LTV-217-D-V-G Equivalent & Substitute Parts

Part Overview

The LTV-217-D-V-G is an optoisolator with transistor output manufactured by Lite-On Inc. This single-channel device provides 3750Vrms isolation and is designed for DC input applications requiring galvanic isolation in compact surface-mount packages. The part is currently active in production. Substitute parts are identified based on matching electrical performance parameters and compatible package specifications to support design flexibility and supply chain alternatives.

Key Parameters

Parameter	Value
Number of Channels	1
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	300% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Turn On / Turn Off Time (Typ)	3µs, 3µs
Rise / Fall Time (Typ)	2µs, 3µs
Input Type	DC
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Voltage - Forward (Vf) (Typ)	1.2V
Current - DC Forward (If) (Max)	50mA
Vce Saturation (Max)	400mV
Operating Temperature	-55°C ~ 110°C
Mounting Type	Surface Mount
Package / Case	4-SOIC (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LTV-217-D-V-G are qualified based on the following critical parameters that determine functional equivalence:

Single-channel configuration
3750Vrms isolation voltage
Current transfer ratio range of 300% to 600% @ 5mA
Transistor output topology
Maximum output voltage of 80V
Maximum output current of 50mA per channel
DC input type
Operating temperature range of -55°C to 110°C
Surface-mount technology with 4-pin SOIC package footprint
ROHS3 compliance

All identified substitutes meet these electrical and mechanical requirements. Package designations (4-SSOP, 4-SO, 4-SOP) are compatible variants of the 4-SOIC footprint standard.

Parameter Comparison

Parameter	LTV-217-D-V-G (Lite-On)	ACPL-217-50DE (Broadcom)	FODM217DR2 (onsemi)	FODM217DR2V (onsemi)
Number of Channels	1	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	3750Vrms	3750Vrms
Current Transfer Ratio (Min)	300% @ 5mA	300% @ 5mA	300% @ 5mA	300% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	600% @ 5mA	600% @ 5mA
Turn On / Turn Off Time (Typ)	3µs, 3µs	3µs, 3µs	3µs, 3µs	3µs, 3µs
Rise / Fall Time (Typ)	2µs, 3µs	2µs, 3µs	2µs, 3µs	3µs, 3µs
Input Type	DC	DC	DC	DC
Output Type	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	1.2V	1.2V
Current - DC Forward (If) (Max)	50mA	50mA	50mA	50mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV
Operating Temperature	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SOIC	4-SOIC	4-SOIC	4-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance and MSL Level 1 rating, matching the environmental and regulatory requirements of the LTV-217-D-V-G. Selection among these equivalents may be based on:

Manufacturer availability and supply chain considerations
Packaging format preference (Cut Tape & Digi-Reel vs. Tape & Reel)
Inventory levels and lead time requirements
Design documentation and qualification history with specific manufacturers

The FODM217DR2V variant exhibits a rise/fall time specification of 3µs, 3µs compared to the 2µs, 3µs of the primary part and other substitutes. This difference remains within acceptable switching performance for most DC isolation applications but should be evaluated against specific circuit timing requirements.

Frequently Asked Questions (FAQ)

Q: Can ACPL-217-50DE be used as a direct replacement for LTV-217-D-V-G?

A: Yes. The ACPL-217-50DE meets all electrical parameters and operates within the same temperature range. Both devices use compatible 4-SOIC package footprints. The primary difference is packaging format (Cut Tape & Digi-Reel vs. standard reel).

Q: What is the difference between FODM217DR2 and FODM217DR2V?

A: Both onsemi parts are electrically equivalent with one exception: FODM217DR2V specifies rise/fall time of 3µs, 3µs, while FODM217DR2 specifies 2µs, 3µs. This timing difference is minor and both parts maintain the same isolation voltage, current transfer ratio, and output specifications.

Q: Are the package designations 4-SSOP, 4-SO, and 4-SOP interchangeable?

A: These designations refer to compatible variants of the 4-pin SOIC package standard with identical 0.173" (4.40mm) width. All parts listed share the same footprint and pin configuration, allowing direct PCB substitution.

Q: Do all substitute parts have the same RoHS and MSL ratings?

A: Yes. All parts are ROHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity), matching the environmental qualification of the LTV-217-D-V-G.

Q: Which substitute has the highest inventory availability?

A: FODM217DR2 from onsemi shows 45,400 pieces in stock, followed by FODM217DR2V with 45,100 pieces. ACPL-217-50DE (Broadcom) has 4,400 pieces available.

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