LTV-852 Equivalent & Substitute Parts

Part Overview

The LTV-852 is an optoisolator with Darlington output manufactured by LITEON, designed for high-voltage isolation applications. This component provides 5000Vrms isolation with a single channel configuration in a 4-DIP package. The part is currently active in production with 98,977 units in stock. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and component availability across multiple manufacturers.

Key Parameters

Parameter	Value
Voltage - Isolation	5000Vrms
Number of Channels	1
Output Type	Darlington
Current Transfer Ratio (Min)	1000% @ 1mA
Current Transfer Ratio (Max)	15000% @ 1mA
Voltage - Output (Max)	300V
Current - Output / Channel	150mA
Vce Saturation (Max)	1.2V
Operating Temperature	-30°C ~ 100°C
Package / Case	4-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Input Type	DC
Rise / Fall Time (Typ)	100µs, 20µs
Voltage - Forward (Vf) (Typ)	1.2V
Current - DC Forward (If) (Max)	50 mA

Substitute Part Grouping Explanation

Substitute parts for the LTV-852 are qualified based on matching the following critical parameters:

Voltage - Isolation: 5000Vrms minimum (5300Vrms acceptable for higher margin applications)
Number of Channels: 1
Output Type: Darlington
Current Transfer Ratio: 1000% @ 1mA minimum, 15000% @ 1mA maximum
Voltage - Output (Max): 300V
Current - Output / Channel: 150mA
Package / Case: 4-DIP (0.300", 7.62mm)
Mounting Type: Through Hole
Operating Temperature: -30°C ~ 100°C
Input Type: DC

All identified substitutes meet these electrical and mechanical requirements and are available from active production lines.

Parameter Comparison

Parameter	LTV-852 (LITEON)	FOD852 (onsemi)	FOD852300 (onsemi)	IS627 (Isocom)	IS852X (Isocom)
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5300Vrms	5300Vrms
Number of Channels	1	1	1	1	1
Output Type	Darlington	Darlington	Darlington	Darlington	Darlington
Current Transfer Ratio (Min)	1000% @ 1mA	1000% @ 1mA	1000% @ 1mA	1000% @ 1mA	1000% @ 1mA
Current Transfer Ratio (Max)	15000% @ 1mA	15000% @ 1mA	15000% @ 1mA	15000% @ 1mA	15000% @ 1mA
Voltage - Output (Max)	300V	300V	300V	300V	300V
Current - Output / Channel	150mA	150mA	150mA	150mA	150mA
Vce Saturation (Max)	1.2V	1.2V	1.2V	1.2V	1.2V
Operating Temperature	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 100°C
Package / Case	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Input Type	DC	DC	DC	DC	DC
Rise / Fall Time (Typ)	100µs, 20µs	100µs, 20µs	100µs, 20µs	100µs, 20µs	100µs, 20µs
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	1.2V	1.2V	1.2V
Current - DC Forward (If) (Max)	50 mA	50 mA	50 mA	50 mA	50 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed are active production components with ROHS3 compliance. FOD852 and FOD852300 from onsemi are direct parametric equivalents with identical isolation voltage specifications. IS627 and IS852X from Isocom Components provide 5300Vrms isolation, exceeding the LTV-852 specification by 300Vrms while maintaining all other electrical parameters within specification.

Selection between substitutes should be based on:

Manufacturer preference and supply chain relationships
Packaging format (all listed substitutes use Tube packaging except LTV-852 which does not specify packaging type)
Inventory availability and lead time requirements
Compliance certifications required for the application (all parts are ROHS3 compliant and REACH unaffected where applicable)

Frequently Asked Questions (FAQ)

Q: Can FOD852 and FOD852300 be used interchangeably with LTV-852?

A: Yes. Both FOD852 and FOD852300 from onsemi are parametric equivalents with identical electrical specifications including 5000Vrms isolation voltage, 1000-15000% current transfer ratio, 300V maximum output voltage, and 150mA output current per channel. Both use the same 4-DIP package and through-hole mounting configuration.

Q: What is the difference between IS627 and IS852X?

A: IS627 and IS852X are both from Isocom Components and share identical electrical parameters. The primary distinction is the series designation (IS627 versus IS852). Both provide 5300Vrms isolation, which exceeds the LTV-852 specification. All other parameters including current transfer ratio, output voltage, output current, and package configuration are identical.

Q: Are the Isocom parts (IS627, IS852X) compatible with LTV-852?

A: Yes. IS627 and IS852X meet all electrical requirements for LTV-852 substitution. The 5300Vrms isolation rating provides additional margin above the 5000Vrms specification. All other parameters including channel count, output type, current transfer ratio, output voltage, output current, operating temperature range, and package configuration are identical.

Q: Do all substitute parts use the same 4-DIP package?

A: Yes. All substitute parts use the 4-DIP (0.300", 7.62mm) package with through-hole mounting, ensuring direct mechanical compatibility with LTV-852 in PCB designs.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. IS627 and IS852X are also REACH unaffected.

Q: What is the inventory status of substitute parts?

A: FOD852 has 17,287 units in stock, FOD852300 has 12,700 units in stock, IS627 has 984 units in stock, and IS852X has 1,167 units in stock. All parts are available as new original components.

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