Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Nexperia USA Inc. PMSS3904,115

Name: PMSS3904,115
Brand: Nexperia USA Inc.
SKU: PMSS3904,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: PMSS3904,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: PMSS3904,115.pdf

Description:: TRANS NPN 40V 0.1A SOT-323

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:6,810

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

PMSS3904,115 from Nexperia is an NPN silicon switching transistor in SC-70 (SOT323) package, rated for 40 V V_CEO, 100 mA I_C, and 200 mW P_tot, with h_FE = 100–300 at I_C = 10 mA, used for low-power signal switching in telephony interface circuits and compact logic-level translators.

For engineers reviewing the PMSS3904,115 datasheet, PMSS3904,115 pinout, PMSS3904,115 application, or PMSS3904,115 equivalent, key selection criteria include V_CE(sat) ≤ 200 mV at I_C/I_B = 10 mA/1 mA, f_T = 180 MHz, C_c = 4 pF, and thermal resistance R_{th j-a} = 625 K/W on FR4 PCB.

Technical Context

This device operates as a general-purpose NPN bipolar junction transistor optimized for low-current, low-voltage switching with fast turn-on (110 ns) and controlled storage time (1000 ns). Its h_FE variation across I_C = 0.1–100 mA supports both amplification and saturated switching modes.

Designed for surface-mount use in space-constrained applications, it features low base-emitter saturation voltage (650–850 mV), tight capacitance control (C_c = 4 pF, C_e = 12 pF), and specified noise figure (5 dB at 100 μA) - enabling stable performance in analog front-ends and digital interface stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - maximum collector-emitter voltage before breakdown under open-base condition; defines safe DC switching range.
I_C (DC)	100 mA - continuous collector current rating; sets upper limit for steady-state load drive capability.
V_CE(sat)	200 mV @ I_C/I_B = 10 mA/1 mA - low saturation voltage ensures minimal power loss and heat generation in switch mode.
h_FE	100–300 @ I_C = 10 mA - wide DC current gain range enables reliable biasing across production lots and temperature.
f_T	180 MHz - transition frequency confirms usable bandwidth up to ~100 MHz for RF-coupled or high-speed digital switching.
R_{th j-a}	625 K/W - junction-to-ambient thermal resistance on FR4 board; determines temperature rise per watt dissipated.
C_c	4 pF @ V_CB = 5 V - collector-base capacitance limits high-frequency feedthrough and affects switching speed stability.

Pinout & Package

SC-70 (SOT323) plastic surface-mount package: 1.35 mm × 1.15 mm footprint, 0.65 mm pitch, 0.25 mm thickness; thermally optimized for FR4 PCB mounting with exposed leadframe.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input node; requires 1 mA drive for full saturation at 10 mA collector load.
2	Emitter	Common reference terminal; internally connected to substrate; must be tied to lowest potential in circuit.
3	Collector	Output current sink node; handles up to 100 mA DC with <200 mV drop when fully saturated.

Key Features

Feature	Design Value
Low V_CE(sat)	200 mV max at I_C/I_B = 10 mA/1 mA - reduces conduction loss and self-heating in battery-powered switches.
Controlled C_c and C_e	4 pF / 12 pF - enables predictable rise/fall times and minimizes crosstalk in dense layout environments.
Specified f_T	180 MHz - supports reliable operation in 10–50 MHz clocked logic interfaces and pulse generators.
Wide h_FE range	40–300 across I_C = 0.1–100 mA - accommodates varying drive strength without external gain compensation.

Applications

Telephony Line Interface

Logic-Level Translation

Use Scenario: Switching audio path between handset and headset in cordless phone base stations.

IC Role / Device Role / Timing Role: NPN switch controlling analog signal routing via emitter-follower or common-emitter configuration.

Use Value: Low V_CE(sat) preserves signal headroom; 4 pF C_c prevents high-frequency coupling into adjacent voice channels.

Use Scenario: Converting 3.3 V microcontroller GPIO output to drive 5 V TTL-compatible inputs.

IC Role / Device Role / Timing Role: Single-transistor level shifter operating in saturated switch mode with fixed base resistor.

Use Value: Guaranteed h_FE ≥ 100 at 10 mA ensures robust saturation margin; 180 MHz f_T supports >10 MHz toggle rates.

Low-Power Sensor Interface

Compact LED Driver

Use Scenario: Amplifying weak output from MEMS microphone preamp stage before ADC sampling.

IC Role / Device Role / Timing Role: Low-noise common-emitter amplifier biased at 100 μA with 5 dB noise figure.

Use Value: 5 dB noise figure at 100 μA enables clean signal acquisition; 12 pF C_e stabilizes gain at audio frequencies.

Use Scenario: Driving indicator LEDs in portable medical devices where board space and power are constrained.

IC Role / Device Role / Timing Role: Constant-current switch with series base resistor limiting I_B to 1 mA for 10 mA LED current.

Use Value: 200 mW P_tot rating allows sustained 10 mA drive at ambient ≤ 85 °C; SOT323 footprint saves >50% area vs. SOT23.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC846B,215	Higher h_FE (200–450), same SOT323 package, V_CEO = 65 V, P_tot = 300 mW	Better gain consistency at low I_C; higher voltage margin useful in 5 V rail systems with transients	Select when tighter h_FE tolerance or >40 V transient immunity is required.
MMBT3904LT1G	SOT-23 package, V_CEO = 40 V, I_C = 200 mA, P_tot = 310 mW, R_{th j-a} = 400 K/W	Larger footprint but higher current/power capability and better thermal performance on standard PCBs	Select when >100 mA load current or improved thermal derating is needed.

Compared with BC846B,215 and MMBT3904LT1G, PMSS3904,115 offers the smallest footprint (SOT323) and lowest capacitance (C_c = 4 pF), making it optimal for ultra-compact, high-density signal-switching designs where space and parasitic capacitance are critical constraints.

Availability

PMSS3904,115 is available at Aetrix Electronics and suitable for telephony interface modules, logic-level translation circuits, and low-power sensor signal conditioning requiring stable component supply and long-term industrial availability.

Supply support for PMSS3904,115 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

Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division, serving automotive, industrial, computing, and consumer markets.

PMSS3904,115 belongs to Nexperia's general-purpose bipolar transistor product line, engineered for reliability and consistency in space-constrained, low-power switching and amplification applications.

FAQ

Is PMSS3904,115 RoHS compliant and halogen-free?

Yes. PMSS3904,115 meets RoHS Directive 2011/65/EU and is certified halogen-free per Nexperia standard specifications. The device carries the "HF" marking suffix in compliance documentation and uses lead-free matte tin plating on terminations.

What is the maximum allowable PCB temperature during reflow soldering?

The PMSS3904,115 supports standard lead-free reflow profiles with peak temperature up to 260 °C for ≤ 30 seconds. Preheat ramp rate must not exceed 3 °C/s, and time above 217 °C must be limited to 60–150 seconds per J-STD-020.

Can PMSS3904,115 replace BC847 in existing designs?

Yes, with verification of bias network. PMSS3904,115 has lower h_FE (min 40 vs. BC847's min 110) and higher V_CE(sat) at low I_B. Recalculate base resistor values to ensure saturation at target I_C; layout compatibility is maintained due to identical SOT323 footprint.

Does PMSS3904,115 have qualified AEC-Q101 stress test data?

No. PMSS3904,115 is not AEC-Q101 qualified. It is intended for industrial and consumer applications. For automotive-grade equivalents, consider Nexperia's PUMH2 or PBSS4041 series, which carry full AEC-Q101 certification and extended temperature screening.

PMSS3904,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 40 V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 5mA, 50mA

Current - Collector Cutoff (Max):: 50nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 10mA, 1V

Power - Max:: 200 mW

Frequency - Transition:: 180MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

PMSS3904,115 FAQ

1.How can I place an order for PMSS3904,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PMSS3904,115 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 PMSS3904,115 reliable?

The price and inventory of PMSS3904,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMSS3904,115 is usually 5 days.

3.What payment methods are accepted for PMSS3904,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMSS3904,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PMSS3904,115?

PMSS3904,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PMSS3904,115 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 PMSS3904,115?

For technical support, including PMSS3904,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMSS3904,115 requirements.

6.How does Aetrix verify that PMSS3904,115 is sourced from the original manufacturer or authorized distributors?

All PMSS3904,115 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 PMSS3904,115 meets industry standards.

7.What is the process for return or replacement of PMSS3904,115?

All PMSS3904,115 units undergo pre-shipment inspection (PSI). If there is an issue with PMSS3904,115, 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 PMSS3904,115 part is unused and in its original packaging.

Return procedure for PMSS3904,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…