IS660 Optoisolator Darlington Output Equivalent & Substitute Parts

Part Overview

The IS660 is a high-voltage optoisolator with Darlington output manufactured by Isocom Components 2004 LTD. This 6-pin DIP component provides galvanic isolation up to 5300Vrms with a single channel configuration, designed for applications requiring high-voltage signal isolation and DC input switching. The part is currently active in production with 937 units in stock. Substitute parts become necessary when primary inventory is depleted, when supply chain constraints occur, or when design flexibility across compatible alternatives is required for procurement optimization.

Substiute Parts

IS660

Isocom Components 2004 LTDIn Stock: 1025IS660 Datasheet

Current PartRFQ

IS660X

Isocom Components 2004 LTDIn Stock: 1273IS660X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IS660 is determined by strict equivalence across the following critical parameters:

• Voltage isolation rating: 5300Vrms
• Current transfer ratio range: 1000% to 4000% @ 1mA
• Output type: Darlington configuration
• Maximum output voltage: 200V
• Maximum output current per channel: 150mA
• Vce saturation: 1.2V maximum
• Package type: 6-DIP through-hole mounting
• Number of channels: Single channel (1)
• Input type: DC
• Operating temperature range: -25°C to 100°C

Parts meeting all these specifications are classified as parametric equivalents and may be used interchangeably in circuit designs without modification to PCB layout or electrical schematic connections.

Parameter Comparison

Engineering Selection Recommendations

The IS660X is a direct parametric equivalent to the IS660. Both parts are manufactured by Isocom Components 2004 LTD, share identical electrical specifications, and are packaged in the same 6-DIP through-hole configuration. Both parts maintain active product status and comply with ROHS3 and REACH regulatory requirements. Selection between IS660 and IS660X may be based on inventory availability, lead time, or procurement cost without requiring any circuit design modifications or PCB layout changes. The IS660X currently has higher inventory availability at 1169 units compared to 937 units for the IS660.

Frequently Asked Questions (FAQ)

Q: Can IS660X be used as a direct replacement for IS660 in existing designs?

A: Yes. The IS660X meets all electrical and mechanical specifications of the IS660. No schematic or PCB modifications are required. Pin configuration, package dimensions, and electrical performance are identical.

Q: Are there any differences in isolation voltage between IS660 and IS660X?

A: No. Both parts provide 5300Vrms isolation voltage. This specification is identical across both variants.

Q: Do both parts support the same output current rating?

A: Yes. Both IS660 and IS660X are rated for 150mA maximum output current per channel with identical Darlington output characteristics and 1.2V maximum Vce saturation.

Q: What is the significance of the "X" suffix in IS660X?

A: The "X" suffix indicates a variant designation within the IS66 series. Both parts are manufactured by the same supplier and meet identical parametric requirements for substitution purposes.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both IS660 and IS660X are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited moisture sensitivity). Regulatory compliance is identical.

Q: Can these parts be used in high-temperature applications?

A: Both parts operate within the -25°C to 100°C temperature range. Applications requiring operation outside this range require alternative components.

Q: Is the 6-DIP package suitable for automated assembly?

A: Yes. The 6-DIP through-hole package is compatible with standard through-hole insertion equipment and manual soldering processes. Both IS660 and IS660X use identical package specifications.