SI3134KL3-TP N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The SI3134KL3-TP is an N-Channel MOSFET manufactured by Micro Commercial Co, designed for surface mount applications in the DFN1006-3 package. This device features a 20V drain-to-source voltage rating with 750mA continuous drain current capability and 100mW power dissipation. The part is classified as obsolete, making identification of active equivalent and substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

SI3134KL3-TP

Micro Commercial CoIn Stock: 789SI3134KL3-TP Datasheet

Current PartRFQ

SI3134KL3A-TP

Micro Commercial CoIn Stock: 10762SI3134KL3A-TP Datasheet

MFR RecommendedRFQ

NTNS3164NZT5G

onsemiIn Stock: 40439NTNS3164NZT5G Datasheet

MFR RecommendedRFQ

NTNS3166NZT5G

onsemiIn Stock: 8738NTNS3166NZT5G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SI3134KL3-TP is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• Drain to Source Voltage (Vdss): 20V minimum
• Continuous Drain Current (Id): 750mA or greater
• Gate Threshold Voltage (Vgs(th)): 1.1V or less @ 250µA
• Maximum Gate Voltage (Vgs): ±12V or greater
• Operating Temperature Range: -55°C to 150°C or wider
• RoHS3 Compliance: Required
• MSL Rating: 1 (Unlimited)

Substitute Parts Identified:

Group 1 - Direct Functional Equivalent (Active Status) SI3134KL3A-TP (Micro Commercial Co) meets all primary criteria with enhanced specifications including higher power dissipation (900mW vs. 100mW) and improved Rds On performance (300mOhm @ 500mA, 4.5V). This part maintains identical package compatibility (DFN1006-3) and is currently in active production status with substantial inventory availability.

Group 2 - Partial Parameter Compatibility (Active Status) NTNS3164NZT5G (onsemi) and NTNS3166NZT5G (onsemi) are N-Channel MOSFETs with 20V Vdss rating in SOT-883 package. These parts exhibit reduced continuous drain current specifications (361mA for NTNS3164NZT5G) compared to the original SI3134KL3-TP, limiting their application scope to lower current designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SI3134KL3A-TP

The SI3134KL3A-TP is the preferred substitute for the obsolete SI3134KL3-TP. This part is manufactured by the same supplier (Micro Commercial Co), maintains identical package geometry (DFN1006-3), and exceeds the original specifications in critical performance areas. The SI3134KL3A-TP is currently in active production status with 10,699 units in stock, ensuring long-term procurement availability. Both parts are ROHS3 compliant with MSL 1 (Unlimited) ratings, supporting equivalent reliability and environmental compliance requirements.

Secondary Recommendation: NTNS3164NZT5G

The NTNS3164NZT5G from onsemi is suitable for applications where continuous drain current requirements do not exceed 361mA. This part maintains the 20V Vdss rating and operates across the same temperature range (-55°C to 150°C). The SOT-883 package is mechanically compatible with the original DFN1006-3 footprint. NTNS3164NZT5G is active in production with 40,400 units available. Selection of this part requires verification that circuit current demands remain within the 361mA specification.

Tertiary Consideration: NTNS3166NZT5G

The NTNS3166NZT5G is available in active production status with 8,681 units in stock. However, critical electrical parameters including Vdss, Id, Rds On, Vgs(th), and operating temperature range are not specified in the provided data. This part cannot be recommended without complete technical documentation.

Frequently Asked Questions (FAQ)

Q1: Why is the SI3134KL3-TP listed as obsolete?

The SI3134KL3-TP is classified as obsolete by the manufacturer. The SI3134KL3A-TP serves as the active production replacement, offering identical functionality with enhanced performance specifications and guaranteed long-term availability.

Q2: Can the SI3134KL3A-TP be used as a direct drop-in replacement?

Yes. The SI3134KL3A-TP is a direct functional equivalent with identical package geometry (DFN1006-3), pinout, and electrical interface. The part exceeds the original specifications in power dissipation (900mW vs. 100mW) and on-resistance performance, making it suitable for direct substitution without circuit redesign.

Q3: What are the key differences between SI3134KL3A-TP and NTNS3164NZT5G?

The primary difference is continuous drain current capability: SI3134KL3A-TP supports 750mA while NTNS3164NZT5G is rated for 361mA. Additionally, SI3134KL3A-TP maintains a maximum gate voltage of ±12V compared to ±8V for NTNS3164NZT5G. Both parts share identical 20V Vdss rating and -55°C to 150°C operating temperature range.

Q4: Are package dimensions compatible between DFN1006-3 and SOT-883?

Both packages are classified as SC-101 or SOT-883 variants with similar ultra-small form factors. However, physical footprint verification is required before PCB layout modification. Consult manufacturer datasheets for precise dimensional specifications.

Q5: Do all substitute parts meet RoHS3 and MSL requirements?

Yes. All identified substitute parts (SI3134KL3A-TP, NTNS3164NZT5G, and NTNS3166NZT5G) are ROHS3 compliant with MSL 1 (Unlimited) ratings, matching the environmental and reliability compliance of the original SI3134KL3-TP.

Q6: Which substitute part should be selected for new designs?

For new designs requiring 750mA continuous drain current, SI3134KL3A-TP is the recommended choice. For applications with current requirements below 361mA, NTNS3164NZT5G provides an alternative from an established manufacturer (onsemi) with substantial inventory availability.

Q7: What is the inventory status for each substitute part?

SI3134KL3A-TP: 10,699 units in stock. NTNS3164NZT5G: 40,400 units in stock. NTNS3166NZT5G: 8,681 units in stock. All parts are available for immediate procurement.