Q2016NH4RP TRIAC Alternistor Equivalent & Substitute Parts

Part Overview

The Q2016NH4RP is a snubberless TRIAC Alternistor manufactured by Littelfuse Inc., rated for 200 V off-state voltage and 16 A on-state current in a surface mount TO-263 (D2PAK) package. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain compatibility across key electrical parameters including voltage rating, current capacity, gate trigger characteristics, and thermal operating range while accommodating the same package footprint.

Substiute Parts

Q2016NH4RP

Littelfuse Inc.In Stock: 923Q2016NH4RP Datasheet

Current PartRFQ

BTA216B-600F,118

WeEn SemiconductorsIn Stock: 882BTA216B-600F,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Q2016NH4RP is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Package / Case: TO-263-3 D2PAK (2 Leads + Tab) — ensures PCB footprint compatibility
• Mounting Type: Surface Mount — maintains assembly process compatibility
• Current - On State (It RMS) Max: 16 A minimum — preserves load-carrying capacity
• Operating Temperature Range: Must encompass -40°C to 125°C or higher — ensures thermal envelope compatibility
• Voltage - Off State: Must equal or exceed 200 V — ensures blocking voltage adequacy

Functional Compatibility Parameters:

• Voltage - Gate Trigger (Vgt) Max: 1.3 V to 1.5 V range — maintains gate drive circuit compatibility
• Current - Gate Trigger (Igt) Max: 25 mA to 35 mA range — ensures gate control circuit operation
• Current - Hold (Ih) Max: 30 mA to 50 mA range — maintains latching behavior

The BTA216B-600F,118 meets all mandatory criteria with a higher voltage rating (600 V) and active product status, making it a direct functional substitute despite differing TRIAC type classification.

Parameter Comparison

Engineering Selection Recommendations

The BTA216B-600F,118 is the manufacturer-recommended substitute for the obsolete Q2016NH4RP. Selection is justified on the following basis:

Product Status & Availability: The BTA216B-600F,118 maintains active production status with confirmed inventory (785 pcs), ensuring long-term supply continuity compared to the obsolete Q2016NH4RP.

Compliance & Certification: Both parts maintain RoHS compliance and identical Moisture Sensitivity Level (MSL 1 - Unlimited), ensuring compatibility with standard PCB assembly and storage protocols.

Electrical Compatibility: The substitute part meets or exceeds all mandatory electrical parameters. The higher off-state voltage rating (600 V vs. 200 V) provides additional design margin without compromising functionality in 200 V applications. Identical on-state current rating (16 A) and D2PAK package ensure direct PCB compatibility.

Gate Drive Considerations: The BTA216B-600F,118 requires lower gate trigger current (25 mA vs. 35 mA) and exhibits lower hold current (30 mA vs. 50 mA), indicating improved gate sensitivity. Existing gate drive circuits designed for the Q2016NH4RP will operate within acceptable margins for the substitute part.

Thermal Envelope: Both parts specify 125°C maximum junction temperature. The substitute part's minimum operating temperature specification should be verified for applications requiring operation below -40°C.

Frequently Asked Questions (FAQ)

Q: Can the BTA216B-600F,118 be used as a direct drop-in replacement for the Q2016NH4RP?

A: Yes, for applications operating at or below 200 V. The BTA216B-600F,118 maintains identical on-state current rating (16 A), package footprint (TO-263 D2PAK), and mounting type (surface mount). The higher voltage rating (600 V) does not prevent operation in 200 V circuits. Gate drive circuits must accommodate the lower gate trigger current requirement (25 mA vs. 35 mA).

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

A: The Q2016NH4RP is classified as an Alternistor (snubberless design), while the BTA216B-600F,118 is a Standard TRIAC. Both are functionally equivalent for switching applications. The architectural difference does not affect substitution compatibility when electrical parameters align.

Q: Does the higher voltage rating (600 V) of the BTA216B-600F,118 affect circuit operation?

A: No. A TRIAC with a higher voltage rating operates normally in lower-voltage applications. The 600 V rating provides additional blocking voltage margin and does not alter switching characteristics in 200 V circuits.

Q: Are there package compatibility concerns?

A: No. Both parts use identical TO-263-3 D2PAK (2 Leads + Tab) packaging with the same PCB footprint, lead spacing, and thermal tab dimensions. No PCB layout modifications are required.

Q: What should be verified before implementing the substitute part?

A: Confirm that gate drive circuits can operate with the lower gate trigger current specification (25 mA vs. 35 mA) of the BTA216B-600F,118. For applications requiring operation below -40°C, verify the minimum operating temperature of the substitute part with the manufacturer.

Q: Is the BTA216B-600F,118 available in the same packaging format?

A: Yes. The BTA216B-600F,118 is supplied in Tape & Reel (TR) format, standard for surface mount production. The component density and reel specifications are compatible with automated assembly equipment.