Q4016RH6 Equivalent & Substitute Parts

Part Overview

The Q4016RH6 is a Littelfuse Alternistor-type TRIAC rated for 400 V off-state voltage and 16 A on-state current in a Through Hole TO-220 package. This snubberless design is optimized for applications requiring reduced EMI and simplified circuit design. The part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

Q4016RH6

Littelfuse Inc.In Stock: 776Q4016RH6 Datasheet

Current PartRFQ

BTA216-600B,127

WeEn SemiconductorsIn Stock: 840BTA216-600B,127 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Q4016RH6 is determined by the following critical parameters:

• Voltage Rating (Off State): The substitute must equal or exceed 400 V to maintain circuit protection margins
• Current Rating (On State): The substitute must support 16 A RMS minimum to handle design load requirements
• Package Type: TO-220-3 Through Hole configuration is mandatory for mechanical and thermal compatibility
• Gate Trigger Characteristics: Vgt and Igt parameters must be compatible with existing gate drive circuitry
• Temperature Range: Operating range must support -40°C to 125°C minimum

The BTA216-600B,127 meets these substitution criteria with a higher voltage rating (600 V), matching current capacity (16 A), identical package (TO-220-3), and compatible gate trigger specifications within acceptable design tolerances.

Parameter Comparison

Engineering Selection Recommendations

The BTA216-600B,127 is the manufacturer-recommended substitute for the Q4016RH6. Selection is based on the following factors:

• Product Status: The Q4016RH6 is discontinued at DiGi Electronics; the BTA216-600B,127 is active and available
• Electrical Compatibility: Matching 16 A current rating and TO-220-3 package ensure direct functional replacement
• Voltage Margin: The 600 V rating of the substitute provides additional safety margin over the 400 V design requirement
• Compliance: Both parts meet RoHS standards; the substitute maintains environmental compliance requirements
• Availability: The substitute has confirmed inventory (767 Pcs) versus the main part's discontinued status

For applications with strict surge current requirements, verify that the lower Itsm rating (140 A, 150 A vs. 167 A, 200 A) is acceptable within your circuit protection scheme.

Frequently Asked Questions (FAQ)

Q: Can the BTA216-600B,127 directly replace the Q4016RH6 in existing designs?

A: Yes. Both parts use the TO-220-3 package with identical pinout and mounting. The 16 A current rating matches exactly. Gate trigger voltage (1.5 V vs. 1.3 V) and gate trigger current (50 mA vs. 80 mA) are within acceptable design tolerances for standard gate drive circuits.

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

A: The Q4016RH6 is an Alternistor-type TRIAC (snubberless design), while the BTA216-600B,127 is a Standard TRIAC. Both are functionally compatible for switching applications. The Alternistor design reduces EMI; the Standard design may require snubber networks in sensitive applications.

Q: Why is the substitute rated for 600 V when the application requires only 400 V?

A: Higher voltage rating provides design margin and protection against transient overvoltages. This is standard practice in component selection and does not negatively affect performance at 400 V operation.

Q: Are there any thermal considerations when substituting?

A: Both parts operate to 125°C junction temperature. Verify that the Q4016RH6's lower temperature limit (-40°C) is not critical for your application, as the BTA216-600B,127 datasheet does not specify a minimum operating temperature.

Q: What about the difference in non-repetitive surge current ratings?

A: The Q4016RH6 is rated 167 A / 200 A (50/60 Hz) while the BTA216-600B,127 is rated 140 A / 150 A. If your circuit relies on these surge ratings for protection coordination, verify that the lower rating is acceptable for your application's fault current profile.

Q: Is the packaging identical between the two parts?

A: Yes. Both use TO-220-3 Through Hole packages with non-isolated tabs. PCB layout and heatsink mounting are directly compatible.