Q2016LH4 Equivalent & Substitute Parts

Part Overview

The Q2016LH4 is a Littelfuse TRIAC Alternistor rated for 200 V off-state voltage and 16 A on-state current in a TO-220 Isolated Tab package. This component is classified as Obsolete, making identification of functionally equivalent substitutes necessary for ongoing design support and procurement.

The Q2016LH4 operates across a temperature range of -40°C to 125°C and features snubberless design characteristics. Due to its obsolete status, alternative TRIAC devices with compatible electrical and mechanical specifications are required for system continuity.

Substiute Parts

Q2016LH4

LittelfuseIn Stock: 1230Q2016LH4 Datasheet

Current PartRFQ

BTA216X-600F,127

WeEn SemiconductorsIn Stock: 775BTA216X-600F,127 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Q2016LH4 is determined by the following critical parameters:

• Voltage Rating (Off State): The substitute must support at least 200 V off-state voltage to maintain circuit protection margins
• Current Rating (On State): The substitute must support at least 16 A RMS on-state current
• Gate Trigger Characteristics: Vgt and Igt parameters must be compatible with existing gate drive circuitry
• Hold Current (Ih): Must not exceed the original specification to prevent unintended latching behavior
• Package / Case: TO-220 form factor with isolated tab configuration ensures mechanical and thermal compatibility
• Operating Temperature: Must support the -40°C to 125°C range
• Compliance: RoHS compliance status must be maintained for regulatory requirements

The BTA216X-600F,127 (WeEn Semiconductors) qualifies as a substitute based on these parameters. While it features a higher off-state voltage rating (600 V), this represents an acceptable design margin and does not compromise circuit functionality. The 16 A on-state current rating matches the original specification. Gate trigger parameters (Vgt 1.5 V max, Igt 25 mA max) remain within acceptable operating ranges for standard gate drive circuits. The TO-220F package maintains mechanical compatibility with the original TO-220 Isolated Tab configuration.

Parameter Comparison

Engineering Selection Recommendations

The BTA216X-600F,127 is the recommended substitute for the obsolete Q2016LH4 based on the following engineering criteria:

Product Status: The BTA216X-600F,127 maintains Active product status with established supply chain availability, addressing the procurement challenge created by the Q2016LH4's Obsolete classification.

Electrical Compatibility: The 16 A on-state current rating is identical to the original specification. The 600 V off-state voltage rating exceeds the 200 V requirement, providing additional design margin without introducing circuit incompatibility. Gate trigger parameters remain within acceptable ranges for standard gate drive implementations.

Compliance: Both components maintain RoHS compliance status, satisfying regulatory requirements for new designs and ongoing production.

Mechanical Compatibility: The TO-220F package configuration is mechanically compatible with the original TO-220 Isolated Tab mounting, requiring no PCB redesign for component substitution.

Thermal Characteristics: The substitute supports the 125°C maximum junction temperature specification. Verification of the minimum operating temperature requirement is necessary during design validation.

Frequently Asked Questions (FAQ)

Q: Can the BTA216X-600F,127 be used as a direct replacement for the Q2016LH4 without circuit modifications?

A: The BTA216X-600F,127 is mechanically and electrically compatible for direct substitution in TO-220 Isolated Tab mounting positions. The higher voltage rating (600 V vs. 200 V) does not require circuit modifications and provides additional design margin. Gate drive circuitry designed for the Q2016LH4 will operate within acceptable parameters with the substitute device.

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

A: The Q2016LH4 is classified as an Alternistor with snubberless design, while the BTA216X-600F,127 is a Standard TRIAC. Both are functionally equivalent for AC switching applications. The snubberless designation indicates the Q2016LH4 was optimized for reduced external snubber network requirements, but this does not prevent substitution with a Standard TRIAC in most applications.

Q: Are the gate trigger parameters compatible between these devices?

A: Yes. The Q2016LH4 specifies Vgt max of 1.3 V and Igt max of 35 mA. The BTA216X-600F,127 specifies Vgt max of 1.5 V and Igt max of 25 mA. Gate drive circuits designed for the original device will operate within acceptable parameters with the substitute. The lower Igt requirement of the substitute may reduce gate drive power dissipation.

Q: What is the significance of the TO-220F package designation?

A: The TO-220F designation indicates a full-pack configuration, while the original Q2016LH4 uses TO-220 Isolated Tab. Both are mechanically compatible TO-220 form factors suitable for through-hole PCB mounting. The isolated tab configuration provides electrical isolation between the mounting surface and the device case, which is maintained in both components.

Q: Is the lower surge current rating of the BTA216X-600F,127 a concern?

A: The BTA216X-600F,127 specifies non-repetitive surge current of 140 A / 150 A (50/60 Hz) compared to the Q2016LH4's 167 A / 200 A. This difference should be evaluated against the specific application's surge protection requirements and circuit design margins. For most standard AC switching applications, the substitute rating is adequate.

Q: What compliance certifications apply to both devices?

A: Both the Q2016LH4 and BTA216X-600F,127 maintain RoHS compliance status. The Q2016LH4 is ROHS3 Compliant, while the BTA216X-600F,127 is RoHS Compliant. Both devices carry ECCN EAR99 and HTSUS 8541.30.0080 classifications. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for both components.