FODM453R2V Optoisolator Equivalent & Substitute Parts

Part Overview

The FODM453R2V is an active optoisolator manufactured by onsemi, classified as a transistor output optoisolator with 3750Vrms isolation voltage. This single-channel device operates in the DC input category and is packaged in a 6-SOIC (5-Mini-Flat) surface mount configuration. The part maintains active product status with full ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain disruptions, or packaging format preferences while maintaining functional equivalence within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	FODM453R2V
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	20% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA
Turn On / Turn Off Time (Typ)	400ns, 350ns
Input Type	DC
Output Type	Transistor
Voltage - Output (Max)	20V
Current - Output / Channel	8mA
Voltage - Forward (Vf) (Typ)	1.6V
Current - DC Forward (If) (Max)	25 mA
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	6-SOIC (0.173", 4.40mm Width), 5 Leads
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the FODM453R2V are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 3750Vrms isolation voltage, 20-50% current transfer ratio at 16mA input, 400ns/350ns turn-on/turn-off timing, 20V maximum output voltage, 8mA output current per channel, and -40°C to 85°C operating temperature range. These parts differ only in packaging format (Cut Tape vs. Tape & Reel) or minor product variants within the onsemi FODM series.

Similar Substitutes from Broadcom Limited (ACPL series) maintain functional compatibility through equivalent isolation voltage (3750Vrms or 4000Vrms), matching output voltage (20V or 24V maximum), identical output current (8mA), and compatible package footprint (6-SOIC, 5 Leads). These parts operate within the same temperature range or extended ranges and share DC input/transistor output architecture. Differences in current transfer ratio specifications and turn-on/turn-off timing reflect design variations between manufacturers but do not preclude functional substitution in applications where the FODM453R2V operates within its specified parameter window.

Parameter Comparison

Part Number	Manufacturer	Voltage - Isolation	Current Transfer Ratio (Min @ mA)	Current Transfer Ratio (Max @ mA)	Turn On / Turn Off Time (Typ)	Voltage - Output (Max)	Current - Output / Channel	Operating Temperature	Packaging
FODM453R2V	onsemi	3750Vrms	20% @ 16mA	50% @ 16mA	400ns, 350ns	20V	8mA	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®
FODM452R2	onsemi	3750Vrms	20% @ 16mA	50% @ 16mA	400ns, 350ns	20V	8mA	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®
FODM452R2V	onsemi	3750Vrms	20% @ 16mA	50% @ 16mA	400ns, 350ns	20V	8mA	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®
FODM453R2	onsemi	3750Vrms	20% @ 16mA	50% @ 16mA	400ns, 350ns	20V	8mA	-40°C ~ 85°C	Tape & Reel (TR)
ACPL-M43T-000E	Broadcom Limited	4000Vrms	32% @ 10mA	100% @ 10mA	150ns, 500ns	20V	8mA	-40°C ~ 125°C	Tube
ACPL-M43T-500E	Broadcom Limited	4000Vrms	32% @ 10mA	100% @ 10mA	150ns, 500ns	20V	8mA	-40°C ~ 125°C	Cut Tape (CT) & Digi-Reel®
ACPL-M43U-000E	Broadcom Limited	3750Vrms	32% @ 10mA	80% @ 10mA	200ns, 300ns	20V	8mA	-40°C ~ 125°C	Tube
ACPL-M49T-000E	Broadcom Limited	4000Vrms	32% @ 10mA	80% @ 10mA	Not specified	20V	8mA	-40°C ~ 125°C	Tube
ACPL-M49T-500E	Broadcom Limited	4000Vrms	32% @ 10mA	80% @ 10mA	Not specified	20V	8mA	-40°C ~ 125°C	Cut Tape (CT) & Digi-Reel®
ACPL-M50L-000E	Broadcom Limited	3750Vrms	100% @ 3mA	200% @ 3mA	200ns, 380ns	24V	8mA	-40°C ~ 105°C	Tube
ACPL-M50L-500E	Broadcom Limited	3750Vrms	100% @ 3mA	200% @ 3mA	200ns, 380ns	24V	8mA	-40°C ~ 105°C	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Parametric Equivalents (onsemi FODM Series): FODM452R2, FODM452R2V, and FODM453R2 are direct functional replacements for FODM453R2V. All maintain identical electrical performance across isolation voltage, current transfer ratio, timing characteristics, and output specifications. Selection among these variants depends solely on packaging format availability: Cut Tape & Digi-Reel® for standard production environments, or Tape & Reel for high-volume automated assembly. All variants maintain active product status and ROHS3 compliance.

Similar Substitutes (Broadcom ACPL Series): The ACPL-M43T-000E, ACPL-M43T-500E, ACPL-M43U-000E, ACPL-M49T-000E, ACPL-M49T-500E, ACPL-M50L-000E, and ACPL-M50L-500E provide functional alternatives with compatible package footprints and output specifications. These parts maintain 20V or 24V maximum output voltage and 8mA output current matching the FODM453R2V requirements. The ACPL-M43U-000E and ACPL-M50L series offer extended operating temperature ranges (-40°C to 125°C or -40°C to 105°C respectively) compared to the FODM453R2V (-40°C to 85°C), providing thermal margin in demanding applications. All Broadcom substitutes carry ROHS3 compliance and MSL 1 rating. The ACPL-M43T variants include AEC-Q100 automotive qualification, applicable for automotive-grade applications.

Frequently Asked Questions (FAQ)

Q: Can FODM452R2 or FODM452R2V be used as direct replacements for FODM453R2V?

A: Yes. FODM452R2 and FODM452R2V are parametric equivalents with identical electrical specifications: 3750Vrms isolation, 20-50% current transfer ratio at 16mA, 400ns/350ns switching times, 20V output maximum, and 8mA output current. Differences exist only in packaging format (Cut Tape & Digi-Reel® vs. Tape & Reel). Both maintain active product status and ROHS3 compliance.

Q: What are the key differences between onsemi FODM and Broadcom ACPL substitutes?

A: onsemi FODM variants (FODM452R2, FODM452R2V, FODM453R2) maintain identical electrical specifications to FODM453R2V. Broadcom ACPL variants introduce design differences: higher current transfer ratios (32-100% at 10mA vs. 20-50% at 16mA), different switching timing profiles, and extended operating temperature ranges. ACPL-M50L series offers higher maximum output voltage (24V vs. 20V) and higher current transfer ratios (100-200% at 3mA). These differences do not preclude substitution but require circuit-level verification of input drive current and output loading conditions.

Q: Are Broadcom ACPL parts compatible with the same PCB footprint?

A: Yes. All ACPL substitutes use the 6-SOIC (0.173", 4.40mm Width) package with 5 leads, matching the FODM453R2V footprint. PCB layout compatibility is maintained across all listed substitutes.

Q: Which substitute offers the widest operating temperature range?

A: ACPL-M43T-000E, ACPL-M43T-500E, ACPL-M49T-000E, and ACPL-M49T-500E operate across -40°C to 125°C, providing 40°C additional upper temperature margin compared to FODM453R2V (-40°C to 85°C). ACPL-M50L variants operate to 105°C. Selection depends on thermal environment requirements.

Q: What packaging formats are available for each substitute?

A: onsemi FODM variants are available in Cut Tape & Digi-Reel® (FODM452R2, FODM452R2V, FODM453R2V) or Tape & Reel (FODM453R2). Broadcom ACPL variants are supplied in Tube (ACPL-M43T-000E, ACPL-M43U-000E, ACPL-M49T-000E, ACPL-M50L-000E) or Cut Tape & Digi-Reel® (ACPL-M43T-500E, ACPL-M49T-500E, ACPL-M50L-500E). Packaging selection affects handling, storage, and assembly process compatibility.

Q: Do all substitutes maintain ROHS3 compliance?

A: Yes. All listed substitutes—both onsemi FODM and Broadcom ACPL variants—carry ROHS3 compliance certification. Moisture sensitivity level (MSL 1, Unlimited) is consistent across all parts.

Q: Which substitute is recommended for automotive applications?

A: ACPL-M43T-000E and ACPL-M43T-500E carry AEC-Q100 automotive qualification and Broadcom R²Coupler™ series designation, making them suitable for automotive-grade designs. These parts maintain 4000Vrms isolation voltage and -40°C to 125°C operating range.

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