HCPL-2531-320E Equivalent & Substitute Parts

Part Overview

The HCPL-2531-320E is a 2-channel optoisolator with transistor output manufactured by Broadcom Limited. This component provides 5000Vrms isolation and is designed for high-speed switching applications in industrial and power management circuits. The part is currently active in production with 2266 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or specific application requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL-2531-320E
Manufacturer	Broadcom Limited
Category	Optoisolators
Number of Channels	2
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA
Turn On / Turn Off Time (Typ)	200ns, 600ns
Output Type	Transistor
Voltage - Output (Max)	20V
Current - Output / Channel	8mA
Voltage - Forward (Vf) (Typ)	1.5V
Current - DC Forward (If) (Max)	25mA
Operating Temperature	-55°C ~ 100°C
Package / Case	8-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the HCPL-2531-320E are classified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Voltage isolation rating (minimum 5000Vrms)
Number of channels (2-channel configuration)
Output type (transistor output)
Current transfer ratio range (19% to 50% @ 16mA)
Package type (8-SMD, Gull Wing surface mount)
Operating temperature range (-55°C to 100°C minimum)
Input type (DC)

Substitute Categories:

Direct Manufacturer Substitutes: Parts with identical electrical specifications and packaging from alternative manufacturers (ICPL2531SMT&R, ICPL2530SMT&R).

Enhanced Specification Substitutes: Parts with equal or superior isolation voltage, matching channel count and output type, with compatible or improved electrical characteristics (SFH6325-X009T, SFH6326-X007T).

Parametric Equivalent: Same manufacturer part with identical specifications but different packaging configuration (HCPL-2531#320).

Parameter Comparison

Parameter	HCPL-2531-320E	ICPL2531SMT&R	ICPL2530SMT&R	SFH6325-X009T	SFH6326-X007T	HCPL-2531#320
Manufacturer	Broadcom Limited	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Vishay Semiconductor Opto Division	Vishay Semiconductor Opto Division	Broadcom Limited
Number of Channels	2	1	1	2	2	2
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5300Vrms	5300Vrms	5000Vrms
Current Transfer Ratio (Min)	19% @ 16mA	19% @ 16mA	7% @ 16mA	7% @ 16mA	19% @ 16mA	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA	50% @ 16mA	50% @ 16mA	Not specified	Not specified	50% @ 16mA
Turn On / Turn Off Time (Typ)	200ns, 600ns	350ns, 300ns	350ns, 500ns	300ns, 600ns	200ns, 500ns	200ns, 600ns
Output Type	Transistor	Darlington with Base	Darlington with Base	Transistor	Transistor	Transistor
Voltage - Output (Max)	20V	20V	20V	25V	25V	20V
Current - Output / Channel	8mA	Not specified	Not specified	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.5V	1.45V	1.45V	1.33V	1.33V	1.5V
Current - DC Forward (If) (Max)	25mA	25mA	25mA	25mA	25mA	25mA
Operating Temperature	-55°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
Packaging Type	Tube	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tube
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

HCPL-2531#320 (Broadcom Limited): This part is a parametric equivalent with identical electrical specifications and the same 8-SMD package. It differs only in packaging configuration (Tube vs. Tape & Reel). Selection is appropriate for applications requiring the same performance characteristics. Note that this variant carries RoHS non-compliant status, which may restrict use in regulated applications requiring ROHS3 compliance.

SFH6326-X007T (Vishay Semiconductor Opto Division): This 2-channel transistor output optoisolator meets all primary substitution criteria with enhanced isolation voltage (5300Vrms vs. 5000Vrms) and matching current transfer ratio minimum (19% @ 16mA). Turn-on time is identical (200ns), and operating temperature range matches the main part. ROHS3 compliance is maintained. This part is suitable for direct substitution with superior isolation margin.

SFH6325-X009T (Vishay Semiconductor Opto Division): This 2-channel transistor output optoisolator provides enhanced isolation voltage (5300Vrms) and matching output specifications. Current transfer ratio minimum is lower (7% @ 16mA), and maximum specification is not provided. ROHS3 compliance is maintained. This part is suitable for applications where lower current transfer ratio minimum is acceptable.

ICPL2531SMT&R (Isocom Components 2004 LTD): This part is a 1-channel optoisolator with Darlington output, differing from the 2-channel transistor output configuration of the main part. Current transfer ratio specifications match (19% to 50% @ 16mA). Operating temperature range is limited to -40°C to 100°C. This part is not a direct substitute due to channel count and output type differences.

ICPL2530SMT&R (Isocom Components 2004 LTD): This part is a 1-channel optoisolator with Darlington output. Current transfer ratio minimum is lower (7% @ 16mA). Operating temperature range is limited to -40°C to 100°C. This part is not a direct substitute due to channel count, output type, and reduced current transfer ratio minimum.

Frequently Asked Questions (FAQ)

Q: Can ICPL2531SMT&R or ICPL2530SMT&R replace the HCPL-2531-320E in my application?

A: These parts have different output types (Darlington with Base vs. Transistor) and channel counts (1 vs. 2). They are not direct substitutes for the HCPL-2531-320E. Use only if your circuit design accommodates single-channel Darlington output configuration.

Q: What is the difference between SFH6325-X009T and SFH6326-X007T?

A: Both are 2-channel transistor output optoisolators with 5300Vrms isolation. SFH6326-X007T has a higher current transfer ratio minimum (19% vs. 7% @ 16mA) and faster turn-on time (200ns vs. 300ns). SFH6326-X007T is the preferred choice for applications requiring consistent current transfer performance.

Q: Is HCPL-2531#320 suitable for RoHS-regulated applications?

A: No. HCPL-2531#320 carries RoHS non-compliant status. For applications requiring ROHS3 compliance, use HCPL-2531-320E, SFH6325-X009T, SFH6326-X007T, ICPL2531SMT&R, or ICPL2530SMT&R.

Q: What is the primary difference between Tube and Tape & Reel packaging?

A: Tube packaging is used for manual handling and lower-volume applications. Tape & Reel (TR) packaging is designed for automated assembly processes. Both contain the same component; packaging selection depends on manufacturing process requirements.

Q: Can I use a substitute part with higher isolation voltage than the original?

A: Yes. Parts with equal or higher isolation voltage (5300Vrms vs. 5000Vrms) are suitable substitutes. Higher isolation voltage provides additional safety margin and does not negatively impact circuit performance.

Q: What operating temperature range limitations should I consider?

A: ICPL2531SMT&R and ICPL2530SMT&R have a limited operating range (-40°C to 100°C) compared to the main part and other substitutes (-55°C to 100°C). Use these parts only if your application does not require operation below -40°C.

Q: Are all substitute parts available in the same 8-SMD package?

A: Yes. All listed substitute parts use the 8-SMD, Gull Wing package, ensuring mechanical compatibility with the original HCPL-2531-320E footprint.

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