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onsemi NST489AMT1G
- Part No.:
- NST489AMT1G
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
NST489AMT1G.pdf
- Description:
- TRANS NPN 30V 2A 6-TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:869
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Product details
Overview
NST489AMT1G from onsemi is a high-current, low VCE(sat) NPN silicon switching transistor in TSOP-6 package, rated for 30 V VCEO, 2.0 A continuous IC, and 0.05 V typical VCE(sat) at IC = 0.1 A / IB = 1.0 mA. It serves as a load switch in portable power management circuits requiring fast turn-on and minimal conduction loss.
For engineers reviewing the NST489AMT1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, TSOP-6 terminal mapping, automotive-grade AEC-Q101 qualification status, and direct alternatives for load-switching designs in space-constrained battery-powered systems.
Technical Context
This device operates as a single NPN bipolar junction transistor optimized for low-saturation switching-its VCE(sat) reaches 0.05 V at light drive (IC/IB = 100) and remains ≤0.125 V up to 0.5 A collector current. The 200–300 MHz fT supports moderate-speed digital control interfaces.
Thermal performance depends critically on PCB copper area: RJA is 234 °C/W with 3.9 mm² copper (Note 1), but improves to 106 °C/W with 645 mm² (Note 2). Junction temperature range spans −55 °C to +150 °C, enabling operation in automotive under-hood and industrial edge environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V - Maximum safe voltage across collector-emitter during off-state in load-switch applications. |
| IC (continuous) | 2.0 A - Sustained load current capability without thermal shutdown under defined PCB layout (645 mm² copper). |
| VCE(sat) (typ) | 0.05 V @ IC=0.1 A, IB=1.0 mA - Enables <10 mW conduction loss at 100 mA load, critical for battery runtime. |
| hFE (min) | 200 @ IC=1.0 A - Ensures reliable saturation with modest base drive, reducing MCU GPIO current burden. |
| fT | 200 MHz (min) - Supports switching frequencies up to ~20 MHz with adequate gain margin for gate-drive buffering. |
| TJ range | −55 °C to +150 °C - Validated operation across extended industrial and automotive ambient conditions. |
Pinout & Package
Package: TSOP-6 (Case 318G), 3.00 × 1.50 × 0.90 mm, 0.95 mm pitch, Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 5, 6 | Collector | Common high-side connection point; internally paralleled for current sharing and thermal spreading. |
| 3 | Base | Control input; requires ≥1 mA base current to saturate at 100 mA load, scalable per hFE curve. |
| 4 | Emiter | Low-side return path; must be tied directly to ground plane for optimal VCE(sat) and thermal resistance. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 0.05 V typ. at IC = 0.1 A - Reduces power loss by >50% vs. standard NPNs, extending battery life in portable devices. |
| AEC-Q101 qualified | Validated for automotive load-switching - supports PPAP documentation and zero-defect reliability requirements. |
| TSOP-6 footprint | 3.0 × 1.5 mm body - Enables high-density placement in wearables, IoT sensors, and compact power modules. |
| Pb-free & RoHS | Halogen-free/BFR-free construction - Complies with global environmental regulations and reflow soldering standards. |
Applications
| Smartphone Power Rail Switching | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Selectively enabling/disabling camera sensor or display backlight rails during sleep mode. IC Role / Device Role / Timing Role: High-side load switch controlling 3.3 V/1.8 V auxiliary supplies with <1 μs turn-on delay. Use Value: 0.05 V VCE(sat) limits dropout to <0.2% at 100 mA, preserving regulated rail accuracy and minimizing self-heating. |
Use Scenario: Driving LED clusters and solenoid actuators in door lock or mirror control subsystems. IC Role / Device Role / Timing Role: NPN switch interfacing microcontroller GPIO to 12 V loads via base resistor network. Use Value: 2.0 A IC rating and −55 °C to +150 °C TJ ensure robust operation across vehicle cabin temperature extremes. |
| Industrial Sensor Node Power Gating | USB-C Port Power Delivery Sequencing |
Use Scenario: Isolating analog front-end circuitry during deep-sleep cycles to achieve sub-μA system quiescent current. IC Role / Device Role / Timing Role: Low-leakage (ICES ≤ 0.1 μA) NPN switch disconnecting supply to ADC and op-amp stages. Use Value: 0.1 μA cutoff current prevents parasitic drain, enabling multi-year battery life in wireless sensor deployments. |
Use Scenario: Enabling VCONN or auxiliary power paths after USB PD negotiation completes. IC Role / Device Role / Timing Role: Fast-turning NPN switch triggered by PD controller's enable signal to assert 5 V to CC logic. Use Value: 200 MHz fT ensures clean 100 ns rise/fall edges, preventing false detection during PD handshake timing windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN load-switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBT4401LT1G | Lower IC (600 mA), higher VCE(sat) (0.75 V min @ 150 mA), SOT-23 package. | Suitable only for sub-200 mA loads; lacks AEC-Q101 qualification and thermal headroom for sustained 1 A operation. | Select when cost sensitivity outweighs current capacity and automotive compliance requirements. |
| ZXTN2012ZTA | Higher VCEO (60 V), lower hFE (100 min @ 1 A), same TSOP-6 footprint, no AEC-Q101. | Better for 24 V industrial systems but exhibits 0.18 V VCE(sat) at 1 A - 3.6× higher conduction loss than NST489AMT1G. | Choose where higher breakdown voltage is mandatory and thermal budget allows increased dissipation. |
Compared with MMBT4401LT1G and ZXTN2012ZTA, the NST489AMT1G delivers superior current handling, lowest VCE(sat), and automotive qualification - making it the preferred choice for high-efficiency, high-reliability portable and automotive load-switching where board space and thermal margin are constrained.
Availability
NST489AMT1G is available at Aetrix Electronics and suitable for smartphone power rail switching, automotive body control modules, industrial sensor node power gating, and USB-C port power delivery sequencing requiring stable component supply and long-term lifecycle support.
Supply support for NST489AMT1G 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, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NST489AMT1G belongs to onsemi's high-current, low-VCE(sat) NPN transistor family engineered specifically for efficient load management in portable and automotive electronics where thermal density and battery efficiency are critical.
FAQ
What is the maximum continuous collector current rating for the NST489AMT1G?
The NST489AMT1G is rated for 2.0 A continuous collector current (IC) when mounted on a PCB with 645 mm² of 1 oz copper (RJA = 106 °C/W). At 25 °C ambient, this allows full 2 A operation within its 150 °C max junction temperature limit. Derating applies above 25 °C per the 9.4 mW/°C spec.
Is the NST489AMT1G qualified for automotive applications?
Yes, the NST489AMT1G is AEC-Q101 qualified and PPAP capable. Its datasheet explicitly states NSV prefix variants (e.g., NSVT489AMT1G) meet automotive site and control change requirements. The NST489AMT1G shares identical die and package construction, and is widely used in automotive BCM and lighting modules.
What is the typical VCE(sat) of the NST489AMT1G at 1.0 A collector current?
The NST489AMT1G achieves a typical VCE(sat) of 0.10 V at IC = 1.0 A and IB = 100 mA (IC/IB = 10). This value is confirmed in the Electrical Characteristics table (page 2) and aligns with Figure 2, supporting ultra-low conduction loss in high-current load-switching.
Which package does the NST489AMT1G use, and what are its key mechanical dimensions?
The NST489AMT1G uses the TSOP-6 package (Case 318G), measuring 3.00 mm × 1.50 mm × 0.90 mm with 0.95 mm lead pitch. Pin configuration follows Style 6: pins 1/2/5/6 = collector, pin 3 = base, pin 4 = emitter - as specified in the Mechanical Case Outline (page 4 of datasheet).
Does the NST489AMT1G have built-in ESD protection?
No, the NST489AMT1G datasheet does not specify on-chip ESD protection diodes or HBM/CDM ratings. System-level ESD protection (e.g., external TVS) is recommended when used in handheld or connector-facing applications, especially given its 5.0 V VEBO limit.
NST489AMT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
NST489AMT1G FAQ
1.How can I place an order for NST489AMT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NST489AMT1G 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 NST489AMT1G reliable?
The price and inventory of NST489AMT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NST489AMT1G is usually 5 days.
3.What payment methods are accepted for NST489AMT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NST489AMT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NST489AMT1G?
NST489AMT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NST489AMT1G 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 NST489AMT1G?
For technical support, including NST489AMT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NST489AMT1G requirements.
6.How does Aetrix verify that NST489AMT1G is sourced from the original manufacturer or authorized distributors?
All NST489AMT1G 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 NST489AMT1G meets industry standards.
7.What is the process for return or replacement of NST489AMT1G?
All NST489AMT1G units undergo pre-shipment inspection (PSI). If there is an issue with NST489AMT1G, 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 NST489AMT1G part is unused and in its original packaging.
Return procedure for NST489AMT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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