ACPL-573KL Equivalent & Substitute Parts

Part Overview

The ACPL-573KL is an optoisolator with Darlington output manufactured by Broadcom Limited. This component provides 1500VDC isolation across 2 channels in an 8-DIP package and is classified as Active product status. The device is suitable for applications requiring galvanic isolation with fast switching characteristics. Substitute parts may be required due to inventory constraints, design optimization, or application-specific channel requirements.

Substiute Parts

ACPL-573KL

Broadcom LimitedIn Stock: 959ACPL-573KL Datasheet

Current PartRFQ

ACPL-5700L

Broadcom LimitedIn Stock: 1236ACPL-5700L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ACPL-573KL is determined by the following critical parameters:

• Voltage - Isolation: 1500VDC (must match)
• Current Transfer Ratio (Min): 200% @ 5mA (must match)
• Output Type: Darlington (must match)
• Voltage - Output (Max): 20V (must match)
• Current - Output / Channel: 40mA (must match)
• Operating Temperature: -55°C ~ 125°C (must match)
• Package / Case: 8-CDIP (0.300", 7.62mm) (must match)
• Mounting Type: Through Hole (must match)

The ACPL-5700L qualifies as a parametric equivalent based on these core electrical and mechanical specifications. The primary difference is the number of channels: ACPL-573KL provides 2 channels while ACPL-5700L provides 1 channel. This distinction affects circuit design and board layout but does not alter the fundamental isolation voltage, switching performance, or output characteristics per channel.

Parameter Comparison

Engineering Selection Recommendations

Both ACPL-573KL and ACPL-5700L maintain Active product status and are ROHS3 compliant with REACH Unaffected classification. Selection between these parts depends on circuit requirements:

Use ACPL-573KL when the application requires dual-channel isolation in a single package, reducing board space and component count.

Use ACPL-5700L when single-channel isolation is sufficient, or when multiple single-channel devices are preferred for design modularity. The ACPL-5700L offers higher inventory availability (1173 Pcs vs. 896 Pcs).

Both devices are suitable for applications operating within the -55°C to 125°C temperature range and meet the same regulatory compliance standards.

Frequently Asked Questions (FAQ)

Q: Can ACPL-5700L replace ACPL-573KL in all applications?

A: ACPL-5700L provides identical electrical performance per channel but offers only 1 channel instead of 2. Substitution is valid only if the application requires single-channel isolation. Dual-channel applications require either two ACPL-5700L devices or retention of the ACPL-573KL.

Q: Are the isolation voltage ratings identical?

A: Yes. Both ACPL-573KL and ACPL-5700L provide 1500VDC isolation voltage, meeting the same isolation requirements.

Q: Do these parts share the same package footprint?

A: Yes. Both devices use the 8-CDIP (0.300", 7.62mm) package with Through Hole mounting. PCB layout compatibility is maintained for single-channel applications.

Q: What is the difference in switching speed between these parts?

A: No difference. Both parts exhibit identical turn-on and turn-off times of 2µs and 6µs respectively.

Q: Are there compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH Unaffected, and carry identical regulatory classifications (ECCN: EAR99, HTSUS: 8541.49.8000).

Q: Which part should be selected for new designs?

A: Selection depends on channel requirements. For dual-channel isolation, use ACPL-573KL. For single-channel isolation or modular designs, ACPL-5700L is appropriate. Both are Active status products suitable for production use.