HCPL-4503#360 Equivalent & Substitute Parts

Part Overview

The HCPL-4503#360 is an optoisolator with transistor output manufactured by Broadcom Limited, rated for 3750Vrms isolation voltage in a single-channel 8-DIP Gull Wing surface mount package. This component is currently active in production and available in inventory (825 pcs). The part operates across the industrial temperature range of -55°C to 100°C with DC input and transistor output configuration, suitable for high-voltage isolation applications requiring galvanic separation.

Substitute parts are necessary when the original HCPL-4503#360 becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when enhanced electrical performance characteristics are needed for specific application requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL-4503#360
Manufacturer	Broadcom Limited
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA
Turn On / Turn Off Time (Typ)	200ns, 600ns
Input Type	DC
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	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the HCPL-4503#360 are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent (Direct Substitution): The HCPL-4503-300E maintains identical electrical specifications including 3750Vrms isolation voltage, 19-50% current transfer ratio, 200ns/600ns switching times, and 20V maximum output voltage. This part differs only in RoHS compliance status (ROHS3 Compliant) and packaging format (Tube vs. alternative formats). This classification allows direct pin-for-pin replacement in applications where the original part number is unavailable.

Manufacturer Recommended Alternatives (Enhanced Performance): Parts from Renesas Electronics Corporation (PS8502 series) and Vishay Semiconductor Opto Division (SFH6345 series) offer higher isolation voltage ratings (5000Vrms to 5300Vrms) while maintaining compatibility across critical parameters: single-channel configuration, DC input, transistor output, 8mA output current, 8-SMD Gull Wing package, and -55°C to 100°C operating temperature range. These alternatives provide superior isolation performance and RoHS3 compliance.

Key Parameters Determining Substitution:

Number of Channels: 1 (all substitutes)
Input Type: DC (all substitutes)
Output Type: Transistor (all substitutes)
Current - Output / Channel: 8mA (all substitutes)
Mounting Type: Surface Mount (all substitutes)
Package / Case: 8-SMD, Gull Wing (all substitutes)
Operating Temperature: -55°C ~ 100°C (all substitutes)

Parameter Comparison

Parameter	HCPL-4503#360	HCPL-4503-300E	PS8502L2-AX	PS8502L2-E3-AX	PS8502L2-V-AX	PS8502L2-V-E3-AX	PS8502L3-E3-AX	PS8502L3-V-E3-AX	SFH6345-X007	SFH6345-X007T	SFH6345-X009
Manufacturer	Broadcom Limited	Broadcom Limited	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Vishay Semiconductor	Vishay Semiconductor	Vishay Semiconductor
Number of Channels	1	1	1	1	1	1	1	1	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5300Vrms	5300Vrms	5300Vrms
Current Transfer Ratio (Min)	19% @ 16mA	19% @ 16mA	15% @ 16mA	15% @ 16mA	15% @ 16mA	15% @ 16mA	15% @ 16mA	15% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA
Turn On / Turn Off Time (Typ)	200ns, 600ns	200ns, 600ns	220ns, 350ns	220ns, 350ns	—	220ns, 350ns	220ns, 350ns	—	300ns, 300ns	300ns, 300ns	300ns, 300ns
Input Type	DC	DC	DC	DC	DC	DC	DC	DC	DC	DC	DC
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor with Base	Transistor	Transistor	Transistor with Base	Transistor	Transistor	Transistor
Voltage - Output (Max)	20V	20V	35V	35V	35V	35V	35V	35V	25V	25V	25V
Current - Output / Channel	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.5V	1.5V	1.7V	1.7V	1.7V	1.7V	1.7V	1.7V	1.33V	1.33V	1.33V
Current - DC Forward (If) (Max)	25mA	25mA	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	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°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	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	8-SMD, Gull Wing	8-SMD, Gull Wing
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	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	Active	Active

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent): The HCPL-4503-300E is the primary substitute for the HCPL-4503#360. Both parts maintain identical electrical performance specifications and are manufactured by Broadcom Limited. The HCPL-4503-300E achieves ROHS3 compliance, making it suitable for applications with regulatory requirements. Inventory availability is higher for the HCPL-4503-300E (4217 pcs vs. 825 pcs), supporting supply chain continuity.

Enhanced Performance Alternatives: The Renesas Electronics PS8502 series (PS8502L2-AX, PS8502L2-E3-AX, PS8502L2-V-AX, PS8502L2-V-E3-AX, PS8502L3-E3-AX, PS8502L3-V-E3-AX) and Vishay Semiconductor SFH6345 series (SFH6345-X007, SFH6345-X007T, SFH6345-X009) provide higher isolation voltage ratings (5000Vrms to 5300Vrms) while maintaining compatibility with the original application requirements. All alternatives are ROHS3 compliant and carry active product status.

Packaging Format Selection: Tube packaging is suitable for manual assembly and lower-volume production runs. Tape & Reel (TR) packaging is optimized for automated pick-and-place assembly processes and higher-volume manufacturing. The HCPL-4503-300E is available in Tube format; Renesas PS8502 variants are available in both Tube and Tape & Reel formats; Vishay SFH6345-X007T and SFH6345-X007 are available in Tape & Reel and Tube formats respectively.

Output Configuration Consideration: Standard transistor output variants (PS8502L2-AX, PS8502L2-E3-AX, PS8502L3-E3-AX, SFH6345-X007, SFH6345-X007T, SFH6345-X009) are compatible with applications designed for the HCPL-4503#360. Transistor with Base output variants (PS8502L2-V-AX, PS8502L2-V-E3-AX, PS8502L3-V-E3-AX) provide additional base connection for enhanced circuit design flexibility but require circuit topology verification before implementation.

Frequently Asked Questions (FAQ)

Q: Can the HCPL-4503-300E be used as a direct replacement for the HCPL-4503#360? A: Yes. The HCPL-4503-300E is a parametric equivalent with identical electrical specifications including 3750Vrms isolation voltage, 19-50% current transfer ratio, 200ns/600ns switching times, and 20V maximum output voltage. Both parts use 8-SMD Gull Wing packaging and operate across -55°C to 100°C. The primary difference is RoHS compliance status (ROHS3 Compliant vs. non-compliant).

Q: What are the advantages of using PS8502 or SFH6345 series parts instead of the HCPL-4503#360? A: The PS8502 series provides 5000Vrms isolation voltage and the SFH6345 series provides 5300Vrms isolation voltage, compared to 3750Vrms for the HCPL-4503#360. This enhanced isolation rating offers superior performance margin in high-voltage applications. All alternatives are ROHS3 compliant and maintain compatibility across critical parameters including single-channel configuration, DC input, transistor output, 8mA output current, and 8-SMD Gull Wing package.

Q: Are there differences in switching speed between the HCPL-4503#360 and substitute parts? A: Yes. The HCPL-4503#360 has turn-on/turn-off times of 200ns/600ns. The PS8502 series has 220ns/350ns switching times (faster turn-off). The SFH6345 series has 300ns/300ns switching times (symmetrical response). Applications with specific timing requirements must account for these differences in circuit design.

Q: What is the difference between Tube and Tape & Reel packaging formats? A: Tube packaging contains individual components in a plastic tube, suitable for manual assembly and lower-volume production. Tape & Reel (TR) packaging places components on a continuous carrier tape wound on a reel, optimized for automated pick-and-place assembly equipment and higher-volume manufacturing. Both formats maintain identical electrical specifications and component quality.

Q: Can I use PS8502L2-V-AX or PS8502L3-V-E3-AX (Transistor with Base output) in place of the HCPL-4503#360? A: These variants have transistor with base output configuration instead of standard transistor output. While they maintain compatibility across isolation voltage, current ratings, and package format, the additional base connection requires circuit topology verification. Applications designed for standard transistor output must be evaluated for compatibility with the base connection before implementation.

Q: Which substitute part has the highest inventory availability? A: The SFH6345-X007 has the highest inventory at 4646 pcs, followed by PS8502L3-E3-AX at 3400 pcs and HCPL-4503-300E at 4217 pcs. Inventory levels support supply chain requirements for both immediate and sustained production needs.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed (HCPL-4503-300E, PS8502 series, and SFH6345 series) are ROHS3 compliant. The original HCPL-4503#360 is RoHS non-compliant. Applications with regulatory requirements for RoHS compliance must use substitute parts.

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