S2025RTP Equivalent & Substitute Parts

Part Overview

The S2025RTP is a 200V 25A standard recovery SCR (silicon-controlled rectifier) in TO-220 through-hole packaging manufactured by Littelfuse Inc. This thyristor is currently obsolete, with 1,038 units available in stock. Due to its obsolete status, equivalent and substitute parts with higher voltage ratings or from alternative manufacturers are necessary for new designs and ongoing production requirements. Substitute parts maintain compatible gate trigger characteristics, on-state performance, and thermal operating ranges while offering improved availability and active product status.

Substiute Parts

S2025RTP

Littelfuse Inc.In Stock: 1058S2025RTP Datasheet

Current PartRFQ

S4025RTP

LittelfuseIn Stock: 1765S4025RTP Datasheet

UpgradeRFQ

S6025RTP

Littelfuse Inc.In Stock: 939S6025RTP Datasheet

UpgradeRFQ

TYN625RG

STMicroelectronicsIn Stock: 1564TYN625RG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the S2025RTP is determined by the following critical parameters:

• Gate Trigger Voltage (Vgt): Maximum 1.5 V for S2025RTP; substitute parts must not exceed 1.5 V to ensure compatible gate drive circuits
• Gate Trigger Current (Igt): Maximum 35 mA; substitute parts must not exceed this threshold
• On-State Current (It (RMS)): 25 A rating must be maintained
• On-State Voltage (Vtm): Maximum 1.6 V for consistent thermal performance
• Hold Current (Ih): Maximum 50 mA
• Operating Temperature: -40°C to 125°C range must be supported
• Mounting and Package: TO-220-3 through-hole configuration required
• SCR Type: Standard Recovery classification

Substitute parts are grouped into two categories:

Upgrade Substitutes (Higher Voltage Rating): S4025RTP (400V) and S6025RTP (600V) from Littelfuse maintain identical gate trigger, on-state, and hold current specifications while providing higher blocking voltage capability. These are direct Littelfuse product line upgrades with active product status.

Cross-Manufacturer Substitute (Higher Voltage Rating): TYN625RG from STMicroelectronics provides 600V blocking voltage with compatible gate trigger and on-state characteristics. Gate trigger voltage is 1.3 V (lower than S2025RTP maximum), and gate trigger current is 40 mA (higher than S2025RTP maximum of 35 mA).

Parameter Comparison

Engineering Selection Recommendations

For Direct Littelfuse Product Line Continuity: S4025RTP and S6025RTP are preferred substitutes. Both maintain identical gate trigger specifications (1.5 V maximum) and on-state current ratings (25 A RMS) as the S2025RTP. S4025RTP provides 400V blocking voltage, suitable for applications requiring voltage headroom above 200V. S6025RTP provides 600V blocking voltage for higher-voltage applications. Both are active products with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

For Cross-Manufacturer Compatibility: TYN625RG from STMicroelectronics is an active product offering 600V blocking voltage with ROHS3 compliance. Gate trigger voltage is 1.3 V (within the S2025RTP maximum of 1.5 V), and gate trigger current is 40 mA (5 mA higher than S2025RTP maximum of 35 mA). Off-state leakage current is 5 µA (lower than S2025RTP at 10 µA), indicating superior blocking performance.

All substitute parts maintain TO-220-3 through-hole packaging, identical on-state voltage (1.6 V maximum), hold current (50 mA maximum), and operating temperature range (-40°C to 125°C). Selection should be based on required blocking voltage, gate drive circuit compatibility, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can S4025RTP or S6025RTP be used as direct replacements for S2025RTP?

A: Yes, within the constraints of your circuit design. S4025RTP and S6025RTP maintain identical gate trigger voltage (1.5 V maximum), gate trigger current (35 mA maximum), on-state voltage (1.6 V maximum), and on-state current (25 A RMS maximum) as the S2025RTP. The higher blocking voltage ratings (400V and 600V respectively) do not degrade performance in 200V applications; they provide additional voltage margin. Verify that your circuit topology does not depend on the specific 200V blocking voltage characteristic of the S2025RTP.

Q: What is the difference between S6025RTP and TYN625RG?

A: Both are 600V, 25A standard recovery SCRs in TO-220-3 packaging with identical on-state voltage (1.6 V maximum) and on-state current (25 A RMS maximum). S6025RTP is manufactured by Littelfuse with gate trigger voltage of 1.5 V maximum and gate trigger current of 35 mA maximum. TYN625RG is manufactured by STMicroelectronics with gate trigger voltage of 1.3 V maximum and gate trigger current of 40 mA maximum. TYN625RG has lower off-state leakage current (5 µA versus 10 µA). Selection depends on gate drive circuit design and manufacturer preference.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. S4025RTP, S6025RTP, and TYN625RG are all ROHS3 compliant with unlimited moisture sensitivity level (MSL 1), matching the compliance profile of the S2025RTP.

Q: Does the TO-220AB-R package designation for S6025RTP affect compatibility?

A: The S6025RTP supplier device package is designated TO-220AB-R, while the S2025RTP is TO-220 Non-Isolated Tab. Both use the standard TO-220-3 case outline. The AB-R designation indicates a specific tab configuration. Verify mechanical fit in your application, particularly if the PCB layout or heatsink mounting has specific tab orientation requirements.

Q: What is the significance of the higher gate trigger current (40 mA) in TYN625RG compared to S2025RTP (35 mA)?

A: TYN625RG requires up to 40 mA gate trigger current, compared to 35 mA maximum for S2025RTP. This 5 mA difference is within typical gate drive circuit capability. Verify that your gate drive circuit can supply the required current for reliable triggering. The lower gate trigger voltage (1.3 V) of TYN625RG may partially offset the higher current requirement in some circuit topologies.