MAC08BT1 Equivalent & Substitute Parts Reference

Part Overview

The MAC08BT1 is a Logic-Sensitive Gate TRIAC rated for 200 V off-state voltage and 800 mA on-state current in a surface mount SOT-223 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. Substitute parts must maintain compatibility across gate trigger characteristics, current ratings, and mounting specifications while accommodating voltage rating variations based on application requirements.

Substiute Parts

MAC08BT1

onsemiIn Stock: 2246MAC08BT1 Datasheet

Current PartRFQ

MAC08BT1G

Littelfuse Inc.In Stock: 57309MAC08BT1G Datasheet

DirectRFQ

LX807DTRP

Littelfuse Inc.In Stock: 15723LX807DTRP Datasheet

SimilarRFQ

Z0109MN,135

WeEn SemiconductorsIn Stock: 1087Z0109MN,135 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAC08BT1 is determined by the following criteria:

Direct Equivalents maintain all electrical parameters within specified tolerances: 200 V off-state voltage, 800 mA on-state current, gate trigger voltage ≤ 2 V, and gate trigger current ≤ 10 mA. These parts are pin-compatible and require no circuit modification.

Voltage-Rated Alternatives provide higher off-state voltage ratings (400 V, 600 V) while maintaining the same on-state current class (800 mA to 1 A) and gate trigger characteristics. These parts are suitable for applications where the original 200 V rating is insufficient or where design margin is required. Gate trigger voltage may be lower, which is acceptable for sensitive-gate applications.

Package Compatibility requires surface mount configuration with TO-261-4 or TO-261AA case outline. SOT-223 and SC-73 packages are mechanically and electrically compatible within the specified footprint constraints.

Parameter Comparison

Engineering Selection Recommendations

MAC08BT1G (Littelfuse Inc.) is the direct equivalent replacement. This part maintains identical electrical specifications (200 V, 800 mA, 2 V gate trigger) and package configuration. The part is in active production status with ROHS3 compliance, addressing the obsolescence and regulatory compliance limitations of the original MAC08BT1. Inventory availability is substantial (57,200 pcs), supporting production requirements without design modification.

LX807DTRP (Littelfuse Inc.) provides a higher voltage alternative rated for 400 V off-state operation. This part is suitable for applications requiring increased voltage margin or where 400 V operation is specified. Gate trigger voltage is reduced to 1.3 V maximum, which is compatible with sensitive-gate circuit designs. Gate trigger current is reduced to 5 mA maximum, requiring verification that gate drive circuits can accommodate this lower threshold. This part is ROHS3 compliant and actively produced.

Z0109MN,135 (WeEn Semiconductors) provides the highest voltage rating at 600 V off-state with 1 A on-state current capability. This part is suitable for high-voltage applications or designs requiring maximum voltage headroom. The SC-73 package differs from the SOT-223 footprint; PCB layout verification is required before selection. This part is RoHS compliant and actively produced with limited inventory (1,029 pcs).

Frequently Asked Questions (FAQ)

Q: Can MAC08BT1G be used as a direct drop-in replacement for MAC08BT1?

A: Yes. MAC08BT1G maintains identical electrical specifications and package configuration. No circuit modification is required. The part is pin-compatible and functionally equivalent.

Q: What is the difference between the 200 V, 400 V, and 600 V rated parts?

A: The voltage rating indicates the maximum off-state voltage the TRIAC can withstand. Selection depends on the application's supply voltage and required safety margin. A 200 V part is suitable for 120 V or 230 V AC applications with appropriate margin. A 400 V part provides additional margin for 230 V AC circuits. A 600 V part is used in high-voltage applications or where maximum voltage headroom is required.

Q: Are there package compatibility concerns between SOT-223 and SC-73?

A: Both packages use TO-261-4 and TO-261AA case outlines and are mechanically compatible. However, SC-73 and SOT-223 have different footprint dimensions. PCB layout must be verified before substituting Z0109MN,135 for SOT-223 packaged parts.

Q: Does the lower gate trigger voltage of LX807DTRP and Z0109MN,135 affect circuit operation?

A: Lower gate trigger voltage (1.3 V vs. 2 V) is compatible with sensitive-gate circuit designs and does not negatively impact performance. Gate drive circuits designed for 2 V triggering will operate reliably with parts rated for 1.3 V maximum.

Q: What are the RoHS compliance implications?

A: MAC08BT1 is RoHS non-compliant. MAC08BT1G and LX807DTRP are ROHS3 compliant. Z0109MN,135 is RoHS compliant. For applications subject to RoHS regulations, MAC08BT1G or LX807DTRP are required.

Q: Is inventory availability a consideration for part selection?

A: MAC08BT1G has substantial inventory (57,200 pcs), supporting high-volume production. LX807DTRP has moderate inventory (15,620 pcs). Z0109MN,135 has limited inventory (1,029 pcs). Procurement planning should account for these availability levels.