FODM217AV Equivalent & Substitute Parts

Part Overview

The FODM217AV is an optoisolator with phototransistor output manufactured by onsemi. It provides galvanic isolation of 3750Vrms in a single-channel configuration with transistor output topology. The device is housed in a 4-SOP surface mount package and is classified as Active product status with full RoHS3 compliance. Equivalent and substitute parts are identified based on matching electrical isolation ratings, output characteristics, and mechanical compatibility within the optoisolator category.

Key Parameters

Parameter	Value
Manufacturer Part Number	FODM217AV
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Output Type	Transistor
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 5mA
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Operating Temperature	-55°C ~ 110°C
Package / Case	4-SOIC (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the FODM217AV are identified based on the following critical parameters that define functional equivalence:

Voltage isolation rating of 3750Vrms
Single-channel configuration
Transistor output topology
Current transfer ratio range of 80% to 160% @ 5mA
Maximum output voltage of 80V
Maximum output current of 50mA per channel
Operating temperature range of -55°C to 110°C
Surface mount package with 4-pin configuration
RoHS3 compliance and REACH unaffected status

Parts meeting all these criteria are classified as parametric equivalents and may be substituted in applications where the FODM217AV is specified, subject to package footprint compatibility verification.

Parameter Comparison

Parameter	FODM217AV	FODM217A	EL3H7(A)-G
Manufacturer	onsemi	onsemi	Everlight Electronics Co Ltd
Number of Channels	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	3750Vrms
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 5mA	160% @ 5mA	160% @ 5mA
Voltage - Output (Max)	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	1.2V
Current - DC Forward (If) (Max)	50 mA	50 mA	50 mA
Vce Saturation (Max)	400mV	400mV	200mV
Operating Temperature	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)
Supplier Device Package	4-SOP	4-SOP	4-SSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—FODM217AV, FODM217A, and EL3H7(A)-G—are Active status products with full RoHS3 compliance and REACH unaffected designation. They meet identical electrical isolation and output specifications.

FODM217A is a direct parametric equivalent from the same manufacturer (onsemi) and series (FODM217), differing only in packaging designation (4-SOP vs. 4-SOP). This part carries the highest compatibility assurance for direct substitution.

EL3H7(A)-G is a parametric equivalent from Everlight Electronics with identical isolation voltage, current transfer ratio, and output ratings. The primary distinction is a lower Vce saturation maximum of 200mV compared to 400mV in the onsemi variants, which represents improved saturation performance. The supplier device package designation differs (4-SSOP), though the mechanical footprint remains compatible at 4-SOIC (0.173", 4.40mm Width). All three parts maintain identical operating temperature ranges and forward voltage characteristics.

Selection between these equivalents should be based on supply chain availability, lead time requirements, and any design-specific performance preferences regarding saturation voltage characteristics.

Frequently Asked Questions (FAQ)

Q: Can FODM217A be used as a direct replacement for FODM217AV?

A: Yes. FODM217A is a parametric equivalent from onsemi within the same FODM217 series. All electrical specifications, isolation ratings, output characteristics, and operating parameters are identical. Both are Active status products with RoHS3 compliance.

Q: What is the difference between FODM217AV and EL3H7(A)-G?

A: Both parts meet identical isolation voltage (3750Vrms), current transfer ratio (80%-160% @ 5mA), and output specifications (80V max, 50mA max). The EL3H7(A)-G has a lower Vce saturation maximum of 200mV versus 400mV in the FODM217AV. The EL3H7(A)-G is manufactured by Everlight Electronics rather than onsemi. Both are Active status with RoHS3 compliance.

Q: Are the package footprints identical across all three parts?

A: All three parts use a 4-SOIC package with 0.173" width (4.40mm). The supplier device package designations differ (4-SOP for onsemi parts, 4-SSOP for Everlight), but the mechanical footprint dimensions are compatible for PCB layout purposes.

Q: What parameters must match for substitution eligibility?

A: Critical parameters for substitution are: 3750Vrms isolation voltage, single-channel configuration, transistor output topology, 80%-160% current transfer ratio @ 5mA, 80V maximum output voltage, 50mA maximum output current, -55°C to 110°C operating temperature range, and 4-pin surface mount package. All three listed parts meet these criteria.

Q: Are all three parts currently available?

A: All three parts carry Active product status. Inventory levels vary: FODM217AV (3932 pcs), FODM217A (6400 pcs), and EL3H7(A)-G (2028 pcs) are reported as new original stock. Availability should be confirmed with your supplier for current lead times.

Q: Do all parts have the same compliance certifications?

A: Yes. All three parts are RoHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. Moisture sensitivity level is 1 (Unlimited) for all parts.

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