PS8502L3-E3-AX Optoisolator Equivalent & Substitute Parts

Part Overview

The PS8502L3-E3-AX is a 5000Vrms optoisolator with transistor output, single-channel configuration in 8-SMD surface mount packaging. This component is manufactured by Renesas Electronics Corporation as part of the NEPOC series and is currently listed as discontinued at DiGi Electronics. The availability of equivalent and parametric substitute parts is essential for design continuity and sourcing flexibility in applications requiring high-voltage isolation with transistor output topology.

Substiute Parts

PS8502L3-E3-AX

CELIn Stock: 3479PS8502L3-E3-AX Datasheet

Current PartRFQ

HCPL-4504#300

Broadcom LimitedIn Stock: 1119HCPL-4504#300 Datasheet

SimilarRFQ

PS8502L2-E3-AX

Renesas Electronics CorporationIn Stock: 1553PS8502L2-E3-AX Datasheet

Parametric EquivalentRFQ

PS8502L2-V-E3-AX

Renesas Electronics CorporationIn Stock: 1796PS8502L2-V-E3-AX Datasheet

Parametric EquivalentRFQ

PS8502L3-E3-AX

Renesas Electronics CorporationIn Stock: 3482PS8502L3-E3-AX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of optoisolators is determined by the following critical electrical and mechanical parameters:

Primary Selection Criteria:

• Voltage isolation rating (5000Vrms minimum for direct replacement)
• Output type (transistor output required)
• Number of channels (single channel)
• Package configuration (8-SMD, Gull Wing surface mount)
• Current transfer ratio at specified test conditions
• Switching time characteristics (turn-on and turn-off times)
• Maximum output voltage and current ratings
• Operating temperature range

Substitution Classification:

Parametric Equivalents (PS8502L2-E3-AX, PS8502L2-V-E3-AX): These parts match all critical electrical parameters and mechanical specifications with the main part. They operate within the NEPOC series and maintain identical isolation voltage, current transfer ratio, switching characteristics, and thermal specifications. Packaging configuration is identical.

Similar Substitute (HCPL-4504#300): This part operates at a lower isolation voltage (3750Vrms versus 5000Vrms) and exhibits different electrical characteristics including higher current transfer ratio range (25%-60% versus 15% minimum) and lower maximum output voltage (20V versus 35V). This part is classified as a functional alternative where isolation voltage requirements permit, but cannot serve as a direct electrical equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Equivalents (Recommended for Direct Replacement): PS8502L2-E3-AX and PS8502L2-V-E3-AX are the preferred substitute options. Both maintain identical electrical specifications with the discontinued PS8502L3-E3-AX, including 5000Vrms isolation voltage, 15% minimum current transfer ratio, and 35V maximum output voltage. Both parts are currently in active product status with availability (1525 and 1745 units respectively). Both comply with ROHS3 specifications and REACH unaffected status. The packaging configuration remains identical (8-SMD, Gull Wing). These parts are suitable for direct substitution in designs requiring full electrical and mechanical compatibility.

Alternative Substitute (Lower Isolation Rating): HCPL-4504#300 is suitable for applications where the lower 3750Vrms isolation voltage is acceptable. This part offers advantages including higher current transfer ratio performance (25%-60% range) and faster switching times (200ns/300ns). However, the maximum output voltage is limited to 20V compared to 35V on the primary part. Additionally, this part carries RoHS non-compliant status, which may restrict use in regulated applications. This part is classified as a functional alternative only when circuit isolation voltage requirements do not mandate 5000Vrms isolation.

Frequently Asked Questions (FAQ)

Q: Can PS8502L2-E3-AX be used as a drop-in replacement for PS8502L3-E3-AX?

A: Yes. PS8502L2-E3-AX is a parametric equivalent with identical electrical specifications, package configuration, and compliance certifications. The part can be used as a direct substitution without circuit redesign.

Q: What is the difference between PS8502L2-E3-AX and PS8502L2-V-E3-AX?

A: Both parts maintain identical electrical specifications and isolation voltage ratings. The parts differ only in packaging format: PS8502L2-E3-AX is supplied in Tape & Reel (TR) packaging, while PS8502L2-V-E3-AX is also supplied in Tape & Reel (TR) packaging. Both are suitable for equivalent application use.

Q: Why is HCPL-4504#300 not a direct replacement?

A: HCPL-4504#300 operates at 3750Vrms isolation voltage, which is 1250Vrms lower than the original specification of 5000Vrms. The maximum output voltage is also limited to 20V compared to 35V. These differences restrict substitution to applications where lower isolation ratings are acceptable. Additionally, RoHS non-compliance status may conflict with regulatory requirements.

Q: Are all substitute parts in the same physical package?

A: Yes. All listed substitute parts utilize identical 8-SMD, Gull Wing surface mount packaging. PCB layouts and mounting procedures remain unchanged for parametric equivalent options.

Q: What is the current availability status of substitute parts?

A: PS8502L2-E3-AX and PS8502L2-V-E3-AX are in active product status with inventory availability (1525 and 1745 units respectively). HCPL-4504#300 is also active with 1057 units in stock. The original PS8502L3-E3-AX is discontinued at DiGi Electronics but has 3400 units available in existing inventory.

Q: Do substitute parts maintain the same compliance certifications?

A: PS8502L2-E3-AX and PS8502L2-V-E3-AX maintain ROHS3 compliance and REACH unaffected status identical to the original part. HCPL-4504#300 carries RoHS non-compliant designation, which may restrict use in applications with regulatory compliance requirements.