HCPL-050L#500 Equivalent & Substitute Parts

Part Overview

The HCPL-050L#500 is a high-voltage optoisolator transistor manufactured by Broadcom Limited, designed for galvanic isolation applications requiring 3750Vrms isolation voltage. This component features a single-channel transistor output with base connection in an 8-SO surface mount package. The part is currently discontinued at DiGi Electronics, making identification of equivalent and substitute components essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL-050L#500
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
Output Type	Transistor with Base
Voltage - Output (Max)	7V
Current - Output / Channel	8mA
Voltage - Forward (Vf) (Typ)	1.5V
Current - DC Forward (If) (Max)	25mA
Operating Temperature	-55°C ~ 100°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-050L#500 is determined by the following critical parameters:

Mandatory Matching Parameters:

Number of Channels: 1
Output Type: Transistor with Base
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Input Type: DC

Allowable Parameter Variations:

Voltage - Isolation: Must be ≥3750Vrms (equal or higher isolation rating acceptable)
Current Transfer Ratio: Range must encompass or exceed the original specification
Turn On / Turn Off Time: Faster switching times acceptable
Operating Temperature: Range may be narrower if application requirements permit
Voltage - Forward (Vf): Minor variations acceptable within typical operating conditions
RoHS Status: May differ from original part

Two substitute parts meet these criteria and are identified below.

Parameter Comparison

Parameter	HCPL-050L#500	HCPL-050L-500E	FOD050L
Manufacturer	Broadcom Limited	Broadcom Limited	onsemi
Number of Channels	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	2500Vrms
Current Transfer Ratio (Min)	19% @ 16mA	19% @ 16mA	15% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA	50% @ 16mA	50% @ 16mA
Turn On / Turn Off Time (Typ)	200ns, 600ns	200ns, 600ns	1µs, 1µs (Max)
Output Type	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	7V	7V	7V
Current - Output / Channel	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.5V	1.5V	1.45V
Current - DC Forward (If) (Max)	25mA	25mA	25mA
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Active	Active

Engineering Selection Recommendations

HCPL-050L-500E (Parametric Equivalent)

The HCPL-050L-500E is the direct parametric equivalent to the HCPL-050L#500. Both parts are manufactured by Broadcom Limited and share identical electrical specifications including 3750Vrms isolation voltage, current transfer ratio range, and switching times. The HCPL-050L-500E is currently in active production status with higher inventory availability. This part is ROHS3 compliant, addressing regulatory requirements that may not have been applicable to the original discontinued part. Pin-for-pin compatibility and identical package specifications ensure direct substitution without circuit redesign.

FOD050L (Functional Substitute)

The FOD050L manufactured by onsemi is a functional substitute suitable for applications where isolation voltage requirements can be met at 2500Vrms. This part shares the same package, output type, and channel configuration. The FOD050L exhibits slower switching times (1µs maximum versus 200ns/600ns typical) and a lower minimum current transfer ratio (15% versus 19%), which may impact circuit performance in timing-critical applications. The operating temperature range is narrower (-40°C ~ 85°C versus -55°C ~ 100°C). The FOD050L is ROHS3 compliant and currently in active production. Selection of this part requires verification that the reduced isolation voltage and switching characteristics are acceptable for the target application.

Frequently Asked Questions (FAQ)

Q: Can HCPL-050L-500E be used as a direct replacement for HCPL-050L#500?

A: Yes. The HCPL-050L-500E is a parametric equivalent with identical electrical specifications and package configuration. No circuit modifications are required for substitution.

Q: What are the key differences between HCPL-050L-500E and FOD050L?

A: The primary differences are isolation voltage (3750Vrms versus 2500Vrms), switching speed (200ns/600ns versus 1µs maximum), and minimum current transfer ratio (19% versus 15%). The FOD050L also has a narrower operating temperature range (-40°C ~ 85°C versus -55°C ~ 100°C).

Q: Is FOD050L suitable for all applications using HCPL-050L#500?

A: FOD050L is suitable only for applications where the reduced isolation voltage (2500Vrms) and slower switching times are acceptable. Applications requiring the full 3750Vrms isolation rating or faster switching response must use HCPL-050L-500E.

Q: Are there packaging differences between these parts?

A: All three parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package. Physical footprint and pin configuration are identical, allowing direct PCB layout compatibility.

Q: What is the inventory status of these substitute parts?

A: HCPL-050L-500E has 1203 pieces in stock. FOD050L has 3824 pieces in stock. Both are in active production status.

Q: Do the substitute parts meet current RoHS requirements?

A: Yes. Both HCPL-050L-500E and FOD050L are ROHS3 compliant, addressing current regulatory requirements for electronic components.

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