HCPL-817-W6CE Equivalent & Substitute Parts

Part Overview

The HCPL-817-W6CE is an optoisolator with transistor output manufactured by Broadcom Limited. This component provides galvanic isolation up to 5000Vrms in a 4-DIP package and is designed for applications requiring electrical isolation between input and output circuits. The part is currently active in production with 4270 units in stock. Substitute parts are necessary when the original component becomes unavailable, when alternative sourcing is required, or when design flexibility demands component selection from multiple manufacturers while maintaining functional equivalence.

Substiute Parts

HCPL-817-W6CE

Broadcom LimitedIn Stock: 4337HCPL-817-W6CE Datasheet

Current PartRFQ

ISP817A

Isocom Components 2004 LTDIn Stock: 12821ISP817A Datasheet

MFR RecommendedRFQ

ISP817BX

Isocom Components 2004 LTDIn Stock: 870ISP817BX Datasheet

MFR RecommendedRFQ

ISP817CX

Isocom Components 2004 LTDIn Stock: 2718ISP817CX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HCPL-817-W6CE is determined by the following critical parameters:

• Isolation Voltage: Minimum 5000Vrms required. Substitute parts with equal or higher isolation voltage (5300Vrms) are acceptable.
• Current Transfer Ratio: The HCPL-817-W6CE operates at 200%-400% @ 5mA. Substitute parts must support this range or provide equivalent performance within their specified range.
• Output Characteristics: Maximum output voltage of 70V and output current of 50mA define the load-switching capability.
• Switching Speed: Rise and fall times of 4µs and 3µs establish the frequency response requirements.
• Package Compatibility: 4-DIP through-hole mounting is required for direct board-level substitution.
• Environmental Compliance: RoHS3 compliance and REACH unaffected status are mandatory for regulatory equivalence.

The three substitute parts (ISP817A, ISP817BX, ISP817CX) from Isocom Components 2004 LTD meet these criteria with higher isolation voltage (5300Vrms) and equivalent switching characteristics, though with different current transfer ratio specifications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts (ISP817A, ISP817BX, ISP817CX) are active products with ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the HCPL-817-W6CE. The substitute parts provide higher isolation voltage (5300Vrms versus 5000Vrms), which exceeds the original specification and provides additional safety margin.

The ISP817CX offers the highest current transfer ratio range (300%-600% @ 5mA), providing the closest upper-range match to the HCPL-817-W6CE (400% maximum). The ISP817BX provides a mid-range current transfer ratio (130%-260% @ 5mA). The ISP817A provides the lowest current transfer ratio range (80%-160% @ 5mA) and may require circuit design consideration if high current transfer efficiency is critical to application performance.

All substitute parts maintain identical switching speed characteristics (4µs rise time, 3µs fall time), output voltage capability (80V maximum), output current (50mA), and operating temperature range (-30°C to 100°C). The primary design consideration is the package dimension difference: substitute parts use 4-DIP (0.300", 7.62mm) versus the original 4-DIP (0.400", 10.16mm), which may affect PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can ISP817A, ISP817BX, and ISP817CX be used interchangeably with HCPL-817-W6CE?

A: These parts share the same functional category (optoisolators with transistor output), identical switching characteristics, and equivalent environmental compliance. However, the current transfer ratio specifications differ. ISP817CX provides the closest performance match. Physical package dimensions differ (0.300" versus 0.400" DIP width), requiring PCB layout verification before substitution.

Q: What is the significance of the current transfer ratio difference?

A: Current transfer ratio determines the efficiency of signal transfer from input to output. The HCPL-817-W6CE specifies 200%-400% @ 5mA. ISP817CX (300%-600%) overlaps this range. ISP817BX (130%-260%) and ISP817A (80%-160%) have lower ratios and may require input current adjustment to achieve equivalent output performance in the application circuit.

Q: Are the substitute parts compatible with existing PCB designs?

A: All parts use 4-DIP through-hole mounting and are pin-compatible. However, the package body dimensions differ: HCPL-817-W6CE uses 0.400" width while ISP817 variants use 0.300" width. This may affect PCB silkscreen alignment and mechanical clearance. Verify PCB layout spacing before implementation.

Q: Do all parts meet the same regulatory and compliance standards?

A: Yes. The HCPL-817-W6CE and all three substitute parts (ISP817A, ISP817BX, ISP817CX) are ROHS3 compliant, REACH unaffected, and carry identical environmental classification (MSL 1 - Unlimited). All are active products in current production.

Q: What is the isolation voltage advantage of the substitute parts?

A: The substitute parts provide 5300Vrms isolation versus 5000Vrms for the original part. This 6% increase in isolation voltage provides additional safety margin and may extend component lifetime in high-voltage applications, though both specifications exceed standard industrial isolation requirements.