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Diodes Incorporated BSS138WQ-13-F
- Part No.:
- BSS138WQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- SC-70, SOT-323
- Datasheet:
-
BSS138WQ-13-F.pdf
- Description:
- BSS FAMILY SOT323 T&R 10K
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
BSS138WQ-13-F from Diodes Incorporated is an AEC-Q101 qualified 50V N-channel enhancement-mode MOSFET in SOT323 package, with RDS(ON) = 1.2 Ω (typ) at VGS = 10 V, ID = 0.22 A, and low gate threshold voltage (0.5–1.5 V). It serves as a compact, automotive-grade load switch or signal-level power control device in motor drivers and power management circuits.
For engineers reviewing the BSS138WQ-13-F datasheet, BSS138WQ-13-F pinout, BSS138WQ-13-F application, or BSS138WQ-13-F equivalent, key selection criteria include its AEC-Q101 qualification, low 1.2 Ω on-resistance at 10 V drive, fast switching (tF = 14 ns), SOT323 footprint compatibility, and thermal resistance of 226 °C/W under 1-inch² copper pad conditions.
Technical Context
This discrete MOSFET operates in enhancement mode with a nominal VGS(TH) of 1.0 V and supports gate drive voltages up to ±20 V. Its low input capacitance (Ciss = 48 pF) and fast turn-off delay (tD(OFF) = 43 ns) enable efficient high-frequency switching in space-constrained automotive subsystems.
The integrated body diode exhibits VSD = 0.8–1.2 V at IS = 0.2 A and tRR = 17.6 ns, supporting bidirectional current handling in flyback or reverse-polarity protection configurations without external diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 50 V - Maximum drain-source blocking voltage for 12 V/24 V automotive rail switching |
| RDS(ON) | 1.2 Ω (typ) @ VGS = 10 V, ID = 0.22 A - Enables <100 mW conduction loss at rated current |
| VGS(TH) | 0.5–1.5 V - Ensures reliable turn-on with 3.3 V or 5 V logic-level microcontrollers |
| Ciss | 48 pF - Low gate charge (Qg = 1.5 nC) reduces driver power and EMI during switching |
| tF | 14 ns - Supports >5 MHz PWM operation in compact DC-DC or LED dimming stages |
| PD | 0.5 W (1-inch² copper pad) - Sustains continuous 0.22 A load at +70 °C ambient without derating |
| TJ Range | −55 to +150 °C - Validated for under-hood automotive environments per AEC-Q101 stress testing |
Pinout & Package
Package: SOT323 - Surface-mount plastic package with matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rated molding compound, weight ≈ 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Source) | Current return path for N-channel conduction | Connected to system ground or low-side reference; internal connection to body diode cathode |
| 2 (Gate) | Control terminal for channel formation | High-impedance input requiring <100 nA leakage; sensitive to ESD but compatible with standard logic drivers |
| 3 (Drain) | Power output terminal | Connected to load or higher potential rail; handles full 50 V blocking and pulsed 1 A current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use with PPAP support and IATF 16949 manufacturing |
| Low RDS(ON) at 10 V | 1.2 Ω typ enables efficient 0.22 A switching with minimal self-heating in SOT323 |
| Low VGS(TH) | 0.5–1.5 V range ensures robust turn-on with 3.3 V MCU GPIOs without level-shifting |
| Fast switching | tD(OFF) = 43 ns and tF = 14 ns reduce transition losses in high-frequency power stages |
| Green packaging | Halogen- and antimony-free, RoHS 3 compliant, lead-free plating per MIL-STD-202 |
Applications
| Motor Control Interface | Automotive Power Sequencing |
|---|---|
|
Use Scenario: Driving small brushed DC motors (e.g., HVAC actuators, mirror adjusters) in 12 V vehicle systems. IC Role / Device Role / Timing Role: Low-side load switch controlled by MCU PWM output. Use Value: 1.2 Ω RDS(ON) limits I²R loss to <60 mW at 0.22 A, enabling direct MCU drive without external gate driver. |
Use Scenario: Enabling/disabling sub-system power rails (e.g., infotainment USB port, sensor cluster) during ignition state transitions. IC Role / Device Role / Timing Role: Controlled power switch with fast turn-off (tF = 14 ns) to prevent backfeed during rail sequencing. Use Value: AEC-Q101 qualification and −55 to +150 °C operation ensure reliability across cold cranking and hot soak conditions. |
| LED Backlight Dimming | Reverse Polarity Protection |
|
Use Scenario: PWM-controlled current sink for instrument cluster or center console LED arrays. IC Role / Device Role / Timing Role: High-speed N-channel switch modulating LED current at >1 kHz. Use Value: Ciss = 48 pF and Qg = 1.5 nC minimize gate drive energy, reducing MCU GPIO loading and EMI. |
Use Scenario: Protecting downstream electronics from battery misconnection in telematics modules. IC Role / Device Role / Timing Role: Low-loss series pass element with integrated body diode used in ideal diode configuration. Use Value: VSD = 0.8–1.2 V at 0.2 A provides lower forward drop than Schottky alternatives, improving efficiency in 12 V systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel low-voltage MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NX3008NBK,115 (Nexperia) | RDS(ON) = 1.4 Ω @ VGS = 4.5 V; VGS(TH) = 0.5–1.1 V; SOT323 package | Optimized for 3.3 V logic drive; slightly higher RDS(ON) at 10 V but tighter VGS(TH) distribution | Prefer when driving from 3.3 V MCU with minimal gate voltage margin |
| DMN10H260SFD-13 (Diodes Inc.) | RDS(ON) = 0.26 Ω @ VGS = 10 V; SOT23-3 package; not AEC-Q101 qualified | Lower on-resistance but larger footprint and no automotive qualification | Prefer for non-automotive industrial applications requiring <0.3 Ω conduction loss |
Compared with NX3008NBK,115 and DMN10H260SFD-13, the BSS138WQ-13-F uniquely combines AEC-Q101 qualification, SOT323 size, and 1.2 Ω RDS(ON) at 10 V-making it optimal for cost-sensitive, space-constrained automotive signal-switching where qualification and footprint are mandatory.
Availability
BSS138WQ-13-F is available at Aetrix Electronics and suitable for automotive motor control, power sequencing, and LED dimming applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for Tier-1 OEM programs.
Supply support for BSS138WQ-13-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and consumer markets with IATF 16949-certified facilities.
The BSS138WQ belongs to Diodes' AEC-Q101-qualified discrete MOSFET product line, engineered specifically for automotive signal- and power-switching applications demanding robustness, small footprint, and PPAP-ready documentation.
FAQ
Is BSS138WQ-13-F suitable for 3.3 V logic-level gate drive?
Yes. With a gate threshold voltage range of 0.5–1.5 V and guaranteed turn-on at VGS = 3.3 V, the BSS138WQ-13-F delivers RDS(ON) ≤ 3.5 Ω at ID = 0.22 A under 3.3 V drive, making it compatible with standard 3.3 V microcontrollers without level shifters.
What is the maximum continuous drain current at +85 °C ambient?
At TA = +85 °C, the maximum continuous drain current is 0.18 A, derived from thermal derating using RθJA = 226 °C/W (1-inch² pad) and PD = 0.5 W, ensuring junction temperature remains below 150 °C with 0.5 W dissipation.
Does BSS138WQ-13-F include integrated ESD protection?
No. The BSS138WQ-13-F does not integrate dedicated ESD protection circuitry. Its gate oxide is rated for ±20 V VGSS, but external TVS or RC filtering is recommended in high-noise automotive environments per AEC-Q101 system-level robustness guidelines.
Can BSS138WQ-13-F replace BSS138 in existing designs?
Yes, with qualification. The BSS138WQ-13-F shares identical SOT323 pinout and electrical specs with the commercial BSS138 but adds AEC-Q101 qualification, PPAP capability, and enhanced process controls-requiring validation only for automotive temperature and reliability requirements.
BSS138WQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 50 V
- Current - Continuous Drain (Id) @ 25°C:
- 280mA (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 3.5Ohm @ 220mA, 10V
- Vgs(th) (Max) @ Id:
- 1.5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 1.5 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 48 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 400mW (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BSS138WQ-13-F FAQ
1.How can I place an order for BSS138WQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BSS138WQ-13-F 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 BSS138WQ-13-F reliable?
The price and inventory of BSS138WQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSS138WQ-13-F is usually 5 days.
3.What payment methods are accepted for BSS138WQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSS138WQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BSS138WQ-13-F?
BSS138WQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BSS138WQ-13-F 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 BSS138WQ-13-F?
For technical support, including BSS138WQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSS138WQ-13-F requirements.
6.How does Aetrix verify that BSS138WQ-13-F is sourced from the original manufacturer or authorized distributors?
All BSS138WQ-13-F 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 BSS138WQ-13-F meets industry standards.
7.What is the process for return or replacement of BSS138WQ-13-F?
All BSS138WQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with BSS138WQ-13-F, 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 BSS138WQ-13-F part is unused and in its original packaging.
Return procedure for BSS138WQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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