ISP817XCSM Equivalent & Substitute Parts

Part Overview

The ISP817XCSM is a single-channel optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation up to 5300Vrms and is designed for DC input applications requiring transistor-based switching outputs. The part is currently in active production status with 1155 units available in stock. Alternative part numbers within the ISP817 series are available to support supply chain flexibility and inventory management across equivalent specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	ISP817XCSM
Manufacturer	Isocom Components 2004 LTD
Category	Optoisolators
Series	ISP817
Number of Channels	1
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	50% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Vce Saturation (Max)	200mV
Rise / Fall Time (Typ)	4µs, 3µs
Operating Temperature	-55°C ~ 110°C
Package / Case	4-SMD (0.300", 7.62mm)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

The ISP817XCSM has three parametric equivalent substitute parts within the ISP817 series: ISP817XASM, ISP817XBSM, and ISP817XDSM. These parts are classified as parametric equivalents because they share identical electrical and mechanical specifications across all critical parameters that define optoisolator functionality and compatibility.

The substitution logic is based on the following key parameters that remain constant across all four part numbers:

Voltage isolation rating: 5300Vrms
Number of channels: 1
Current transfer ratio range: 50% to 600% @ 5mA
Output type: Transistor
Maximum output voltage: 80V
Maximum output current per channel: 50mA
Vce saturation: 200mV maximum
Rise and fall times: 4µs and 3µs respectively
Operating temperature range: -55°C to 110°C
Package configuration: 4-SMD (0.300", 7.62mm)
Input type: DC
Mounting type: Surface Mount
RoHS3 compliance status
Moisture sensitivity level: 1 (Unlimited)

All four parts are manufactured by Isocom Components 2004 LTD and maintain active product status. The differences between part numbers reflect internal manufacturing or binning variations that do not affect electrical or mechanical performance within the specified parameters.

Parameter Comparison

Parameter	ISP817XCSM	ISP817XASM	ISP817XBSM	ISP817XDSM
Manufacturer	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Isocom Components 2004 LTD
Series	ISP817	ISP817	ISP817	ISP817
Number of Channels	1	1	1	1
Voltage - Isolation	5300Vrms	5300Vrms	5300Vrms	5300Vrms
Current Transfer Ratio (Min)	50% @ 5mA	50% @ 5mA	50% @ 5mA	50% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA
Output Type	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA
Vce Saturation (Max)	200mV	200mV	200mV	200mV
Rise / Fall Time (Typ)	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs
Operating Temperature	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C
Package / Case	4-SMD (0.300", 7.62mm)	4-SMD (0.300", 7.62mm)	4-SMD (0.300", 7.62mm)	4-SMD (0.300", 7.62mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active
Current Inventory	1155 Pcs	1199 Pcs	1020 Pcs	1170 Pcs

Engineering Selection Recommendations

All four optoisolator part numbers—ISP817XCSM, ISP817XASM, ISP817XBSM, and ISP817XDSM—are functionally equivalent for circuit design purposes. Each part maintains active product status with Isocom Components 2004 LTD and carries ROHS3 compliance certification. Selection between these parts should be based on availability and supply chain requirements rather than electrical or mechanical performance differences.

The ISP817XASM currently has the highest inventory level at 1199 units, followed by ISP817XDSM at 1170 units, ISP817XCSM at 1155 units, and ISP817XBSM at 1020 units. All parts are supplied in tube packaging with identical 4-SMD surface mount configuration suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can ISP817XASM, ISP817XBSM, or ISP817XDSM be used as direct replacements for ISP817XCSM in existing designs?

A: Yes. All four part numbers share identical electrical specifications including isolation voltage, current transfer ratio, output voltage and current ratings, switching times, and operating temperature range. They are packaged identically in 4-SMD configuration and are pin-compatible for direct substitution.

Q: Are there any differences in isolation performance between these part numbers?

A: No. All parts maintain the same 5300Vrms isolation rating and are manufactured to identical specifications by Isocom Components 2004 LTD.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. ISP817XCSM, ISP817XASM, ISP817XBSM, and ISP817XDSM are all ROHS3 compliant with MSL rating of 1 (Unlimited). They carry identical REACH and ECCN classifications.

Q: What is the difference between these part numbers if they are electrically identical?

A: The differences between ISP817XCSM, ISP817XASM, ISP817XBSM, and ISP817XDSM reflect internal manufacturing variations or binning practices that do not affect performance within the specified electrical and mechanical parameters.

Q: Can these parts be mixed in the same production batch?

A: Yes. Since all four parts are parametric equivalents with identical specifications, they can be used interchangeably in the same circuit design and production environment.

Q: Are there any thermal or reliability differences between these optoisolators?

A: No. All parts operate across the same temperature range of -55°C to 110°C and maintain identical Vce saturation and switching time specifications.

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