Q8025RH5TP TRIAC Alternistor 800V 25A Equivalent & Substitute Parts

Part Overview

The Q8025RH5TP is a Littelfuse TRIAC Alternistor rated for 800V off-state voltage and 25A on-state current in a Through Hole TO-220AB package. This snubberless thyristor is designed for AC switching applications requiring high voltage and current handling capability. The part is Active status and ROHS3 compliant, making it suitable for modern industrial and consumer applications. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility to ensure direct functional replacement in circuit designs.

Substiute Parts

Q8025RH5TP

LittelfuseIn Stock: 1107Q8025RH5TP Datasheet

Current PartRFQ

Q8025LH5TP

Littelfuse Inc.In Stock: 1637Q8025LH5TP Datasheet

Parametric EquivalentRFQ

BTA24-800CWRG

STMicroelectronicsIn Stock: 2604BTA24-800CWRG Datasheet

MFR RecommendedRFQ

BTB24-800CWRG

STMicroelectronicsIn Stock: 2214BTB24-800CWRG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Q8025RH5TP are qualified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Voltage - Off State: 800 V (exact match required)
• Current - On State (It (RMS)) (Max): 25 A (exact match required)
• Package / Case: TO-220-3 (mechanical compatibility)
• Mounting Type: Through Hole (board integration compatibility)
• Triac Type: Alternistor - Snubberless (functional classification)

Secondary Compatibility Parameters:

• Voltage - Gate Trigger (Vgt) (Max): 1.3 V (gate drive compatibility)
• Current - Gate Trigger (Igt) (Max): ≤ 50 mA (gate circuit design compatibility)
• Current - Hold (Ih) (Max): ≤ 50 mA (holding current specification)
• Operating Temperature Range: -40°C ~ 125°C (thermal operating envelope)
• RoHS Status: ROHS3 Compliant (regulatory compliance)

Substitute parts meeting all primary criteria and secondary compatibility parameters are direct functional replacements suitable for circuit-level substitution without design modification.

Parameter Comparison

Engineering Selection Recommendations

Q8025LH5TP (Littelfuse): Parametric equivalent with identical electrical specifications and TO-220-3 package configuration. Active product status with ROHS3 compliance. Supplier device package designation TO-220AB-R indicates tape-and-reel packaging variant. Suitable for direct substitution in applications where Littelfuse product line continuity is required.

BTA24-800CWRG (STMicroelectronics): Manufacturer-recommended equivalent meeting all primary electrical specifications. Gate trigger current (Igt) rated at 35 mA maximum, which is lower than the Q8025RH5TP specification of 50 mA maximum, indicating improved gate drive efficiency. Non-repetitive surge current (Itsm) rated at 250A/260A, exceeding the Q8025RH5TP specification. Active product status with ROHS3 compliance. TO-220 package configuration provides mechanical compatibility.

BTB24-800CWRG (STMicroelectronics): Manufacturer-recommended equivalent with identical electrical performance to BTA24-800CWRG. Gate trigger current and surge current specifications match BTA24-800CWRG. Active product status with ROHS3 compliance. TO-220 package configuration provides mechanical compatibility.

All substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original Q8025RH5TP specification.

Frequently Asked Questions (FAQ)

Q: Can Q8025LH5TP be used as a direct replacement for Q8025RH5TP?

A: Yes. Q8025LH5TP is a parametric equivalent with identical electrical specifications (800V, 25A, 1.3V gate trigger, 50mA gate trigger current, 50mA hold current) and TO-220-3 package configuration. The primary difference is the supplier device package designation (TO-220AB-R indicates tape-and-reel format versus tube packaging). Electrical performance and mechanical fit are equivalent.

Q: What is the difference between BTA24-800CWRG and BTB24-800CWRG?

A: Both parts share identical electrical specifications and performance characteristics. The difference lies in the base product number designation (BTA24 versus BTB24), which may indicate internal manufacturing or product line classification by STMicroelectronics. Both are suitable substitutes for the Q8025RH5TP with equivalent gate drive requirements and surge current ratings.

Q: Are the STMicroelectronics parts (BTA24-800CWRG, BTB24-800CWRG) compatible with the Littelfuse Q8025RH5TP?

A: Yes. Both STMicroelectronics parts meet all primary electrical specifications: 800V off-state voltage, 25A on-state current, 1.3V gate trigger voltage, and TO-220-3 package configuration. The gate trigger current specification is 35mA maximum (lower than Q8025RH5TP at 50mA), which represents improved gate drive efficiency. Non-repetitive surge current is rated higher (250A/260A versus 208A/250A), providing additional transient protection margin.

Q: What packaging formats are available for these TRIAC parts?

A: Q8025RH5TP is supplied in Tube packaging. Q8025LH5TP is available in tape-and-reel format (TO-220AB-R designation). BTA24-800CWRG and BTB24-800CWRG are supplied in Tube packaging. All parts use TO-220-3 case configuration for Through Hole mounting on PCBs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Q8025RH5TP, Q8025LH5TP, BTA24-800CWRG, and BTB24-800CWRG are all ROHS3 compliant with Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: What is the operating temperature range for these TRIAC parts?

A: All qualified substitute parts operate across the temperature range -40°C to 125°C (junction temperature TJ), ensuring consistent performance across industrial and consumer application environments.