HCPL-817-W0AE Equivalent & Substitute Parts

Part Overview

The HCPL-817-W0AE is a 5000Vrms optoisolator with transistor output manufactured by Broadcom Limited. This single-channel, 4-DIP through-hole component is designed for high-voltage isolation applications requiring DC input and transistor output switching. The part is currently active in production with 29,400 units in stock. Alternative models may be required due to supply constraints, design optimization for higher isolation voltage ratings, or current transfer ratio specifications suited to specific application requirements.

Substiute Parts

HCPL-817-W0AE

Broadcom LimitedIn Stock: 29505HCPL-817-W0AE 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

TPC816A C9G

Taiwan Semiconductor CorporationIn Stock: 735TPC816A C9G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-817-W0AE is determined by the following critical parameters:

• Isolation Voltage: Minimum 5000Vrms (equal or higher acceptable)
• Number of Channels: Must be 1
• Output Type: Must be Transistor
• Current - Output / Channel: Must be 50mA
• Mounting Type: Must be Through Hole
• Package Configuration: 4-DIP form factor (physical dimensions may vary within DIP standard)
• Input Type: Must be DC
• Vce Saturation (Max): Must not exceed 200mV
• Operating Temperature Range: Must cover -30°C ~ 100°C
• RoHS Compliance: ROHS3 Compliant

The substitute parts are grouped into two categories:

MFR Recommended Substitutes (ISP817A, ISP817BX, ISP817CX): Manufactured by Isocom Components 2004 LTD. These parts meet or exceed the isolation voltage specification (5300Vrms) and maintain identical channel count, output type, current rating, and saturation characteristics. They differ in current transfer ratio grades and package dimensions (0.300" vs. 0.400").

Parametric Equivalent (TPC816A C9G): Manufactured by Taiwan Semiconductor Corporation. This part matches the HCPL-817-W0AE in isolation voltage (5000Vrms), current transfer ratio range, and package dimensions. However, it carries an Obsolete product status.

Parameter Comparison

Engineering Selection Recommendations

ISP817A is the primary recommended substitute. It maintains Active product status, exceeds isolation voltage specification (5300Vrms vs. 5000Vrms), and carries identical current transfer ratio range (80%-160% @ 5mA). Adequate inventory (12,790 units) supports production requirements. The reduced package dimension (0.300" vs. 0.400") requires PCB layout verification for through-hole spacing compatibility.

ISP817BX and ISP817CX are secondary alternatives with Active status and higher isolation voltage ratings. These parts feature elevated current transfer ratio grades (130%-260% and 300%-600% respectively), suitable for applications requiring enhanced optical coupling efficiency. Limited inventory (808 and 2,685 units respectively) may constrain availability for high-volume applications.

TPC816A C9G carries Obsolete product status and should be avoided for new designs or long-term production commitments. While parametrically equivalent to the HCPL-817-W0AE, obsolescence status indicates discontinued manufacturing and restricted future availability.

All substitute candidates maintain ROHS3 compliance, identical operating temperature range, and equivalent saturation characteristics, confirming functional compatibility within specified electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can ISP817A replace HCPL-817-W0AE in existing designs without modification?

A: ISP817A is electrically compatible. However, the package dimension difference (0.300" vs. 0.400" DIP width) requires PCB layout verification. Through-hole spacing and lead positioning must be confirmed before implementation.

Q: What is the significance of the current transfer ratio differences between ISP817A, ISP817BX, and ISP817CX?

A: Current transfer ratio defines the optical coupling efficiency at specified input current (5mA). ISP817A (80%-160%) matches the original specification. ISP817BX (130%-260%) and ISP817CX (300%-600%) provide higher coupling efficiency, reducing input current requirements for equivalent output switching. Selection depends on circuit design requirements for input drive current and output switching speed.

Q: Why is TPC816A C9G listed as a substitute if it is Obsolete?

A: TPC816A C9G is included as a parametric equivalent for reference purposes. Its Obsolete status disqualifies it from new design selection or production use. Existing inventory may support legacy system repairs only.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. HCPL-817-W0AE and all listed substitutes (ISP817A, ISP817BX, ISP817CX, TPC816A C9G) are ROHS3 Compliant, confirming restricted substance compliance for regulated markets.

Q: What is the impact of higher isolation voltage (5300Vrms) in ISP817 variants?

A: Higher isolation voltage provides additional safety margin in high-voltage isolation applications. This enhancement does not degrade performance in circuits designed for 5000Vrms isolation. It represents an improvement in component robustness without functional compromise.

Q: Can package dimension differences affect circuit performance?

A: Package dimensions affect PCB layout and lead positioning only. Electrical performance remains identical. Through-hole spacing, lead length, and board routing must be verified for the narrower 0.300" DIP package used in ISP817 variants.