ACPL-844-000E Equivalent & Substitute Parts

Part Overview

The ACPL-844-000E is a 4-channel optoisolator with transistor output manufactured by Broadcom Limited. It provides 5000Vrms isolation voltage and is designed for applications requiring galvanic isolation between input and output circuits. The device is currently in active production status. Substitute parts may be required due to supply constraints, design phase transitions, or application-specific performance requirements.

Substiute Parts

ACPL-844-000E

Broadcom LimitedIn Stock: 3222ACPL-844-000E Datasheet

Current PartRFQ

PS2505-4-A

Renesas Electronics CorporationIn Stock: 4319PS2505-4-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The PS2505-4-A qualifies as a substitute for the ACPL-844-000E based on the following critical parameters:

• 4-channel configuration: Both devices provide 4 isolated channels
• 5000Vrms isolation voltage: Identical isolation rating
• Transistor output stage: Both use transistor-based output architecture
• 16-DIP package: Identical physical form factor and pin count
• Through-hole mounting: Compatible with the same PCB assembly process
• 50mA output current per channel: Matching current capability
• AC/DC input compatibility: Both accept AC and DC input signals

The PS2505-4-A exhibits higher current transfer ratio specifications and extended lower operating temperature range, which represent performance enhancements rather than limitations for substitution purposes.

Parameter Comparison

Engineering Selection Recommendations

ACPL-844-000E is the primary selection for new designs. The device maintains active production status and is recommended for all new applications requiring 4-channel 5000Vrms optoisolation in 16-DIP packaging.

PS2505-4-A is suitable for existing designs or legacy system maintenance where component replacement is necessary. This device is classified as "Not For New Designs" and should not be selected for new development projects. The PS2505-4-A is REACH Affected, whereas the ACPL-844-000E is REACH Unaffected, which may impact supply chain compliance requirements for certain applications.

Both devices maintain ROHS3 compliance and identical isolation voltage ratings, ensuring functional compatibility within the specified electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can PS2505-4-A be used as a direct replacement for ACPL-844-000E in new designs?

A: No. The PS2505-4-A is designated "Not For New Designs" and should only be used for replacement in existing systems. New designs must use the ACPL-844-000E.

Q: Are the 16-DIP packages physically identical?

A: Yes. Both devices use 16-DIP (0.300", 7.62mm) packaging with identical pin configurations, allowing direct PCB footprint compatibility.

Q: What are the differences in current transfer ratio specifications?

A: The PS2505-4-A specifies higher current transfer ratios (80-600% @ 5mA) compared to the ACPL-844-000E (20-300% @ 1mA). These are measured at different input currents and represent enhanced performance characteristics in the substitute device.

Q: Does the extended operating temperature range of PS2505-4-A affect substitution?

A: The PS2505-4-A operating range (-55°C ~ 100°C) exceeds the ACPL-844-000E range (-30°C ~ 100°C). This represents a performance enhancement and does not restrict substitution for applications within the ACPL-844-000E temperature specification.

Q: What is the significance of REACH Affected vs. REACH Unaffected status?

A: REACH Affected status indicates the PS2505-4-A may contain substances of concern requiring compliance documentation. The ACPL-844-000E REACH Unaffected status simplifies regulatory compliance for certain markets and applications.

Q: Are both devices suitable for AC and DC input signals?

A: Yes. Both the ACPL-844-000E and PS2505-4-A accept AC and DC input types, providing equivalent input signal compatibility.