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Nexperia USA Inc. PMBT3946YPN,115
- Part No.:
- PMBT3946YPN,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
PMBT3946YPN,115.pdf
- Description:
- TRANS NPN/PNP 40V 200MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,868
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Product details
Overview
PMBT3946YPN from Nexperia is an AEC-Q101-qualified NPN/PNP general-purpose double transistor in SOT363 (SC-88) package, rated for 40 V VCEO, 200 mA IC, and 300 MHz fT (NPN), used for compact dual-polarity switching and amplification in automotive body control modules and industrial sensor interfaces.
For engineers reviewing the PMBT3946YPN datasheet, PMBT3946YPN pinout, PMBT3946YPN application, or PMBT3946YPN equivalent, key selection criteria include dual-transistor polarity matching, SOT363 board-space constraints, thermal derating on FR4 PCBs, and AEC-Q101 qualification for under-hood environments.
Technical Context
This device integrates one NPN (TR1) and one PNP (TR2) transistor in a single SOT363 package with independent terminals-no internal connection between transistors. Each transistor operates with separate base-emitter and collector-emitter paths, supporting complementary biasing schemes without cross-coupling.
TR1 delivers hFE = 100–300 at IC = 10 mA, VCE = 1 V; TR2 provides matched hFE = 100–300 at IC = −10 mA, VCE = −1 V. Both exhibit low VCE(sat) ≤ 300 mV (NPN) and ≤ −400 mV (PNP) under IC/IB = 10, enabling efficient low-voltage switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V per transistor - supports 24 V automotive supply rails with 2× safety margin |
| IC | 200 mA max - drives small relays, LEDs, or logic-level MOSFET gates directly |
| fT | 300 MHz (TR1), 250 MHz (TR2) - enables audio-frequency amplification and fast digital switching |
| hFE | 100–300 @ IC = 10 mA - ensures stable current gain across industrial temperature range (−55 °C to 150 °C) |
| Ptot (per device) | 350 mW @ Tamb ≤ 25 °C - requires thermal derating above 25 °C per Fig. 1 curve |
| Rth(j-a) | 357 K/W (per device on FR4) - dictates maximum power dissipation in standard PCB layouts |
Pinout & Package
SOT363 (SC-88/TSSOP6) plastic surface-mount package, 2.2 mm × 1.35 mm footprint, 0.65 mm pitch, 0.95 mm max height, designed for reflow soldering per Fig. 16 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of TR1 (NPN) | Low-side current return path for NPN transistor; connects to ground or load return |
| 2 | Base of TR1 (NPN) | Controls NPN conduction; requires current-limiting resistor for saturation |
| 3 | Collector of TR2 (PNP) | High-side current source node for PNP; connects to positive rail or load supply |
| 4 | Emitter of TR2 (PNP) | High-side current return for PNP; ties to VCC or load supply rail |
| 5 | Base of TR2 (PNP) | Active-low control input; sinking current turns PNP on |
| 6 | Collector of TR1 (NPN) | Low-side switched output; sinks current to ground when TR1 is saturated |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and lighting modules |
| Dual-polarity integration | Eliminates need for two discrete SOT23 devices, reducing PCB area by >40% |
| Matched DC gain | hFE = 100–300 for both TR1 and TR2 at identical test conditions enables balanced complementary designs |
| Low saturation voltage | VCE(sat) ≤ 300 mV (NPN) and ≤ −400 mV (PNP) at IC/IB = 10 minimizes conduction loss in power-switching nodes |
| Thermal robustness | 150 °C max junction temperature and −55 °C min ambient rating support under-hood and industrial deployment |
Applications
| Automotive Door Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Driving window lift motor direction control and interior light dimming via PWM. IC Role / Device Role / Timing Role: Dual-transistor switch pair providing bidirectional H-bridge half-leg and LED current regulation. Use Value: Single SOT363 replaces two SOT23s, reducing BOM count and layout area while maintaining AEC-Q101 compliance. |
Use Scenario: Level-shifting and signal conditioning between 3.3 V microcontroller GPIOs and 24 V field sensors. IC Role / Device Role / Timing Role: Complementary emitter-follower buffer pair translating logic signals across voltage domains. Use Value: Matched hFE and low VBE(sat) ensure symmetric rise/fall times and minimal propagation delay skew. |
| Consumer Appliance Control Board | Medical Diagnostic Instrument |
Use Scenario: Controlling solenoid valves and status indicator LEDs in washing machine control units. IC Role / Device Role / Timing Role: General-purpose switching element handling both high-side (PNP) and low-side (NPN) loads. Use Value: 200 mA IC rating supports direct drive of 12 V/100 mA solenoids without external drivers. |
Use Scenario: Isolating microcontroller outputs from analog front-end circuitry in portable ECG monitors. IC Role / Device Role / Timing Role: Low-noise amplifier stage (NF = 5 dB NPN, 4 dB PNP) for biopotential signal buffering. Use Value: Ultra-low ICBO ≤ 50 nA ensures minimal leakage-induced offset drift in precision analog paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-transistor switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC846BPDW1T1G | Same SOT363 package, NPN/PNP pair, but hFE bin = 200–450; no AEC-Q101 qualification | Not approved for automotive use; suitable for commercial-grade consumer electronics only | Select when AEC-Q101 is not required and higher hFE tolerance is beneficial |
| DMN3028LSD-13 | MOSFET pair (N+P-channel), 30 V, 3.5 A, SO-8 package - fundamentally different technology and footprint | Replaces bipolar function with voltage-controlled switching; requires gate drive redesign | Choose only when higher current, lower RDS(on), or zero gate current is mandatory |
Compared with BC846BPDW1T1G, PMBT3946YPN trades wider hFE spread for automotive qualification and tighter thermal specs; versus DMN3028LSD-13, it offers pin-compatible bipolar behavior without gate-drive complexity but at lower current capability.
Availability
PMBT3946YPN is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and medical diagnostic equipment requiring stable component supply and long-term lifecycle assurance.
Supply support for PMBT3946YPN 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
Nexperia is a global semiconductor expert focused on essential semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
PMBT3946YPN belongs to Nexperia's general-purpose bipolar transistor portfolio, engineered for space-constrained, reliability-critical applications where dual-polarity switching and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum allowable junction temperature for PMBT3946YPN?
The absolute maximum junction temperature (Tj) is 150 °C, as defined in Table 4. Operation beyond this limit causes permanent degradation. Derating must follow Fig. 1: power dissipation drops linearly to zero at 175 °C ambient when mounted on FR4 with standard footprint.
Can PMBT3946YPN replace two separate SOT23 transistors in an existing design?
Yes-its SOT363 footprint matches the combined area of two SOT23 devices, and pin assignments (Table 2) allow direct routing replacement. However, verify thermal performance: 350 mW total device dissipation is less than the sum of two discrete SOT23s (2 × 230 mW), so power density must be reassessed.
Is the hFE guaranteed to be matched between the NPN and PNP sections?
No-Nexperia specifies hFE ranges independently for TR1 (100–300) and TR2 (100–300) under identical test conditions, but does not guarantee inter-transistor matching. Designs requiring tight gain symmetry should include calibration or feedback.
Does PMBT3946YPN support wave soldering?
Yes-Fig. 17 provides the recommended wave soldering footprint. The device is qualified for both reflow (Fig. 16) and wave processes, with solder mask and land pattern optimized for 0.6 mm pitch and 0.95 mm height.
PMBT3946YPN,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 1 NPN, 1 PNP
- Current - Collector (Ic) (Max):
- 200mA
- Voltage - Collector Emitter Breakdown (Max):
- 40V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 5mA, 50mA / 400mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 1V
- Power - Max:
- 350mW
- Frequency - Transition:
- 300MHz, 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
PMBT3946YPN,115 FAQ
1.How can I place an order for PMBT3946YPN,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PMBT3946YPN,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 PMBT3946YPN,115 reliable?
The price and inventory of PMBT3946YPN,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMBT3946YPN,115 is usually 5 days.
3.What payment methods are accepted for PMBT3946YPN,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMBT3946YPN,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMBT3946YPN,115?
PMBT3946YPN,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMBT3946YPN,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 PMBT3946YPN,115?
For technical support, including PMBT3946YPN,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMBT3946YPN,115 requirements.
6.How does Aetrix verify that PMBT3946YPN,115 is sourced from the original manufacturer or authorized distributors?
All PMBT3946YPN,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 PMBT3946YPN,115 meets industry standards.
7.What is the process for return or replacement of PMBT3946YPN,115?
All PMBT3946YPN,115 units undergo pre-shipment inspection (PSI). If there is an issue with PMBT3946YPN,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 PMBT3946YPN,115 part is unused and in its original packaging.
Return procedure for PMBT3946YPN,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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