ISP321-1G Equivalent & Substitute Parts

Part Overview

The ISP321-1G is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This single-channel device provides galvanic isolation rated at 5300Vrms in a 4-DIP through-hole package. The component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when identical electrical and mechanical parameters are maintained across the same product series, ensuring direct functional equivalence in circuit applications.

Substiute Parts

ISP321-1G

Isocom Components 2004 LTDIn Stock: 896ISP321-1G Datasheet

Current PartRFQ

ISP321-1XG

Isocom Components 2004 LTDIn Stock: 872ISP321-1XG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISP321-1G are identified based on strict parametric equivalence within the ISP321-1 series. The substitution criteria are defined by the following key parameters that must remain identical:

• Voltage - Isolation: 5300Vrms
• Number of Channels: 1
• Current Transfer Ratio range: 50% (Min) to 600% (Max) @ 5mA
• Output Type: Transistor
• Voltage - Output (Max): 80V
• Current - Output / Channel: 50mA
• Vce Saturation (Max): 400mV
• Operating Temperature range: -30°C ~ 100°C
• Package / Case: 4-DIP (0.400", 10.16mm)
• Mounting Type: Through Hole
• RoHS Status: ROHS3 Compliant

Parts meeting all these criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both ISP321-1G and ISP321-1XG are Active status products manufactured by Isocom Components 2004 LTD within the ISP321-1 series. Both parts maintain full ROHS3 compliance and REACH unaffected status. The ISP321-1XG is a direct parametric equivalent to the ISP321-1G, with identical electrical specifications, isolation voltage rating, output characteristics, and thermal operating range. Selection between these parts may be based on inventory availability or supply chain considerations, as no functional differentiation exists between the two part numbers.

Frequently Asked Questions (FAQ)

Q: Can ISP321-1XG be used as a direct replacement for ISP321-1G?

A: Yes. The ISP321-1XG is a parametric equivalent with identical isolation voltage (5300Vrms), current transfer ratio range (50% to 600% @ 5mA), output voltage and current ratings, saturation characteristics, operating temperature range, and 4-DIP package configuration. Both parts are Active status with ROHS3 compliance.

Q: Are there any package or pinout differences between ISP321-1G and ISP321-1XG?

A: No. Both parts use the same 4-DIP (0.400", 10.16mm) through-hole package with identical mounting specifications.

Q: What isolation voltage does the ISP321-1G provide?

A: The ISP321-1G provides 5300Vrms galvanic isolation, maintained identically in the ISP321-1XG substitute.

Q: Are both parts RoHS compliant?

A: Yes. Both ISP321-1G and ISP321-1XG are ROHS3 compliant and REACH unaffected.

Q: What is the maximum output current for this optoisolator?

A: The maximum output current per channel is 50mA for both the ISP321-1G and ISP321-1XG.