CS220-12M Equivalent & Substitute Parts

Part Overview

The CS220-12M is a Silicon Controlled Rectifier (SCR) rated for 600V off-state voltage with 12A RMS on-state current capacity, housed in a TO-220-3 through-hole package. Manufactured by Central Semiconductor Corp, this component is classified as obsolete. Due to its obsolete status and limited availability from the original manufacturer, identifying qualified substitute parts is essential for design continuity and procurement reliability.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	600	V
Current - On State (It (RMS)) (Max)	12	A
Voltage - Gate Trigger (Vgt) (Max)	1.5	V
Current - Gate Trigger (Igt) (Max)	15	mA
Voltage - On State (Vtm) (Max)	1.6	V
Current - Hold (Ih) (Max)	20	mA
SCR Type	Standard Recovery	-
Operating Temperature Range	-40 to 125	°C
Package / Case	TO-220-3	-
Mounting Type	Through Hole	-

Substitute Part Grouping Explanation

Substitution of the CS220-12M is determined by strict equivalence across the following critical parameters:

Voltage rating: 600V off-state voltage
Current capacity: 12A RMS on-state current
Gate trigger characteristics: Vgt ≤ 1.5V, Igt ≤ 15mA
On-state voltage: Vtm ≤ 1.6V
Hold current: Ih ≤ 30mA (relaxed tolerance acceptable)
SCR recovery type: Standard Recovery
Package: TO-220-3 through-hole configuration
Temperature range: -40°C to 125°C minimum

The TXN612RG from STMicroelectronics meets all substitution criteria. This part maintains identical voltage and current ratings, gate trigger specifications, and thermal operating range. The TO-220-3 package ensures mechanical and electrical compatibility with existing PCB layouts and thermal management designs.

Parameter Comparison

Parameter	CS220-12M (Original)	TXN612RG (Substitute)	Match Status
Manufacturer	Central Semiconductor Corp	STMicroelectronics	Different
Voltage - Off State	600 V	600 V	Equivalent
Current - On State (It (RMS)) (Max)	12 A	12 A	Equivalent
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	1.5 V	Equivalent
Current - Gate Trigger (Igt) (Max)	15 mA	15 mA	Equivalent
Voltage - On State (Vtm) (Max)	1.6 V	1.6 V	Equivalent
Current - Hold (Ih) (Max)	20 mA	30 mA	Compatible
SCR Type	Standard Recovery	Standard Recovery	Equivalent
Operating Temperature	-40 to 125 °C	-40 to 125 °C	Equivalent
Package / Case	TO-220-3	TO-220-3	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Product Status	Obsolete	Active	Improved
RoHS Status	Not specified	ROHS3 Compliant	Improved

Engineering Selection Recommendations

The TXN612RG is a direct functional equivalent to the CS220-12M. All critical electrical parameters match or exceed the original specification. The substitute part offers the additional advantage of active product status, ensuring long-term availability and supply chain stability. The TXN612RG carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements. Current inventory of 1897 units provides adequate supply for production requirements.

Frequently Asked Questions (FAQ)

Q: Can the TXN612RG replace the CS220-12M in existing designs without modification?

A: Yes. The TXN612RG maintains electrical equivalence across all critical parameters: 600V off-state voltage, 12A RMS on-state current, identical gate trigger specifications, and TO-220-3 package configuration. No circuit modifications are required.

Q: What is the significance of the hold current difference (20mA vs. 30mA)?

A: The TXN612RG hold current specification of 30mA is higher than the CS220-12M specification of 20mA. This represents a relaxed tolerance that does not impact circuit functionality. The part will maintain conduction at lower gate currents, which is operationally compatible with the original design.

Q: Are there thermal management differences between these parts?

A: Both parts operate across the identical temperature range of -40°C to 125°C and use the same TO-220-3 package. Thermal management considerations remain unchanged.

Q: Why is product status relevant to substitution?

A: The CS220-12M is obsolete, indicating discontinued manufacturing and declining inventory availability. The TXN612RG is active, ensuring continued production, stable pricing, and reliable long-term supply for ongoing production and field service requirements.

Q: Does the ROHS3 compliance of the TXN612RG affect compatibility?

A: No. ROHS3 compliance indicates adherence to environmental and hazardous substance restrictions. This certification does not alter electrical or mechanical compatibility and represents an improvement over the original part.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message