S2010R Equivalent & Substitute Parts

Part Overview

The S2010R is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse Inc., rated for 200V off-state voltage and 10A RMS on-state current 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 S2010R operates across a temperature range of -40°C to 125°C and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substiute Parts

S2010R

Littelfuse Inc.In Stock: 716S2010R Datasheet

Current PartRFQ

MCR218-4G

onsemiIn Stock: 10234MCR218-4G Datasheet

MFR RecommendedRFQ

TYN612RG

STMicroelectronicsIn Stock: 4921TYN612RG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S2010R is determined by the following critical parameters: off-state voltage rating, on-state current capacity (RMS), gate trigger characteristics, on-state voltage drop, and physical package compatibility. All substitute parts must maintain the TO-220-3 through-hole mounting configuration and operate within the specified temperature range.

Two substitute parts are identified based on these criteria:

MCR218-4G (onsemi): Matches the 200V off-state voltage rating and maintains compatible gate trigger specifications (Vgt 1.5V max, Igt 25mA max). On-state current is rated at 8A RMS, which is lower than the original 10A specification. On-state voltage (1.8V max) is slightly elevated compared to the S2010R (1.6V max). This part is active and available in bulk packaging.

TYN612RG (STMicroelectronics): Provides a higher off-state voltage rating of 600V, exceeding the S2010R specification. On-state current is rated at 12A RMS, exceeding the original 10A requirement. Gate trigger voltage (1.3V max) is lower than the S2010R specification. This part is active and available in tube packaging. The elevated voltage rating provides additional design margin for applications with potential voltage transients.

Parameter Comparison

Engineering Selection Recommendations

MCR218-4G Selection: This part is suitable for applications where the 200V off-state voltage specification is critical and on-state current requirements do not exceed 8A RMS. The active product status ensures long-term availability and supply chain stability. The slightly elevated on-state voltage drop (1.8V vs. 1.6V) results in increased power dissipation and should be evaluated in thermal design calculations. Higher gate trigger current (25mA max vs. 15mA) may require gate drive circuit adjustment.

TYN612RG Selection: This part is suitable for applications requiring higher voltage margin or where voltage transients may exceed 200V. The 600V off-state rating provides additional design headroom. The higher on-state current rating (12A RMS) accommodates applications with current requirements up to 10A with additional capacity. The lower off-state leakage current (5µA vs. 10µA) reduces standby power consumption. ROHS3 compliance and active product status support long-term production viability. The elevated off-state voltage rating may introduce unnecessary cost and component size if the application circuit operates strictly within 200V specifications.

Both substitute parts maintain the TO-220-3 package configuration, enabling direct mechanical replacement without PCB layout modification. Standard Recovery SCR type classification ensures switching characteristics remain consistent with the original design.

Frequently Asked Questions (FAQ)

Q: Can MCR218-4G directly replace S2010R in all applications?

A: MCR218-4G maintains the same 200V off-state voltage and TO-220-3 package as the S2010R. However, the reduced on-state current rating (8A RMS vs. 10A RMS) limits its use to applications drawing 8A or less. The elevated on-state voltage drop (1.8V vs. 1.6V) increases power dissipation by approximately 12.5% at rated current. Gate trigger current is higher (25mA max vs. 15mA), requiring gate drive circuit verification.

Q: When should TYN612RG be selected over MCR218-4G?

A: TYN612RG is selected when the application circuit experiences voltage transients exceeding 200V, when on-state current requirements approach or exceed 8A, or when lower off-state leakage current is beneficial for standby power reduction. The 600V rating provides design margin for industrial environments with potential voltage spikes.

Q: Are there package compatibility concerns with these substitutes?

A: All three parts use the TO-220-3 through-hole package. MCR218-4G is supplied in TO-220AB variant, and TYN612RG in standard TO-220 variant. Both are mechanically compatible with TO-220-3 PCB footprints. Verify supplier device package specifications with your PCB design to confirm lead spacing and mounting hole alignment.

Q: What is the impact of higher on-state voltage in MCR218-4G?

A: The 0.2V increase in on-state voltage drop (1.8V vs. 1.6V) results in proportionally higher power dissipation. At 8A, this represents an additional 1.6W of heat generation compared to the S2010R at the same current. Thermal design calculations must account for this increase to ensure adequate heat sinking.

Q: Do these substitutes maintain the same gate trigger sensitivity?

A: Gate trigger voltage (Vgt) specifications are comparable: S2010R 1.5V max, MCR218-4G 1.5V max, TYN612RG 1.3V max. However, MCR218-4G requires higher gate trigger current (25mA max vs. 15mA), which may necessitate gate drive circuit redesign. TYN612RG maintains the same 15mA specification as the original part.

Q: Are these parts suitable for new production designs?

A: Both MCR218-4G and TYN612RG carry active product status, ensuring availability and supply chain support for new production. The S2010R is obsolete and should not be specified for new designs. Select the substitute part based on voltage and current requirements specific to your application circuit.