SIX3134K-TP Equivalent & Substitute Parts

Part Overview

The SIX3134K-TP is a dual N-channel MOSFET array manufactured by Micro Commercial Co, designed for surface mount applications in the SOT-563 package. This component operates at 20V drain-to-source voltage with 750mA continuous drain current and 150mW maximum power dissipation. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	20	V
Current - Continuous Drain (Id) @ 25°C	750	mA
Rds On (Max) @ Id, Vgs	380 mOhm @ 650mA, 4.5V	mOhm
Vgs(th) (Max) @ Id	1.1	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	20	nC @ 4.5V
Input Capacitance (Ciss) (Max) @ Vds	120	pF @ 16V
Power - Max	150	mW
Operating Temperature (TJ)	150	°C
Configuration	2 N-Channel (Dual)
Package / Case	SOT-563, SOT-666
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SIX3134K-TP is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Drain to Source Voltage (Vdss): 20V minimum
Configuration: Dual N-Channel
Technology: MOSFET (Metal Oxide)
Operating Temperature Range: Support for 150°C junction temperature

Mechanical Compatibility Criteria:

Package Type: SOT-563 or SOT-666 surface mount packages
Mounting Type: Surface mount
Moisture Sensitivity Level: MSL 1 (Unlimited)

Performance Parameters for Selection:

Continuous Drain Current (Id): Minimum 540mA to support 750mA requirement
On-Resistance (Rds On): Lower values indicate improved performance
Gate Charge (Qg): Lower values reduce switching losses
Power Dissipation (Max): Minimum 150mW to support thermal requirements

Substitute parts are grouped based on their ability to meet or exceed these parameters while maintaining package compatibility and compliance certifications.

Parameter Comparison

Parameter	SIX3134K-TP	SIX3134KA-TP	FDY3000NZ	NTZD3154NT1G	NTZD3154NT5G	PMDT290UNE,115
Manufacturer	Micro Commercial Co	Micro Commercial Co	onsemi	onsemi	onsemi	Nexperia USA Inc.
Vdss (V)	20	20	20	20	20	20
Id @ 25°C (mA)	750	750	600	540	540	800
Rds On (Max) (mOhm)	380 @ 650mA, 4.5V	300 @ 500mA, 4.5V	700 @ 600mA, 4.5V	550 @ 540mA, 4.5V	550 @ 540mA, 4.5V	380 @ 500mA, 4.5V
Vgs(th) (Max) (V)	1.1 @ 250µA	0.95 @ 250µA	1.3 @ 250µA	1.0 @ 250µA	1.0 @ 250µA	0.95 @ 250µA
Qg (Max) (nC)	20 @ 4.5V	0.8 @ 4.5V	1.1 @ 4.5V	2.5 @ 4.5V	2.5 @ 4.5V	0.68 @ 4.5V
Ciss (Max) (pF)	120 @ 16V	33 @ 16V	60 @ 10V	150 @ 16V	150 @ 16V	83 @ 10V
Power - Max (mW)	150	180	446	250	250	500
Operating Temperature (°C)	150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Configuration	2 N-Channel	2 N-Channel	2 N-Channel	2 N-Channel	2 N-Channel	2 N-Channel
Package	SOT-563	SOT-563	SOT-563F	SOT-563	SOT-563	SOT-666
Product Status	Obsolete	Active	Last Time Buy	Active	Obsolete	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: SIX3134KA-TP

The SIX3134KA-TP is the manufacturer-recommended equivalent from Micro Commercial Co. This part maintains identical electrical specifications (20V Vdss, 750mA Id, dual N-channel configuration) and package compatibility (SOT-563). The SIX3134KA-TP offers improved performance characteristics with lower on-resistance (300 mOhm vs. 380 mOhm), reduced gate charge (0.8 nC vs. 20 nC), and lower input capacitance (33 pF vs. 120 pF). The part holds Active product status, ensuring long-term availability and supply chain continuity. ROHS3 compliance and MSL 1 rating match the original specification.

Secondary Recommendation: PMDT290UNE,115

The PMDT290UNE,115 from Nexperia USA Inc. provides a higher-performance alternative with 800mA continuous drain current and 500mW maximum power dissipation. This part operates in the SOT-666 package and includes automotive-grade qualification (AEC-Q101). The part exhibits superior electrical characteristics including lower on-resistance (380 mOhm at 500mA) and minimal gate charge (0.68 nC). However, the part is classified as Not For New Designs, limiting its suitability for new product development. ROHS3 compliance and MSL 1 rating are maintained.

Tertiary Recommendation: NTZD3154NT1G

The NTZD3154NT1G from onsemi provides an active alternative with 540mA continuous drain current and 250mW maximum power dissipation in the SOT-563 package. This part maintains full electrical compatibility with 20V Vdss and dual N-channel configuration. The part holds Active product status and ROHS3 compliance. The reduced current rating (540mA vs. 750mA) and higher on-resistance (550 mOhm) require thermal and electrical design verification for applications demanding the full 750mA specification.

Not Recommended for New Designs:

FDY3000NZ (Last Time Buy status) and NTZD3154NT5G (Obsolete status) are not suitable for new product development due to their end-of-life classifications.

Frequently Asked Questions (FAQ)

Q: Can the SIX3134KA-TP directly replace the SIX3134K-TP without circuit modification?

A: Yes. The SIX3134KA-TP maintains identical electrical ratings (20V Vdss, 750mA Id) and package configuration (SOT-563). The improved performance characteristics (lower Rds On, reduced Qg, lower Ciss) provide enhanced circuit performance without requiring design changes.

Q: What is the primary difference between SOT-563 and SOT-666 packages?

A: SOT-563 and SOT-666 are both surface mount packages for dual N-channel MOSFETs. The SOT-666 package provides a larger footprint with different pin spacing. Physical board layout and PCB routing must accommodate the selected package. Electrical performance is equivalent between packages for the same die technology.

Q: Why does the NTZD3154NT1G have lower continuous drain current (540mA) than the SIX3134K-TP (750mA)?

A: The NTZD3154NT1G represents a different die design from onsemi with different thermal and electrical characteristics. The 540mA rating reflects the maximum continuous current at specified thermal conditions. Applications requiring 750mA operation must verify thermal performance with this part through detailed thermal analysis.

Q: Is the PMDT290UNE,115 suitable for automotive applications?

A: The PMDT290UNE,115 carries AEC-Q101 automotive qualification, indicating compliance with automotive reliability standards. However, the part is classified as Not For New Designs, restricting its use to legacy product support and maintenance applications.

Q: What does the gate charge (Qg) parameter indicate for substitution purposes?

A: Gate charge represents the total charge required to switch the MOSFET from off to on state. Lower gate charge values reduce switching losses and enable faster switching speeds. The SIX3134KA-TP (0.8 nC) exhibits significantly lower gate charge than the SIX3134K-TP (20 nC), resulting in improved switching efficiency.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original SIX3134K-TP specification.

Q: Can the FDY3000NZ be used as a direct replacement?

A: The FDY3000NZ is electrically compatible but carries Last Time Buy status, indicating the manufacturer has ceased production and existing inventory is limited. This part is not suitable for new designs or long-term production requirements.

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