HCPL-0454 Equivalent & Substitute Parts

Part Overview

The HCPL-0454 is a single-channel optoisolator with transistor output, rated for 3750Vrms isolation voltage. Manufactured by Broadcom Limited, this component is classified as Active and remains in production. The 8-SOIC surface mount package provides compact integration for high-speed isolation applications requiring galvanic separation between logic and power circuits. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the specified parameter ranges.

Key Parameters

Parameter	Value
Number of Channels	1
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	21% @ 16mA
Turn On / Turn Off Time (Typ)	200ns, 300ns
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-SOIC (0.154", 3.90mm Width)

Substitute Part Grouping Explanation

Substitute parts for the HCPL-0454 are classified based on electrical and mechanical compatibility. The primary substitution criteria are:

Parametric Equivalents maintain identical electrical specifications across isolation voltage, current transfer ratio, switching times, output voltage, and output current. These parts are direct functional replacements with no circuit redesign required.

Manufacturer Recommended Alternatives provide equivalent functionality with allowable variations in isolation voltage, current transfer ratio range, switching characteristics, and operating temperature. These parts require verification that the application tolerates the specified parameter deviations.

The critical parameters determining substitutability are:

Single-channel configuration
Transistor output topology
8-SOIC package footprint compatibility
DC input type
Maximum output voltage and current ratings
Operating temperature range overlap

Parameter Comparison

Parameter	HCPL-0454	HCPL-0454#060	HCPL-0454-000E	HCPL0453	SFH6343T
Manufacturer	Broadcom Limited	Broadcom Limited	Broadcom Limited	Fairchild Semiconductor	Vishay Semiconductor Opto Division
Number of Channels	1	1	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	3750Vrms	2500Vrms	4000Vrms
Current Transfer Ratio (Min)	21% @ 16mA	21% @ 16mA	21% @ 16mA	19% @ 16mA	19% @ 16mA
Current Transfer Ratio (Max)	—	—	—	50% @ 16mA	50% @ 16mA
Turn On / Turn Off Time (Typ)	200ns, 300ns	200ns, 300ns	200ns, 300ns	450ns, 300ns	250ns, 500ns
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	20V	20V	20V	20V	25V
Current - Output / Channel	8mA	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.5V	1.5V	1.5V	1.45V	1.6V
Current - DC Forward (If) (Max)	25mA	25mA	25mA	25mA	25mA
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-40°C ~ 85°C	-55°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Product Status	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant	—	ROHS3 Compliant

Engineering Selection Recommendations

HCPL-0454#060 is a parametric equivalent manufactured by Broadcom Limited with identical electrical specifications. This part is suitable for direct substitution in all applications where the HCPL-0454 is specified. The primary distinction is packaging format (Tube vs. standard packaging).

HCPL-0454-000E is a parametric equivalent manufactured by Broadcom Limited with identical electrical specifications and ROHS3 compliance. This variant is suitable for direct substitution and is recommended for applications requiring RoHS compliance certification.

HCPL0453 manufactured by Fairchild Semiconductor provides equivalent functionality with the following parameter deviations: isolation voltage reduced to 2500Vrms, current transfer ratio range expanded to 19–50% @ 16mA, turn-on time increased to 450ns, and operating temperature range limited to -40°C ~ 85°C. This part is suitable only for applications where the reduced isolation voltage and narrower temperature range are acceptable.

SFH6343T manufactured by Vishay Semiconductor Opto Division provides equivalent functionality with the following parameter deviations: isolation voltage increased to 4000Vrms, current transfer ratio range 19–50% @ 16mA, turn-off time increased to 500ns, and maximum output voltage increased to 25V. This part is suitable for applications requiring higher isolation voltage or output voltage capability.

Frequently Asked Questions (FAQ)

Q: Can HCPL-0454#060 be used as a direct replacement for HCPL-0454?

A: Yes. HCPL-0454#060 is a parametric equivalent with identical electrical specifications. The difference is packaging format. Both parts are suitable for direct substitution without circuit modification.

Q: What is the primary advantage of HCPL-0454-000E over HCPL-0454?

A: HCPL-0454-000E maintains identical electrical specifications while providing ROHS3 compliance. This variant is required for applications subject to RoHS regulations.

Q: Can HCPL0453 replace HCPL-0454 in all applications?

A: No. HCPL0453 has reduced isolation voltage (2500Vrms vs. 3750Vrms) and a narrower operating temperature range (-40°C ~ 85°C vs. -55°C ~ 100°C). Substitution is valid only when the application tolerates these parameter reductions.

Q: What are the key differences between SFH6343T and HCPL-0454?

A: SFH6343T provides higher isolation voltage (4000Vrms vs. 3750Vrms) and higher maximum output voltage (25V vs. 20V). Turn-off time is increased to 500ns. These characteristics make SFH6343T suitable for applications requiring enhanced isolation or higher output voltage capability.

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

A: Yes. All listed substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, ensuring mechanical compatibility and identical PCB footprint.

Q: Which substitute part is recommended for new designs?

A: Selection depends on application requirements. For RoHS compliance, use HCPL-0454-000E. For higher isolation voltage, use SFH6343T. For cost optimization with reduced isolation voltage tolerance, use HCPL0453. For direct equivalence without compliance requirements, use HCPL-0454#060.

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