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

Nexperia USA Inc. PMSTA92,115

Name: PMSTA92,115
Brand: Nexperia USA Inc.
SKU: PMSTA92,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PMSTA92,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: PMSTA92,115.pdf

Description:: TRANS PNP 300V 0.1A SOT-323

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PMSTA92 from Nexperia is a PNP high-voltage transistor in SOT323 (SC-70) package, rated for −300 V V_CEO, −100 mA I_C, and 30 minimum h_FE at −10 V V_CE/−30 mA I_C; used as a high-voltage switch or amplifier in telephony line interface circuits.

For engineers reviewing the PMSTA92 datasheet, PMSTA92 pinout, PMSTA92 application, or PMSTA92 equivalent, key selection criteria include its AEC-Q101 qualification, −300 V collector-emitter blocking capability, low thermal resistance (625 K/W), and compatibility with reflow/wave soldering per SC-70 footprint standards.

Technical Context

This PNP bipolar junction transistor operates in linear or switching mode with fixed polarity biasing. Its high V_CEO (−300 V) and V_CBO (−300 V) enable use in off-hook detection and ringing signal handling where sustained high reverse voltage is present.

Thermal performance is defined under standard FR4 mounting: R_th(j-a) = 625 K/W limits continuous power dissipation to 200 mW at T_amb ≤ 25 °C. Cut-off leakage (I_CBO, I_EBO) remains ≤ −100 nA under specified bias conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−300 V: Maximum safe collector-emitter reverse voltage before breakdown in open-base configuration.
I_C	−100 mA: Continuous DC collector current rating; defines maximum steady-state load drive capability.
h_FE	30 min @ −10 V/−30 mA: Minimum DC current gain ensures predictable base drive sizing for switching applications.
V_CE(sat)	−250 mV max: Low saturation voltage minimizes conduction loss when fully turned on in switching mode.
R_th(j-a)	625 K/W: Thermal resistance determines junction temperature rise above ambient under given power dissipation.
f_T	50 MHz: Transition frequency confirms usable bandwidth for audio-frequency signal amplification or fast switching.

Pinout & Package

SOT323 (SC-70) is a 3-pin surface-mount plastic package measuring 2.2 mm × 1.35 mm × 0.95 mm, optimized for space-constrained telephony modules and requiring precise stencil-defined solder paste volume.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Current-controlled input node; requires negative bias relative to emitter to forward-bias base-emitter junction.
2	Emitter (E)	Common reference terminal for PNP operation; connected to higher potential rail in typical switch configurations.
3	Collector (C)	Output terminal handling high-voltage loads; reverse-biased during off-state to sustain −300 V blocking.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan.
−300 V V_CEO	Enables direct integration into telephone line interface ICs without external voltage clamping components.
SOT323 footprint	Reduces PCB area by >50% vs. SOT23 while maintaining compatibility with standard reflow profiles and automated placement.
Low I_CBO (≤ −100 nA)	Ensures stable high-impedance off-state in high-voltage monitoring circuits over temperature and lifetime.

Applications

Telephone Line Interface

Ring Signal Detection

Use Scenario: Detecting AC ringing signals (75–100 V RMS, 20 Hz) superimposed on −48 V DC telecom lines.

IC Role / Device Role / Timing Role: PNP high-side switch isolating ring detector circuitry from central office battery feed.

Use Value: −300 V V_CEO withstands peak ring voltages up to −140 V without breakdown or leakage-induced false triggers.

Use Scenario: Monitoring line status during call setup in VoIP gateways and PBX systems.

IC Role / Device Role / Timing Role: High-voltage comparator front-end element sensing presence of ringing waveform.

Use Value: Low I_CBO (≤ −100 nA) prevents false activation due to leakage current accumulation across high-value bias resistors.

Off-Hook Detection

High-Voltage Protection Switch

Use Scenario: Identifying subscriber loop closure (off-hook condition) in analog telephone interfaces.

IC Role / Device Role / Timing Role: Current-sensing switch activated by loop current flow through emitter-collector path.

Use Value: 30 min h_FE ensures consistent turn-on behavior across manufacturing lots and temperature range (−65 °C to 150 °C).

Use Scenario: Protecting downstream circuitry from transient surges on telecom lines (e.g., lightning-induced spikes).

IC Role / Device Role / Timing Role: Clamping device triggered by overvoltage to shunt excess energy to ground.

Use Value: −250 mV V_CE(sat) limits power dissipation during clamping events, supporting reliable repetitive surge handling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-voltage switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
PMSTA42	NPN complement; +300 V V_CEO, same package and gain specs but opposite polarity.	Requires inverted biasing and signal referencing; unsuitable for high-side switching without level-shifting.	Select only when NPN topology aligns with existing driver stage design and board layout constraints.
BC807-40	Lower V_CEO (−45 V), higher h_FE (250 min), same SOT323 package.	Not rated for telecom line voltage; limited to low-voltage logic-level switching or general-purpose amplification.	Choose only for non-telecom applications where voltage stress remains below −40 V and higher gain is prioritized.

Compared with PMSTA42 and BC807-40, the PMSTA92 uniquely supports −300 V blocking in compact SOT323 while maintaining AEC-Q101 qualification-making it irreplaceable for automotive-grade telecom interface designs requiring high-voltage robustness and space efficiency.

Availability

PMSTA92 is available at Aetrix Electronics and suitable for telephone line interface, ring detection, off-hook sensing, and high-voltage protection applications requiring stable component supply and long-term lifecycle support.

Supply support for PMSTA92 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 high-volume, high-reliability discrete and logic devices, with core competencies in automotive, industrial, and consumer power management.

The PMSTA92 belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for telecom infrastructure and automotive communication systems demanding ruggedness, precision leakage control, and AEC-Q101 compliance.

FAQ

Is PMSTA92 suitable for automotive applications?

Yes, PMSTA92 is AEC-Q101 qualified and rated for junction temperatures up to 150 °C, making it suitable for under-hood and infotainment system telecom interfaces. Its −300 V V_CEO and low leakage meet stringent automotive EMC and reliability requirements without derating.

What is the recommended soldering profile for SOT323 packaging?

The PMSTA92 supports standard lead-free reflow per JEDEC J-STD-020. Peak temperature must not exceed 260 °C for ≤ 30 seconds, with ramp rates ≤ 3 °C/s. Figure 2 in the datasheet specifies a 2.65 mm × 2.35 mm solder land pattern with 0.6 mm pad width for optimal thermal and mechanical reliability.

How does PMSTA92 compare to PMST2369A in high-voltage switching?

PMSTA92 offers −300 V V_CEO and AEC-Q101 qualification, whereas PMST2369A is rated only to −60 V and lacks automotive qualification. The PMSTA92's lower V_CE(sat) (−250 mV vs. −350 mV) also reduces conduction losses in high-duty-cycle switching applications.

Can PMSTA92 replace BC857 in existing designs?

No-BC857 has only −45 V V_CEO and is not AEC-Q101 qualified. Substituting PMSTA92 would require verifying base drive compatibility (h_FE = 30 min vs. 200–450 for BC857) and redesigning bias networks to accommodate its lower gain and higher voltage ratings.

PMSTA92,115 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:: PNP

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

Voltage - Collector Emitter Breakdown (Max):: 300 V

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 2mA, 20mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 30 @ 30mA, 10V

Power - Max:: 200 mW

Frequency - Transition:: 50MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

PMSTA92,115 FAQ

1.How can I place an order for PMSTA92,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PMSTA92,115 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 PMSTA92,115 reliable?

The price and inventory of PMSTA92,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMSTA92,115 is usually 5 days.

3.What payment methods are accepted for PMSTA92,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMSTA92,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PMSTA92,115?

PMSTA92,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PMSTA92,115 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 PMSTA92,115?

For technical support, including PMSTA92,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMSTA92,115 requirements.

6.How does Aetrix verify that PMSTA92,115 is sourced from the original manufacturer or authorized distributors?

All PMSTA92,115 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 PMSTA92,115 meets industry standards.

7.What is the process for return or replacement of PMSTA92,115?

All PMSTA92,115 units undergo pre-shipment inspection (PSI). If there is an issue with PMSTA92,115, 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 PMSTA92,115 part is unused and in its original packaging.

Return procedure for PMSTA92,115:

1.Submit a request within 90 days.

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

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