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NXP Semiconductors PMEM4020AND,115
- Part No.:
- PMEM4020AND,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Bipolar Transistors
- Package:
- SC-74, SOT-457
- Datasheet:
-
PMEM4020AND,115.pdf
- Description:
- TRANS NPN 40V 0.95A SC-74
- Quantity:
- Payment:
- Shipping:
Inventory:7,403
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Product details
Overview
PMEM4020AND,115 from NXP Semiconductors is a monolithic SOT457 (SC-74) integrated device combining an NPN transistor with 40 V VCEO, 2 A IC, and low 400 mV VCEsat at 2 A, plus a 40 V VR, 1 A IF Schottky rectifier with guard ring protection. It serves as a compact power switch and freewheeling diode pair in DC-DC converters and inductive load drivers.
For engineers reviewing the PMEM4020AND,115 datasheet, PMEM4020AND,115 pinout, PMEM4020AND,115 application, or PMEM4020AND,115 equivalent, key selection considerations include combined thermal dissipation (600 mW), dual-device integration reducing PCB area, ultra-low forward voltage (540–640 mV at 1 A), and validated use in MOSFET gate drive and reverse polarity protection circuits.
Technical Context
The PMEM4020AND,115 integrates two functionally independent semiconductor elements-NPN transistor and Schottky rectifier-within a single SOT457 package, sharing no internal electrical connection but thermally coupled via common leadframe. Its design enables synchronous switching behavior without cross-conduction risk.
Transistor operation features high hFE (75–900) across 1 mA–2 A IC, low RCEsat (150–190 mΩ), and fT = 150 MHz; the Schottky diode delivers ultra-fast recovery (no minority carrier storage), <100 µA IR at 40 V VR, and Cd = 43–48 pF at 1 V VR-critical for high-frequency converter efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V - Maximum safe collector-emitter blocking voltage under open-base conditions. |
| IC (DC) | 2 A at Ts ≤ 55 °C - Continuous collector current rating enabling high-side switching in 5–24 V systems. |
| VF @ 1 A | 540–640 mV - Low forward drop minimizes conduction loss in freewheeling path of buck converters. |
| VCEsat @ 2 A | 400 mV - Enables <1 W total switch loss at 2 A, supporting thermally constrained SMD layouts. |
| Rth(j-a) | 208 K/W - Junction-to-ambient thermal resistance in free air, defining maximum power handling without heatsinking. |
| Ptot | 600 mW - Total combined power dissipation limit for simultaneous transistor + diode operation. |
| Tj max | 150 °C - Maximum junction temperature ensuring reliability under sustained load in industrial ambient. |
Pinout & Package
SOT457 (SC-74) plastic surface-mounted package with 6 leads; 3.1 mm × 2.7 mm footprint, 1.1 mm height, and tin-plated copper leadframe optimized for reflow soldering on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Transistor emitter terminal; connects to ground or low-side return path in switching topologies. |
| 2 | Not connected | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or thermal stress. |
| 3 | Cathode | Schottky diode cathode; ties to switched node (e.g., buck converter output) for freewheeling current path. |
| 4 | Anode | Schottky diode anode; connects to ground or return rail, completing low-loss reverse recovery path. |
| 5 | Base | Transistor base control input; requires current-limited drive (IB ≤ 200 mA peak) for saturation. |
| 6 | Collector | Transistor collector output; shares thermal pad with cathode (Pin 3) for joint heat sinking in high-power operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated NPN + Schottky | Single-package solution eliminates interconnect inductance and layout mismatch between switch and flyback diode. |
| Guard ring protected diode | Enhanced ruggedness against voltage transients and ESD in automotive and industrial load-dump environments. |
| Low VCEsat & VF | Combined conduction losses <0.9 W at 2 A/1 A operation, enabling >92% efficiency in 12 V → 5 V buck designs. |
| Ultra-high-speed switching | No reverse recovery charge (Qrr ≈ 0), eliminating switching spikes and reducing EMI filter requirements. |
| Small SMD footprint | 3.1 mm × 2.7 mm area reduces board space by ~40% vs. discrete SOT23-6 + SOD-323 pairing. |
Applications
| DC-to-DC Converters | Inductive Load Drivers |
|---|---|
|
Use Scenario: Step-down (buck) conversion in portable power supplies and embedded controllers. IC Role / Device Role / Timing Role: NPN acts as main power switch; Schottky provides synchronous freewheeling path during off-time. Use Value: Combined low VCEsat and VF reduce total conduction loss, improving light-load efficiency and thermal margin. |
Use Scenario: Driving relays, solenoids, and small DC motors in industrial PLC I/O modules. IC Role / Device Role / Timing Role: NPN switches inductive load; Schottky clamps back-EMF during turn-off. Use Value: Guard ring protection prevents diode failure during 100 V+ inductive kick events, extending system lifetime. |
| Reverse Polarity Protection | MOSFET Gate Drivers |
|
Use Scenario: Input protection in battery-powered equipment with barrel-jack or USB-C inputs. IC Role / Device Role / Timing Role: Schottky anode connects to input; NPN emitter tied to protected output rail. Use Value: Ultra-low VF (≤640 mV) limits voltage drop to <0.7 V, preserving >94% of input voltage under full load. |
Use Scenario: High-current gate drive for logic-level N-channel MOSFETs in motor control H-bridges. IC Role / Device Role / Timing Role: NPN delivers fast 2 A peak current to charge/discharge gate capacitance; Schottky recirculates gate discharge current. Use Value: Simultaneous high IC and low VCEsat enable <50 ns turn-on delay, supporting PWM frequencies up to 500 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN transistor + Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PMEM4020APD | PNP complement with identical package, VCEO = 40 V, IC = 2 A, but opposite polarity and higher VECsat (500 mV). | Used in high-side switching configurations where sourcing current is required, not low-side sinking. | Select PMEM4020APD only when circuit topology demands PNP-based high-side control with matched thermal and footprint characteristics. |
| MBT3904DW1T1G | Discrete dual NPN in SOT-363; no integrated Schottky, VCEO = 40 V, IC = 200 mA per transistor, VCEsat = 300 mV @ 50 mA. | Limited to low-current signal switching; lacks power diode, requiring external Schottky for freewheeling. | Choose MBT3904DW1T1G only for logic-level or low-power biasing tasks-not for power switching or DC-DC applications. |
Compared with PMEM4020AND,115, PMEM4020APD offers complementary polarity for high-side use but cannot substitute directly in low-side configurations; MBT3904DW1T1G provides only transistor functionality at lower current, necessitating additional components and PCB area for equivalent functionality.
Availability
PMEM4020AND,115 is available at Aetrix Electronics and suitable for DC-to-DC converters, inductive load drivers, and reverse polarity protection circuits requiring stable component supply, consistent tape-and-reel packaging (4 mm pitch, 8 mm reel), and long-term industrial lifecycle support.
Supply support for PMEM4020AND,115 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The PMEM4020AND,115 belongs to NXP's integrated discrete power portfolio, designed specifically to reduce bill-of-materials count and improve thermal performance in space-constrained power management subsystems.
FAQ
What is the maximum continuous current rating for the NPN transistor in PMEM4020AND,115?
The NPN transistor in PMEM4020AND,115 supports a continuous collector current (IC) of 2 A when the soldering point temperature (Ts) is maintained at or below 55 °C. This rating assumes proper PCB thermal relief-specifically, a 1 cm² mounting pad for the collector (Pin 6) and cathode (Pin 3) on a single-sided copper FR4 board.
Does PMEM4020AND,115 include internal electrical connection between the transistor and Schottky diode?
No, PMEM4020AND,115 contains electrically isolated NPN transistor and Schottky rectifier elements within a shared SOT457 package. There is no internal wiring between them-only thermal coupling through the common leadframe. Circuit design must treat both devices as independent, with external connections defined by application requirements.
What is the typical forward voltage of the Schottky diode in PMEM4020AND,115 at 1 A forward current?
The Schottky diode in PMEM4020AND,115 exhibits a typical forward voltage (VF) of 540–640 mV at 1 A forward current and 25 °C ambient temperature. This low VF range is confirmed in Table 7 of the NXP datasheet and directly contributes to reduced conduction losses in high-efficiency DC-DC converters.
Can PMEM4020AND,115 be used in automotive applications?
PMEM4020AND,115 meets AEC-Q101 stress test requirements for discrete semiconductors and operates reliably from −65 °C to +150 °C junction temperature. Its guard ring–protected Schottky diode and robust VCEO/VR ratings make it suitable for under-hood automotive DC-DC modules and body-control unit load drivers-provided board-level transient suppression is implemented.
What is the thermal resistance from junction to ambient for PMEM4020AND,115 in free air?
The junction-to-ambient thermal resistance (Rth(j-a)) for the combined PMEM4020AND,115 device is 208 K/W in free air, measured on a ceramic PCB with standard footprint. This value reflects worst-case natural convection cooling and informs maximum allowable power dissipation without forced airflow or heatsinking.
PMEM4020AND,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SC-74, SOT-457
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN + Diode (Isolated)
- Current - Collector (Ic) (Max):
- 950 mA
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 200mA, 2A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 500mA, 5V
- Power - Max:
- 600 mW
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74
PMEM4020AND,115 FAQ
1.How can I place an order for PMEM4020AND,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEM4020AND,115 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 PMEM4020AND,115 reliable?
The price and inventory of PMEM4020AND,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEM4020AND,115 is usually 5 days.
3.What payment methods are accepted for PMEM4020AND,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEM4020AND,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEM4020AND,115?
PMEM4020AND,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEM4020AND,115 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 PMEM4020AND,115?
For technical support, including PMEM4020AND,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEM4020AND,115 requirements.
6.How does Aetrix verify that PMEM4020AND,115 is sourced from the original manufacturer or authorized distributors?
All PMEM4020AND,115 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 PMEM4020AND,115 meets industry standards.
7.What is the process for return or replacement of PMEM4020AND,115?
All PMEM4020AND,115 units undergo pre-shipment inspection (PSI). If there is an issue with PMEM4020AND,115, 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 PMEM4020AND,115 part is unused and in its original packaging.
Return procedure for PMEM4020AND,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PMEM4020AND,115 Tags
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onsemi
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