LTV-217-A-G Equivalent & Substitute Parts

Part Overview

The LTV-217-A-G is an optoisolator with transistor output manufactured by Lite-On Inc., designed for 3750Vrms isolation applications. This single-channel device operates in the 4-SSOP package and is actively produced. Substitute parts are identified based on matching electrical performance parameters, isolation voltage ratings, and mechanical compatibility within the optoisolator category.

Key Parameters

Parameter	Value
Voltage - Isolation	3750Vrms
Number of Channels	1
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 5mA
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	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-A-G are qualified based on the following criteria:

Electrical Equivalence: All substitute parts maintain 3750Vrms isolation voltage, single-channel configuration, 80-160% current transfer ratio at 5mA, 80V maximum output voltage, and 50mA output current per channel.

Thermal Compatibility: All substitutes operate across the -55°C to 110°C temperature range.

Regulatory Compliance: All substitutes are ROHS3 compliant with MSL 1 (Unlimited) rating.

Mechanical Compatibility: Substitutes are available in 4-SOIC package variants (4-SSOP, 4-SO, 4-SOP) with 0.173" width, 4.40mm standard dimensions, all surface mount configurations.

Timing Parameters: Turn-on/turn-off times and rise/fall times remain within acceptable ranges across all qualified substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Isolation	Current Transfer Ratio (Min)	Current Transfer Ratio (Max)	Vce Saturation (Max)	Turn On / Turn Off Time (Typ)	Rise / Fall Time (Typ)	Package / Case	Supplier Device Package	Inventory (Pcs)
LTV-217-A-G	Lite-On Inc.	3750Vrms	80% @ 5mA	160% @ 5mA	400mV	3µs, 3µs	2µs, 3µs	4-SOIC (0.173", 4.40mm Width)	4-SSOP	722400
ACPL-217-50AE	Broadcom Limited	3750Vrms	80% @ 5mA	160% @ 5mA	400mV	3µs, 3µs	2µs, 3µs	4-SOIC (0.173", 4.40mm Width)	4-SO	15456
ACPL-217-56AE	Broadcom Limited	3750Vrms	80% @ 5mA	160% @ 5mA	400mV	3µs, 3µs	2µs, 3µs	4-SOIC (0.173", 4.40mm Width)	4-SO	21400
EL3H7(A)(EA)-G	Everlight Electronics Co Ltd	3750Vrms	80% @ 5mA	160% @ 5mA	200mV	—	5µs, 3µs	4-SOIC (0.173", 4.40mm Width)	4-SSOP	2845
FODM217AR2	onsemi	3750Vrms	80% @ 5mA	160% @ 5mA	400mV	3µs, 3µs	2µs, 3µs	4-SOIC (0.173", 4.40mm Width)	4-SOP	2090
FODM217AR2V	onsemi	3750Vrms	80% @ 5mA	160% @ 5mA	400mV	3µs, 3µs	3µs, 3µs	4-SOIC (0.173", 4.40mm Width)	4-SOP	1292
VOS617A-7T	Vishay Semiconductor Opto Division	3750Vrms	80% @ 5mA	160% @ 5mA	400mV	6µs, 4µs	3µs, 3µs	4-SOIC (0.173", 4.40mm Width)	4-SSOP	1250
VOS617A-7X001T	Vishay Semiconductor Opto Division	3750Vrms	80% @ 5mA	160% @ 5mA	400mV	6µs, 4µs	3µs, 3µs	4-SOIC (0.173", 4.40mm Width)	4-SSOP	21174

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance. Selection between substitutes depends on specific application timing requirements and package preference.

For applications requiring minimum turn-on/turn-off times of 3µs, the LTV-217-A-G, ACPL-217-50AE, ACPL-217-56AE, FODM217AR2, and FODM217AR2V are suitable. The Vishay VOS617A series (VOS617A-7T and VOS617A-7X001T) exhibit extended turn-on times of 6µs and turn-off times of 4µs.

The EL3H7(A)(EA)-G from Everlight provides lower Vce saturation at 200mV compared to the standard 400mV specification, with rise time of 5µs.

Broadcom ACPL-217 series parts are available in higher inventory quantities (15456 and 21400 units respectively). Vishay VOS617A-7X001T offers the highest inventory availability at 21174 units among substitute options.

Frequently Asked Questions (FAQ)

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

A: Both Broadcom parts meet all electrical parameters of the LTV-217-A-G. The primary difference is packaging designation (4-SO versus 4-SSOP), though both use the same 4-SOIC physical form factor with 0.173" width and 4.40mm dimensions. Footprint compatibility should be confirmed for your specific PCB layout.

Q: What is the significance of the Vce saturation difference in EL3H7(A)(EA)-G?

A: The EL3H7(A)(EA)-G specifies 200mV maximum Vce saturation compared to 400mV in the LTV-217-A-G. This lower saturation voltage may provide improved switching performance in applications sensitive to output voltage drop, but does not affect substitution eligibility based on the defined parameters.

Q: Are the Vishay VOS617A parts suitable for timing-critical applications?

A: The VOS617A-7T and VOS617A-7X001T exhibit turn-on times of 6µs and turn-off times of 4µs, compared to 3µs for both parameters in the LTV-217-A-G. Applications requiring the faster 3µs switching times should use the LTV-217-A-G or Broadcom/onsemi alternatives.

Q: What packaging options are available among substitutes?

A: All substitutes use the 4-SOIC physical package (0.173" width, 4.40mm). Supplier device package designations vary (4-SSOP, 4-SO, 4-SOP) but represent equivalent mechanical configurations suitable for standard surface mount assembly.

Q: Do all substitutes meet the same isolation voltage specification?

A: Yes. All listed substitutes maintain 3750Vrms isolation voltage, matching the LTV-217-A-G specification.

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