CS220-10M Equivalent & Substitute Parts

Part Overview

The CS220-10M is a Silicon Controlled Rectifier (SCR) rated for 600V off-state voltage with 10A RMS on-state current capacity, manufactured by Central Semiconductor Corp in a TO-220-3 through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The part operates across a temperature range of -40°C to 125°C and features standard recovery characteristics typical of general-purpose thyristor applications.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	600	V
Current - On State (It (RMS))	10	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)	30	mA
Operating Temperature Range	-40 to 125	°C
Mounting Type	Through Hole	-
Package / Case	TO-220-3	-
SCR Type	Standard Recovery	-

Substitute Part Grouping Explanation

Substitution of the CS220-10M is determined by the following critical electrical and mechanical parameters:

Voltage Rating (Off State): Must equal or exceed 600V to maintain blocking capability
Current Rating (On State RMS): Must support minimum 10A RMS to handle load requirements
Gate Trigger Characteristics: Vgt and Igt must remain within specified maximums (1.5V and 15mA respectively) for circuit compatibility
On-State Voltage Drop: Vtm maximum of 1.6V ensures thermal performance consistency
Hold Current: 30mA maximum maintains reliable latching behavior
Package and Mounting: TO-220-3 through-hole configuration is mandatory for mechanical and thermal interface compatibility
SCR Type: Standard Recovery classification ensures switching performance alignment

The TXN612RG from STMicroelectronics meets all substitution criteria while offering enhanced current capacity and active product status.

Parameter Comparison

Parameter	CS220-10M (Central Semiconductor)	TXN612RG (STMicroelectronics)	Compatibility
Voltage - Off State	600 V	600 V	Match
Current - On State (It (RMS))	10 A	12 A	Substitute Exceeds
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	1.5 V	Match
Current - Gate Trigger (Igt) (Max)	15 mA	15 mA	Match
Voltage - On State (Vtm) (Max)	1.6 V	1.6 V	Match
Current - Hold (Ih) (Max)	30 mA	30 mA	Match
Operating Temperature Range	-40 to 125 °C	-40 to 125 °C	Match
Package / Case	TO-220-3	TO-220-3	Match
SCR Type	Standard Recovery	Standard Recovery	Match
Product Status	Obsolete	Active	Substitute Active

Engineering Selection Recommendations

The TXN612RG is a direct functional substitute for the CS220-10M. Key selection factors:

Product Status: The TXN612RG maintains active product status with established supply chain availability, whereas the CS220-10M is obsolete
Electrical Equivalence: All critical electrical parameters match or exceed the original specification, with on-state current capacity increased from 10A to 12A RMS
Compliance: The TXN612RG is ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements
Thermal Performance: Identical on-state voltage drop (1.6V maximum) ensures equivalent thermal behavior in existing circuit designs
Package Compatibility: Both devices use TO-220-3 through-hole packaging, enabling direct mechanical substitution without PCB redesign

Selection of the TXN612RG eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with existing CS220-10M applications.

Frequently Asked Questions (FAQ)

Q: Can the TXN612RG directly replace the CS220-10M without circuit modifications?

A: Yes. The TXN612RG meets all electrical parameter requirements of the CS220-10M, including voltage ratings, gate trigger characteristics, and on-state voltage drop. The TO-220-3 package is identical, enabling direct substitution.

Q: Why does the TXN612RG have a higher current rating (12A vs 10A)?

A: The increased current capacity of the TXN612RG (12A RMS) exceeds the original 10A requirement, providing design margin without affecting circuit operation. This enhancement does not compromise compatibility.

Q: Are there any thermal considerations when substituting the TXN612RG?

A: Both devices maintain identical on-state voltage drop (1.6V maximum) and operating temperature range (-40°C to 125°C). Thermal performance in existing designs remains equivalent.

Q: What is the significance of the TO-220-3 package specification?

A: The TO-220-3 package defines the physical form factor and thermal interface. Both the CS220-10M and TXN612RG use this package, ensuring mechanical compatibility with existing PCB layouts and heat sink mounting arrangements.

Q: Does the TXN612RG meet current regulatory compliance standards?

A: Yes. The TXN612RG is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the difference between It (RMS) and It (AV) current ratings?

A: It (RMS) represents the root-mean-square on-state current, while It (AV) represents average on-state current. The TXN612RG specifies both values (8A average, 12A RMS), with the RMS rating being the primary specification for comparison with the CS220-10M.

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