ISP814A Optoisolator - Equivalent & Substitute Parts

Part Overview

The ISP814A is a single-channel optoisolator with transistor output, designed for AC and DC input applications. It provides galvanic isolation at 7.5Vpk with a 4-DIP through-hole package configuration. The device is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Alternative part numbers within the ISP814 series are available to support procurement flexibility and supply chain continuity.

Substiute Parts

ISP814A

Isocom Components 2004 LTDIn Stock: 10291ISP814A Datasheet

Current PartRFQ

ISP814AX

Isocom Components 2004 LTDIn Stock: 1312ISP814AX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the ISP814 series is determined by strict equivalence across all electrical and mechanical parameters. The ISP814A and ISP814AX are classified as parametric equivalents based on the following criteria:

Critical Substitution Parameters:

• Isolation voltage: 7.5Vpk
• Number of channels: 1
• Current transfer ratio range: 50% to 150% @ 1mA
• Output type: Transistor
• Maximum output voltage: 35V
• Maximum output current: 50mA per channel
• Vce saturation: 200mV maximum
• Package configuration: 4-DIP (0.300", 7.62mm)
• Mounting method: Through Hole
• Input capability: AC and DC
• Operating temperature range: -30°C ~ 100°C
• Compliance: ROHS3 Compliant

Both parts share identical electrical specifications, thermal characteristics, and physical packaging, enabling direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both ISP814A and ISP814AX are active production parts with ROHS3 compliance and identical electrical and mechanical specifications. Selection between these parts is based on availability and procurement requirements rather than technical differentiation. The ISP814A maintains higher inventory levels (10,200 pcs), while the ISP814AX provides an alternative source (1,230 pcs). Both parts meet the same regulatory requirements and are suitable for direct substitution in applications requiring single-channel optoisolation with transistor output in 4-DIP through-hole configuration.

Frequently Asked Questions (FAQ)

Q: Can ISP814AX replace ISP814A in existing designs? A: Yes. Both parts are parametric equivalents with identical electrical specifications, current transfer ratios, output characteristics, and 4-DIP package dimensions. Direct substitution is supported without circuit modification.

Q: Are there differences in isolation voltage between these parts? A: No. Both ISP814A and ISP814AX provide 7.5Vpk isolation voltage and are rated for identical input types (AC and DC).

Q: Do these parts have the same thermal operating range? A: Yes. Both parts operate across -30°C to 100°C and share identical Vce saturation characteristics (200mV maximum).

Q: Is the 4-DIP package identical for both parts? A: Yes. Both use 4-DIP (0.300", 7.62mm) through-hole packaging with identical pin configurations and mounting requirements.

Q: Are both parts RoHS compliant? A: Yes. Both ISP814A and ISP814AX are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).