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onsemi NSS12501UW3T2G
- Part No.:
- NSS12501UW3T2G
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- 3-WDFN Exposed Pad
- Datasheet:
-
NSS12501UW3T2G.pdf
- Description:
- TRANS NPN 12V 5A 3WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:723
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Product details
Overview
NSS12501UW3T2G from onsemi is a 12 V, 7.0 A NPN low VCE(sat) transistor in WDFN3 package, featuring 31 mΩ equivalent RDS(on), 200–345 DC current gain (hFE), and 150 MHz fT. It serves as a high-efficiency switching element in portable DC-DC converters and battery-powered power management systems.
For engineers reviewing the NSS12501UW3T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low saturation voltage (0.007–0.120 V), AEC-Q101 qualification for automotive use, thermal resistance of 85 °C/W (with 500 mm² copper), and direct drive capability from PMU control outputs.
Technical Context
This NPN transistor operates in linear and saturated switching modes with verified VCE(sat) down to 7 mV at IC = 0.1 A / IB = 10 mA, and maintains stable hFE ≥ 200 across IC = 10 mA to 3.0 A. Its 150 MHz cutoff frequency and low input/output capacitance (Cibo = 650 pF, Cobo = 120 pF) support high-speed switching up to 100 ns rise/fall times.
Thermal design is enabled by dual dissipation ratings: 875 mW (100 mm² PCB) and 1.5 W (500 mm² PCB), with junction-to-lead thermal resistance of 23 °C/W. The device is rated for operation from −55 °C to +150 °C and qualified to AEC-Q101 for automotive instrument clusters and airbag deployment circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 12 V - Maximum safe collector-emitter blocking voltage in open-base configuration. |
| IC (continuous) | 5.0 A - Continuous DC collector current rating at TA = 25 °C with 100 mm² copper. |
| ICM | 7.0 A - Peak pulsed collector current capability under specified duty cycle conditions. |
| VCE(sat) (typ) | 0.031 V at IC = 1.0 A / IB = 0.100 A - Enables <10 mW conduction loss per switch at 1 A load. |
| hFE (min) | 200 at IC = 10 mA–3.0 A - Ensures reliable saturation with low base drive current across operating range. |
| fT | 150 MHz - Supports high-frequency switching in DC-DC controllers and motor gate drivers. |
| RJA (500 mm²) | 85 °C/W - Enables 1.5 W continuous power dissipation with standard FR-4 layout and 1 oz copper. |
Pinout & Package
Package: WDFN3 (Case 506AU), 2.0 × 2.0 mm body, 0.75 mm height, exposed thermal pad, Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Collector | Main current output path | Connected to load or switching node; thermally coupled to exposed pad for heat transfer. |
| 2 - Base | Control input terminal | Receives low-current drive signal; requires ≤0.9 V turn-on threshold for direct PMU interfacing. |
| 3 - Emitter | Current return path | Common reference for base drive and load return; tied to ground or low-side return in most topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VCE(sat) | As low as 7 mV enables <1% conduction loss in 12 V battery-fed loads at 1 A. |
| AEC-Q101 qualification | Validated for automotive safety-critical subsystems including airbag deployment and instrument cluster power stages. |
| High hFE linearity | hFE remains ≥200 from 10 mA to 3 A - reduces base drive circuit complexity and improves analog amplifier stability. |
| Thermally enhanced WDFN3 | 23 °C/W junction-to-lead resistance allows 1.5 W dissipation without external heatsink on 500 mm² PCB. |
| Pb-free & RoHS compliant | Meets global environmental compliance requirements for consumer, industrial, and automotive end equipment. |
Applications
| Portable DC-DC Converters | Battery-Powered Audio Devices |
|---|---|
Use Scenario: Step-down regulation in MP3 players and digital cameras using synchronous or pseudo-synchronous buck topology. IC Role / Device Role: Low-side switching transistor controlling inductor current path during PWM cycles. Use Value: 0.031 V VCE(sat) at 1 A reduces conduction loss by >40% vs. standard NPN transistors, extending battery runtime. |
Use Scenario: Class AB/Class D speaker driver bias control and power stage enable in cordless phones and portable speakers. IC Role / Device Role: High-gain linear amplifier and fast-switching enable switch for audio power rails. Use Value: Stable hFE ≥200 across temperature ensures consistent gain matching and low THD in analog front-end stages. |
| Automotive Instrument Clusters | Low-Voltage Disc Drive Motor Control |
Use Scenario: Backlight LED current regulation and gauge stepper motor driver in vehicle dashboards. IC Role / Device Role: Precision current sink and PWM-controlled H-bridge half-bridge switch. Use Value: AEC-Q101 qualification and −55 °C to +150 °C operation guarantee reliability in under-hood thermal environments. |
Use Scenario: Spindle and voice coil motor (VCM) actuation in 2.5″ HDDs and optical disc drives. IC Role / Device Role: High-speed switching element in motor phase drivers requiring <100 ns transition times. Use Value: 100 ns rise/fall time and 150 MHz fT support precise commutation timing for 7200 RPM+ spindle speeds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN low VCE(sat) transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSV12501UW3T2G | AEC-Q101 qualified with NSV prefix; identical electrical specs and WDFN3 package; automotive-specific traceability and PPAP documentation. | Required for Tier-1 automotive programs needing full PPAP submission and site-controlled change management. | Select NSV12501UW3T2G when automotive ASIL-B functional safety traceability and controlled change history are mandatory. |
| ZXTN2012ZTA | Higher VCEO = 20 V, lower IC = 3.5 A, SOT-23 package, VCE(sat) = 0.12 V @ 1 A - less efficient at high current but wider voltage margin. | Suitable for general-purpose 12–20 V logic-level switching where thermal constraints limit peak current to ≤3 A. | Choose ZXTN2012ZTA only if board space permits SOT-23 and system voltage may exceed 12 V transiently. |
Compared with NSS12501UW3T2G, NSV12501UW3T2G adds automotive process controls without electrical trade-offs, while ZXTN2012ZTA sacrifices saturation voltage efficiency and current capability for broader voltage tolerance and legacy package compatibility.
Availability
NSS12501UW3T2G is available at Aetrix Electronics and suitable for portable DC-DC converters, battery-powered audio devices, and automotive instrument clusters requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for NSS12501UW3T2G 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The e2PowerEdge family - to which NSS12501UW3T2G belongs - was designed specifically for high-efficiency, low-voltage switching in battery-constrained and thermally sensitive systems.
FAQ
What is the maximum continuous collector current rating for NSS12501UW3T2G?
The NSS12501UW3T2G has a maximum continuous collector current (IC) rating of 5.0 A at TA = 25 °C with 100 mm² PCB copper. Under optimized thermal conditions (500 mm² copper), it supports 7.0 A peak current (ICM). Derating applies above 25 °C per the 7.0 mW/°C specification. Always verify actual board layout thermal performance before full-load operation of NSS12501UW3T2G.
Is NSS12501UW3T2G qualified for automotive applications?
Yes, NSS12501UW3T2G is AEC-Q101 qualified and PPAP capable. It meets stringent automotive reliability standards for temperature cycling, humidity, and mechanical shock. While NSS12501UW3T2G itself carries standard part numbering, its automotive-grade variant NSV12501UW3T2G includes additional site controls and documentation required for Tier-1 automotive programs. Both share identical electrical characteristics and WDFN3 packaging.
What is the typical VCE(sat) of NSS12501UW3T2G at 1 A collector current?
The typical VCE(sat) of NSS12501UW3T2G is 0.031 V at IC = 1.0 A and IB = 0.100 A, with a maximum of 0.035 V under the same conditions. This ultra-low saturation voltage enables minimal conduction loss - approximately 31 mW at 1 A - making NSS12501UW3T2G especially effective in high-efficiency portable power stages.
Can NSS12501UW3T2G be driven directly from a PMU output?
Yes, NSS12501UW3T2G can be driven directly from a PMU output due to its high DC current gain (hFE ≥ 200 across 10 mA–3 A) and low base-emitter turn-on voltage (VBE(on) = 0.73–0.90 V). With IC = 1.0 A, only 5–10 mA base current is needed for full saturation, well within typical PMU GPIO or LDO driver capabilities. This eliminates need for external base driver stages in NSS12501UW3T2G designs.
What is the thermal resistance (RJA) of NSS12501UW3T2G on a standard PCB?
NSS12501UW3T2G has two specified RJA values depending on PCB layout: 143 °C/W for 100 mm² copper (FR-4, 1 oz), and 85 °C/W for 500 mm² copper (same construction). The lower value enables 1.5 W continuous power dissipation. Thermal performance of NSS12501UW3T2G is highly dependent on proper connection of the exposed thermal pad to internal/external copper planes - refer to onsemi's soldering guidelines for optimal mounting.
NSS12501UW3T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 3-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 5 A
- Voltage - Collector Emitter Breakdown (Max):
- 12 V
- Vce Saturation (Max) @ Ib, Ic:
- 120mV @ 400mA, 4A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2A, 2V
- Power - Max:
- 875 mW
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-WDFN (2x2)
NSS12501UW3T2G FAQ
1.How can I place an order for NSS12501UW3T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NSS12501UW3T2G 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 NSS12501UW3T2G reliable?
The price and inventory of NSS12501UW3T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSS12501UW3T2G is usually 5 days.
3.What payment methods are accepted for NSS12501UW3T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSS12501UW3T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NSS12501UW3T2G?
NSS12501UW3T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NSS12501UW3T2G 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 NSS12501UW3T2G?
For technical support, including NSS12501UW3T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSS12501UW3T2G requirements.
6.How does Aetrix verify that NSS12501UW3T2G is sourced from the original manufacturer or authorized distributors?
All NSS12501UW3T2G 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 NSS12501UW3T2G meets industry standards.
7.What is the process for return or replacement of NSS12501UW3T2G?
All NSS12501UW3T2G units undergo pre-shipment inspection (PSI). If there is an issue with NSS12501UW3T2G, 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 NSS12501UW3T2G part is unused and in its original packaging.
Return procedure for NSS12501UW3T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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