HCPL-653K Equivalent & Substitute Parts

Part Overview

The HCPL-653K is an optoisolator transistor with base output manufactured by Broadcom Limited. This component provides 1500VDC isolation across 2 channels in a 20-CLCC surface mount package. The device is currently active in production and widely used in industrial control, power management, and signal isolation applications where galvanic isolation is required between logic and power circuits.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility allows for functionally identical alternatives from the same manufacturer.

Substiute Parts

HCPL-653K

Broadcom LimitedIn Stock: 770HCPL-653K Datasheet

Current PartRFQ

HCPL-6531

Broadcom LimitedIn Stock: 1983HCPL-6531 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-653K is determined by strict equivalence across the following critical parameters:

• Number of Channels: 2
• Voltage - Isolation: 1500VDC
• Current Transfer Ratio (Min): 9% @ 16mA
• Output Type: Transistor with Base
• Voltage - Output (Max): 20V
• Current - Output / Channel: 8mA
• Turn On / Turn Off Time (Typ): 400ns, 1µs
• Operating Temperature: -55°C ~ 125°C
• Package / Case: 20-CLCC
• Mounting Type: Surface Mount

The HCPL-6531 meets all substitution criteria as a parametric equivalent. Both parts share identical electrical specifications, thermal operating range, and physical packaging, enabling direct substitution in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the HCPL-653K and HCPL-6531 are active production parts from Broadcom Limited with identical compliance profiles. Selection between these parts should be based on inventory availability and lead time requirements rather than technical differentiation.

The HCPL-6531 currently maintains higher inventory levels (1947 pcs vs. 728 pcs), making it the preferred choice when supply chain flexibility is a consideration. Both parts carry identical RoHS non-compliance status and REACH unaffected classification, so regulatory requirements do not differentiate the selection.

Frequently Asked Questions (FAQ)

Q: Can HCPL-6531 be used as a direct replacement for HCPL-653K?

A: Yes. The HCPL-6531 is a parametric equivalent with identical electrical specifications, thermal range, and 20-CLCC package configuration. No circuit modifications are required for substitution.

Q: Are there any differences in isolation voltage between these parts?

A: No. Both parts provide 1500VDC isolation across 2 channels with identical current transfer ratio specifications.

Q: Do these parts have the same package footprint?

A: Yes. Both use the 20-CLCC (8.89x8.89mm) surface mount package, ensuring identical PCB layout compatibility.

Q: What is the significance of the Current Transfer Ratio specification?

A: The 9% minimum CTR @ 16mA input current defines the optical coupling efficiency between the LED input stage and the transistor output stage. This specification is identical across both parts.

Q: Are there any compliance or certification differences?

A: No. Both parts share identical RoHS non-compliance status, MSL rating of 1 (Unlimited), and REACH unaffected classification.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection should be based on current inventory availability and supplier lead times, as both parts are active production items with identical specifications.