). The PS2505L-1-A is classified as Active product status, ensuring long-term availability. The part is ROHS3 compliant, addressing regulatory requirements superior to the obsolete main part. Selection of PS2505L-1-A is appropriate for applications requiring full parameter compatibility without circuit redesign.

OCP-PCT124/A-TR (Lumex Opto/Components Inc.)

The OCP-PCT124/A-TR qualifies as a direct substitute based on matching isolation voltage (5000Vrms), channel count (1), output type (Transistor), and package configuration (4-SMD, Gull Wing). This part exhibits lower current transfer ratio minimum (60% @ 1mA) and reduced maximum output voltage (60V versus 80V). The operating temperature range is limited to -30°C ~ 100°C, excluding low-temperature operation below -30°C. The OCP-PCT124/A-TR is ROHS3 compliant and REACH unaffected. Selection is appropriate for applications operating within the -30°C to 100°C temperature window and not requiring output voltages exceeding 60V.

LTV-814HS and LTV-814HS-TA1 (Lite-On Inc.)

The LTV-814HS and LTV-814HS-TA1 are similar alternative substitutes meeting primary substitution criteria (5000Vrms isolation, 1 channel, transistor output, 4-SMD package). These parts exhibit significantly different secondary parameters: maximum output voltage is 35V (versus 80V), current transfer ratio is substantially lower (20% @ 100mA minimum, 80% @ 100mA maximum), and operating temperature range is -30°C ~ 100°C. The Vce saturation is superior at 200mV maximum. Both variants are ROHS3 compliant and REACH unaffected. The LTV-814HS-TA1 is supplied in Tape & Reel packaging, while LTV-814HS is supplied in Tube packaging. Selection of these parts requires design review to confirm compatibility with reduced output voltage and current transfer ratio specifications.

Frequently Asked Questions (FAQ)

Q: Can PS2505L-1-A be used as a direct replacement for PS2505L-1 without circuit modification?

A: Yes. The PS2505L-1-A maintains identical electrical specifications across all critical parameters including isolation voltage (5000Vrms), current transfer ratio (80% @ 5mA minimum), maximum output voltage (80V), and operating temperature range (-55°C ~ 100°C). The 4-SMD, Gull Wing package is identical. No circuit modification is required.

Q: What are the key differences between PS2505L-1-A and OCP-PCT124/A-TR?

A: Both parts meet primary substitution criteria with 5000Vrms isolation and 4-SMD packaging. The OCP-PCT124/A-TR has lower current transfer ratio minimum (60% @ 1mA versus 80% @ 5mA), reduced maximum output voltage (60V versus 80V), and limited operating temperature range (-30°C ~ 100°C versus -55°C ~ 100°C). Applications requiring output voltages above 60V or operation below -30°C must use PS2505L-1-A.

Q: Are LTV-814HS and LTV-814HS-TA1 suitable replacements for PS2505L-1?

A: LTV-814HS and LTV-814HS-TA1 meet primary substitution criteria (5000Vrms isolation, 1 channel, transistor output, 4-SMD package) but exhibit reduced secondary specifications. Maximum output voltage is 35V (versus 80V), and current transfer ratio is lower (20% @ 100mA minimum versus 80% @ 5mA minimum). These parts are suitable only for applications compatible with 35V maximum output voltage and lower current transfer ratios. Design review is required.

Q: What is the difference between LTV-814HS and LTV-814HS-TA1?

A: LTV-814HS and LTV-814HS-TA1 are electrically identical. The difference is packaging: LTV-814HS is supplied in Tube packaging, while LTV-814HS-TA1 is supplied in Tape & Reel (TR) packaging. Selection depends on assembly process requirements and volume considerations.

Q: Does the PS2505L-1-A have better regulatory compliance than the original PS2505L-1?

A: Yes. The PS2505L-1-A is ROHS3 compliant, whereas the PS2505L-1 is RoHS non-compliant. Both parts are REACH affected. For applications requiring RoHS compliance, PS2505L-1-A is the appropriate selection.

Q: Are OCP-PCT124/A-TR, LTV-814HS, and LTV-814HS-TA1 REACH compliant?

A: OCP-PCT124/A-TR, LTV-814HS, and LTV-814HS-TA1 are all REACH unaffected, providing superior regulatory status compared to the PS2505L-1 (REACH affected) and PS2505L-1-A (REACH affected).

Q: What is the moisture sensitivity level for all substitute parts?

A: All substitute parts (PS2505L-1-A, OCP-PCT124/A-TR, LTV-814HS, LTV-814HS-TA1) have Moisture Sensitivity Level (MSL) of 1 (Unlimited), matching the original PS2505L-1. No special moisture handling precautions are required beyond standard component storage practices.

Q: Can I use OCP-PCT124/A-TR in an application requiring -55°C operation?

A: No. The OCP-PCT124/A-TR operating temperature range is -30°C ~ 100°C. Applications requiring operation at -55°C must use PS2505L-1-A, which supports -55°C ~ 100°C.

Q: Which substitute part has the best Vce saturation performance?

A: LTV-814HS and LTV-814HS-TA1 have the lowest Vce saturation at 200mV maximum, compared to 300mV maximum for PS2505L-1, PS2505L-1-A, and OCP-PCT124/A-TR. Lower saturation voltage reduces power dissipation in the output transistor.

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