My Inquiry
My Account
onsemi NSS20201LT1G
- Part No.:
- NSS20201LT1G
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
NSS20201LT1G.pdf
- Description:
- TRANS NPN 20V 2A SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,646
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NSS20201LT1G from onsemi is a 20 V, 4.0 A NPN bipolar junction transistor in SOT-23 package, featuring ultra-low VCE(sat) (as low as 4 mV at IC = 0.1 A), high DC current gain (hFE ≥ 200), and AEC-Q101 qualification. It serves as a high-efficiency switching element in low-voltage power management circuits, especially in portable battery-powered DC–DC converters.
For engineers reviewing the NSS20201LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 20 V VCEO, 2.0 A continuous collector current, 270 °C/W RJA (FR-4, 100 mm²), SOT-23 pin configuration, and suitability for automotive airbag deployment and motor control in disc drives.
Technical Context
This NPN transistor operates in saturation mode with VCE(sat) values tightly specified across four current levels (0.1 A to 2.0 A) and corresponding base drive conditions, enabling precise low-loss switching. Its fT of 150 MHz supports high-speed switching up to ~100 ns rise/fall times under pulsed 750 mA load.
The device exhibits stable hFE ≥ 200 across IC = 10 mA to 2.0 A at VCE = 2.0 V, and maintains VBE(sat) ≤ 0.900 V at IC = 1.0 A / IB = 10 mA - enabling direct drive from PMU outputs without external amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20 V - Maximum safe collector-emitter voltage before breakdown; defines upper rail limit in 12 V/15 V systems. |
| IC (continuous) | 2.0 A - Continuous current handling capability; sets thermal design baseline for PCB copper area (100 mm² FR-4). |
| VCE(sat) @ IC=1.0 A | 0.037 V (typ) - Ultra-low saturation voltage reduces conduction loss to <15 mW at 1 A, critical for efficiency in portable power stages. |
| hFE @ IC=1.0 A | 200 (min) - High, stable current gain enables low-base-drive-current operation (e.g., 5 mA base for 1 A collector), easing MCU/PWM driver loading. |
| fT | 150 MHz - Transition frequency supporting fast switching; ensures usable gain at 100 MHz for RF-coupled or high-frequency PWM applications. |
| RJA (100 mm²) | 270 °C/W - Thermal resistance defining junction-to-ambient temperature rise; requires minimal heatsinking in compact layouts. |
| ESD Rating | HBM Class 3B - Withstands ≥8 kV human-body-model ESD, suitable for assembly in non-ESD-controlled environments. |
Pinout & Package
SOT-23 (TO-236) package, 2.90 × 1.30 × 1.00 mm, 3-pin surface-mount, Pb-free, RoHS compliant. Marking: "201" (per datasheet Style 6).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input node; accepts low-current drive (e.g., 10 mA) to switch up to 2 A collector current with predictable hFE. |
| 2 | Emitter | Reference terminal for base-emitter junction; tied to ground or low-side return path in common-emitter configurations. |
| 3 | Collector | High-current output node; connects to load or switching node (e.g., DC–DC converter inductor or motor winding). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including airbag deployment and instrument cluster; supports PPAP documentation requirements. |
| Ultra-low VCE(sat) | As low as 4 mV at IC = 0.1 A - minimizes I²R losses in battery-sensitive applications like MP3 players and digital cameras. |
| High hFE linearity | hFE ≥ 200 across IC = 10 mA to 2.0 A - enables consistent gain behavior in both switching and analog amplifier roles. |
| Thermal robustness | Junction temperature range −55 °C to +150 °C - supports operation in under-hood automotive and industrial ambient conditions. |
| Pb-free & RoHS compliant | Halogen-free/BFR-free construction - meets global environmental compliance mandates without derating or process change. |
Applications
| DC–DC Converter Switching Stage | Automotive Airbag Deployment Circuit |
|---|---|
|
Use Scenario: Step-down (buck) converter in smartphone power management ICs delivering regulated 3.3 V/1.8 V rails from single-cell Li-ion battery. IC Role / Device Role / Timing Role: Low-side synchronous switch replacing Schottky diode; driven by integrated PWM controller with 10–100 kHz switching frequency. Use Value: VCE(sat) ≤ 37 mV at 1 A reduces conduction loss by >60% vs. typical 0.3 V diode drop, extending battery runtime. |
Use Scenario: High-reliability trigger switch activating pyrotechnic squib in vehicle frontal collision detection system. IC Role / Device Role / Timing Role: Final-stage current amplifier converting low-energy MCU GPIO pulse into 2 A squib firing current within <1 ms. Use Value: AEC-Q101 qualification and −55 °C to +150 °C operation ensure functional safety under extreme thermal cycling and vibration. |
| Portable Device Motor Control | Disk Drive Spindle Driver |
|
Use Scenario: Low-voltage brushed DC motor driver in Bluetooth headset or smart pen requiring bidirectional torque control. IC Role / Device Role / Timing Role: Single-ended NPN switch in H-bridge half-bridge leg; controlled via PWM from microcontroller GPIO. Use Value: hFE ≥ 200 allows direct drive from 3.3 V MCU outputs (IOH/IOL ≤ 20 mA), eliminating gate-driver ICs and reducing BOM count. |
Use Scenario: Spindle motor start-up and speed regulation in 2.5″ HDDs powered from 5 V rail with tight thermal envelope. IC Role / Device Role / Timing Role: High-current linear amplifier stage modulating motor current based on feedback from tachometer signal. Use Value: Linear gain (Beta) stability across temperature ensures accurate current regulation without closed-loop compensation complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBT2222ALT1G | Lower VCEO (40 V), higher VCE(sat) (0.3 V typ @ 500 mA), no AEC-Q101 qualification. | Not suitable for automotive safety-critical functions; acceptable for general-purpose 5 V logic-level switching. | Select when cost sensitivity outweighs automotive compliance and ultra-low saturation voltage needs. |
| ZXTN2020ZTA | Higher VCEO (30 V), lower RJA (200 °C/W), but VCE(sat) = 0.12 V @ 1 A - 3× higher than NSS20201LT1G. | Better thermal performance on large copper pours; less efficient in battery-constrained applications. | Prefer when board space allows larger thermal pad and system prioritizes thermal margin over millivolt-level efficiency gains. |
Compared with MMBT2222ALT1G and ZXTN2020ZTA, NSS20201LT1G uniquely delivers sub-40 mV VCE(sat) at 1 A while maintaining AEC-Q101 qualification - making it the only choice among the three for automotive airbag triggers and high-efficiency portable DC–DC converters where every millivolt of conduction loss matters.
Availability
NSS20201LT1G is available at Aetrix Electronics and suitable for DC–DC converters, automotive airbag systems, and portable motor control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for NSS20201LT1G 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
onsemi is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NSS20201LT1G belongs to onsemi's e2PowerEdge family - engineered specifically for low-voltage, high-speed switching in battery-powered and automotive systems where ultra-low VCE(sat) and high current gain are essential.
FAQ
What is the maximum continuous collector current rating for NSS20201LT1G?
The NSS20201LT1G has a maximum continuous collector current (IC) rating of 2.0 A at TA = 25 °C with 100 mm² FR-4 copper area. This rating assumes proper thermal management; derating applies above 25 °C at 3.7 mW/°C. The device supports peak currents up to 4.0 A in pulsed operation per datasheet Note 3.
Is NSS20201LT1G suitable for automotive applications?
Yes, NSS20201LT1G is AEC-Q101 qualified and PPAP capable, explicitly validated for automotive use cases including airbag deployment and instrument cluster modules. Its −55 °C to +150 °C operating range and robust ESD (HBM Class 3B) meet stringent automotive reliability requirements.
What is the typical VCE(sat) of NSS20201LT1G at 1.0 A collector current?
The typical VCE(sat) of NSS20201LT1G at IC = 1.0 A and IB = 0.100 A is 0.037 V, with a maximum of 0.050 V under the same conditions. This ultra-low saturation voltage is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet NSS20201L/D Rev. 7.
Which package type does NSS20201LT1G use, and what are its dimensions?
NSS20201LT1G uses the SOT-23 (TO-236) package, case outline 318, style 6. Its physical dimensions are 2.90 mm × 1.30 mm × 1.00 mm with 1.90 mm lead pitch. The marking "201" appears on the top surface, and the device is Pb-free and RoHS compliant.
Does NSS20201LT1G have a guaranteed minimum DC current gain (hFE)?
Yes, NSS20201LT1G guarantees a minimum hFE of 200 across multiple operating points: at IC = 10 mA, 500 mA, 1.0 A, and 2.0 A, all measured at VCE = 2.0 V and TA = 25 °C. This stable gain enables predictable base drive design across wide current ranges.
NSS20201LT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 200mA, 2A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 500mA, 2V
- Power - Max:
- 460 mW
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
NSS20201LT1G FAQ
1.How can I place an order for NSS20201LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NSS20201LT1G 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 NSS20201LT1G reliable?
The price and inventory of NSS20201LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSS20201LT1G is usually 5 days.
3.What payment methods are accepted for NSS20201LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSS20201LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NSS20201LT1G?
NSS20201LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NSS20201LT1G 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 NSS20201LT1G?
For technical support, including NSS20201LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSS20201LT1G requirements.
6.How does Aetrix verify that NSS20201LT1G is sourced from the original manufacturer or authorized distributors?
All NSS20201LT1G 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 NSS20201LT1G meets industry standards.
7.What is the process for return or replacement of NSS20201LT1G?
All NSS20201LT1G units undergo pre-shipment inspection (PSI). If there is an issue with NSS20201LT1G, 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 NSS20201LT1G part is unused and in its original packaging.
Return procedure for NSS20201LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NSS20201LT1G Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
