ISD201 Equivalent & Substitute Parts Reference

Part Overview

The ISD201 is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation with a single channel configuration in an 8-DIP package. The ISD201 is currently in active production status with 4800 units available in inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the ISD201's core specifications, enabling direct replacement in applications where isolation voltage, output current capacity, and package form factor are compatible.

Substiute Parts

ISD201

Isocom Components 2004 LTDIn Stock: 4825ISD201 Datasheet

Current PartRFQ

ILD1

Vishay Semiconductor Opto DivisionIn Stock: 2305ILD1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISD201 are evaluated based on the following critical parameters:

• Package compatibility: 8-DIP (0.300", 7.62mm) through-hole mounting
• Output type: Transistor output configuration
• Output current capacity: Minimum 50mA per channel
• Maximum output voltage: Minimum 50V rating
• Vce saturation: Maximum 400mV
• Operating temperature range: Must encompass or exceed -25°C to 100°C
• Regulatory compliance: ROHS3 compliance and REACH unaffected status

The ILD1 from Vishay Semiconductor Opto Division meets these mechanical and electrical compatibility criteria, despite differences in isolation voltage specification and channel count. The ILD1 provides equivalent through-hole package form factor, transistor output configuration, and output current rating.

Parameter Comparison

Engineering Selection Recommendations

The ISD201 is the preferred component for new designs due to its active production status and current availability of 4800 units in inventory.

The ILD1 is classified as obsolete and should be used only in legacy system maintenance or repair applications where existing designs require component-level replacement. The ILD1 maintains ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for substitution in existing applications.

Selection between these components should be based on application requirements for isolation voltage, channel count, and maximum output voltage specifications. The ISD201 provides higher maximum output voltage (70V versus 50V), while the ILD1 offers dual-channel configuration and extended low-temperature operating range (-40°C versus -25°C).

Frequently Asked Questions (FAQ)

Q: Can the ILD1 directly replace the ISD201 in existing designs?

A: The ILD1 shares the same 8-DIP package footprint, transistor output configuration, and per-channel output current rating (50mA). However, the ILD1 has a lower maximum output voltage (50V versus 70V) and dual-channel configuration versus single-channel. Circuit designs must verify that the 50V maximum output voltage rating is sufficient for the application.

Q: What is the significance of the ILD1 being classified as obsolete?

A: Obsolete status indicates the ILD1 is no longer in active production. Inventory availability is limited to existing stock (2237 units reported). The ISD201, with active status and 4800 units in stock, is recommended for new designs to ensure long-term supply continuity.

Q: Are there differences in isolation voltage between these parts?

A: Yes. The ISD201 specifies 7.5Vpk isolation voltage, while the ILD1 specifies 5300Vrms isolation voltage. These represent different measurement standards and cannot be directly compared. Application requirements for isolation voltage must be evaluated independently for each component.

Q: Do both parts meet current regulatory requirements?

A: Both the ISD201 and ILD1 are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component manufacturing and use.

Q: What is the impact of the ILD1's dual-channel configuration?

A: The ILD1 provides two independent channels within the same 8-DIP package, while the ISD201 provides a single channel. Applications requiring only one isolation channel can use either component, though the dual-channel ILD1 may offer additional functionality in some circuit designs.