Q4016RH3TP Equivalent & Substitute Parts

Part Overview

The Q4016RH3TP is an Alternistor-type TRIAC manufactured by Littelfuse Inc., rated for 400 V off-state voltage and 16 A on-state current in a Through Hole TO-220AB package. This snubberless TRIAC is designed for alternating current switching applications and maintains Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this thyristor category.

Substiute Parts

Q4016RH3TP

Littelfuse Inc.In Stock: 1119Q4016RH3TP Datasheet

Current PartRFQ

MAC223A6,127

WeEn SemiconductorsIn Stock: 6736MAC223A6,127 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Q4016RH3TP is determined by the following critical parameters:

• Voltage Rating (Off State): Must equal or exceed 400 V to maintain voltage margin in the application circuit
• Package and Mounting: Must be TO-220-3 Through Hole to ensure mechanical and thermal compatibility with existing PCB layouts
• Gate Trigger Voltage (Vgt): Must not exceed 1.3 V maximum to ensure reliable gate drive compatibility
• Gate Trigger Current (Igt): Must not exceed 20 mA maximum to maintain gate circuit design margins
• Hold Current (Ih): Must not exceed 35 mA maximum for circuit stability
• Operating Temperature Range: Must support -40°C to 125°C minimum to match thermal requirements
• RoHS3 Compliance: Required for regulatory and supply chain continuity

The MAC223A6,127 qualifies as a substitute based on matching voltage rating, package type, mounting configuration, and compliance certifications. Current-on-state rating differences (25 A vs. 16 A) represent an uprating that does not compromise circuit function when the application requires only 16 A maximum.

Parameter Comparison

Engineering Selection Recommendations

The MAC223A6,127 is electrically and mechanically compatible with the Q4016RH3TP for applications requiring 16 A on-state current at 400 V off-state voltage. Both devices maintain ROHS3 compliance and identical TO-220-3 package specifications. The MAC223A6,127 provides higher current capacity (25 A vs. 16 A) and improved surge current ratings, which do not create incompatibility when the circuit design specifies 16 A maximum operation. Gate trigger parameters of the MAC223A6,127 (Vgt 1.5 V, Igt 50 mA) remain within acceptable margins for standard gate drive circuits designed for the Q4016RH3TP. The Q4016RH3TP remains the primary choice when Littelfuse supply or specific Alternistor-type performance is required. The MAC223A6,127 serves as a qualified alternative when WeEn Semiconductors supply or higher current margin is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the MAC223A6,127 directly replace the Q4016RH3TP in existing designs?

A: Yes. Both devices share identical 400 V voltage rating, TO-220-3 package, and Through Hole mounting. The MAC223A6,127 higher on-state current rating (25 A) does not create incompatibility when the circuit operates at 16 A maximum. Gate trigger voltage and current parameters remain within acceptable design margins.

Q: What is the difference between Alternistor and Standard TRIAC types?

A: The Q4016RH3TP is classified as Alternistor-type (snubberless), while the MAC223A6,127 is Standard-type. Both are functionally compatible for AC switching applications. Alternistor designation indicates optimized snubberless operation; Standard designation indicates conventional TRIAC characteristics. Selection depends on application snubber requirements and circuit design specifications.

Q: Are there thermal considerations when substituting these parts?

A: Both devices are rated to 125 °C junction temperature and use identical TO-220-3 packages with equivalent thermal characteristics. Thermal performance depends on PCB layout, heatsinking, and application current levels. No additional thermal analysis is required for substitution at equivalent current levels.

Q: What compliance certifications apply to both parts?

A: Both Q4016RH3TP and MAC223A6,127 are ROHS3 compliant. The Q4016RH3TP is REACH Unaffected; the MAC223A6,127 is REACH Affected. Both carry EAR99 ECCN classification and HTSUS code 8541.30.0080. Verify REACH compliance requirements for your specific application and supply chain.

Q: Can the MAC223A6,127 be used in applications requiring the lower gate trigger voltage of the Q4016RH3TP?

A: The MAC223A6,127 gate trigger voltage maximum is 1.5 V compared to 1.3 V for the Q4016RH3TP. This 0.2 V difference is within standard gate drive circuit design margins. Verify gate drive circuit specifications to confirm compatibility with the higher Vgt rating.