FOD050LR1 Equivalent & Substitute Parts

Part Overview

The FOD050LR1 is an optoisolator transistor with base output manufactured by onsemi, providing 2500Vrms isolation in an 8-SOIC surface mount package. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part delivers 1 channel isolation with transistor output and base connection, suitable for applications requiring galvanic isolation with DC input control.

Key Parameters

Parameter	Value
Voltage - Isolation	2500Vrms
Number of Channels	1
Output Type	Transistor with Base
Current Transfer Ratio (Min)	15% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA
Current - Output / Channel	8mA
Voltage - Output (Max)	7V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution for the FOD050LR1 is determined by the following critical parameters:

Isolation Voltage: Minimum 2500Vrms (higher values are acceptable)
Output Configuration: Transistor with Base output required
Number of Channels: Single channel
Package Compatibility: 8-SOIC surface mount form factor
Current Transfer Ratio Range: 15% to 50% @ 16mA
Output Current Capability: 8mA per channel
Maximum Output Voltage: 7V
Input Type: DC

Substitutes are categorized as parametric equivalents (identical specifications) or similar alternatives (enhanced isolation voltage with compatible electrical characteristics).

Parameter Comparison

Parameter	FOD050LR1	FOD050LR2	HCPL-050L-000E	HCPL-050L-500E
Manufacturer	onsemi	onsemi	Broadcom Limited	Broadcom Limited
Product Status	Obsolete	Active	Active	Active
Voltage - Isolation	2500Vrms	2500Vrms	3750Vrms	3750Vrms
Number of Channels	1	1	1	1
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base
Current Transfer Ratio (Min)	15% @ 16mA	15% @ 16mA	19% @ 16mA	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA	50% @ 16mA	50% @ 16mA	50% @ 16mA
Current - Output / Channel	8mA	8mA	8mA	8mA
Voltage - Output (Max)	7V	7V	7V	7V
Voltage - Forward (Vf) (Typ)	1.45V	1.45V	1.5V	1.5V
Current - DC Forward (If) (Max)	25mA	25mA	25mA	25mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

FOD050LR2 (onsemi): Direct parametric equivalent with identical electrical specifications and operating temperature range. Active product status ensures ongoing availability and supply chain continuity. Recommended as the primary replacement for FOD050LR1 in new designs and production transitions.

HCPL-050L-000E and HCPL-050L-500E (Broadcom Limited): Similar alternatives offering enhanced isolation voltage (3750Vrms vs. 2500Vrms) with compatible electrical characteristics. Both parts maintain identical output current, voltage ratings, and package form factor. Extended operating temperature range (-55°C to 100°C) provides additional thermal margin. ROHS3 compliance confirmed for both variants. Selection between these Broadcom options depends on packaging requirements: HCPL-050L-000E supplied in Tube packaging; HCPL-050L-500E supplied in Cut Tape & Digi-Reel format.

Frequently Asked Questions (FAQ)

Q: Can FOD050LR2 be used as a direct replacement for FOD050LR1?

A: Yes. FOD050LR2 is a parametric equivalent with identical isolation voltage (2500Vrms), current transfer ratio range (15-50% @ 16mA), output current (8mA), and operating temperature range (-40°C to 85°C). Both use 8-SOIC surface mount packaging. The primary difference is product status: FOD050LR1 is obsolete while FOD050LR2 is active.

Q: What are the differences between onsemi FOD050LR2 and Broadcom HCPL-050L series?

A: The Broadcom HCPL-050L-000E and HCPL-050L-500E provide higher isolation voltage (3750Vrms) compared to FOD050LR2 (2500Vrms). All other electrical parameters remain compatible: 8mA output current, 7V maximum output voltage, and transistor with base output configuration. The Broadcom parts also offer extended operating temperature range (-55°C to 100°C vs. -40°C to 85°C).

Q: Are there packaging differences between substitute options?

A: All four parts use 8-SOIC surface mount packages with identical physical dimensions (0.154" width, 3.90mm). Packaging format differs: FOD050LR1 and FOD050LR2 are available in standard packaging; HCPL-050L-000E is supplied in Tube; HCPL-050L-500E is supplied in Cut Tape & Digi-Reel format. PCB footprint compatibility is maintained across all options.

Q: Which substitute should be selected for new designs?

A: FOD050LR2 is recommended for designs requiring exact parameter matching with the original FOD050LR1. For applications where higher isolation voltage provides system margin, HCPL-050L-000E or HCPL-050L-500E offer enhanced performance with extended temperature range and ROHS3 compliance.

Q: Are all substitutes ROHS3 compliant?

A: FOD050LR2, HCPL-050L-000E, and HCPL-050L-500E are confirmed ROHS3 compliant. RoHS status for the original FOD050LR1 is not specified in available documentation.

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