CS19-12HO1 Equivalent & Substitute Parts

Part Overview

The CS19-12HO1 is an SCR (Silicon Controlled Rectifier) rated at 1.2 kV and 29 A RMS current, manufactured by IXYS in a TO-220-3 through-hole package. This thyristor is designed for standard recovery applications requiring high voltage blocking and moderate current handling in industrial and power conversion circuits. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges.

Substiute Parts

CS19-12HO1

IXYSIn Stock: 3134CS19-12HO1 Datasheet

Current PartRFQ

TYN1225RG

STMicroelectronicsIn Stock: 17621TYN1225RG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS19-12HO1 is determined by the following critical parameters:

• Voltage Rating (Off State): Must equal 1.2 kV to maintain blocking capability
• Current Rating (It RMS): Must be ≥ 29 A to support the same load requirements
• Gate Trigger Parameters: Vgt and Igt must remain within compatible ranges to ensure reliable gate drive circuits
• On-State Voltage (Vtm): Must not exceed 1.6 V to maintain thermal performance
• Package Type: Must be TO-220-3 through-hole for mechanical and thermal compatibility
• SCR Type: Must be Standard Recovery to match switching characteristics
• Compliance: RoHS3 compliance and MSL rating must be maintained

The TYN1225RG from STMicroelectronics meets these substitution criteria with equivalent voltage and temperature ratings, compatible gate trigger specifications, and identical packaging.

Parameter Comparison

Engineering Selection Recommendations

Both the CS19-12HO1 and TYN1225RG are active production parts with full RoHS3 compliance and REACH unaffected status. Selection between these parts depends on application-specific current requirements:

• CS19-12HO1: Select when application requires the full 29 A RMS current rating or when IXYS supply chain preference is established.
• TYN1225RG: Select when application current does not exceed 25 A RMS. This part offers superior off-state leakage characteristics (5 µA vs. 5 mA) and higher non-repetitive surge current rating (250 A / 260 A vs. 160 A / 180 A), providing enhanced reliability margins in high-stress switching applications.

Gate drive circuit design must accommodate the TYN1225RG's higher gate trigger current requirement (40 mA maximum vs. 28 mA).

Frequently Asked Questions (FAQ)

Q: Can TYN1225RG replace CS19-12HO1 in all applications?

A: Substitution is valid only when application average on-state current does not exceed 25 A RMS. If the circuit requires sustained current above 25 A, the CS19-12HO1 must be used. Both parts share identical voltage ratings, temperature ranges, and package specifications.

Q: What is the impact of different gate trigger current specifications?

A: The TYN1225RG requires 40 mA maximum gate trigger current compared to 28 mA for the CS19-12HO1. Gate drive circuits must supply sufficient current to reliably trigger the TYN1225RG. Existing gate drive designs rated for 28 mA may require verification or modification.

Q: Are there thermal or mounting differences between these parts?

A: Both parts use identical TO-220-3 through-hole packaging with the same thermal characteristics and mounting footprint. No PCB layout or heatsink modifications are required for substitution.

Q: What does the lower off-state leakage current of TYN1225RG indicate?

A: The TYN1225RG exhibits 5 µA off-state leakage versus 5 mA for the CS19-12HO1. This superior leakage performance reduces standby power consumption and improves circuit efficiency in applications with extended blocking periods.

Q: Are both parts suitable for industrial temperature ranges?

A: Yes. Both parts operate across -40°C to 125°C, meeting industrial and harsh environment requirements. Operating temperature capability is identical between the two devices.