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Nexperia USA Inc. BSS138BKSH
- Part No.:
- BSS138BKSH
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FET, MOSFET Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BSS138BKSH.pdf
- Description:
- MOSFET 2N-CH 60V 0.32A 6TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,436
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Product details
Overview
BSS138BKSH from Nexperia is a dual N-channel enhancement-mode Trench MOSFET in SOT363 (SC-88) package, rated for 60 V drain-source voltage, 320 mA continuous drain current per transistor, and 1.0 Ω typical RDS(on) at VGS = 10 V. It serves as a low-side load switch or high-speed line driver in compact automotive and industrial control modules.
For engineers reviewing the BSS138BKSH datasheet, BSS138BKSH pinout, BSS138BKSH application, or BSS138BKSH equivalent, this part supports logic-level drive (VGS(th) = 0.48–1.6 V), delivers fast switching (td(on) = 5 ns, tf = 20 ns), and meets AEC-Q101 qualification for automotive reliability - critical for space-constrained relay drivers and digital I/O interface circuits.
Technical Context
This dual MOSFET integrates two independent N-channel channels in a single 6-pin SOT363 package, with isolated source, gate, and drain terminals enabling independent control of each transistor. Its Trench MOSFET architecture ensures low gate charge (QG(tot) = 0.6 nC) and low output capacitance (Coss = 7 pF), supporting high-frequency switching up to several MHz in digital signal routing.
The device features integrated ESD protection (HBM 1.5 kV), operates across –55 °C to +150 °C junction temperature, and maintains stable RDS(on) up to 150 °C (2.0–3.2 Ω). Its logic-level compatibility allows direct interfacing with 3.3 V and 5 V microcontrollers without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 60 V - Supports rail voltages up to 48 V systems with margin for transients. |
| ID (per transistor) | 320 mA @ Tamb = 25 °C - Sufficient for driving small relays, LEDs, or logic-level loads. |
| RDS(on) | 1.0 Ω typ @ VGS = 10 V - Enables <100 mW conduction loss at 320 mA, minimizing thermal rise on FR4 PCB. |
| VGS(th) | 0.48–1.6 V - Ensures reliable turn-on with 3.3 V GPIOs; sub-1 V threshold enables ultra-low-voltage control. |
| QG(tot) | 0.6 nC - Reduces gate drive power and speeds up switching transitions in high-frequency PWM applications. |
| ESD Rating | 1.5 kV HBM - Provides robust handling during board assembly and field operation without external protection. |
| Tj Range | –55 °C to +150 °C - Validated for under-hood automotive environments and industrial temperature cycling. |
Pinout & Package
SOT363 (SC-88 / TSSOP6) plastic surface-mount package: 1.35 mm × 2.2 mm footprint, 0.65 mm pitch, 1.15 mm height, optimized for high-density PCB layouts and automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S1 | Source terminal of transistor TR1 - connects to system ground or low-side return path. |
| 2 | G1 | Gate terminal of transistor TR1 - accepts logic-level control signal; requires no external pull-down if driven actively. |
| 3 | D2 | Drain terminal of transistor TR2 - routes switched load current to VCC or higher-potential node. |
| 4 | S2 | Source terminal of transistor TR2 - electrically isolated from S1; enables dual independent low-side switches. |
| 5 | G2 | Gate terminal of transistor TR2 - independently controllable; supports dual-channel sequencing or redundancy. |
| 6 | D1 | Drain terminal of transistor TR1 - connects to load (e.g., relay coil or LED anode) referenced to positive rail. |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level gate drive | Operates fully enhanced down to 2.5 V VGS, eliminating need for gate drivers in 3.3 V MCU designs. |
| Trench MOSFET technology | Delivers 30% lower RDS(on) and 40% lower QG vs. planar equivalents, improving efficiency in battery-powered devices. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces. |
| ESD protection | 1.5 kV HBM rating reduces risk of field failure during handling or in noisy industrial environments. |
| Thermal performance | Rth(j-a) = 340 K/W (per transistor, 1 cm² drain pad) enables >250 mA continuous operation at 70 °C ambient without heatsinking. |
Applications
| Automotive Relay Driver | Industrial I/O Expansion |
|---|---|
Use Scenario: Driving 12 V/24 V electromagnetic relays in vehicle body control units (BCUs). IC Role / Device Role / Timing Role: Low-side switch controlling relay coil current; handles inductive kickback via internal body diode. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime; 60 V rating absorbs load dump spikes up to 58 V. |
Use Scenario: Adding programmable digital outputs to PLC I/O modules using 3.3 V FPGA or ARM Cortex-M controllers. IC Role / Device Role / Timing Role: Dual-channel level-translating load switch enabling independent control of two 5 V/24 V field devices. Use Value: Logic-level compatibility eliminates external level shifters; SOT363 footprint saves >40% board area vs. SO-8 dual MOSFETs. |
| USB-C Port Power Switch | High-Speed Data Line Protection |
Use Scenario: Controlling VBUS power delivery to USB-C receptacles in docking stations and monitors. IC Role / Device Role / Timing Role: Low-RDS(on) load switch enabling <10 mΩ effective on-resistance when paralleled; supports USB PD 3.0 current profiles. Use Value: 320 mA per channel supports up to 3 A total with derating; fast turn-off (tf = 20 ns) limits fault energy during short-circuit events. |
Use Scenario: Protecting high-speed UART, SPI, or I²C lines from ESD and overvoltage in portable medical devices. IC Role / Device Role / Timing Role: Bidirectional clamping switch configured as active-low enable for data line isolation during hot-plug events. Use Value: 7 pF Coss minimizes signal distortion at 10 Mbps; 1.5 kV HBM rating exceeds IEC 61000-4-2 Level 4 requirements. |
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 |
|---|---|---|---|
| DMN2004LK-7 | Higher VDS (20 V), lower RDS(on) (0.45 Ω), but not AEC-Q101 qualified. | Optimized for consumer portables; lacks automotive stress test validation. | Select only for non-automotive, low-voltage (<12 V) applications where qualification is not required. |
| FDMA1023NZ | Same SOT363 package, 60 V rating, but higher RDS(on) (1.4 Ω typ) and no AEC-Q101 certification. | Targeted at cost-sensitive industrial controls; unqualified for automotive use cases. | Acceptable for replacement in legacy designs where AEC-Q101 is not mandated and thermal margin exists. |
Compared with BSS138BKSH, DMN2004LK-7 offers better conduction efficiency below 12 V but lacks automotive qualification, while FDMA1023NZ matches voltage rating and footprint but trades off 40% higher RDS(on) and no AEC-Q101 assurance - making BSS138BKSH the sole choice for safety-critical or temperature-rigorous deployments.
Availability
BSS138BKSH is available at Aetrix Electronics and suitable for automotive relay drivers, industrial I/O expansion modules, and USB-C power delivery circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BSS138BKSH 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-grade MOSFETs and ESD-protected components.
BSS138BKSH belongs to Nexperia's AEC-Q101-qualified TrenchMOS family, engineered specifically for space-constrained, high-reliability switching in automotive body electronics and industrial control systems.
FAQ
Is BSS138BKSH pin-compatible with the original BSS138 series?
Yes - BSS138BKSH retains identical SOT363 pinout (S1-G1-D2-S2-G2-D1), same marking code LG%, and matches all electrical specifications of BSS138BKS. The 'H' suffix denotes tape-and-reel packaging per EIA-481 standard, with no functional or parametric deviation.
Can BSS138BKSH replace a single-channel MOSFET like BSS138 in existing designs?
No - BSS138BKSH contains two independent N-channel MOSFETs in one package; replacing a single BSS138 requires careful PCB layout revision to isolate unused pins and avoid floating gates. Unused channel must be tied G→S or actively driven to prevent unintended conduction.
What is the maximum safe operating frequency for PWM switching with BSS138BKSH?
Based on td(on) = 5 ns, tf = 20 ns, and QG = 0.6 nC, BSS138BKSH supports clean switching up to 5 MHz with appropriate gate drive strength (≤10 Ω series resistance). Above 2 MHz, layout parasitics and gate drive capability become limiting factors.
Does BSS138BKSH include body diodes, and are they rated for reverse recovery?
Yes - each channel includes an inherent source-drain body diode with VSD = 0.7–1.2 V at 300 mA. However, it is not rated for fast reverse recovery (no trr specified); use only in non-synchronous, low-dI/dt applications like relay driving or DC load switching - not in flyback or synchronous rectifier topologies.
BSS138BKSH 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:
- Logic Level Gate
- Drain to Source Voltage (Vdss):
- 60V
- Current - Continuous Drain (Id) @ 25°C:
- 320mA (Ta)
- Rds On (Max) @ Id, Vgs:
- 1.6Ohm @ 320mA, 10V
- Vgs(th) (Max) @ Id:
- 1.6V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 0.7nC @ 4.5V
- Input Capacitance (Ciss) (Max) @ Vds:
- 56pF @ 10V
- Power - Max:
- 445mW
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BSS138BKSH FAQ
1.How can I place an order for BSS138BKSH through Aetrix?
Please submit a Request for Quotation (RFQ) for BSS138BKSH 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 BSS138BKSH reliable?
The price and inventory of BSS138BKSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSS138BKSH is usually 5 days.
3.What payment methods are accepted for BSS138BKSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSS138BKSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BSS138BKSH?
BSS138BKSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BSS138BKSH 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 BSS138BKSH?
For technical support, including BSS138BKSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSS138BKSH requirements.
6.How does Aetrix verify that BSS138BKSH is sourced from the original manufacturer or authorized distributors?
All BSS138BKSH 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 BSS138BKSH meets industry standards.
7.What is the process for return or replacement of BSS138BKSH?
All BSS138BKSH units undergo pre-shipment inspection (PSI). If there is an issue with BSS138BKSH, 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 BSS138BKSH part is unused and in its original packaging.
Return procedure for BSS138BKSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BSS138BKSH Tags
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