NTLJS4159NT1G Equivalent & Substitute Parts

Part Overview

The NTLJS4159NT1G is an N-Channel MOSFET manufactured by onsemi, rated for 30V drain-to-source voltage with 3.6A continuous drain current at 25°C. The device is housed in a 6-WDFN (2x2) surface mount package with an exposed pad and features 700mW power dissipation capability. This part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

NTLJS4159NT1G

onsemiIn Stock: 872NTLJS4159NT1G Datasheet

Current PartRFQ

NTLJS4114NT1G

onsemiIn Stock: 4839NTLJS4114NT1G Datasheet

SimilarRFQ

PMPB33XN,115

NXP USA Inc.In Stock: 141911PMPB33XN,115 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NTLJS4159NT1G is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-source voltage rating (Vdss) must equal or exceed 30V
• Continuous drain current (Id) must meet or exceed 3.6A at 25°C
• On-resistance (Rds On) characteristics must support the application's power dissipation requirements
• Gate threshold voltage (Vgs(th)) and gate charge (Qg) must be compatible with existing gate drive circuitry
• Operating temperature range must span -55°C to 150°C (TJ)

Mechanical Compatibility Criteria:

• Package type must be surface mount with 6-pin configuration
• Exposed pad design must be maintained for thermal management
• Footprint compatibility with 6-WDFN (2x2) or equivalent DFN packages

Regulatory & Compliance Criteria:

• Moisture sensitivity level (MSL) of 1 or better
• REACH compliance status
• ECCN classification alignment

The substitute parts identified below satisfy these criteria with documented electrical and mechanical equivalence.

Parameter Comparison

Engineering Selection Recommendations

NTLJS4114NT1G (onsemi)

The NTLJS4114NT1G is the primary substitute for the obsolete NTLJS4159NT1G. Both devices share identical electrical specifications across all critical parameters: 30V Vdss, 3.6A continuous drain current, 35mOhm Rds On, and 700mW power dissipation. The NTLJS4114NT1G is housed in the same 6-WDFN (2x2) package with exposed pad, ensuring direct mechanical compatibility and footprint equivalence. The substitute features an active product status with µCool™ series designation, ROHS3 compliance, and REACH unaffected classification. The primary electrical difference is a higher maximum gate voltage rating (±12V versus ±8V) and reduced input capacitance (650 pF versus 1045 pF), both of which provide improved performance margins. This part is the recommended direct replacement with 4806 units in stock.

PMPB33XN,115 (NXP USA Inc.)

The PMPB33XN,115 is an alternative substitute with enhanced electrical performance characteristics. This device maintains the 30V Vdss rating and exceeds the continuous drain current requirement at 4.3A (versus 3.6A). The on-resistance specification of 47mOhm at 4.3A, 4.5V is slightly higher than the original part but remains within acceptable operating margins. The PMPB33XN,115 features significantly improved power dissipation capability at 1.5W (Ta) and 8.3W (Tc), providing thermal performance advantages. The package is DFN1010B-6 (6-XFDFN), which differs from the 6-WDFN footprint and requires PCB layout verification. Gate charge is reduced to 7.6 nC, and input capacitance is 505 pF, both favorable for switching speed. This part is active with 141808 units in stock. Selection of this substitute requires confirmation of mechanical compatibility with existing PCB designs due to package differences.

Selection Criteria Summary:

For direct replacement with identical package and footprint, select NTLJS4114NT1G. For applications requiring enhanced thermal performance and higher current capability with package redesign feasibility, select PMPB33XN,115. Both substitutes maintain the -55°C to 150°C operating temperature range and surface mount configuration of the original part.

Frequently Asked Questions (FAQ)

Q: Can the NTLJS4114NT1G be used as a direct drop-in replacement for the NTLJS4159NT1G?

A: Yes. The NTLJS4114NT1G is electrically and mechanically equivalent to the NTLJS4159NT1G. Both devices feature identical Vdss (30V), Id (3.6A), Rds On (35mOhm), and power dissipation (700mW) specifications. The package type, footprint, and pin configuration are identical (6-WDFN 2x2 with exposed pad). No PCB layout modifications are required.

Q: What are the key differences between NTLJS4114NT1G and PMPB33XN,115?

A: The NTLJS4114NT1G maintains exact electrical equivalence to the original part with identical package. The PMPB33XN,115 offers higher continuous drain current (4.3A versus 3.6A), improved power dissipation (1.5W Ta / 8.3W Tc versus 0.7W), and lower gate charge (7.6 nC versus 13 nC). However, the PMPB33XN,115 uses a DFN1010B-6 package instead of 6-WDFN, requiring PCB footprint verification before selection.

Q: Are there any gate drive circuit compatibility concerns with these substitutes?

A: The NTLJS4114NT1G has a maximum gate voltage rating of ±12V (versus ±8V for the original), providing improved margin. The PMPB33XN,115 also supports ±12V. Both substitutes have lower gate charge (13 nC and 7.6 nC respectively) compared to the original specification, which may reduce gate drive current requirements. Existing gate drive circuits designed for the original part will operate within specification with both substitutes.

Q: What is the impact of reduced input capacitance in the substitute parts?

A: The NTLJS4114NT1G features 650 pF input capacitance (versus 1045 pF), and the PMPB33XN,115 features 505 pF. Reduced input capacitance decreases gate charge requirements and improves switching speed. This results in lower gate drive power dissipation and faster switching transitions, both beneficial for system performance. No circuit modifications are required.

Q: Can the PMPB33XN,115 be used in existing PCB designs without layout changes?

A: The PMPB33XN,115 uses a DFN1010B-6 package, which differs from the 6-WDFN (2x2) package of the original part. PCB footprint, pad layout, and thermal via placement must be verified for compatibility. Direct substitution without layout verification is not recommended. Consult the respective datasheets for detailed package dimensions and thermal management requirements.

Q: What is the product status significance for these substitutes?

A: The NTLJS4159NT1G is classified as obsolete, indicating discontinued production and limited long-term availability. Both NTLJS4114NT1G (active, 4806 units in stock) and PMPB33XN,115 (active, 141808 units in stock) have active product status with confirmed availability, ensuring supply chain continuity for new designs and production support.

Q: Are there regulatory or compliance differences between these parts?

A: The NTLJS4114NT1G is ROHS3 compliant with REACH unaffected status. The PMPB33XN,115 has REACH unaffected status. Both parts have MSL 1 (unlimited) or equivalent moisture sensitivity ratings. All three parts are classified as EAR99 for export control purposes. No compliance barriers exist for substitution.