VO3052 Optoisolator Triac Output Equivalent & Substitute Parts

Part Overview

The VO3052 is an optoisolator with triac output manufactured by Vishay Semiconductor Opto Division. This component provides galvanic isolation up to 5300Vrms with a single triac output channel in a 6-DIP through-hole package. The product is active and in stock with 39400 units available. Substitute parts are necessary when VO3052 availability is limited, when alternative sourcing is required, or when design flexibility permits selection from qualified equivalent components within the same functional category.

Substiute Parts

VO3052

Vishay Semiconductor Opto DivisionIn Stock: 39502VO3052 Datasheet

Current PartRFQ

FOD420

onsemiIn Stock: 6010FOD420 Datasheet

MFR RecommendedRFQ

FOD4216

onsemiIn Stock: 4738FOD4216 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VO3052 are qualified based on the following criteria:

Functional Equivalence Requirements:

• Output type must be triac
• Single channel configuration
• 6-DIP through-hole package (0.300", 7.62mm)
• Operating temperature range: -55°C ~ 100°C
• Voltage - Off State: 600 V
• RoHS3 compliance

Electrical Compatibility Parameters:

• Isolation voltage: minimum 5000Vrms (VO3052 specifies 5300Vrms)
• Static dV/dt rating: minimum 1.5kV/µs
• Current - LED Trigger (Ift): maximum 10mA
• Current - Hold (Ih): maximum 500µA
• Voltage - Forward (Vf): approximately 1.2V to 1.28V
• Current - DC Forward (If): maximum 60mA

The substitute parts FOD420 and FOD4216 meet these criteria with isolation voltage of 5000Vrms, compatible dV/dt ratings, and matching package specifications.

Parameter Comparison

Engineering Selection Recommendations

Both FOD420 and FOD4216 are active products with ROHS3 compliance and international safety certifications. FOD420 is packaged in tube format with 5976 units in stock, while FOD4216 is supplied in bulk packaging with 4711 units available. Both substitute parts maintain the required 6-DIP through-hole package and operating temperature range of -55°C to 100°C.

The onsemi FOD420 and FOD4216 optoisolators provide isolation voltage of 5000Vrms, which is lower than the VO3052 specification of 5300Vrms. However, both substitute parts exceed the minimum isolation requirement for triac output optoisolators in this category and maintain compatibility with the 600V off-state voltage specification. The static dV/dt rating of 10kV/µs on both substitute parts exceeds the VO3052 minimum of 1.5kV/µs, providing enhanced transient immunity.

Both FOD420 and FOD4216 hold active product status with established safety certifications (cUL, FIMKO, UL), supporting long-term design reliability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can FOD420 or FOD4216 be used as direct replacements for VO3052 in existing designs?

A: Both FOD420 and FOD4216 are functionally equivalent triac output optoisolators in the same 6-DIP package. The primary electrical difference is the isolation voltage specification: FOD420 and FOD4216 specify 5000Vrms compared to VO3052 at 5300Vrms. Both substitute parts are suitable for applications where 5000Vrms isolation meets the design requirement. The 6-DIP through-hole package and pin configuration are identical, enabling direct board-level substitution.

Q: What is the difference between FOD420 and FOD4216?

A: FOD420 and FOD4216 are both onsemi triac output optoisolators with identical electrical specifications and package format. The primary difference is packaging: FOD420 is supplied in tube format, while FOD4216 is supplied in bulk. Both parts have the same isolation voltage (5000Vrms), dV/dt rating (10kV/µs), and operating temperature range (-55°C to 100°C). Selection between these two should be based on packaging requirements and inventory availability.

Q: Are there any compliance or certification differences between VO3052 and the substitute parts?

A: VO3052 holds cUR and UR approvals. FOD420 and FOD4216 hold cUL, FIMKO, and UL approvals. All three parts are ROHS3 compliant and REACH unaffected. The substitute parts carry broader international safety certifications, which may provide additional design flexibility in certain markets or applications.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: triac output type, single channel configuration, 6-DIP package format, 600V off-state voltage, operating temperature range of -55°C to 100°C, and isolation voltage of at least 5000Vrms. The VO3052, FOD420, and FOD4216 all meet these criteria. Additional parameters such as static dV/dt, LED trigger current, and hold current should be evaluated against specific circuit requirements.

Q: Can I use FOD420 or FOD4216 in high-speed switching applications?

A: Both FOD420 and FOD4216 specify a turn-on time of 60µs and a static dV/dt rating of 10kV/µs. These parameters define the switching speed capability of the triac output. Applications requiring faster switching response should evaluate the turn-on time specification against circuit timing requirements.