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Nexperia USA Inc. NX138BKSX
- Part No.:
- NX138BKSX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FET, MOSFET Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
NX138BKSX.pdf
- Description:
- MOSFET 2N-CH 60V 0.21A 6TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:14,914
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Product details
Overview
NX138BKSX from Nexperia is a dual N-channel enhancement-mode Trench MOSFET in SOT363 (SC-88) package, rated for 60 V drain-source voltage, 210 mA continuous drain current per transistor at 25 °C, and 2.1 Ω typical RDS(on) at VGS = 10 V and ID = 200 mA - used as low-side loadswitch or high-speed line driver in compact power management circuits.
For engineers reviewing the NX138BKSX datasheet, NX138BKSX pinout, NX138BKSX application, or NX138BKSX equivalent, this device supports dual independent switching paths with ESD protection >2 kV HBM, fast turn-on/turn-off timing (td(on) = 8 ns, tf = 5 ns), and thermal resistance of 340–440 K/W junction-to-ambient on FR4 PCB.
Technical Context
This dual MOSFET integrates two identical N-channel Trench devices in a single 6-pin TSSOP6 package, sharing no internal connection between channels - each transistor operates independently with isolated source, gate, and drain terminals. Gate threshold voltage is tightly specified at 0.5–1.5 V, enabling reliable logic-level drive from 2.5 V to 5 V microcontrollers.
Its dynamic characteristics include 0.5–0.7 nC total gate charge, 20 pF input capacitance, and 3.1 pF output capacitance at VDS = 30 V, supporting high-frequency switching up to several MHz in low-power DC-DC or signal routing applications without significant Miller effect degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 60 V - maximum blocking voltage per channel; suitable for 24 V industrial bus and 48 V telecom supply rails. |
| RDS(on) | 2.1 Ω typ @ VGS = 10 V, ID = 200 mA - enables <100 mW conduction loss at 200 mA, minimizing self-heating in space-constrained layouts. |
| ID (cont) | 210 mA per transistor @ Tamb = 25 °C - defines steady-state current capability with standard FR4 mounting (1 cm² drain pad). |
| tf / tr | 5 ns / 8 ns - fast edge transitions reduce switching losses and EMI in high-frequency digital load control. |
| QG(tot) | 0.5–0.7 nC - low gate charge allows direct drive from GPIO pins without external buffer, simplifying gate driver design. |
| VGS(th) | 0.5–1.5 V - ensures turn-on with 1.8 V or 3.3 V logic, supporting ultra-low-voltage microcontroller interfaces. |
| ESD HBM | >2 kV - provides robust handling during board assembly and field operation without additional protection circuitry. |
Pinout & Package
SOT363 (SC-88 / TSSOP6) plastic surface-mounted package: 6-lead, 1.35 mm height, 2.2 mm × 1.8 mm footprint, 0.65 mm pitch; designed for reflow soldering with defined land pattern (2.65 mm × 2.35 mm solder mask opening).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S1 | Source terminal of transistor TR1 - connects to ground or low-side return path for first switch. |
| 2 | G1 | Gate terminal of transistor TR1 - accepts logic-level control signal; requires no level-shifting for 3.3 V systems. |
| 3 | D2 | Drain terminal of transistor TR2 - connects to load or signal node switched by second channel. |
| 4 | S2 | Source terminal of transistor TR2 - electrically isolated from S1; enables independent low-side grounding per channel. |
| 5 | G2 | Gate terminal of transistor TR2 - fully decoupled from G1; supports asynchronous dual-channel control. |
| 6 | D1 | Drain terminal of transistor TR1 - routed separately from D2; permits dual independent load connections. |
Key Features
| Feature | Design Value |
|---|---|
| Low threshold voltage | VGS(th) = 0.5–1.5 V enables reliable turn-on from 1.8 V/3.3 V logic without gate boosting. |
| Very fast switching | td(off) = 13 ns and tf = 5 ns minimize dead-time losses in PWM-driven loads. |
| Trench MOSFET technology | Delivers lower RDS(on) per die area than planar MOSFETs, critical for miniaturized SOT363 form factor. |
| ESD protection | ≥2 kV HBM rating eliminates need for external TVS diodes in most handheld and IoT endpoint designs. |
| Thermal performance | Rth(j-sp) = 125–145 K/W allows 860 mW peak dissipation with proper solder-point thermal relief. |
Applications
| Relay Driver | High-Speed Line Driver |
|---|---|
Use Scenario: Replacing electromechanical relays in PLC I/O modules and sensor interface cards where mechanical wear and bounce are unacceptable. IC Role / Device Role / Timing Role: Dual low-side switch controlling coil current for two independent relay circuits with simultaneous or staggered actuation. Use Value: Eliminates contact arcing and extends system lifetime; 210 mA per channel supports standard 5 V/12 V relay coils with margin. |
Use Scenario: Driving differential or single-ended data lines in industrial fieldbus nodes (e.g., RS-485 stubs, CAN stub termination control). IC Role / Device Role / Timing Role: Fast-switching loadswitch enabling/disabling termination resistors or bias networks on communication lines. Use Value: 5 ns fall time ensures clean signal edges up to 10 Mbps; dual configuration supports active-high/active-low termination control. |
| Low-Side Loadswitch | Switching Circuits |
Use Scenario: Power sequencing and fault-isolation in battery-powered medical sensors and portable test equipment. IC Role / Device Role / Timing Role: Independent enable control for two separate subsystems (e.g., analog front-end and digital controller) from a shared Li-ion rail. Use Value: 2.1 Ω RDS(on) limits voltage drop to <420 mV at 200 mA, preserving headroom for 3.3 V LDOs downstream. |
Use Scenario: Configurable logic-level translation and signal routing in FPGA I/O banks and MCU peripheral multiplexing. IC Role / Device Role / Timing Role: Bidirectional pass-gate replacement using source-drain symmetry and low VGS(th). Use Value: Sub-1 V threshold allows use with 1.8 V core logic; 20 pF Ciss minimizes capacitive loading on high-speed data paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual N-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN2004LKQ-7 | 40 V VDS, 340 mA ID, 1.2 Ω RDS(on) @ 4.5 V - higher current but lower voltage rating. | Not suitable for 48 V bus applications; better for 3.3 V/5 V logic-supplied loads requiring higher current. | Select when higher continuous current (>250 mA) is needed at ≤40 V, and lower RDS(on) at 4.5 V drive is critical. |
| NTJD4152PZ | 60 V VDS, 220 mA ID, 2.5 Ω RDS(on) @ 4.5 V - slightly higher on-resistance, same package. | Compatible pinout and voltage rating; less efficient at 3.3 V drive due to higher VGS(th) (1.0–2.5 V). | Choose if sourcing flexibility across distributors is prioritized and 2.5 Ω RDS(on) at 4.5 V is acceptable. |
Compared with DMN2004LKQ-7 and NTJD4152PZ, NX138BKSX offers the lowest VGS(th) range (0.5–1.5 V) and best ESD robustness (>2 kV HBM), making it optimal for ultra-low-voltage, noise-sensitive, or high-reliability portable designs where gate drive margin and static immunity are critical.
Availability
NX138BKSX is available at Aetrix Electronics and suitable for relay drivers, high-speed line drivers, low-side loadswitches, and switching circuits requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for NX138BKSX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
NX138BKSX belongs to Nexperia's TrenchMOS small-signal dual MOSFET product line, engineered for space-constrained, low-power switching applications where logic-level drive, fast response, and robust ESD tolerance are mandatory.
FAQ
What is the maximum continuous drain current per channel at 100 °C ambient temperature?
At Tamb = 100 °C, the maximum continuous drain current per transistor is 135 mA, as specified in Table 4 (Limiting values). This derating reflects thermal constraints of the SOT363 package on standard FR4 PCB without enhanced copper pour or airflow.
Can NX138BKSX be used with 1.8 V GPIO for full turn-on?
Yes - with VGS(th) min = 0.5 V and typical RDS(on) = 2.6 Ω at VGS = 2.5 V and ID = 75 mA, the device achieves usable conduction at 1.8 V drive. However, RDS(on) rises to ~5 Ω, limiting current to ~100 mA before excessive heating occurs.
Is the source-drain diode body diode rated for reverse recovery in switching applications?
The source-drain diode has VSD = 0.9–1.2 V at IS = 200 mA and exhibits no specified reverse recovery time (trr) in the datasheet. It is intended for clamping and freewheeling only - not for high-frequency synchronous rectification.
Does NX138BKSX have any integrated gate protection features beyond ESD rating?
No integrated gate zener or series resistance is specified. The >2 kV HBM ESD rating is achieved via process-level protection; external 10 kΩ gate resistors are recommended for noisy environments, and gate-source capacitors (<100 pF) may be added for RF immunity in sensitive analog-adjacent layouts.
NX138BKSX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- MOSFET (Metal Oxide)
- Configuration:
- 2 N-Channel (Dual)
- FET Feature:
- -
- Drain to Source Voltage (Vdss):
- 60V
- Current - Continuous Drain (Id) @ 25°C:
- 210mA (Ta)
- Rds On (Max) @ Id, Vgs:
- 3.5Ohm @ 200mA, 10V
- Vgs(th) (Max) @ Id:
- 1.5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 0.7nC @ 10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 20pF @ 30V
- Power - Max:
- 320mW
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
NX138BKSX FAQ
1.How can I place an order for NX138BKSX through Aetrix?
Please submit a Request for Quotation (RFQ) for NX138BKSX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for NX138BKSX reliable?
The price and inventory of NX138BKSX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NX138BKSX is usually 5 days.
3.What payment methods are accepted for NX138BKSX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NX138BKSX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NX138BKSX?
NX138BKSX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NX138BKSX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for NX138BKSX?
For technical support, including NX138BKSX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NX138BKSX requirements.
6.How does Aetrix verify that NX138BKSX is sourced from the original manufacturer or authorized distributors?
All NX138BKSX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NX138BKSX meets industry standards.
7.What is the process for return or replacement of NX138BKSX?
All NX138BKSX units undergo pre-shipment inspection (PSI). If there is an issue with NX138BKSX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The NX138BKSX part is unused and in its original packaging.
Return procedure for NX138BKSX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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