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

Nexperia USA Inc. PMSTA05,115

Name: PMSTA05,115
Brand: Nexperia USA Inc.
SKU: PMSTA05,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PMSTA05,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: PMSTA05,115.pdf

Description:: TRANS NPN 60V 0.5A SOT-323

Quantity:: RFQ Add To RFQ list

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Inventory:18

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Product details

Overview

PMSTA05 from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in SOT323 (SC-70) package, rated for 60 V V_CEO, 500 mA I_C, and 200 mW P_tot, with h_FE ≥50 at 10 mA and 100 mA test conditions. It serves as a signal switch or linear amplifier in space-constrained telephony and professional comms hardware.

For engineers reviewing the PMSTA05 datasheet, PMSTA05 pinout, PMSTA05 application, or PMSTA05 equivalent, this page delivers verified electrical specs, thermal limits, JEITA-compliant packaging, automotive qualification status, and real-world use context - all grounded in Nexperia's Rev. 3 (22 July 2010) product data sheet.

Technical Context

This discrete NPN bipolar junction transistor operates with open-base V_CEO = 60 V and open-emitter V_CBO = 60 V, supporting switching and amplification up to f_T = 100 MHz at 10 mA/2 V bias. Its 150 °C maximum junction temperature and −65 °C to +150 °C storage range enable robust operation in industrial and automotive ambient environments.

The device exhibits V_CE(sat) ≤ 250 mV at I_C = 100 mA / I_B = 10 mA and V_BE(sat) ≤ 900 mV under identical conditions, enabling low-loss saturation in driver stages. ICBO ≤ 100 nA at V_CB = 60 V confirms stable leakage performance across temperature extremes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	60 V - Maximum collector-emitter voltage before breakdown with base open; defines safe DC switching headroom.
I_C	500 mA - Continuous collector current rating; supports medium-power signal routing without derating at 25 °C.
h_FE	≥50 - Minimum DC current gain at both 10 mA and 100 mA collector currents; ensures predictable base drive requirements.
P_tot	200 mW - Total power dissipation on FR4 PCB at T_amb ≤ 25 °C; sets thermal design boundary for compact layouts.
R_th(j-a)	625 K/W - Junction-to-ambient thermal resistance in free air; informs passive cooling feasibility in sealed enclosures.
f_T	100 MHz - Transition frequency at V_CE = 2 V, I_C = 10 mA; validates suitability for audio and sub-100 MHz RF switching.

Pinout & Package

SOT323 (SC-70) is a 3-pin, surface-mount plastic package measuring 2.2 mm × 1.35 mm × 0.9 mm, optimized for high-density PCB assembly and reflow compatibility per JEITA ED-7300A standards.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input node; requires ≤500 mA peak base drive and ≤4 V reverse bias (V_EBO) to avoid damage.
2	Emitter	Reference terminal for biasing; connected to ground or common return path in common-emitter configurations.
3	Collector	Output current sink; handles up to 500 mA continuous load and withstands 60 V transients when base is open.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - enables use in infotainment and body control modules.
Very small SMD footprint	SOT323 package occupies <1.5 mm² PCB area - reduces board space by >40% vs. SOT23 while maintaining thermal performance.
High current capability	500 mA I_C rating supports driving LEDs, relays, or logic-level MOSFET gates without external buffering.
Low saturation voltage	V_CE(sat) ≤ 250 mV at I_C/I_B = 100 mA/10 mA - minimizes conduction loss and self-heating in switching applications.

Applications

Telephony Line Interface

Professional Audio Mixer

Use Scenario: Signal level shifting and on-hook/off-hook detection in analog telephone line cards.

IC Role / Device Role / Timing Role: NPN switch controlling loop current and supervising line state via collector sensing.

Use Value: 60 V V_CEO accommodates ringing voltage surges up to 90 V peak; AEC-Q101 ensures long-term stability in telecom central office environments.

Use Scenario: Balanced/unbalanced signal coupling and mute control in studio-grade audio mixing consoles.

IC Role / Device Role / Timing Role: Discrete emitter-follower buffer and analog switch in low-noise signal paths.

Use Value: h_FE ≥50 at 100 mA ensures consistent gain matching across channels; SOT323 allows dense channel packing without crosstalk.

Automotive Infotainment

Industrial Sensor Interface

Use Scenario: Button debounce, LED backlight dimming, and CAN bus termination control in vehicle head units.

IC Role / Device Role / Timing Role: General-purpose digital switch interfacing microcontroller GPIOs to higher-current loads.

Use Value: AEC-Q101 qualification guarantees operation over −40 °C to +125 °C junction range; 500 mA I_C drives multiple indicator LEDs simultaneously.

Use Scenario: Isolating and conditioning analog outputs from pressure, temperature, or current-loop sensors.

IC Role / Device Role / Timing Role: Linear amplifier stage providing gain and impedance transformation before ADC input.

Use Value: V_BE = 1.2 V at I_C = 100 mA enables precise biasing; low ICBO ≤100 nA prevents drift in high-impedance sensor front-ends.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
PMSTA55	PNP complement with −60 V V_CEO, same SOT323 package and AEC-Q101 qualification.	Used in complementary push-pull output stages or high-side switching where polarity inversion is required.	Select when circuit topology demands PNP symmetry or source-driving capability instead of sink-driving.
MMBT3904LT1G	Same NPN function but rated for 40 V V_CEO, 200 mW P_tot, and non-automotive qualification.	Suitable for consumer-grade portable electronics where cost and size matter more than automotive reliability.	Choose only for non-automotive designs with ≤40 V supply rails and no extended temperature or lifetime requirements.

Compared with PMSTA55 and MMBT3904LT1G, PMSTA05 uniquely combines 60 V blocking, AEC-Q101 compliance, and SOT323 miniaturization - making it the sole option for space-limited automotive or telecom applications requiring both voltage margin and qualification assurance.

Availability

PMSTA05 is available at Aetrix Electronics and suitable for telephony infrastructure, professional audio equipment, and automotive infotainment systems requiring stable component supply, long-life availability, and traceable sourcing.

Supply support for PMSTA05 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 efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

PMSTA05 belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered for robust signal switching and amplification in space-constrained, thermally demanding applications such as telecom line cards and automotive control units.

FAQ

What is the maximum operating temperature for PMSTA05?

The PMSTA05 has a maximum junction temperature (T_j) of 150 °C and a storage temperature range of −65 °C to +150 °C. Its thermal resistance R_th(j-a) is 625 K/W in free air, meaning ambient temperature must be limited to ≤25 °C for full 200 mW power dissipation without derating.

Is PMSTA05 pin-compatible with MMBT3904?

No - although both are NPN transistors in SOT-23 packages, PMSTA05 uses SOT323 (SC-70), which has smaller dimensions (2.2 mm × 1.35 mm) and different pin pitch (0.65 mm vs. 0.95 mm). The pinout (1=base, 2=emitter, 3=collector) matches, but physical mounting requires layout revision.

Does PMSTA05 support pulse operation beyond its DC ratings?

Yes - the datasheet specifies pulse testing at t_p ≤ 300 μs and duty cycle δ ≤ 0.02. Under these conditions, peak collector current may reach 500 mA without exceeding thermal limits, enabling short-duration surge handling in protection or trigger circuits.

What marking code identifies PMSTA05 on the device?

PMSTA05 is marked with code *1H on the top surface of the SOT323 package. The asterisk denotes manufacturing location: "-" for Hong Kong, "p" for Hong Kong, "t" for Malaysia, or "W" for China - as specified in Table 5 of the Nexperia datasheet.

PMSTA05,115 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):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 60 V

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 10mA, 100mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 50 @ 100mA, 1V

Power - Max:: 200 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

PMSTA05,115 FAQ

1.How can I place an order for PMSTA05,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PMSTA05,115 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 PMSTA05,115 reliable?

The price and inventory of PMSTA05,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMSTA05,115 is usually 5 days.

3.What payment methods are accepted for PMSTA05,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMSTA05,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PMSTA05,115?

PMSTA05,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PMSTA05,115 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 PMSTA05,115?

For technical support, including PMSTA05,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMSTA05,115 requirements.

6.How does Aetrix verify that PMSTA05,115 is sourced from the original manufacturer or authorized distributors?

All PMSTA05,115 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 PMSTA05,115 meets industry standards.

7.What is the process for return or replacement of PMSTA05,115?

All PMSTA05,115 units undergo pre-shipment inspection (PSI). If there is an issue with PMSTA05,115, 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 PMSTA05,115 part is unused and in its original packaging.

Return procedure for PMSTA05,115:

1.Submit a request within 90 days.

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

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