HCPL0501 Optoisolator Equivalent & Substitute Parts

Part Overview

The HCPL0501 is a single-channel optoisolator with transistor output and base connection, manufactured by onsemi. This component provides 2500Vrms isolation voltage and is designed for DC input applications requiring galvanic isolation in 8-SOIC surface mount packaging. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts are necessary when the primary part is unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for higher isolation voltage ratings or extended operating temperature ranges.

Key Parameters

Parameter	Value
Number of Channels	1
Voltage - Isolation	2500Vrms
Current Transfer Ratio (Min)	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA
Turn On / Turn Off Time (Typ)	450ns, 300ns
Input Type	DC
Output Type	Transistor with Base
Voltage - Output (Max)	20V
Current - Output / Channel	8mA
Voltage - Forward (Vf) (Typ)	1.45V
Current - DC Forward (If) (Max)	25mA
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution logic for the HCPL0501 is based on the following critical parameters that must remain compatible:

Mandatory Compatibility Parameters:

Single channel configuration
Transistor output with base connection
8-SOIC surface mount package (0.154", 3.90mm Width)
DC input type
Maximum output voltage of 20V
Output current of 8mA per channel
Maximum forward current of 25mA

Allowable Variation Parameters:

Isolation voltage: Equal to or greater than 2500Vrms
Current transfer ratio: Equal to or greater than 19% minimum
Turn on/off timing: Variations acceptable within design margin
Operating temperature range: Equal to or greater than specified range
Compliance certifications: RoHS3 compliance preferred but not mandatory for functional equivalence
Packaging format: Box, Bulk, Tube, Cut Tape, or Tape & Reel formats are interchangeable for the same component

Substitute Parts Identified:

HCPL0501V (Fairchild Semiconductor) - Parametric equivalent with identical electrical specifications and packaging.

HCPL-0501 (Broadcom Limited) - Direct manufacturer variant with enhanced 3750Vrms isolation voltage, extended operating temperature range (-55°C ~ 100°C), and modified timing characteristics (200ns, 600ns).

HCPL-0501-000E (Broadcom Limited) - Similar variant with 3750Vrms isolation, extended temperature range, RoHS3 compliant, Tube packaging.

HCPL-0501-500E (Broadcom Limited) - Similar variant with 3750Vrms isolation, extended temperature range, RoHS3 compliant, Cut Tape & Digi-Reel packaging.

HCPL-0501-560E (Broadcom Limited) - Similar variant with 3750Vrms isolation, extended temperature range, RoHS3 compliant, Tape & Reel packaging, with current transfer ratio matching the original specification (19%-50%).

Parameter Comparison

Parameter	HCPL0501 (onsemi)	HCPL0501V (Fairchild)	HCPL-0501 (Broadcom)	HCPL-0501-000E (Broadcom)	HCPL-0501-500E (Broadcom)	HCPL-0501-560E (Broadcom)
Number of Channels	1	1	1	1	1	1
Voltage - Isolation	2500Vrms	2500Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms
Current Transfer Ratio (Min)	19% @ 16mA	19% @ 16mA	15% @ 16mA	15% @ 16mA	15% @ 16mA	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA	50% @ 16mA	—	—	—	50% @ 16mA
Turn On / Turn Off Time (Typ)	450ns, 300ns	450ns, 300ns	200ns, 600ns	200ns, 600ns	200ns, 600ns	200ns, 600ns
Input Type	DC	DC	DC	DC	DC	DC
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	20V	20V	20V	20V	20V	20V
Current - Output / Channel	8mA	8mA	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.45V	1.45V	1.5V	1.5V	1.5V	1.5V
Current - DC Forward (If) (Max)	25mA	25mA	25mA	25mA	25mA	25mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°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
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
RoHS Status	ROHS3 Compliant	Not specified	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

HCPL0501V (Fairchild Semiconductor) is the closest parametric equivalent, offering identical electrical specifications and operating temperature range. This part is suitable for direct replacement when Fairchild sourcing is preferred or when onsemi availability is constrained.

HCPL-0501-560E (Broadcom Limited) is the recommended substitute when higher isolation voltage (3750Vrms) and extended operating temperature range (-55°C ~ 100°C) are acceptable. This variant maintains the original current transfer ratio specification (19%-50%) and is RoHS3 compliant with Tape & Reel packaging suitable for high-volume production.

HCPL-0501-500E (Broadcom Limited) provides the same electrical and thermal performance as HCPL-0501-560E with Cut Tape & Digi-Reel packaging, suitable for mixed-volume or prototype applications.

HCPL-0501-000E (Broadcom Limited) offers identical performance to HCPL-0501-500E with Tube packaging, appropriate for lower-volume or manual assembly processes.

HCPL-0501 (Broadcom Limited) is functionally equivalent but carries RoHS non-compliance status. Selection of this variant requires compliance verification against end-product requirements.

Frequently Asked Questions (FAQ)

Q: Can HCPL0501V be used as a direct drop-in replacement for HCPL0501?

A: Yes. HCPL0501V maintains identical isolation voltage (2500Vrms), current transfer ratio (19%-50%), timing characteristics (450ns, 300ns), and operating temperature range (-40°C ~ 85°C). The 8-SOIC package is mechanically and electrically compatible. Packaging format differences (Box vs. Bulk) do not affect circuit performance.

Q: What are the advantages of using HCPL-0501-560E instead of the original HCPL0501?

A: HCPL-0501-560E provides 50% higher isolation voltage (3750Vrms vs. 2500Vrms) and an extended operating temperature range (-55°C ~ 100°C vs. -40°C ~ 85°C). The current transfer ratio specification matches the original (19%-50%). These enhancements allow operation in more demanding thermal and isolation environments. RoHS3 compliance is maintained.

Q: Are the Broadcom HCPL-0501 variants with lower current transfer ratio minimum (15% vs. 19%) acceptable substitutes?

A: HCPL-0501, HCPL-0501-000E, and HCPL-0501-500E specify a 15% minimum current transfer ratio, which is lower than the original 19% specification. These parts remain functionally compatible if circuit design margins accommodate the reduced minimum transfer ratio. HCPL-0501-560E maintains the 19% minimum specification.

Q: What is the difference between HCPL-0501-560E, HCPL-0501-500E, and HCPL-0501-000E?

A: These three parts are electrically and thermally identical. The differences are packaging formats: HCPL-0501-560E uses Tape & Reel (TR), HCPL-0501-500E uses Cut Tape (CT) & Digi-Reel, and HCPL-0501-000E uses Tube. Selection depends on manufacturing process requirements and volume considerations.

Q: Is RoHS compliance a critical factor when selecting a substitute?

A: RoHS compliance status depends on end-product regulatory requirements. HCPL0501, HCPL0501V, HCPL-0501-000E, HCPL-0501-500E, and HCPL-0501-560E are RoHS3 compliant. HCPL-0501 is RoHS non-compliant and requires compliance verification before use in regulated applications.

Q: Can timing differences between HCPL0501 (450ns, 300ns) and Broadcom variants (200ns, 600ns) affect circuit operation?

A: Timing differences must be evaluated against specific circuit requirements. The Broadcom variants feature faster turn-on (200ns vs. 450ns) and slower turn-off (600ns vs. 300ns). Circuit designs with timing-critical functions must verify compatibility with these characteristics.

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

A: Yes. All listed substitute parts use the 8-SOIC package (0.154", 3.90mm Width), ensuring mechanical and pin compatibility. Packaging format variations (Box, Bulk, Tube, Cut Tape, Tape & Reel) refer to supply format, not component package type.

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