VOD206T Equivalent & Substitute Parts

Part Overview

The VOD206T is a 2-channel optoisolator with transistor output manufactured by Vishay Semiconductor Opto Division. This component provides 4000Vrms isolation voltage and is designed for applications requiring galvanic isolation in signal transmission. The part is currently active in production with 2410 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this optoisolator category.

Substiute Parts

VOD206T

Vishay Semiconductor Opto DivisionIn Stock: 2443VOD206T Datasheet

Current PartRFQ

ACPL-227-500E

Broadcom LimitedIn Stock: 15381ACPL-227-500E Datasheet

MFR RecommendedRFQ

ACPL-227-50BE

Broadcom LimitedIn Stock: 400510ACPL-227-50BE Datasheet

MFR RecommendedRFQ

ACPL-227-50CE

Broadcom LimitedIn Stock: 4487ACPL-227-50CE Datasheet

MFR RecommendedRFQ

ACPL-227-560E

Broadcom LimitedIn Stock: 10395ACPL-227-560E Datasheet

MFR RecommendedRFQ

ACPL-227-56BE

Broadcom LimitedIn Stock: 3063ACPL-227-56BE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VOD206T are qualified based on the following criteria:

Electrical Compatibility Parameters:

• Number of channels: 2 (required match)
• Output type: Transistor (required match)
• Current - Output / Channel: 50mA (required match)
• Vce Saturation (Max): 400mV (required match)
• Voltage - Forward (Vf) (Typ): 1.2V (required match)
• Input Type: DC (required match)

Mechanical Compatibility Parameters:

• Mounting Type: Surface Mount (required match)
• Package / Case: 8-SOIC or 8-SO (compatible form factors)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (required match)
• Moisture Sensitivity Level (MSL): 1 (required match)

The substitute parts identified (ACPL-227 series from Broadcom Limited) maintain electrical equivalence in output stage characteristics while operating at a lower isolation voltage (3000Vrms versus 4000Vrms). This represents a relaxation of the isolation requirement, making these parts suitable for applications where the full 4000Vrms isolation of the VOD206T is not required.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and ROHS3 compliance. The ACPL-227 series from Broadcom Limited provides equivalent transistor output stage performance with identical output current, saturation voltage, and forward voltage characteristics.

The primary electrical difference is the isolation voltage rating: substitute parts operate at 3000Vrms compared to the VOD206T's 4000Vrms. Selection between the main part and substitutes depends on the isolation voltage requirement of the application. Applications requiring 4000Vrms isolation must use the VOD206T. Applications with 3000Vrms isolation requirements can utilize any of the ACPL-227 variants.

Among the ACPL-227 options, variants differ in current transfer ratio specifications at 5mA input current. ACPL-227-50BE and ACPL-227-56BE offer higher minimum current transfer ratios (130% minimum) compared to ACPL-227-500E and ACPL-227-560E (50% minimum). ACPL-227-50CE provides intermediate performance (200% minimum). Selection among these variants should be based on the specific current transfer ratio requirements of the application circuit.

Package dimensions differ slightly between the VOD206T (0.154" width) and ACPL-227 series (0.173" width), requiring PCB layout verification for space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can ACPL-227 series parts directly replace VOD206T in all applications?

A: Direct replacement is possible only in applications where 3000Vrms isolation voltage is sufficient. The VOD206T provides 4000Vrms isolation; if the application requires this higher isolation rating, the VOD206T must be used. Electrical output characteristics are equivalent.

Q: What is the difference between ACPL-227-50BE and ACPL-227-560E?

A: Both parts operate at 3000Vrms isolation with identical output stage specifications. The primary difference is current transfer ratio: ACPL-227-50BE specifies 130-260% at 5mA input, while ACPL-227-560E specifies 50-600% at 5mA input. Selection depends on the application's current transfer ratio tolerance requirements.

Q: Are there package compatibility concerns when substituting?

A: The VOD206T uses an 8-SOIC package with 0.154" width, while ACPL-227 variants use 8-SOIC packages with 0.173" width. Both are surface mount 8-pin SOIC form factors with compatible pinouts, but the slightly wider package of the ACPL-227 series requires PCB layout verification in space-constrained designs.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All identified ACPL-227 variants are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the VOD206T compliance profile.

Q: What is the operating temperature range difference?

A: The VOD206T operates from -40°C to 100°C. All ACPL-227 substitute parts operate from -55°C to 110°C, providing an extended temperature range suitable for wider environmental applications.