IS733 Optoisolator Equivalent & Substitute Parts

Part Overview

The IS733 is an optoisolator transistor with base output manufactured by Isocom Components 2004 LTD. This single-channel device provides 5300Vrms isolation and is designed for AC/DC input applications requiring galvanic isolation in 6-DIP through-hole packaging. The product maintains active status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when electrical performance, mechanical compatibility, and regulatory compliance align with the original specification.

Substiute Parts

IS733

Isocom Components 2004 LTDIn Stock: 859IS733 Datasheet

Current PartRFQ

IS733X

Isocom Components 2004 LTDIn Stock: 991IS733X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IS733 are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain constant:

• Isolation voltage: 5300Vrms
• Number of channels: 1
• Output type: Transistor with Base
• Current transfer ratio range: 15% to 300% @ 1mA
• Maximum output voltage: 35V
• Maximum output current: 50mA
• Package type: 6-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Input capability: AC and DC
• Operating temperature range: -30°C ~ 100°C

The IS733X meets all these criteria and is classified as a parametric equivalent. Both parts share identical electrical performance characteristics, mechanical compatibility, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the IS733 and IS733X are active products with full regulatory compliance. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation. The IS733X carries 887 pcs in stock compared to 828 pcs for the IS733, providing equivalent performance and compliance for all applications requiring single-channel optoisolation at 5300Vrms with transistor output in 6-DIP through-hole configuration. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring suitability for regulated manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can IS733X be used as a direct replacement for IS733?

A: Yes. The IS733X is a parametric equivalent with identical electrical specifications, output characteristics, isolation voltage, current transfer ratio, rise/fall times, and package configuration. Direct substitution is supported without circuit modification.

Q: Are there any differences in isolation voltage between IS733 and IS733X?

A: No. Both parts provide 5300Vrms isolation voltage, meeting identical galvanic isolation requirements.

Q: Do both parts support AC and DC input?

A: Yes. Both IS733 and IS733X accept AC and DC input signals with identical input type specifications.

Q: Is the 6-DIP package identical for both parts?

A: Yes. Both parts use 6-DIP (0.300", 7.62mm) through-hole packaging with identical pin configuration and mechanical compatibility.

Q: What is the current transfer ratio range for these optoisolators?

A: Both parts specify a current transfer ratio of 15% minimum to 300% maximum at 1mA input current.

Q: Are both parts RoHS compliant?

A: Yes. Both IS733 and IS733X are ROHS3 compliant with MSL rating of 1 (Unlimited), suitable for standard manufacturing and storage conditions.

Q: What is the maximum output current for these devices?

A: Both parts support 50mA maximum output current per channel with 35V maximum output voltage rating.