TIC106D-S Equivalent & Substitute Parts

Part Overview

The TIC106D-S is a sensitive gate SCR (Silicon Controlled Rectifier) rated for 400V off-state voltage and 5A RMS on-state current, manufactured by Bourns Inc. in a through-hole TO-220-3 package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations where legacy specifications must be maintained.

Substiute Parts

TIC106D-S

Bourns Inc.In Stock: 820TIC106D-S Datasheet

Current PartRFQ

TN22-1500T

STMicroelectronicsIn Stock: 2112TN22-1500T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIC106D-S is determined by the following critical parameters:

• Off-state voltage rating: Must be 400V or higher to maintain blocking capability
• On-state current rating (RMS): Must support minimum 5A RMS continuous current
• Gate trigger characteristics: Sensitive gate operation (Vgt ≤ 1V, Igt ≤ 200µA) defines the control interface
• On-state voltage drop: Must not exceed 1.7V maximum to preserve thermal and efficiency margins
• Package compatibility: TO-220-3 through-hole mounting required for mechanical fit
• Operating temperature range: Must span -40°C to 110°C minimum
• Compliance: ROHS3 compliance required for regulatory alignment

The TN22-1500T from STMicroelectronics shares the same 400V off-state voltage rating and TO-220-3 package. However, this part operates as a standard recovery SCR with different gate trigger characteristics and reduced on-state current capability (2A RMS vs. 5A RMS), making it suitable only for applications with lower current demands.

Parameter Comparison

Engineering Selection Recommendations

TIC106D-S (Primary - Obsolete Status)

The TIC106D-S remains the specified component for applications requiring sensitive gate operation with 5A RMS current capacity. ROHS3 compliance and established thermal characteristics support legacy system maintenance. Obsolete status necessitates inventory planning and alternative sourcing strategies.

TN22-1500T (Conditional Substitute)

The TN22-1500T is electrically compatible only for applications where on-state current requirements do not exceed 2A RMS. The higher gate trigger voltage (3V vs. 1V) and increased gate trigger current (1.5mA vs. 200µA) require gate drive circuit redesign. The elevated on-state voltage drop (3.1V vs. 1.7V) increases power dissipation. ROHS3 compliance and identical operating temperature range support regulatory continuity. This substitute is suitable only when current and gate drive requirements can be accommodated within system design margins.

Frequently Asked Questions (FAQ)

Q: Can TN22-1500T directly replace TIC106D-S in existing circuits?

A: Direct replacement is not possible without circuit modification. The TN22-1500T requires higher gate trigger voltage and current, necessitating gate drive circuit redesign. The reduced on-state current rating (2A vs. 5A) limits applicability to lower-current designs.

Q: What is the primary difference between sensitive gate and standard recovery SCR types?

A: Sensitive gate SCRs (TIC106D-S) require lower gate trigger voltage and current for activation, enabling simpler gate drive circuits. Standard recovery SCRs (TN22-1500T) require higher gate trigger levels but offer different recovery characteristics. Selection depends on gate drive capability and application timing requirements.

Q: Are both parts ROHS3 compliant?

A: Yes. Both TIC106D-S and TN22-1500T meet ROHS3 compliance requirements, supporting regulatory alignment in new designs and legacy system updates.

Q: What thermal considerations apply when substituting these parts?

A: The TN22-1500T exhibits higher on-state voltage drop (3.1V vs. 1.7V), resulting in increased power dissipation. Thermal management design must account for this difference. Both parts operate across -40°C to 110°C, but heat sink requirements may differ based on application current levels.

Q: Is the TO-220-3 package identical between both parts?

A: Both parts use TO-220-3 through-hole packages with identical pin configurations, ensuring mechanical compatibility. Thermal interface and mounting procedures remain consistent.