PS2506-1 Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2506-1 is a 5000Vrms isolation optoisolator with Darlington output configuration, designed for single-channel isolation applications requiring high voltage isolation in 4-DIP through-hole packaging. This component features a current transfer ratio of 200% minimum at 1mA input and supports both AC and DC input types with a maximum output current of 200mA per channel.

The PS2506-1 carries an Obsolete product status, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical and mechanical compatibility across isolation voltage, output characteristics, package configuration, and thermal operating range.

Key Parameters

Parameter	Value
Voltage - Isolation	5000Vrms
Number of Channels	1
Current Transfer Ratio (Min)	200% @ 1mA
Output Type	Darlington
Voltage - Output (Max)	40V
Current - Output / Channel	200mA
Rise / Fall Time (Typ)	100µs, 100µs
Input Type	AC, DC
Vce Saturation (Max)	1V
Operating Temperature	-55°C ~ 100°C
Package / Case	4-DIP (0.300", 7.62mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the PS2506-1 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Voltage isolation rating: 5000Vrms (exact match required)
Number of channels: 1 (single-channel configuration)
Current transfer ratio: 200% minimum @ 1mA (minimum performance threshold)
Output type: Darlington (topology requirement)
Maximum output voltage: 40V
Maximum output current per channel: 200mA
Rise and fall time: 100µs typical for both parameters
Input compatibility: AC and DC input support
Vce saturation: 1V maximum
Operating temperature range: -55°C to 100°C

Mechanical Equivalence Criteria:

Package type: 4-DIP (0.300", 7.62mm)
Mounting method: Through Hole

The PS2506-1-A qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters listed above.

Parameter Comparison

Parameter	PS2506-1 (Main Part)	PS2506-1-A (Substitute)	Match Status
Manufacturer	CEL	Renesas Electronics Corporation	Different Manufacturer
Voltage - Isolation	5000Vrms	5000Vrms	Equivalent
Number of Channels	1	1	Equivalent
Current Transfer Ratio (Min)	200% @ 1mA	200% @ 1mA	Equivalent
Output Type	Darlington	Darlington	Equivalent
Voltage - Output (Max)	40V	40V	Equivalent
Current - Output / Channel	200mA	200mA	Equivalent
Rise / Fall Time (Typ)	100µs, 100µs	100µs, 100µs	Equivalent
Input Type	AC, DC	AC, DC	Equivalent
Vce Saturation (Max)	1V	1V	Equivalent
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	Equivalent
Package / Case	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Product Status	Obsolete	Preliminary	Different Status
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Improved Compliance

Engineering Selection Recommendations

The PS2506-1-A serves as a direct electrical and mechanical substitute for the obsolete PS2506-1. All critical isolation, output, and thermal parameters are identical between the two parts.

Product Status Consideration: The PS2506-1 is classified as Obsolete, while the PS2506-1-A carries a Preliminary status. This status difference reflects the PS2506-1-A's active development and availability pathway, supporting long-term design continuity.

Compliance Improvement: The PS2506-1-A achieves ROHS3 compliance, whereas the original PS2506-1 is RoHS non-compliant. Both parts maintain REACH Affected status and EAR99 export classification. The improved RoHS compliance of the substitute part aligns with current environmental and regulatory standards for electronic component procurement.

Inventory Availability: The PS2506-1-A demonstrates significantly higher inventory availability (16,200 pieces) compared to the PS2506-1 (1,674 pieces), supporting reliable procurement for production and design requirements.

Frequently Asked Questions (FAQ)

Q: Can the PS2506-1-A be used as a direct replacement for the PS2506-1 in existing designs?

A: Yes. The PS2506-1-A maintains complete electrical equivalence across isolation voltage (5000Vrms), output configuration (Darlington, 200mA), current transfer ratio (200% @ 1mA), and thermal operating range (-55°C to 100°C). Mechanical compatibility is confirmed through identical 4-DIP through-hole packaging.

Q: What is the significance of the different product status between PS2506-1 (Obsolete) and PS2506-1-A (Preliminary)?

A: The Obsolete status of the PS2506-1 indicates end-of-life for that specific part number. The Preliminary status of the PS2506-1-A indicates active development and production readiness. This transition supports design continuity by providing an equivalent part with ongoing manufacturer support.

Q: Are there any compliance differences between these parts?

A: The PS2506-1-A achieves ROHS3 compliance, while the PS2506-1 is RoHS non-compliant. Both parts are REACH Affected and classified as EAR99 for export purposes. The improved RoHS compliance of the substitute part reflects current environmental standards.

Q: Does the packaging differ between PS2506-1 and PS2506-1-A?

A: No. Both parts use identical 4-DIP (0.300", 7.62mm) through-hole packaging. PCB layout and mounting procedures remain unchanged.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by equivalence in isolation voltage (5000Vrms), number of channels (1), current transfer ratio (200% @ 1mA minimum), output type (Darlington), maximum output voltage (40V), maximum output current (200mA), rise/fall time (100µs), input type support (AC/DC), Vce saturation (1V maximum), and operating temperature range (-55°C to 100°C).

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