SIX3439K-TP MOSFET N/P-Channel Equivalent & Substitute Parts

Part Overview

The SIX3439K-TP is a dual-channel MOSFET array manufactured by Micro Commercial Co, configured with N-channel and P-channel transistors in a surface mount SOT-563 package. This component operates at 20V drain-to-source voltage with continuous drain currents of 750mA and 660mA. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and production continuity.

Substiute Parts

SIX3439K-TP

Micro Commercial CoIn Stock: 108132SIX3439K-TP Datasheet

Current PartRFQ

SIX3439KA-TP

Micro Commercial CoIn Stock: 851SIX3439KA-TP Datasheet

MFR RecommendedRFQ

NTZD3155CT1G

onsemiIn Stock: 38490NTZD3155CT1G Datasheet

SimilarRFQ

NTZD3155CT2G

onsemiIn Stock: 105191NTZD3155CT2G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SIX3439K-TP is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Drain to Source Voltage (Vdss) must equal or exceed 20V
• Configuration must be N and P-Channel dual-channel array
• Logic Level Gate feature required for gate drive compatibility
• Operating temperature range must support 150°C maximum junction temperature
• Package must be SOT-563 or SOT-666 for mechanical and thermal compatibility

Substitute Classification:

MFR Recommended Substitute: SIX3439KA-TP meets all electrical parameters with identical Vdss (20V), matching configuration (N and P-Channel), and identical package (SOT-563). This part is manufactured by the same supplier (Micro Commercial Co) and carries active product status, providing direct functional replacement with enhanced specifications including defined power dissipation (150mW) and extended operating temperature range (-55°C to 150°C).

Similar Manufacturer Substitutes: NTZD3155CT1G and NTZD3155CT2G are manufactured by onsemi and provide functional equivalence through matching Vdss (20V), N and P-Channel configuration, Logic Level Gate feature, and SOT-563 package. These parts operate within the required temperature range (-55°C to 150°C) and carry active product status. Current ratings are lower (540mA and 430mA) compared to the original part, requiring application-level verification of current requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: SIX3439KA-TP

The SIX3439KA-TP is the manufacturer-recommended substitute for the obsolete SIX3439K-TP. Both parts are manufactured by Micro Commercial Co and share identical electrical specifications for Vdss (20V), configuration (N and P-Channel), and package format (SOT-563). The SIX3439KA-TP carries active product status, ensuring long-term availability and supply chain continuity. This part includes defined power dissipation (150mW) and an extended operating temperature range (-55°C to 150°C) compared to the original specification. Compliance certifications include ROHS3 and REACH Unaffected status.

Secondary Selection: NTZD3155CT2G

The NTZD3155CT2G, manufactured by onsemi, provides functional equivalence through matching Vdss (20V), N and P-Channel configuration, Logic Level Gate feature, and SOT-563 package. This part carries active product status and meets ROHS3 compliance and REACH Unaffected requirements. The Tape & Reel packaging format aligns with production requirements. Continuous drain current ratings (540mA and 430mA) are lower than the original part; applications requiring drain currents exceeding these values require circuit-level analysis.

Tertiary Selection: NTZD3155CT1G

The NTZD3155CT1G provides identical electrical and package specifications to NTZD3155CT2G with Cut Tape and Digi-Reel® packaging. This configuration is suitable for lower-volume applications or manual assembly processes. All compliance and temperature specifications match NTZD3155CT2G.

Frequently Asked Questions (FAQ)

Q: Can SIX3439KA-TP directly replace SIX3439K-TP in existing designs?

A: Yes. The SIX3439KA-TP is the manufacturer-recommended substitute with identical Vdss (20V), matching N and P-Channel configuration, and identical SOT-563 package. Both parts are manufactured by Micro Commercial Co. No circuit modifications are required for direct substitution.

Q: What are the key differences between SIX3439KA-TP and NTZD3155CT2G?

A: Both parts share identical Vdss (20V), configuration (N and P-Channel), Logic Level Gate feature, and SOT-563 package. Primary differences include manufacturer (Micro Commercial Co versus onsemi), continuous drain current ratings (750mA/600mA versus 540mA/430mA), and on-resistance specifications. Applications requiring drain currents above 540mA/430mA must use SIX3439KA-TP.

Q: Are all substitute parts RoHS3 compliant?

A: SIX3439KA-TP compliance status is not specified in available documentation. NTZD3155CT1G and NTZD3155CT2G are both ROHS3 Compliant. Verification of RoHS3 compliance for SIX3439KA-TP is required for applications with regulatory requirements.

Q: What is the difference between NTZD3155CT1G and NTZD3155CT2G?

A: Both parts are electrically identical with matching Vdss (20V), current ratings (540mA, 430mA), on-resistance (550mOhm @ 540mA, 4.5V), and operating temperature range (-55°C to 150°C). The primary difference is packaging format: NTZD3155CT1G is supplied in Cut Tape and Digi-Reel®, while NTZD3155CT2G is supplied in Tape & Reel. Selection depends on assembly process requirements.

Q: Can NTZD3155CT2G be used in applications requiring 750mA continuous drain current?

A: No. NTZD3155CT2G is rated for maximum continuous drain current of 540mA. Applications requiring 750mA continuous drain current must use SIX3439KA-TP, which is rated for 750mA.

Q: What is the operating temperature range for each substitute?

A: SIX3439K-TP (original) specifies 150°C maximum junction temperature without lower limit. SIX3439KA-TP, NTZD3155CT1G, and NTZD3155CT2G all specify -55°C to 150°C operating temperature range, providing extended low-temperature capability.

Q: Are all parts available in SOT-666 package?

A: All parts listed (SIX3439K-TP, SIX3439KA-TP, NTZD3155CT1G, NTZD3155CT2G) specify SOT-563 and SOT-666 as available package options. Specific package availability should be confirmed with the supplier.