MOC3052S-TA1 Equivalent & Substitute Parts

Part Overview

The MOC3052S-TA1 is an optoisolator with triac output manufactured by Lite-On Inc., designed for applications requiring galvanic isolation with triac switching capability. This component operates at 5000Vrms isolation voltage and is housed in a 6-SMD surface mount package. The part is currently active in production with 326,300 units in stock. Substitute parts may be required due to supply constraints, regional availability, packaging preferences, or specific application requirements within the MOC305x series.

Key Parameters

Parameter	MOC3052S-TA1
Manufacturer	Lite-On Inc.
Category	Optoisolators
Output Type	Triac
Voltage - Isolation	5000Vrms
Voltage - Off State	600 V
Number of Channels	1
Static dV/dt (Min)	1kV/µs
Current - LED Trigger (Ift) (Max)	10mA
Current - Hold (Ih)	400µA (Typ)
Voltage - Forward (Vf) (Typ)	1.2V
Current - DC Forward (If) (Max)	50 mA
Operating Temperature	-40°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	6-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the MOC3052S-TA1 is determined by the following critical parameters:

Output Type: Triac (all substitutes must maintain triac output configuration)
Number of Channels: 1 (single channel requirement)
Mounting Type: Surface Mount (6-SMD, Gull Wing package)
Base Product Number: MOC305 series (ensures functional compatibility within the optoisolator family)
Voltage - Isolation: Minimum 4170Vrms (substitutes must meet or exceed isolation requirements for the application)
Voltage - Off State: 600 V (standard across the series)
Static dV/dt: 1kV/µs (consistent switching performance)

The identified substitute parts MOC3051SR2VM, MOC3052SR2VM, and MOC3052SVM share these core characteristics, enabling direct functional replacement in circuit designs. Variations in LED trigger current, hold current, forward voltage, and operating temperature ranges reflect manufacturer-specific design implementations within acceptable tolerance bands for triac optoisolator applications.

Parameter Comparison

Parameter	MOC3052S-TA1	MOC3051SR2VM	MOC3052SR2VM	MOC3052SVM
Manufacturer	Lite-On Inc.	onsemi	Fairchild Semiconductor	onsemi
Output Type	Triac	Triac	Triac	Triac
Voltage - Isolation	5000Vrms	4170Vrms	Not specified	4170Vrms
Voltage - Off State	600 V	600 V	Not specified	600 V
Number of Channels	1	1	Not specified	1
Static dV/dt (Min)	1kV/µs	1kV/µs	Not specified	1kV/µs
Current - LED Trigger (Ift) (Max)	10mA	15mA	Not specified	10mA
Current - Hold (Ih)	400µA (Typ)	220µA (Typ)	Not specified	220µA (Typ)
Voltage - Forward (Vf) (Typ)	1.2V	1.18V	Not specified	1.18V
Current - DC Forward (If) (Max)	50 mA	60 mA	Not specified	60 mA
Operating Temperature	-40°C ~ 100°C	-40°C ~ 85°C	Not specified	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant
Product Status	Active	Active	Active	Active
Packaging	-	Tape & Reel (TR)	-	Tube

Engineering Selection Recommendations

All identified substitute parts maintain active product status and comply with ROHS3 environmental standards. Selection between MOC3051SR2VM, MOC3052SR2VM, and MOC3052SVM should be based on the following factors:

MOC3051SR2VM and MOC3052SVM are manufactured by onsemi and carry UR and VDE certifications. Both feature ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), indicating superior moisture resistance compared to the original part's MSL 3 rating. MOC3051SR2VM is supplied in Tape & Reel packaging, while MOC3052SVM is supplied in Tube packaging.

MOC3052SR2VM is manufactured by Fairchild Semiconductor. Complete electrical parameter specifications are not provided in the available data.

The MOC3052S-TA1 operates across a wider temperature range (-40°C to 100°C) compared to onsemi alternatives (-40°C to 85°C). Applications requiring operation above 85°C must retain the original MOC3052S-TA1 or confirm alternative part suitability through detailed specification review.

Frequently Asked Questions (FAQ)

Q: Can MOC3051SR2VM replace MOC3052S-TA1 in all applications?

A: MOC3051SR2VM shares the same triac output configuration, single-channel design, 6-SMD package, and core electrical characteristics. The primary difference is isolation voltage rating (4170Vrms versus 5000Vrms). Substitution is valid only when the application isolation requirement does not exceed 4170Vrms.

Q: What is the difference between MOC3052SVM and MOC3051SR2VM?

A: Both are onsemi products with identical isolation voltage (4170Vrms), hold current (220µA typical), and forward voltage (1.18V typical). MOC3052SVM has a maximum LED trigger current of 10mA, matching the original part, while MOC3051SR2VM specifies 15mA maximum. Packaging differs: MOC3052SVM is supplied in Tube format, MOC3051SR2VM in Tape & Reel format.

Q: Does packaging affect electrical performance?

A: Packaging format (Tape & Reel, Tube, or unspecified) does not affect electrical performance. Selection should be based on assembly process requirements and inventory management practices.

Q: What does Moisture Sensitivity Level (MSL) indicate?

A: MSL rating specifies the maximum time a component can be exposed to moisture before soldering. MOC3051SR2VM and MOC3052SVM carry MSL 1 (Unlimited), indicating superior moisture resistance. MOC3052S-TA1 carries MSL 3 (168 Hours), requiring more stringent handling protocols.

Q: Are all substitute parts ROHS3 compliant?

A: MOC3051SR2VM and MOC3052SVM are confirmed ROHS3 compliant. MOC3052SR2VM compliance status is not specified in available data.

Q: What certifications do the substitute parts carry?

A: MOC3051SR2VM and MOC3052SVM carry UR and VDE certifications. MOC3052SR2VM certification information is not provided. The original MOC3052S-TA1 carries CSA, FIMKO, and UL certifications.

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