PS2565L-2 Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2565L-2 is a 2-channel optoisolator with transistor output, rated for 5000Vrms isolation voltage. Manufactured by CEL, this component provides 2 isolated channels in an 8-SMD, Gull Wing package suitable for surface mount applications. The product is obsolete, making identification of active equivalent parts essential for ongoing designs and production requirements. Current inventory of 3130 units is available in original stock condition.

Key Parameters

Parameter	Value
Manufacturer Part Number	PS2565L-2
Manufacturer	CEL
Number of Channels	2
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	400% @ 5mA
Rise / Fall Time (Typ)	3µs, 5µs
Input Type	AC, DC
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Voltage - Forward (Vf) (Typ)	1.17V
Current - DC Forward (If) (Max)	80mA
Vce Saturation (Max)	300mV
Operating Temperature	-55°C ~ 100°C
Package / Case	8-SMD, Gull Wing
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the PS2565L-2 with the LTV-824HS-TA1 is based on the following critical parameters:

Matching Parameters:

Number of Channels: 2
Voltage - Isolation: 5000Vrms
Input Type: AC, DC
Output Type: Transistor
Package / Case: 8-SMD, Gull Wing
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Differing Parameters Affecting Selection:

Current Transfer Ratio: PS2565L-2 operates 80-400% @ 5mA; LTV-824HS-TA1 operates 20-80% @ 100mA
Voltage - Output (Max): PS2565L-2 rated 80V; LTV-824HS-TA1 rated 35V
Current - Output / Channel: PS2565L-2 rated 50mA; LTV-824HS-TA1 rated 80mA
Operating Temperature: PS2565L-2 rated -55°C ~ 100°C; LTV-824HS-TA1 rated -30°C ~ 100°C
Product Status: PS2565L-2 is Obsolete; LTV-824HS-TA1 is Active
RoHS Status: PS2565L-2 is non-compliant; LTV-824HS-TA1 is ROHS3 Compliant

Parameter Comparison

Parameter	PS2565L-2 (CEL)	LTV-824HS-TA1 (Lite-On Inc.)
Number of Channels	2	2
Voltage - Isolation	5000Vrms	5000Vrms
Current Transfer Ratio (Min)	80% @ 5mA	20% @ 100mA
Current Transfer Ratio (Max)	400% @ 5mA	80% @ 100mA
Rise / Fall Time (Typ)	3µs, 5µs	4µs, 3µs
Input Type	AC, DC	AC, DC
Output Type	Transistor	Transistor
Voltage - Output (Max)	80V	35V
Current - Output / Channel	50mA	80mA
Voltage - Forward (Vf) (Typ)	1.17V	1.4V
Current - DC Forward (If) (Max)	80mA	150mA
Vce Saturation (Max)	300mV	200mV
Operating Temperature	-55°C ~ 100°C	-30°C ~ 100°C
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

The LTV-824HS-TA1 from Lite-On Inc. is an active substitute for the obsolete PS2565L-2. Both parts maintain matching isolation voltage (5000Vrms), channel count (2), input type (AC, DC), output type (Transistor), and physical package (8-SMD, Gull Wing).

Selection of the LTV-824HS-TA1 is supported by active product status, ensuring availability for new production and long-term supply chain continuity. The LTV-824HS-TA1 achieves ROHS3 compliance, addressing regulatory requirements that the PS2565L-2 does not meet.

Designs operating within the LTV-824HS-TA1 parameter range are directly substitutable. Circuits requiring maximum output voltage of 80V or lower operating temperatures (-55°C minimum) must retain the PS2565L-2 or identify alternative components with matching specifications. The LTV-824HS-TA1 supports maximum output voltage of 35V and minimum operating temperature of -30°C.

Frequently Asked Questions (FAQ)

Q: Can the LTV-824HS-TA1 directly replace the PS2565L-2 in all applications?

A: Direct replacement is valid for designs within the LTV-824HS-TA1 electrical and thermal specifications. Review your circuit for maximum output voltage requirements (LTV-824HS-TA1: 35V maximum) and minimum operating temperature (-30°C minimum). If your design operates below -30°C or requires output voltage exceeding 35V, alternative parts must be identified.

Q: What is the significance of the Current Transfer Ratio differences between these parts?

A: The PS2565L-2 achieves 80-400% CTR at 5mA input current, while the LTV-824HS-TA1 achieves 20-80% CTR at 100mA input current. These represent different operating points and should not be directly compared. Circuit designs must accommodate the appropriate CTR specification for the selected part's input drive level.

Q: Are there compliance differences between the PS2565L-2 and LTV-824HS-TA1?

A: The LTV-824HS-TA1 is ROHS3 compliant; the PS2565L-2 is RoHS non-compliant. For applications requiring RoHS compliance, the LTV-824HS-TA1 meets this requirement. Both parts have MSL 1 (Unlimited) moisture sensitivity rating and identical ECCN and HTSUS codes.

Q: What is the physical package compatibility between these parts?

A: Both the PS2565L-2 and LTV-824HS-TA1 use the 8-SMD, Gull Wing package. They are physically compatible for surface mount application without PCB layout modification.

Q: Why is the PS2565L-2 listed as obsolete?

A: Obsolete status indicates the PS2565L-2 is no longer in active production. The LTV-824HS-TA1 represents an active, commercially available alternative manufactured by Lite-On Inc., ensuring long-term component availability and manufacturing continuity.

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