PC817X3CSZ9F Equivalent & Substitute Parts

Part Overview

The PC817X3CSZ9F is a photocoupler optoisolator with transistor output manufactured by SHARP/Socle Technology. This component provides galvanic isolation up to 5000Vrms with a single channel configuration in a 4-DIP package. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical and mechanical compatibility across isolation voltage, current transfer ratio, output characteristics, and package specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	PC817X3CSZ9F
Manufacturer	SHARP/Socle Technology
Category	Optoisolators
Series	PC817
Product Status	Obsolete
Number of Channels	1
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	50% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Rise / Fall Time (Typ)	4µs, 3µs
Input Type	DC
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Voltage - Forward (Vf) (Typ)	1.2V
Current - DC Forward (If) (Max)	50mA
Vce Saturation (Max)	200mV
Operating Temperature	-30°C ~ 100°C
Mounting Type	Through Hole
Package / Case	4-DIP (0.300", 7.62mm)

Substitute Part Grouping Explanation

Substitute parts for the PC817X3CSZ9F are classified based on electrical parameter alignment and product status:

Parametric Equivalents maintain all critical electrical specifications: 5000Vrms isolation voltage, 50-600% current transfer ratio at 5mA, 80V maximum output voltage, 50mA output current, 4µs/3µs rise/fall times, and 4-DIP through-hole package. These parts are direct functional replacements with identical electrical performance.

Direct Manufacturer Equivalents from alternative manufacturers meet or exceed the same electrical specifications while offering active product status and improved availability.

Similar Alternatives maintain core isolation voltage, output type, and package configuration but may exhibit minor variations in current transfer ratio range, output current capability, or operating temperature range. These parts are suitable where slight parameter deviations are acceptable within system design margins.

The following parameters determine substitution eligibility:

Voltage - Isolation: 5000Vrms minimum
Current Transfer Ratio: 50-600% @ 5mA
Output Type: Transistor
Package / Case: 4-DIP (0.300", 7.62mm)
Mounting Type: Through Hole

Parameter Comparison

Parameter	PC817X3CSZ9F	PC817X2NSZ9F	PC817X3NSZ9F	LTV-816	EL816-V	ISP817X
Manufacturer	SHARP/Socle	SHARP/Socle	SHARP/Socle	Lite-On Inc.	Everlight Electronics	Isocom Components
Product Status	Obsolete	Active	Active	Active	Active	Active
Number of Channels	1	1	1	1	1	1
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5300Vrms
Current Transfer Ratio (Min)	50% @ 5mA	50% @ 5mA	50% @ 5mA	50% @ 5mA	50% @ 5mA	50% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA
Rise / Fall Time (Typ)	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs
Input Type	DC	DC	DC	DC	DC	DC
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V
Current - DC Forward (If) (Max)	50mA	50mA	50mA	50mA	60mA	50mA
Vce Saturation (Max)	200mV	200mV	200mV	200mV	200mV	200mV
Operating Temperature	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 110°C	-55°C ~ 110°C	-30°C ~ 100°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)
RoHS Status	Not specified	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

PC817X2NSZ9F and PC817X3NSZ9F are the primary recommended substitutes. Both are active products from SHARP/Socle Technology with identical electrical specifications to the obsolete PC817X3CSZ9F. These parts maintain full parametric equivalence and are RoHS Compliant, making them suitable for new designs and production transitions.

LTV-816 from Lite-On Inc. is an active direct manufacturer equivalent with identical electrical performance. This part offers extended operating temperature range (-30°C to 110°C) and ROHS3 compliance with EAR99 export classification. Availability is established at 45,400 units in stock.

ISP817X from Isocom Components provides parametric equivalence with enhanced isolation voltage (5300Vrms versus 5000Vrms). This part is ROHS3 compliant and suitable for applications requiring higher isolation margins. Operating temperature range matches the original specification.

EL816-V from Everlight Electronics Co Ltd is a similar alternative with extended operating temperature range (-55°C to 110°C) and ROHS3 compliance. Current - DC Forward (If) maximum is specified at 60mA versus 50mA for the original part. This part is suitable where wider temperature operation is required and the increased forward current capability is acceptable.

Frequently Asked Questions (FAQ)

Q: Can PC817X2NSZ9F and PC817X3NSZ9F be used interchangeably with PC817X3CSZ9F?

A: Yes. Both parts are parametric equivalents with identical electrical specifications including isolation voltage, current transfer ratio, output voltage and current ratings, and rise/fall times. All three parts use the same 4-DIP through-hole package. The primary difference is product status: PC817X2NSZ9F and PC817X3NSZ9F are active products while PC817X3CSZ9F is obsolete.

Q: What is the difference between the substitute parts?

A: PC817X2NSZ9F and PC817X3NSZ9F are functionally identical parametric equivalents from SHARP/Socle Technology. LTV-816 from Lite-On Inc. and ISP817X from Isocom Components are direct manufacturer alternatives with identical or superior electrical specifications. EL816-V from Everlight Electronics offers extended temperature range but with slightly higher forward current capability.

Q: Are all substitute parts RoHS compliant?

A: PC817X2NSZ9F and PC817X3NSZ9F are RoHS Compliant. LTV-816, EL816-V, and ISP817X are ROHS3 Compliant. The original PC817X3CSZ9F does not specify RoHS status.

Q: Does package compatibility require any PCB modifications?

A: No. All substitute parts use the 4-DIP (0.300", 7.62mm) through-hole package with identical pin configuration and spacing. Direct PCB substitution is possible without layout modifications.

Q: Which substitute part offers the best availability?

A: PC817X3NSZ9F offers the highest inventory at 305,300 units in stock. PC817X2NSZ9F provides 201,200 units and LTV-816 provides 45,400 units. ISP817X and EL816-V have lower inventory levels at 2,727 and 878 units respectively.

Q: Can EL816-V be used in applications with temperature extremes?

A: EL816-V supports operating temperatures from -55°C to 110°C, providing wider temperature range coverage than the original PC817X3CSZ9F (-30°C to 100°C). The part is suitable for applications requiring extended temperature operation. Current - DC Forward (If) is specified at 60mA maximum versus 50mA for the original part.

Q: What is the isolation voltage difference between ISP817X and other substitutes?

A: ISP817X provides 5300Vrms isolation voltage compared to 5000Vrms for PC817X3CSZ9F and most substitute parts. This higher isolation rating provides additional safety margin in high-voltage isolation applications. All other electrical parameters remain equivalent.

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