PC817X1CSZ9F Equivalent & Substitute Parts

Part Overview

The PC817X1CSZ9F is a single-channel optoisolator with transistor output manufactured by SHARP/Socle Technology. This component provides 5000Vrms isolation and is housed in a 4-DIP package. The part is currently obsolete, making identification of suitable alternatives essential for ongoing system support and new designs requiring equivalent functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	PC817X1CSZ9F
Manufacturer	SHARP/Socle Technology
Category	Optoisolators
Series	PC817
Number of Channels	1
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	50% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
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)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the PC817X1CSZ9F is determined by the following critical parameters:

Isolation Voltage: Minimum 5000Vrms (ISP817X at 5300Vrms exceeds this requirement)
Number of Channels: Single channel (1)
Output Type: Transistor output
Current Transfer Ratio: 50% minimum and 600% maximum @ 5mA
Maximum Output Voltage: 80V
Maximum Output Current: 50mA per channel
Package Type: 4-DIP (0.300", 7.62mm)
Mounting: Through Hole

Substitute parts are grouped into two categories:

Parametric Equivalents (PC817X2NSZ9F, PC817X3NSZ9F): Identical electrical specifications and package configuration. Both are active products from the same PC817 series.

Similar Alternative (LTV-816, ISP817X): Meet all critical electrical parameters and package requirements. LTV-816 extends operating temperature to 110°C. ISP817X provides higher isolation voltage (5300Vrms).

Parameter Comparison

Parameter	PC817X1CSZ9F	PC817X2NSZ9F	PC817X3NSZ9F	LTV-816	ISP817X
Manufacturer	SHARP/Socle Technology	SHARP/Socle Technology	SHARP/Socle Technology	Lite-On Inc.	Isocom Components 2004 LTD
Number of Channels	1	1	1	1	1
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5300Vrms
Current Transfer Ratio (Min)	50% @ 5mA	50% @ 5mA	50% @ 5mA	50% @ 5mA	50% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	1.2V	1.2V	1.2V
Current - DC Forward (If) (Max)	50mA	50mA	50mA	50mA	50mA
Vce Saturation (Max)	200mV	200mV	200mV	200mV	200mV
Operating Temperature	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 110°C	-30°C ~ 100°C
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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

PC817X2NSZ9F and PC817X3NSZ9F are the primary substitutes for PC817X1CSZ9F. Both are active products from SHARP/Socle Technology within the PC817 series, offering identical electrical specifications and package configuration. Both are RoHS Compliant, supporting modern supply chain requirements.

LTV-816 (Lite-On Inc.) is a direct functional alternative meeting all electrical and mechanical parameters. This part extends the operating temperature range to 110°C and carries ROHS3 Compliant certification with REACH Unaffected status.

ISP817X (Isocom Components 2004 LTD) provides enhanced isolation voltage at 5300Vrms, exceeding the original specification. This part is ROHS3 Compliant and REACH Unaffected, suitable for applications requiring higher isolation margins.

All substitute parts maintain identical pin configuration, electrical performance within specified ranges, and 4-DIP through-hole mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can PC817X2NSZ9F or PC817X3NSZ9F directly replace PC817X1CSZ9F?

A: Yes. Both parts are parametric equivalents with identical isolation voltage (5000Vrms), current transfer ratio range (50%-600% @ 5mA), output voltage (80V max), output current (50mA), and 4-DIP package configuration. Both are active products with RoHS compliance.

Q: What is the difference between PC817X2NSZ9F and PC817X3NSZ9F?

A: Both parts are electrically and mechanically identical. The difference lies in inventory availability and manufacturing lot designation. Selection between them depends on supply chain availability.

Q: Is LTV-816 a suitable replacement?

A: Yes. LTV-816 meets all critical electrical parameters and maintains the 4-DIP package. The extended operating temperature range (-30°C to 110°C versus -30°C to 100°C) provides additional thermal margin. ROHS3 compliance and REACH Unaffected status support modern regulatory requirements.

Q: How does ISP817X differ from the original PC817X1CSZ9F?

A: ISP817X provides higher isolation voltage (5300Vrms versus 5000Vrms). All other electrical parameters—current transfer ratio, output voltage, output current, and operating temperature—remain equivalent. The 4-DIP package and through-hole mounting are identical.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts use 4-DIP (0.300", 7.62mm) through-hole packages, ensuring direct PCB compatibility without layout modifications.

Q: Which substitute should I select for new designs?

A: PC817X2NSZ9F or PC817X3NSZ9F are recommended for new designs as active products within the original series. LTV-816 and ISP817X are suitable alternatives if primary options are unavailable.

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