16TTS08 Equivalent & Substitute Parts

Part Overview

The 16TTS08 is an SCR (Silicon Controlled Rectifier) thyristor manufactured by Vishay General Semiconductor - Diodes Division, rated for 800V off-state voltage and 16A RMS on-state current in a TO-220-3 through-hole package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 125°C and is designed for standard recovery applications requiring high voltage switching capability.

Substiute Parts

16TTS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1328316TTS08 Datasheet

Current PartRFQ

CS19-08HO1

IXYSIn Stock: 1670CS19-08HO1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 16TTS08 is determined by the following critical parameters:

• Off-state voltage rating: Must equal or exceed 800V to maintain blocking capability
• On-state current rating (RMS): Must meet or exceed 16A RMS to handle design load requirements
• Package type: Must be TO-220-3 through-hole for mechanical and thermal compatibility
• SCR recovery type: Must be standard recovery to match switching characteristics
• Operating temperature range: Must encompass -40°C to 125°C
• Gate trigger parameters: Vgt and Igt must be within acceptable design margins

The CS19-08HO1 from IXYS meets these substitution criteria with equivalent voltage rating, superior current handling (29A RMS), identical package, matching recovery type, and compatible temperature range.

Parameter Comparison

Engineering Selection Recommendations

The CS19-08HO1 is the qualified substitute for the 16TTS08 based on the following factors:

Electrical compatibility: Both devices share identical 800V off-state voltage rating and standard recovery characteristics. The CS19-08HO1 provides higher on-state current capacity (29A RMS versus 16A RMS), ensuring adequate margin for the original design load.

Package and thermal compatibility: Both use TO-220-3 through-hole packaging, enabling direct mechanical and thermal interface compatibility without PCB redesign.

Product status and compliance: The CS19-08HO1 is active in production with ROHS3 compliance, whereas the 16TTS08 is obsolete and RoHS non-compliant. This substitution improves long-term supply security and regulatory alignment.

Gate trigger characteristics: The CS19-08HO1 exhibits lower gate trigger voltage (1.5V versus 2V) and lower gate trigger current (28mA versus 60mA), reducing gate drive circuit stress while maintaining reliable triggering.

Frequently Asked Questions (FAQ)

Q: Can the CS19-08HO1 directly replace the 16TTS08 without circuit modification?

A: Yes. Both devices share identical off-state voltage (800V), package (TO-220-3), and operating temperature range (-40°C to 125°C). The CS19-08HO1 provides higher on-state current capacity, which is a performance enhancement rather than a limitation. Gate drive circuits may benefit from the lower trigger requirements but will function with existing designs.

Q: What is the significance of the higher on-state current rating in the CS19-08HO1?

A: The CS19-08HO1 is rated for 29A RMS on-state current compared to the 16TTS08's 16A RMS. This provides design margin and thermal headroom for the same load, potentially improving reliability and reducing junction temperature during operation.

Q: Are there package considerations for this substitution?

A: Both parts use TO-220-3 through-hole packaging. No PCB layout changes are required. Thermal management remains equivalent due to identical package geometry and mounting interface.

Q: Why is product status relevant to this substitution?

A: The 16TTS08 is obsolete, creating supply risk and potential discontinuation of manufacturing. The CS19-08HO1 is active in production, ensuring long-term availability and supply chain stability. Additionally, the CS19-08HO1 meets ROHS3 compliance, whereas the 16TTS08 does not, supporting regulatory requirements in many markets.

Q: How do the gate trigger parameters affect circuit design?

A: The CS19-08HO1 requires lower gate trigger voltage (1.5V versus 2V) and lower gate trigger current (28mA versus 60mA). Existing gate drive circuits designed for the 16TTS08 will operate reliably with the CS19-08HO1, but may be optimized for reduced power consumption and faster switching response.