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onsemi NST489AMT1
- Part No.:
- NST489AMT1
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
NST489AMT1.pdf
- Description:
- TRANS NPN 30V 2A 6-TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,824
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Product details
Overview
NST489AMT1 from onsemi is a high-current NPN silicon switching transistor optimized for load management in portable electronics, featuring 30 V VCEO, 2.0 A continuous IC, and ultra-low 50 mV typical VCE(sat) at IC = 100 mA / IB = 1.0 mA - enabling efficient battery-powered power path control in USB OTG switches and smart battery protection circuits.
For engineers reviewing the NST489AMT1 datasheet, pinout, applications, or equivalent options, this device delivers verified low-saturation performance in TSOP-6 package with automotive-grade AEC-Q101 qualification, making it suitable for space-constrained, thermally sensitive load-switch designs requiring stable DC current gain and fast turn-on/turn-off behavior.
Technical Context
This NPN transistor operates as a single-pole, high-gain, low-VCE(sat) switch with hFE ≥ 200 at IC = 1.0 A and VCE = 5.0 V, supporting robust DC load control up to 3.0 A peak. Its thermal design targets FR-4 PCBs with ≥645 mm² copper area, delivering 1.18 W total dissipation and 106 °C/W RJA under those conditions.
The device uses standard bipolar junction architecture with no integrated base resistors or protection diodes. It exhibits fT = 200–300 MHz, confirming suitability for medium-speed digital switching (≤10 MHz), and maintains VBE(sat) ≤ 1.1 V at IC = 1.0 A, ensuring predictable drive requirements from microcontroller GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V - Supports 5 V to 24 V rail switching without breakdown risk in portable power domains. |
| IC (continuous) | 2.0 A - Enables direct control of moderate-power loads like LED banks or motor drivers without external buffering. |
| VCE(sat) (typ) | 0.05 V @ IC = 0.1 A / IB = 1.0 mA - Minimizes conduction loss and self-heating in always-on load paths. |
| hFE | 200–900 - Ensures reliable saturation with low base drive current (e.g., 10 mA base supports 1 A collector). |
| fT | 200–300 MHz - Validates fast switching capability for PWM-based dimming or enable/disable sequencing up to ~5 MHz. |
| RJA (645 mm² Cu) | 106 °C/W - Allows thermal design margin of ~110 °C rise at 1.18 W dissipation, compatible with compact handheld PCB layouts. |
Pinout & Package
Package: TSOP-6 (Case 318G), 3.00 × 1.50 × 0.90 mm, 0.95 mm pitch, Pb-free, RoHS-compliant surface-mount package with exposed drain pad (pins 1, 2, 5, 6) for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 5, 6 | Collector | Common high-side connection point; electrically tied internally; used for thermal sinking to PCB copper pour. |
| 3 | Base | Control input requiring current-limited drive (e.g., via series resistor from MCU); no internal biasing. |
| 4 | Emiter | Low-side return path; connects to ground or load common; defines reference for VCE and VBE measurements. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards - suitable for industrial and automotive accessory modules. |
| Ultra-low VCE(sat) | 0.05 V typ at light load enables >99% efficiency in 3.3 V/5 V load-switch applications, reducing thermal stress on adjacent components. |
| High hFE range | 200–900 across operating conditions ensures consistent saturation with minimal base drive overhead, simplifying GPIO-level control. |
| Thermally enhanced layout | Four-collector-pin configuration allows direct thermal coupling to large PCB copper areas, improving long-term reliability in sealed enclosures. |
Applications
| USB Power Delivery Switching | Smart Battery Protection |
|---|---|
Use Scenario: Enabling/disabling VBUS path between host and peripheral in dual-role USB devices. IC Role / Device Role: High-side NPN load switch controlling 5 V power delivery with fast turn-on (<100 ns) and low dropout. Use Value: 50 mV VCE(sat) minimizes voltage drop across switch, preserving USB spec compliance and reducing heat generation in tight USB-C form factors. |
Use Scenario: Isolating battery pack during overcurrent or thermal fault events in portable medical monitors. IC Role / Device Role: Primary discharge path interrupter activated by protection IC's fault signal. Use Value: 2.0 A continuous rating and 3.0 A peak handling support safe interruption of Li-ion battery discharge currents without secondary FET staging. |
| Portable Display Backlight Control | Industrial Sensor Module Enable |
Use Scenario: PWM-driven current regulation for white LED strings in handheld diagnostic scanners. IC Role / Device Role: Low-loss series switch modulating LED current with minimal forward voltage penalty. Use Value: Stable hFE and <300 MHz fT ensure linear PWM response up to 5 MHz, eliminating visible flicker and maintaining color consistency. |
Use Scenario: Power gating of MEMS pressure sensors and analog front-ends in battery-operated environmental loggers. IC Role / Device Role: Precision enable switch providing clean power-up sequencing and zero-quiescent-current sleep mode. Use Value: <0.1 µA ICBO and ICES guarantee sub-nA leakage in off-state, extending multi-year battery life in low-duty-cycle sensing applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBT4401LT1G | VCEO = 40 V, IC = 0.6 A, VCE(sat) = 0.75 V @ IC = 0.15 A - higher saturation voltage, lower current rating. | Not suitable for >1 A load switching; acceptable only in low-power logic-level switching where thermal margin is ample. | Select only if board space allows larger thermal footprint and application requires higher VCEO margin over 30 V. |
| DMT3006LPSQ-7 | PNP complement in same TSOP-6 package; VCEO = −30 V, IC = −2.0 A, VCE(sat) = 0.12 V - polarity inverted, not drop-in replaceable. | Used for high-side switching where emitter ties to supply rail; requires complementary drive logic and layout revision. | Choose when designing symmetric load-switch pairs or needing PNP functionality; not a functional substitute for NST489AMT1. |
Compared with MMBT4401LT1G and DMT3006LPSQ-7, the NST489AMT1 uniquely combines 2.0 A current capability, 50 mV VCE(sat), and AEC-Q101 qualification in TSOP-6 - offering superior thermal efficiency and automotive readiness for compact, high-reliability load management without redesigning PCB layout or drive circuitry.
Availability
NST489AMT1 is available at Aetrix Electronics and suitable for USB power delivery switching, smart battery protection, and portable display backlight control requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for NST489AMT1 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, and portable markets.
The NST489AMT1 belongs to onsemi's high-current, low-VCE(sat) NPN transistor family designed specifically for compact, thermally constrained load management in battery-powered systems - emphasizing reliability, low conduction loss, and AEC-Q101 compliance.
FAQ
What is the maximum continuous collector current rating for the NST489AMT1?
The NST489AMT1 has a maximum continuous collector current (IC) rating of 2.0 A at TA = 25 °C with adequate PCB copper area (645 mm²). Derating applies above 25 °C at 9.4 mW/°C. This rating is validated under JEDEC-standard thermal conditions and reflects real-world capability in properly laid-out portable PCBs - not just theoretical limits. The NST489AMT1 must be used within this boundary to maintain reliability and avoid thermal runaway.
Is the NST489AMT1 suitable for automotive applications?
Yes, the NST489AMT1 is AEC-Q101 qualified and PPAP capable, with full test documentation for temperature cycling, HTRB, and ESD per JESD22. The NSVT489AMT1G variant explicitly carries the "NSV" prefix denoting automotive-specific site and change controls. Both variants share identical electrical and thermal specs, making the NST489AMT1 appropriate for automotive infotainment power rails, body control module load switching, and ADAS sensor enable functions - provided layout and thermal design meet datasheet guidelines.
What is the typical VCE(sat) of the NST489AMT1 at 1.0 A collector current?
The typical VCE(sat) of the NST489AMT1 at IC = 1.0 A and IB = 100 mA is 0.10 V, with a maximum of 0.200 V under those conditions. This value is measured per JEDEC JESD22-B111 and confirmed across production lots. The low saturation voltage directly reduces power loss (Ploss = IC × VCE(sat)) - for example, only 100 mW dissipation at 1.0 A - making the NST489AMT1 highly efficient in sustained-load applications such as always-on system power gating.
Does the NST489AMT1 include built-in base resistors or protection diodes?
No, the NST489AMT1 is a bare NPN bipolar transistor with no integrated base resistors, flyback diodes, or ESD protection structures. Its pinout (pins 1,2,5,6 = collector; pin 3 = base; pin 4 = emitter) confirms discrete BJT topology. External base current limiting and optional clamping diodes must be added per application requirements. This design provides full flexibility for optimizing drive strength and switching speed but places responsibility for proper biasing and transient protection on the circuit designer - a key consideration when using the NST489AMT1 in noisy or inductive environments.
What package type does the NST489AMT1 use, and what are its thermal characteristics?
The NST489AMT1 uses the TSOP-6 package (Case 318G), measuring 3.00 × 1.50 × 0.90 mm with 0.95 mm pitch. With 645 mm² of 1 oz copper on FR-4, its thermal resistance is RJA = 106 °C/W and total dissipation is 1.180 W. The four-collector-pin configuration enables effective thermal transfer to the PCB. These values are measured per JEDEC JESD51-2 and are critical for calculating junction temperature rise - for instance, at 1.0 A and 0.10 V VCE(sat), power dissipation is 100 mW, resulting in only ~10.6 °C rise above ambient, confirming suitability for sealed, fanless portable enclosures.
NST489AMT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 30 V
- Vce Saturation (Max) @ Ib, Ic:
- 200mV @ 100mA, 1A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 500mA, 5V
- Power - Max:
- 535 mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSOP
NST489AMT1 FAQ
1.How can I place an order for NST489AMT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NST489AMT1 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 NST489AMT1 reliable?
The price and inventory of NST489AMT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NST489AMT1 is usually 5 days.
3.What payment methods are accepted for NST489AMT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NST489AMT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NST489AMT1?
NST489AMT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NST489AMT1 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 NST489AMT1?
For technical support, including NST489AMT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NST489AMT1 requirements.
6.How does Aetrix verify that NST489AMT1 is sourced from the original manufacturer or authorized distributors?
All NST489AMT1 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 NST489AMT1 meets industry standards.
7.What is the process for return or replacement of NST489AMT1?
All NST489AMT1 units undergo pre-shipment inspection (PSI). If there is an issue with NST489AMT1, 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 NST489AMT1 part is unused and in its original packaging.
Return procedure for NST489AMT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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