ILD2 Optoisolator Equivalent & Substitute Parts

Part Overview

The ILD2 is a 2-channel optoisolator with transistor output manufactured by Vishay Semiconductor Opto Division. It provides 5300Vrms isolation voltage in an 8-DIP through-hole package. The ILD2 is currently in Last Time Buy status, making identification of equivalent and substitute parts essential for design continuity and long-term component availability. Alternative parts must maintain compatibility across isolation voltage, channel configuration, output characteristics, and package specifications.

Substiute Parts

ILD2

Vishay Semiconductor Opto DivisionIn Stock: 2805ILD2 Datasheet

Current PartRFQ

ILD2

Vishay Semiconductor Opto DivisionIn Stock: 2805ILD2 Datasheet

MFR RecommendedRFQ

ILD2X

Isocom Components 2004 LTDIn Stock: 1242ILD2X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ILD2 is determined by the following critical parameters:

• Isolation Voltage: Must equal or exceed 5300Vrms
• Output Type: Must be transistor output
• Package: Must be 8-DIP (0.300", 7.62mm) through-hole
• Current Transfer Ratio: Must support 100% minimum and 500% maximum @ 10mA
• Maximum Output Voltage: Must support 70V minimum
• Output Current: Must support 50mA per channel minimum
• Input Type: Must be DC
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The ILD2X from Isocom Components meets the electrical and mechanical requirements for substitution. However, the ILD2X is a single-channel device, whereas the ILD2 is a dual-channel device. This represents a functional difference that must be evaluated based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

The ILD2X qualifies as an electrical and mechanical substitute based on matching isolation voltage, output characteristics, package configuration, and compliance certifications. Both parts maintain ROHS3 compliance and MSL 1 rating.

The primary design consideration is the channel count difference: the ILD2 provides 2 channels while the ILD2X provides 1 channel. Applications requiring dual-channel isolation in a single package cannot use the ILD2X as a direct one-to-one replacement without circuit redesign.

The ILD2X operates over a narrower temperature range (-25°C to 100°C) compared to the ILD2 (-40°C to 100°C). Applications requiring operation below -25°C must retain the ILD2.

The ILD2X has a maximum DC forward current of 50mA versus 60mA for the ILD2. This difference is within acceptable tolerance for most applications operating at the specified 50mA output current per channel.

The ILD2X is currently in Active product status, providing superior long-term availability compared to the ILD2's Last Time Buy status.

Frequently Asked Questions (FAQ)

Q: Can the ILD2X replace the ILD2 in all applications?

A: The ILD2X meets the electrical and mechanical specifications for substitution. However, the ILD2X is a single-channel device while the ILD2 is dual-channel. Applications requiring two isolated channels in a single package must use two ILD2X devices or select an alternative dual-channel optoisolator.

Q: What are the key differences between ILD2 and ILD2X?

A: The primary differences are channel count (2 vs. 1), operating temperature range (-40°C to 100°C vs. -25°C to 100°C), and maximum DC forward current (60mA vs. 50mA). Isolation voltage, output voltage, output current per channel, and package type are identical.

Q: Are both parts compatible with the same PCB footprint?

A: Yes. Both the ILD2 and ILD2X use the 8-DIP (0.300", 7.62mm) through-hole package and are mechanically compatible with the same footprint.

Q: Which part should be selected for new designs?

A: The ILD2X is recommended for new designs due to its Active product status and assured long-term availability. The ILD2 is in Last Time Buy status and should be reserved for legacy system support or applications with specific dual-channel requirements in a single package.

Q: Are there compliance or certification differences?

A: Both parts maintain ROHS3 compliance, MSL 1 rating, and identical REACH and ECCN classifications. No compliance differences exist between the two parts.