CS223-2M TR Equivalent & Substitute Parts

Part Overview

The CS223-2M TR is a 600V, 2A standard recovery SCR (silicon-controlled rectifier) in SOT-223 surface mount packaging manufactured by Central Semiconductor Corp. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications. The CS223-2M TR serves in thyristor switching and power control circuits where 600V blocking capability and 2A on-state current are specified design parameters.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	600	V
Voltage - Gate Trigger (Vgt) (Max)	800	mV
Current - Gate Trigger (Igt) (Max)	200	µA
Voltage - On State (Vtm) (Max)	1.7	V
Current - On State (It (RMS)) (Max)	2	A
Current - Hold (Ih) (Max)	2	mA
Current - Off State (Max)	10	µA
Current - Non Rep. Surge 50, 60Hz (Itsm)	10	A @ 50Hz
Operating Temperature Range	-50 to 125	°C (TJ)
Package / Case	TO-261-4, TO-261AA	SOT-223
Mounting Type	Surface Mount
SCR Type	Standard Recovery

Substitute Part Grouping Explanation

Substitution of the CS223-2M TR is determined by equivalence in the following critical parameters:

Voltage - Off State: 600V blocking voltage requirement
SCR Type: Standard Recovery classification
Package / Case: TO-261-4, TO-261AA (SOT-223 surface mount)
Mounting Type: Surface Mount compatibility
Operating Temperature Range: -50°C to 125°C (TJ)

The CS223-4M TR PBFREE qualifies as a direct substitute based on matching off-state voltage, SCR type, package configuration, and operating temperature range. Current-handling capability differences are addressed in the parameter comparison table below.

Parameter Comparison

Parameter	CS223-2M TR	CS223-4M TR PBFREE	Unit
Voltage - Off State	600	600	V
Voltage - Gate Trigger (Vgt) (Max)	800	800	mV
Current - Gate Trigger (Igt) (Max)	200	200	µA
Voltage - On State (Vtm) (Max)	1.7	2.2	V
Current - On State (It (RMS)) (Max)	2	4	A
Current - Hold (Ih) (Max)	2	2	mA
Current - Off State (Max)	10	10	µA
Current - Non Rep. Surge 50, 60Hz (Itsm)	10	30	A @ 50Hz
Operating Temperature Range	-50 to 125	-50 to 125	°C (TJ)
Package / Case	TO-261-4, TO-261AA	TO-261-4, TO-261AA	SOT-223
SCR Type	Standard Recovery	Standard Recovery
Product Status	Obsolete	Active
RoHS Status	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

The CS223-4M TR PBFREE is the designated substitute for the obsolete CS223-2M TR. Selection is based on the following engineering criteria:

Both parts maintain identical 600V off-state voltage specification, ensuring equivalent blocking capability in circuit applications.
Gate trigger parameters (Vgt and Igt) are identical, confirming compatible gate drive requirements.
Both parts use standard recovery SCR technology in identical SOT-223 surface mount packaging.
The CS223-4M TR PBFREE carries Active product status, ensuring continued availability and supply chain support.
The substitute part is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
Higher current-handling ratings (4A on-state vs. 2A, 30A surge vs. 10A) in the substitute part provide design margin without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the CS223-4M TR PBFREE directly replace the CS223-2M TR in existing designs?

A: Yes. Both parts share identical off-state voltage (600V), gate trigger specifications, SCR type (standard recovery), and SOT-223 surface mount packaging. The substitute part's higher current ratings do not create compatibility issues in circuits designed for the original 2A specification.

Q: What is the difference in on-state voltage between these parts?

A: The CS223-2M TR specifies a maximum on-state voltage (Vtm) of 1.7V, while the CS223-4M TR PBFREE specifies 2.2V maximum. This 0.5V difference reflects the higher current-handling capability of the substitute part and should be evaluated in power dissipation calculations for the specific application.

Q: Are there packaging differences between these parts?

A: No. Both parts use identical TO-261-4 and TO-261AA package configurations in SOT-223 surface mount format. PCB footprints and assembly processes remain unchanged.

Q: Why is the CS223-4M TR PBFREE rated for higher surge current?

A: The CS223-4M TR PBFREE is rated for 30A non-repetitive surge current at 50/60Hz compared to 10A for the CS223-2M TR. This reflects the higher on-state current capability (4A vs. 2A) and represents improved thermal and electrical design margins in the substitute part.

Q: What compliance certifications apply to the substitute part?

A: The CS223-4M TR PBFREE is ROHS3 compliant and REACH unaffected. The original CS223-2M TR compliance status is not specified in available documentation.

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