FODM452V Optoisolator Equivalent & Substitute Parts

Part Overview

The FODM452V is an active optoisolator transistor output device manufactured by onsemi, designed for high-voltage isolation applications. This single-channel optoisolator provides 3750Vrms isolation with transistor output configuration in a 5-Mini-Flat surface mount package. The device is ROHS3 compliant and currently in active production status with 1451 units in stock.

Equivalent and substitute parts are identified based on matching electrical isolation ratings, output configurations, channel count, and mechanical compatibility within the optoisolator transistor output category.

Key Parameters

Parameter	FODM452V
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Output Type	Transistor
Current Transfer Ratio (Min)	20% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA
Voltage - Output (Max)	20V
Current - Output / Channel	8mA
Operating Temperature	-40°C ~ 85°C
Package / Case	6-SOIC (0.173", 4.40mm Width), 5 Leads
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the FODM452V are classified into two categories based on parametric alignment:

Parametric Equivalent: FODM453 matches all critical electrical parameters including 3750Vrms isolation, 1 channel, transistor output, 20-50% current transfer ratio at 16mA, 20V maximum output voltage, and 8mA output current. This part is functionally interchangeable with identical operating temperature range and package configuration.

Similar Substitutes: Parts from Broadcom Limited (ACPL-M43T-000E, ACPL-M43T-500E, ACPL-M43U-000E, ACPL-M49T-000E, ACPL-M49T-500E, ACPL-M50L-000E, ACPL-M50L-500E, ACPL-M50L-560E, HCPL-M452-000E) are classified as similar based on matching the following core criteria: single-channel configuration, transistor output type, 3750Vrms or 4000Vrms isolation voltage, surface mount 6-SOIC package with 5 leads, 20V or 24V maximum output voltage, and 8mA output current per channel. These parts maintain compatibility within the optoisolator transistor output category but exhibit variations in current transfer ratio specifications, switching timing characteristics, and operating temperature ranges.

Parameter Comparison

Parameter	FODM452V	FODM453	ACPL-M43T-000E	ACPL-M43T-500E	ACPL-M43U-000E	ACPL-M49T-000E	ACPL-M49T-500E	ACPL-M50L-000E	ACPL-M50L-500E	ACPL-M50L-560E	HCPL-M452-000E
Voltage - Isolation	3750Vrms	3750Vrms	4000Vrms	4000Vrms	3750Vrms	4000Vrms	4000Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms
Number of Channels	1	1	1	1	1	1	1	1	1	1	1
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Current Transfer Ratio (Min)	20% @ 16mA	20% @ 16mA	32% @ 10mA	32% @ 10mA	32% @ 10mA	32% @ 10mA	32% @ 10mA	100% @ 3mA	100% @ 3mA	100% @ 3mA	20% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA	50% @ 16mA	100% @ 10mA	100% @ 10mA	80% @ 10mA	80% @ 10mA	80% @ 10mA	200% @ 3mA	200% @ 3mA	200% @ 3mA	50% @ 16mA
Voltage - Output (Max)	20V	20V	20V	20V	20V	20V	20V	24V	24V	24V	20V
Current - Output / Channel	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.6V	1.6V	1.55V	1.55V	1.5V	1.5V	1.5V	1.5V	1.5V	1.5V	1.5V
Current - DC Forward (If) (Max)	25mA	25mA	20mA	20mA	20mA	20mA	20mA	20mA	20mA	20mA	25mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 100°C
Package / Case	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Replacement: FODM453 is the parametric equivalent for FODM452V. Both devices share identical electrical specifications, operating temperature range, and package configuration. Selection between these parts depends on inventory availability and supplier lead times.

Broadcom R²Coupler™ Series Substitutes: ACPL-M43T-000E, ACPL-M43T-500E, ACPL-M43U-000E, ACPL-M49T-000E, and ACPL-M49T-500E offer extended operating temperature ranges (-40°C to 125°C) compared to the FODM452V (-40°C to 85°C). These parts are suitable for applications requiring higher temperature performance. ACPL-M43T variants provide 4000Vrms isolation with higher current transfer ratios (32-100% @ 10mA). ACPL-M43U-000E and ACPL-M49T variants maintain 3750Vrms isolation with 32-80% current transfer ratios @ 10mA.

Broadcom ACPL-M50L Series Substitutes: ACPL-M50L-000E, ACPL-M50L-500E, and ACPL-M50L-560E feature significantly higher current transfer ratios (100-200% @ 3mA) and support 24V maximum output voltage compared to the FODM452V 20V rating. These parts are suitable for applications requiring higher output voltage capability and lower input current requirements. Operating temperature range extends to -40°C to 105°C.

Broadcom HCPL-M452-000E: This part maintains identical current transfer ratio specifications (20-50% @ 16mA) and 3750Vrms isolation as the FODM452V. The extended operating temperature range (-55°C to 100°C) accommodates wider environmental conditions. All parts maintain ROHS3 compliance and active production status.

Frequently Asked Questions (FAQ)

Q: Can FODM453 be used as a direct drop-in replacement for FODM452V?

A: Yes. FODM453 is a parametric equivalent with matching isolation voltage (3750Vrms), current transfer ratio (20-50% @ 16mA), output voltage (20V maximum), output current (8mA), operating temperature range (-40°C to 85°C), and package configuration (6-SOIC, 5 leads). No circuit modifications are required.

Q: What is the primary difference between FODM452V and the Broadcom ACPL-M43 series?

A: The ACPL-M43T variants provide higher isolation voltage (4000Vrms vs. 3750Vrms) and higher current transfer ratios (32-100% @ 10mA vs. 20-50% @ 16mA). The ACPL-M43U-000E maintains 3750Vrms isolation but with 32-80% current transfer ratio @ 10mA. All ACPL-M43 variants support extended operating temperature to 125°C and include AEC-Q100 automotive qualification.

Q: When should ACPL-M50L series parts be selected over FODM452V?

A: ACPL-M50L parts are selected when applications require higher output voltage capability (24V vs. 20V maximum) or lower input current requirements (100-200% CTR @ 3mA vs. 20-50% @ 16mA). These parts maintain 3750Vrms isolation and support operating temperatures to 105°C.

Q: Are all substitute parts compatible with the same PCB footprint as FODM452V?

A: Yes. All listed substitute parts use the 6-SOIC (0.173", 4.40mm Width) surface mount package with 5 leads, ensuring mechanical and electrical compatibility with existing FODM452V PCB layouts.

Q: What compliance certifications apply to these optoisolator parts?

A: All parts listed are ROHS3 compliant and REACH unaffected. ACPL-M43T-000E and ACPL-M43T-500E include AEC-Q100 automotive qualification. All parts maintain active production status.

Q: How do switching time specifications differ between FODM452V and substitute parts?

A: FODM452V specifies 400ns turn-on and 350ns turn-off time. HCPL-M452-000E specifies 200ns turn-on and 600ns turn-off time. ACPL-M43T variants specify 150ns turn-on and 500ns turn-off time. ACPL-M43U-000E and ACPL-M49T variants specify 200ns turn-on and 300ns turn-off time. ACPL-M50L variants specify 200ns turn-on and 380ns turn-off time. Application timing requirements determine appropriate part selection.

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