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

Part Overview

The LTV-217-A-V-G is a 3750Vrms optoisolator with transistor output manufactured by Lite-On Inc. in 4-SSOP surface mount packaging. This component provides galvanic isolation for single-channel DC input applications with 50mA output current capability. The part is active and in production, with 868 units currently in stock. Equivalent and substitute parts are identified based on matching electrical performance, isolation voltage, output characteristics, and thermal operating range to ensure direct functional replacement in circuit designs.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 5mA
Maximum Output Voltage	80V
Output Current per Channel	50mA
Operating Temperature Range	-55°C to 110°C
Mounting Type	Surface Mount
Package	4-SOIC (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LTV-217-A-V-G is determined by the following critical parameters:

Isolation voltage of 3750Vrms
Single channel configuration
Transistor output topology
Current transfer ratio range of 80% to 160% @ 5mA
Maximum output voltage of 80V
Output current capability of 50mA per channel
Operating temperature range of -55°C to 110°C
Surface mount mounting type
4-pin package footprint (4-SOIC 0.173", 4.40mm Width)
ROHS3 compliance
MSL rating of 1 (Unlimited)

All identified substitute parts meet these core electrical and mechanical requirements. Packaging variants (4-SSOP, 4-SO, 4-SOP) are mechanically compatible within the 4-SOIC footprint specification. Timing characteristics (turn-on/turn-off and rise/fall times) remain within acceptable tolerances across all substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Isolation Voltage	CTR Min @ 5mA	CTR Max @ 5mA	Output Voltage (Max)	Output Current	Vce Sat (Max)	Operating Temp	Package	Inventory
LTV-217-A-V-G	Lite-On Inc.	3750Vrms	80%	160%	80V	50mA	400mV	-55°C ~ 110°C	4-SSOP	868
ACPL-217-50AE	Broadcom Limited	3750Vrms	80%	160%	80V	50mA	400mV	-55°C ~ 110°C	4-SO	15456
ACPL-217-56AE	Broadcom Limited	3750Vrms	80%	160%	80V	50mA	400mV	-55°C ~ 110°C	4-SO	21400
EL3H7(A)(EA)-G	Everlight Electronics Co Ltd	3750Vrms	80%	160%	80V	50mA	200mV	-55°C ~ 110°C	4-SSOP	2845
FODM217AR2	onsemi	3750Vrms	80%	160%	80V	50mA	400mV	-55°C ~ 110°C	4-SOP	2090
FODM217AR2V	onsemi	3750Vrms	80%	160%	80V	50mA	400mV	-55°C ~ 110°C	4-SOP	1292
VOS617A-7T	Vishay Semiconductor Opto Division	3750Vrms	80%	160%	80V	50mA	400mV	-55°C ~ 110°C	4-SSOP	1250
VOS617A-7X001T	Vishay Semiconductor Opto Division	3750Vrms	80%	160%	80V	50mA	400mV	-55°C ~ 110°C	4-SSOP	21174

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance and MSL rating of 1 (Unlimited), matching the primary part specification. Selection among substitutes should be based on:

Broadcom ACPL-217 Series (ACPL-217-50AE, ACPL-217-56AE): Highest inventory availability (15456 and 21400 units respectively). Both parts are REACH Unaffected. Package variant is 4-SO, functionally equivalent within the 4-SOIC footprint specification.

Everlight EL3H7(A)(EA)-G: Offers improved Vce saturation performance (200mV maximum versus 400mV), beneficial for low-voltage switching applications. Maintains 4-SSOP package matching the primary part. Inventory of 2845 units.

onsemi FODM217 Series (FODM217AR2, FODM217AR2V): Both variants provide equivalent electrical performance with REACH Unaffected status. FODM217AR2V exhibits slightly faster fall time (3µs versus 2µs). Package is 4-SOP. Combined inventory of 3382 units.

Vishay VOS617A Series (VOS617A-7T, VOS617A-7X001T): Both maintain 4-SSOP package compatibility. VOS617A-7X001T offers significantly higher inventory (21174 units). Turn-on/turn-off timing is 6µs/4µs versus 3µs/3µs on the primary part. REACH status is Vendor Undefined.

Frequently Asked Questions (FAQ)

Q: Can ACPL-217-50AE and ACPL-217-56AE be used interchangeably with LTV-217-A-V-G?

A: Yes. Both parts meet all electrical specifications including 3750Vrms isolation, 80-160% CTR @ 5mA, 80V maximum output voltage, and 50mA output current. The package variant (4-SO versus 4-SSOP) is mechanically compatible within the 4-SOIC footprint specification. Both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between EL3H7(A)(EA)-G and the primary LTV-217-A-V-G?

A: The EL3H7(A)(EA)-G provides superior Vce saturation performance at 200mV maximum compared to 400mV on the LTV-217-A-V-G. This results in lower power dissipation during transistor saturation. All other electrical parameters are identical. Both use 4-SSOP packaging.

Q: Are the onsemi FODM217AR2 and FODM217AR2V variants different?

A: Both parts are electrically equivalent with identical isolation voltage, CTR range, and output specifications. FODM217AR2V exhibits a fall time of 3µs compared to 2µs on FODM217AR2. Both use 4-SOP packaging and are ROHS3 compliant with REACH Unaffected status.

Q: How do Vishay VOS617A parts compare to the primary LTV-217-A-V-G?

A: VOS617A-7T and VOS617A-7X001T are fully equivalent in electrical performance. Turn-on and turn-off times are 6µs and 4µs respectively, compared to 3µs on both parameters for the primary part. Both maintain 4-SSOP packaging, 3750Vrms isolation, and identical output specifications. VOS617A-7X001T has significantly higher inventory availability.

Q: Can I mix different substitute parts in the same design?

A: Yes. All substitute parts meet the core electrical specifications for the LTV-217-A-V-G. However, timing characteristics vary slightly across manufacturers. For applications sensitive to switching speed, maintain consistency within a single manufacturer variant to ensure predictable circuit behavior.

Q: What packaging considerations apply when substituting parts?

A: All substitute parts use 4-pin packages (4-SSOP, 4-SO, or 4-SOP) within the 4-SOIC 0.173" (4.40mm width) footprint specification. Pin configurations are identical. PCB layout compatibility is maintained across all substitutes without design modification.

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