ICPL4502 Equivalent & Substitute Parts

Part Overview

The ICPL4502 is a single-channel optoisolator with transistor output rated for 5000Vrms isolation voltage in an 8-DIP through-hole package. Manufactured by Isocom Components 2004 LTD, this component is classified as obsolete. Due to its obsolete status and limited availability, equivalent and substitute optoisolators from active manufacturers are necessary for new designs and ongoing production requirements. Suitable alternatives maintain the core electrical characteristics while offering improved product lifecycle support and compliance certifications.

Key Parameters

Parameter	Value
Isolation Voltage	5000Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA
Maximum Output Voltage	20V
Output Current per Channel	8mA
Operating Temperature Range	-55°C to 100°C
Package Type	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Input Type	DC

Substitute Part Grouping Explanation

Substitution for the ICPL4502 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Single channel configuration
Transistor output topology
8-DIP through-hole package (0.300", 7.62mm)
DC input type
Operating temperature range -55°C to 100°C
Current Transfer Ratio minimum 19% @ 16mA
Output current capability 8mA per channel
Maximum forward current 25mA

Isolation Voltage Consideration: The ICPL4502 specifies 5000Vrms isolation. Substitute parts are grouped into two categories:

Direct Equivalents (5000Vrms isolation): EL4502, EL4502-V, HCPL-4502-020E, HCPL-4503#020, HCPL-4503-020E
Functional Alternative (3750Vrms isolation): HCPL-4502
Enhanced Specification (5300Vrms isolation): SFH6345

All listed substitutes maintain identical package, channel count, output type, and thermal operating range. Differences in isolation voltage, switching times, and compliance certifications are documented in the parameter comparison table.

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	CTR Min @ 16mA	CTR Max @ 16mA	Turn On / Turn Off Time (Typ)	Max Output Voltage	Vf (Typ)	Product Status	RoHS Status
ICPL4502	Isocom Components 2004 LTD	5000Vrms	19%	50%	150ns, 400ns	20V	1.45V	Obsolete	ROHS3 Compliant
HCPL-4502	Broadcom Limited	3750Vrms	19%	50%	200ns, 600ns	20V	1.5V	Active	RoHS non-compliant
SFH6345	Vishay Semiconductor Opto Division	5300Vrms	19%	—	300ns, 300ns	25V	1.33V	Active	ROHS3 Compliant
EL4502	Everlight Electronics Co Ltd	5000Vrms	19%	50%	350ns, 300ns	20V	1.45V	Active	ROHS3 Compliant
EL4502-V	Everlight Electronics Co Ltd	5000Vrms	19%	50%	350ns, 300ns	20V	1.45V	Active	ROHS3 Compliant
HCPL-4502-020E	Broadcom Limited	5000Vrms	19%	50%	200ns, 600ns	20V	1.5V	Active	ROHS3 Compliant
HCPL-4503#020	Broadcom Limited	5000Vrms	19%	50%	200ns, 600ns	20V	1.5V	Active	RoHS non-compliant
HCPL-4503-020E	Broadcom Limited	5000Vrms	19%	50%	200ns, 600ns	20V	1.5V	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Isolation Voltage): EL4502, EL4502-V, HCPL-4502-020E, HCPL-4503#020, and HCPL-4503-020E all maintain 5000Vrms isolation matching the ICPL4502 specification. All are manufactured by active suppliers with current product status. EL4502 and EL4502-V from Everlight Electronics and HCPL-4502-020E and HCPL-4503-020E from Broadcom carry ROHS3 compliance. HCPL-4503#020 is RoHS non-compliant.

For Enhanced Isolation Performance: SFH6345 from Vishay Semiconductor Opto Division provides 5300Vrms isolation, exceeding the ICPL4502 specification while maintaining all other electrical parameters. This part is ROHS3 compliant and active in production.

For Cost-Optimized Applications (Lower Isolation Voltage Acceptable): HCPL-4502 from Broadcom Limited operates at 3750Vrms isolation. This part is active but RoHS non-compliant. Selection of this part requires confirmation that the reduced isolation voltage meets application requirements.

Compliance Considerations: For new designs requiring ROHS3 compliance, select from: EL4502, EL4502-V, HCPL-4502-020E, HCPL-4503-020E, or SFH6345. The ICPL4502 original part and HCPL-4502 are not suitable for RoHS-restricted applications.

Frequently Asked Questions (FAQ)

Q: Can HCPL-4502 be used as a direct replacement for ICPL4502? A: HCPL-4502 maintains identical package, channel count, output type, and thermal range. However, its 3750Vrms isolation voltage is lower than the ICPL4502's 5000Vrms specification. Use only if application isolation requirements are confirmed to be 3750Vrms or lower.

Q: What is the difference between EL4502 and EL4502-V? A: Both parts are electrically identical with 5000Vrms isolation, matching current transfer ratios, and identical package specifications. The -V suffix indicates a variant designation from Everlight Electronics. Both are ROHS3 compliant and active.

Q: Is SFH6345 a suitable replacement despite higher isolation voltage? A: Yes. SFH6345 maintains all critical electrical parameters including current transfer ratio, output current, and package type. The 5300Vrms isolation exceeds the ICPL4502 requirement and provides additional safety margin. SFH6345 is ROHS3 compliant and active in production.

Q: Why do some substitutes have different switching times? A: Turn-on and turn-off times vary by manufacturer design. ICPL4502 specifies 150ns turn-on and 400ns turn-off. Substitutes range from 200ns to 350ns turn-on and 300ns to 600ns turn-off. Verify switching time requirements in your application before selection.

Q: Are all substitutes available in the same 8-DIP package? A: Yes. All listed substitutes use the 8-DIP (0.300", 7.62mm) through-hole package, ensuring mechanical and electrical compatibility with existing PCB layouts.

Q: Which substitute offers the best RoHS compliance? A: EL4502, EL4502-V, HCPL-4502-020E, HCPL-4503-020E, and SFH6345 are all ROHS3 compliant. HCPL-4502 and HCPL-4503#020 are RoHS non-compliant.

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