HCPL-2531-360E Equivalent & Substitute Parts

Part Overview

The HCPL-2531-360E is a 2-channel optoisolator with transistor output manufactured by Broadcom Limited. This component provides 3750Vrms isolation voltage and is designed for applications requiring galvanic isolation in signal transmission circuits. The part is currently active in production with 823 units in stock. Substitute parts are identified based on matching electrical characteristics, isolation voltage ratings, channel configuration, and packaging compatibility to support design flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL-2531-360E
Manufacturer	Broadcom Limited
Category	Optoisolators
Number of Channels	2
Voltage - Isolation	3750Vrms
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
Mounting Type	Surface Mount
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-2531-360E are classified based on the following substitution criteria:

Primary Substitution Criteria:

Voltage - Isolation: 3750Vrms or higher
Number of Channels: 2 channels (primary requirement)
Output Type: Transistor
Current Transfer Ratio (Min): 19% @ 16mA or higher
Current Transfer Ratio (Max): 50% @ 16mA or higher
Operating Temperature Range: -55°C ~ 100°C or wider
Input Type: DC
Mounting Type: Surface Mount

Grouping Categories:

Group 1 - Parametric Equivalents (Broadcom HCPL Series): Parts with identical electrical specifications and isolation voltage, differing only in package configuration or part number variant.

Group 2 - Direct Manufacturer Alternatives (Isocom ICPL Series): Parts with higher isolation voltage (5000Vrms), single-channel configuration, and Darlington output topology. These provide enhanced isolation performance with functional compatibility through circuit design adaptation.

Group 3 - MFR Recommended Alternatives (Vishay SFH Series): Parts with higher isolation voltage (5300Vrms), 2-channel transistor output, and enhanced performance characteristics. These represent the highest isolation rating available in the substitute group.

Parameter Comparison

Parameter	HCPL-2531-360E	HCPL-2531-300E	HCPL-4503-300E	HCPL-4502-320E	ICPL2531SMT&R	ICPL2530SMT&R	SFH6325-X009T	SFH6326-X007T	HCPL-2531#300
Manufacturer	Broadcom	Broadcom	Broadcom	Broadcom	Isocom	Isocom	Vishay	Vishay	Broadcom
Number of Channels	2	2	1	1	1	1	2	2	2
Voltage - Isolation	3750Vrms	3750Vrms	3750Vrms	3750Vrms	5000Vrms	5000Vrms	5300Vrms	5300Vrms	3750Vrms
Current Transfer Ratio (Min)	19%	19%	19%	19%	19%	7%	7%	19%	19%
Current Transfer Ratio (Max)	50%	50%	50%	50%	50%	50%	—	—	50%
Turn On / Turn Off Time (Typ)	200ns, 600ns	200ns, 600ns	200ns, 600ns	200ns, 600ns	350ns, 300ns	350ns, 500ns	300ns, 600ns	200ns, 500ns	200ns, 600ns
Output Type	Transistor	Transistor	Transistor	Transistor	Darlington with Base	Darlington with Base	Transistor	Transistor	Transistor
Voltage - Output (Max)	20V	20V	20V	20V	20V	20V	25V	25V	20V
Current - Output / Channel	8mA	8mA	8mA	8mA	—	—	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.5V	1.5V	1.5V	1.5V	1.45V	1.45V	1.33V	1.33V	1.5V
Current - DC Forward (If) (Max)	25mA	25mA	25mA	25mA	25mA	25mA	25mA	25mA	25mA
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
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	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active
Inventory (Pcs)	823	1200	4217	5900	3149	1897	3494	12520	809

Engineering Selection Recommendations

Direct Substitutes (Broadcom HCPL Series):

HCPL-2531-300E, HCPL-2531#300, and HCPL-4502-320E maintain identical isolation voltage (3750Vrms) and electrical performance specifications. HCPL-2531-300E and HCPL-2531#300 are 2-channel variants with full parameter alignment. HCPL-4502-320E is a single-channel alternative. All three are ROHS3 compliant and active in production. HCPL-2531#300 carries RoHS non-compliant status and should be selected only when legacy compliance requirements apply.

Enhanced Isolation Alternatives (Isocom ICPL Series):

ICPL2531SMT&R and ICPL2530SMT&R provide 5000Vrms isolation voltage, exceeding the primary part specification. Both are single-channel Darlington output configurations. ICPL2531SMT&R maintains the 19% minimum current transfer ratio. ICPL2530SMT&R has a 7% minimum current transfer ratio and extended turn-off time (500ns). Operating temperature range is -40°C ~ 100°C, narrower than the primary part. Both are ROHS3 compliant and active in production.

Premium Isolation Alternatives (Vishay SFH Series):

SFH6325-X009T and SFH6326-X007T deliver 5300Vrms isolation voltage with 2-channel transistor output matching the primary part's channel configuration. SFH6326-X007T maintains 19% minimum current transfer ratio and 200ns turn-on time, providing performance alignment with the primary part. SFH6325-X009T has 7% minimum current transfer ratio. Both support 25V maximum output voltage and are ROHS3 compliant with active production status. SFH6326-X007T offers the highest inventory availability (12520 units).

Frequently Asked Questions (FAQ)

Q: Can HCPL-4503-300E and HCPL-4502-320E be used as direct replacements for the HCPL-2531-360E?

A: These are single-channel alternatives with identical isolation voltage (3750Vrms) and electrical specifications. Direct replacement requires circuit redesign to accommodate single-channel operation. Both maintain ROHS3 compliance and active production status.

Q: What is the key difference between Broadcom HCPL and Isocom ICPL substitutes?

A: Isocom parts provide higher isolation voltage (5000Vrms) but are single-channel with Darlington output topology. ICPL2531SMT&R matches the current transfer ratio specification; ICPL2530SMT&R has reduced minimum current transfer ratio (7%). Operating temperature range is -40°C ~ 100°C versus -55°C ~ 100°C for the primary part.

Q: Are Vishay SFH6325-X009T and SFH6326-X007T compatible with the HCPL-2531-360E?

A: Both are 2-channel transistor output optoisolators with 5300Vrms isolation voltage. SFH6326-X007T provides superior performance alignment with 19% minimum current transfer ratio and 200ns turn-on time. Both support higher maximum output voltage (25V) and are ROHS3 compliant.

Q: What packaging considerations apply to these substitutes?

A: All substitute parts use 8-SMD Gull Wing surface mount packaging, matching the primary part's footprint. Supplier device packages vary (8-DIP Gull Wing for some Broadcom variants), but PCB land pattern compatibility is maintained across the 8-SMD standard.

Q: Which substitute offers the best inventory availability?

A: SFH6326-X007T has the highest inventory level at 12520 units. HCPL-4502-320E provides 5900 units. Both are active in production with ROHS3 compliance.

Q: Can HCPL-2531#300 be used in new designs?

A: HCPL-2531#300 is RoHS non-compliant and should be reserved for legacy system maintenance or applications with specific non-compliance requirements. For new designs, select ROHS3-compliant alternatives such as HCPL-2531-300E or SFH6326-X007T.

Q: What is the significance of current transfer ratio specifications in substitution?

A: Current transfer ratio determines the optical coupling efficiency between input and output. The primary part specifies 19% minimum and 50% maximum at 16mA. ICPL2530SMT&R and SFH6325-X009T have 7% minimum ratios, requiring circuit verification for adequate signal transfer. SFH6326-X007T and ICPL2531SMT&R maintain the 19% minimum specification.

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