CS220-10D Equivalent & Substitute Parts

Part Overview

The CS220-10D is a Silicon Controlled Rectifier (SCR) rated for 400V 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 ongoing production requirements. 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	400	V
Current - On State (It (RMS)) (Max)	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
SCR Type	Standard Recovery	-
Operating Temperature	-40 to 125	°C
Package / Case	TO-220-3	-
Mounting Type	Through Hole	-

Substitute Part Grouping Explanation

Substitution of the CS220-10D is determined by the following critical parameters:

Voltage Rating (Off State): Must equal or exceed 400V to maintain blocking capability
Current Rating (On State RMS): Must support minimum 10A RMS to handle design load requirements
Gate Trigger Parameters: Vgt and Igt must remain within compatible ranges to ensure reliable gate drive circuits
On-State Voltage Drop: Vtm specifications must be comparable to prevent thermal design changes
Hold Current: Ih must be compatible with circuit latching requirements
Package and Mounting: TO-220-3 through-hole configuration required for mechanical and thermal compatibility
SCR Type: Standard Recovery classification ensures switching characteristics remain consistent
Temperature Range: Operating range must cover -40°C to 125°C minimum

The TYN408GRG from STMicroelectronics meets these substitution criteria while offering active product status and improved availability.

Parameter Comparison

Parameter	CS220-10D	TYN408GRG	Unit
Manufacturer	Central Semiconductor Corp	STMicroelectronics	-
Product Status	Obsolete	Active	-
Voltage - Off State	400	400	V
Current - On State (It (RMS)) (Max)	10	8	A
Voltage - Gate Trigger (Vgt) (Max)	1.5	1.5	V
Current - Gate Trigger (Igt) (Max)	15	25	mA
Voltage - On State (Vtm) (Max)	1.6	1.6	V
Current - Hold (Ih) (Max)	30	45	mA
SCR Type	Standard Recovery	Standard Recovery	-
Operating Temperature	-40 to 125	-40 to 125	°C
Package / Case	TO-220-3	TO-220-3	-
Mounting Type	Through Hole	Through Hole	-

Engineering Selection Recommendations

The TYN408GRG is a direct substitute for the obsolete CS220-10D based on matching voltage ratings, gate trigger specifications, on-state voltage characteristics, and identical package configuration. The substitute maintains the same operating temperature range and SCR type classification.

The TYN408GRG offers the advantage of active product status with current manufacturing support from STMicroelectronics. The component is RoHS3 compliant, providing regulatory alignment for modern applications. Current availability is significantly higher (1565 pieces in stock versus 742 pieces for the obsolete CS220-10D).

The primary design consideration is the on-state current rating: the TYN408GRG is rated for 8A RMS maximum compared to the CS220-10D at 10A RMS. Applications requiring the full 10A RMS capacity must evaluate whether the 8A rating is acceptable for the intended load profile. Gate trigger current specification increases from 15mA to 25mA, requiring verification that gate drive circuits can supply this higher current without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the TYN408GRG directly replace the CS220-10D without circuit modifications?

A: The TYN408GRG is mechanically and electrically compatible in TO-220-3 through-hole applications. However, the reduced on-state current rating (8A versus 10A) and increased gate trigger current (25mA versus 15mA) must be evaluated against specific application requirements. Gate drive circuits must confirm capability to supply 25mA trigger current.

Q: What is the impact of the lower current rating on thermal design?

A: The TYN408GRG's 8A RMS rating versus the CS220-10D's 10A RMS rating affects maximum continuous current capacity. Applications operating near the 10A limit require thermal analysis to confirm the 8A substitute remains within acceptable junction temperature limits under worst-case conditions.

Q: Are there any compliance or certification differences between these parts?

A: The TYN408GRG carries RoHS3 compliance certification, while the CS220-10D obsolete status does not include modern compliance documentation. Both parts share identical REACH status (REACH Unaffected) and ECCN classification (EAR99).

Q: How do the gate trigger parameters affect circuit design?

A: Both parts specify identical maximum gate trigger voltage (Vgt) of 1.5V, ensuring gate drive voltage compatibility. The increased gate trigger current requirement (25mA for TYN408GRG versus 15mA for CS220-10D) may require gate drive circuit verification to confirm adequate current sourcing capability.

Q: Is the TO-220-3 package identical between both parts?

A: Both parts use TO-220-3 through-hole packages with identical mechanical dimensions and pin configurations, ensuring direct PCB compatibility without layout modifications.

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