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onsemi NSS40300MZ4T3G
- Part No.:
- NSS40300MZ4T3G
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
NSS40300MZ4T3G.pdf
- Description:
- TRANS PNP 40V 3A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:3,782
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Product details
Overview
NSS40300MZ4T3G from onsemi is a PNP bipolar power transistor in the e2PowerEdge family, rated for 40 V VCEO, 3.0 A continuous collector current, and ultra-low 0.070 V typical VCE(sat) at IC = 0.5 A / IB = 50 mA. It delivers high DC current gain (hFE = 200–350) and is optimized for low-voltage, high-speed switching in portable power management and motor control circuits.
For engineers reviewing the NSS40300MZ4T3G datasheet, pinout, applications, or equivalent options, key selection criteria include its SOT-223 package thermal performance (RJA = 64 °C/W on 1"² pad), low saturation voltage enabling high-efficiency operation below 1 V supply, and AEC-Q101 qualification for automotive instrument cluster and airbag deployment use cases.
Technical Context
This PNP transistor operates with fixed-polarity current amplification and linear gain (Beta) suitable for both switching and analog amplifier roles. Its design emphasizes low VCE(sat) across wide current range (0.5–3.0 A) and stable hFE down to –40°C, supporting robust performance in battery-powered systems.
The device features complementary pairing with the NSS40301MZ4 series and supports direct drive from PMU control outputs due to high current gain and moderate VBE(sat) (≤1.0 V). Thermal resistance and safe operating area are defined for two PCB mounting conditions-standard 1"² copper pad and minimal 7.6 mm² pad-enabling layout-aware thermal design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V - Maximum blocking voltage between collector and emitter under open-base condition; defines safe operating ceiling in 5–12 V rail applications. |
| IC (continuous) | 3.0 A - Continuous collector current rating; supports load switching up to ~3 W dissipation with proper heatsinking. |
| VCE(sat) @ 0.5 A | 0.070 V typ - Ultra-low saturation voltage enables <0.035 W conduction loss at 0.5 A, critical for efficiency in portable DC-DC converters. |
| hFE @ 0.5 A | 200–350 - High DC current gain allows low base drive current (e.g., 2.5 mA for 0.5 A output), easing interface with low-power controllers. |
| fT | 160 MHz - Current-gain bandwidth product confirms suitability for high-speed switching up to ~10 MHz with adequate gain margin. |
| RJA (1"² pad) | 64 °C/W - Junction-to-ambient thermal resistance on standard FR-4 board; enables ~2.0 W power dissipation at ΔT = 128°C rise. |
| Cob | 40 pF - Output capacitance at 10 V; limits switching speed in high-frequency PWM but remains manageable for ≤500 kHz operation. |
Pinout & Package
SOT-223 (Case 318E, Style 1) surface-mount package with exposed collector tab for thermal enhancement and mechanical anchoring. Pin 1 = Base, Pin 2 & 4 = Collector (internally connected), Pin 3 = Emitter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input terminal; requires ~2.5 mA drive for 0.5 A collector current due to hFE ≥ 200. |
| 2, 4 | Collector | High-current output node; electrically tied together and thermally connected to exposed copper pad for heat transfer. |
| 3 | Emitter | Reference terminal for PNP operation; connects to higher potential rail (e.g., battery +) in high-side switch configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VCE(sat) | 0.070 V typ at 0.5 A enables >98% efficiency in 1.2 V synchronous buck topologies when used as synchronous rectifier. |
| High hFE linearity | hFE maintains 175–350 across 0.5–3.0 A, supporting accurate analog current amplification without gain compression. |
| AEC-Q101 qualified | Validated for automotive instrument clusters and airbag deployment systems per stress test requirements including temperature cycling and HTRB. |
| Pb-free, RoHS-compliant | Meets EU RoHS Directive 2011/65/EU and halogen-free/BFR-free standards for environmentally constrained industrial and consumer designs. |
| Complementary pairing | Designed as PNP counterpart to NSS40301MZ4 (NPN), enabling matched push-pull driver stages with balanced saturation characteristics. |
Applications
| DC–DC Converter Switching | Automotive Instrument Cluster |
|---|---|
Use Scenario: High-efficiency 3.3 V to 1.2 V buck converter in smartphone power management ICs. IC Role / Device Role / Timing Role: PNP high-side switch controlling synchronous rectification path during low-side FET off-time. Use Value: 0.070 V VCE(sat) reduces conduction loss by 60% vs. standard PNP transistors, extending battery life by ~8% in active mode. | Use Scenario: Backlight dimming and gauge driver in automotive digital instrument clusters. IC Role / Device Role / Timing Role: Low-voltage PNP switch driving LED strings or stepper motor coils from 5 V microcontroller GPIOs. Use Value: AEC-Q101 qualification ensures reliability over –40°C to +125°C ambient, while 3.0 A rating supports multi-segment display drivers without external buffers. |
| Portable Device Motor Control | USB-Powered Peripheral Power Switch |
Use Scenario: Low-voltage motor driver in USB-powered disk drives and tape drives. IC Role / Device Role / Timing Role: PNP emitter-follower stage providing current gain for microcontroller-driven H-bridge enable signals. Use Value: High hFE (≥200) allows direct drive from 3.3 V MCU pins with <5 mA base current, eliminating level-shifting circuitry. | Use Scenario: Load switch for USB-C PD sink port power path control in docking stations. IC Role / Device Role / Timing Role: High-side PNP switch enabling/disabling 5 V rail to downstream peripherals with fast turn-on (<100 ns). Use Value: 160 MHz fT and low Cib (130 pF) support clean 100 kHz soft-start sequencing without ringing or overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD44H11T4G | Higher VCEO (80 V), lower hFE (15–120), larger TO-252 package, RJA = 75 °C/W | Targeted at industrial 24–48 V systems; not optimized for sub-5 V battery operation | Select when higher voltage blocking or legacy TO-252 footprint required; avoid for portable efficiency-critical designs. |
| NSS40300MUT5G | Same die in SOT-723 (0.8 × 0.6 mm) package; RJA = 220 °C/W; max IC = 1.0 A | Ultra-compact footprint for space-constrained wearables; limited thermal headroom for >500 mW loads | Choose only for size-limited applications where peak current ≤1.0 A and ambient T ≤60°C; verify derating per Figure 1. |
Compared with MJD44H11T4G and NSS40300MUT5G, the NSS40300MZ4T3G uniquely balances 40 V rating, 3.0 A capability, ultra-low VCE(sat), and SOT-223 thermal performance-making it optimal for cost-sensitive, efficiency-driven 3–5 V portable and automotive subsystems requiring reliable 1–2 W switching.
Availability
NSS40300MZ4T3G is available at Aetrix Electronics and suitable for DC–DC converters, automotive instrument clusters, portable motor controls, and USB-powered peripheral power switches requiring stable component supply and long-term production continuity.
Supply support for NSS40300MZ4T3G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The e2PowerEdge family-including NSS40300MZ4T3G-is engineered specifically for low-voltage, high-efficiency power switching in battery-powered and automotive subsystems, emphasizing ultra-low saturation voltage and high current gain to reduce system-level power loss.
FAQ
What is the maximum continuous collector current rating for NSS40300MZ4T3G?
The NSS40300MZ4T3G has a maximum continuous collector current (IC) rating of 3.0 A at TC = 25°C. This rating assumes proper PCB thermal management-specifically a 1" square (645 mm²) copper collector pad on FR-4 material. At elevated case temperatures or reduced copper area, derating per Figure 1 is required; for example, at TC = 100°C, the usable IC drops to approximately 1.8 A.
Is NSS40300MZ4T3G suitable for automotive applications?
Yes, the NSS40300MZ4T3G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications including instrument cluster backlighting and airbag deployment circuits. Its operating junction temperature range of –55°C to +150°C, combined with validated reliability testing (HTGB, TC, HTRB), supports deployment in harsh under-hood and cabin environments where thermal stability and long-term parametric consistency are critical.
What is the typical VCE(sat) of NSS40300MZ4T3G at 3.0 A collector current?
The typical VCE(sat) of NSS40300MZ4T3G at IC = 3.0 A and IB = 0.3 A is 0.400 V, as specified in the Electrical Characteristics table. This value reflects real-world conduction loss under full-load switching conditions and is confirmed across temperature (–40°C to +125°C) in Figure 4. At this point, conduction loss is ~1.2 W-well within the 2.0 W total power dissipation limit when mounted on a 1"² pad.
Does NSS40300MZ4T3G have a complementary NPN part?
Yes, the NSS40300MZ4T3G is explicitly designed as the PNP complement to the NSS40301MZ4 series (e.g., NSS40301MZ4T3G). Both share identical SOT-223 packaging, thermal characteristics, and low-saturation architecture, enabling matched push-pull driver stages with symmetrical turn-on/turn-off behavior and consistent thermal profiles in H-bridge and half-bridge configurations.
What is the thermal resistance (RJA) of NSS40300MZ4T3G on a minimal PCB pad?
The thermal resistance RJA of NSS40300MZ4T3G is 155 °C/W when mounted on a minimal 0.012" square (7.6 mm²) collector pad on FR-4 board-per Note 2 in the Maximum Ratings table. This value indicates significantly reduced heat dissipation capability versus the 64 °C/W rating on a 1"² pad, limiting usable power to ~0.8 W before exceeding the 150°C maximum junction temperature under worst-case ambient conditions.
NSS40300MZ4T3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 300mA, 3A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 175 @ 1A, 1V
- Power - Max:
- 2 W
- Frequency - Transition:
- 160MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223 (TO-261)
NSS40300MZ4T3G FAQ
1.How can I place an order for NSS40300MZ4T3G through Aetrix?
Please submit a Request for Quotation (RFQ) for NSS40300MZ4T3G 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 NSS40300MZ4T3G reliable?
The price and inventory of NSS40300MZ4T3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSS40300MZ4T3G is usually 5 days.
3.What payment methods are accepted for NSS40300MZ4T3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSS40300MZ4T3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NSS40300MZ4T3G?
NSS40300MZ4T3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NSS40300MZ4T3G 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 NSS40300MZ4T3G?
For technical support, including NSS40300MZ4T3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSS40300MZ4T3G requirements.
6.How does Aetrix verify that NSS40300MZ4T3G is sourced from the original manufacturer or authorized distributors?
All NSS40300MZ4T3G 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 NSS40300MZ4T3G meets industry standards.
7.What is the process for return or replacement of NSS40300MZ4T3G?
All NSS40300MZ4T3G units undergo pre-shipment inspection (PSI). If there is an issue with NSS40300MZ4T3G, 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 NSS40300MZ4T3G part is unused and in its original packaging.
Return procedure for NSS40300MZ4T3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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