CS220-16P Equivalent & Substitute Parts

Part Overview

The CS220-16P is a Silicon Controlled Rectifier (SCR) rated for 1 kV off-state voltage and 16 A RMS on-state current 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 system redesign, production continuity, and long-term supply chain management.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	1	kV
Voltage - Gate Trigger (Vgt) (Max)	1.5	V
Current - Gate Trigger (Igt) (Max)	15	mA
Voltage - On State (Vtm) (Max)	1.6	V
Current - On State (It (RMS)) (Max)	16	A
Current - Hold (Ih) (Max)	20	mA
SCR Type	Standard Recovery	-
Operating Temperature Range	-40 to 125	°C
Mounting Type	Through Hole	-
Package / Case	TO-220-3	-

Substitute Part Grouping Explanation

Substitution of the CS220-16P is determined by matching the following critical electrical and mechanical parameters:

Off-state voltage rating: 1 kV minimum
RMS on-state current rating: 16 A minimum
Gate trigger voltage (Vgt): 1.5 V maximum
On-state voltage drop (Vtm): 1.6 V maximum
Package type: TO-220-3 through-hole configuration
SCR recovery type: Standard Recovery
Operating temperature range: -40°C to 125°C minimum

The SK016RTP from Littelfuse meets all these substitution criteria and is classified as an active product with current manufacturing support.

Parameter Comparison

Parameter	CS220-16P (Central Semiconductor)	SK016RTP (Littelfuse)	Match Status
Voltage - Off State	1 kV	1 kV	Equivalent
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	1.5 V	Equivalent
Current - Gate Trigger (Igt) (Max)	15 mA	30 mA	Compatible (substitute higher)
Voltage - On State (Vtm) (Max)	1.6 V	1.6 V	Equivalent
Current - On State (It (RMS)) (Max)	16 A	16 A	Equivalent
Current - Hold (Ih) (Max)	20 mA	40 mA	Compatible (substitute higher)
SCR Type	Standard Recovery	Standard Recovery	Equivalent
Operating Temperature Range	-40 to 125°C	-40 to 125°C	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	TO-220-3	TO-220-3	Equivalent

Engineering Selection Recommendations

The SK016RTP is a direct substitute for the CS220-16P based on electrical and mechanical parameter equivalence. Key selection factors:

The SK016RTP is an active product with current manufacturing support, ensuring long-term availability and supply chain stability.
The SK016RTP is RoHS3 compliant, meeting modern environmental and regulatory requirements.
Gate trigger current (Igt) and hold current (Ih) are higher in the SK016RTP; these represent conservative design margins and do not prevent substitution in applications designed for the CS220-16P.
Both components share identical voltage ratings, on-state current ratings, and thermal operating ranges.
Pinout and mechanical footprint are compatible within the TO-220-3 package standard.

Frequently Asked Questions (FAQ)

Q: Can the SK016RTP directly replace the CS220-16P in existing designs?

A: Yes. The SK016RTP meets or exceeds all critical electrical parameters of the CS220-16P. The higher gate trigger current and hold current values in the SK016RTP provide design margin and do not create incompatibility with circuits designed for the original part.

Q: Are there any package compatibility concerns?

A: No. Both the CS220-16P and SK016RTP use the TO-220-3 through-hole package. Pin assignments and mechanical dimensions are standard across this package type, ensuring direct PCB compatibility.

Q: What is the difference between TO-220-3 and TO-220AB-R packaging?

A: TO-220AB-R is a variant designation used by Littelfuse for the SK016RTP. It represents the same TO-220-3 package with a specific mounting tab configuration. The electrical and mechanical interface remains compatible with standard TO-220-3 footprints.

Q: Why is the CS220-16P listed as obsolete?

A: Obsolete status indicates that Central Semiconductor Corp has discontinued manufacturing. The SK016RTP provides an active, supported alternative from a major thyristor manufacturer.

Q: Are there compliance differences between the two parts?

A: The SK016RTP is RoHS3 compliant, while the CS220-16P compliance status is not specified in available data. Both parts are REACH unaffected and carry EAR99 export classification.

Q: What is the current availability of each part?

A: The CS220-16P has 826 pieces in stock as new original inventory. The SK016RTP has 1,786 pieces in stock, indicating stronger current availability and supply chain support.

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