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

NXP Semiconductors MPSA43,116

Name: MPSA43,116
Brand: NXP Semiconductors
SKU: MPSA43,116
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPSA43,116

Manufacturer:: NXP Semiconductors

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA) Formed Leads

Datasheet:: MPSA43,116.pdf

Description:: TRANS NPN 200V 0.1A TO-92-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MPSA43,116 from NXP Semiconductors is an NPN high-voltage transistor in TO-92 (SOT54) package, rated for V_CEO = 200 V, I_C = 100 mA DC, and P_tot = 500 mW at T_amb ≤ 25 °C; used in video signal amplification stages requiring stable high-voltage switching.

For engineers reviewing the MPSA43,116 datasheet, MPSA43,116 pinout, MPSA43,116 application, or MPSA43,116 equivalent, key selection factors include verified V_CEO/V_CBO ratings, h_FE consistency across 1–30 mA, saturation voltage under defined I_C/I_B, thermal resistance (R_th(j-a) = 250 K/W), and TO-92 mechanical compatibility with legacy through-hole layouts.

Technical Context

This discrete NPN bipolar junction transistor operates in linear or switching mode with fixed emitter-base and collector-base breakdown limits. Its design supports high-voltage gain stages where low leakage (I_CBO ≤ 100 nA at V_CB = 160 V) and controlled capacitance (C_c = 4 pF at V_CB = 20 V) are critical.

The device uses silicon planar epitaxial construction, optimized for stable h_FE (min. 25 at I_C = 1 mA; min. 40 at I_C = 10/30 mA) and low V_CEsat (≤ 500 mV at I_C = 20 mA, I_B = 2 mA), enabling efficient operation in low-current, high-V_CE analog circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	200 V - maximum continuous collector-emitter voltage with base open; defines safe operating range in high-side switch or amplifier output stage
I_C (DC)	100 mA - max DC collector current; sets upper bound for steady-state biasing in video line drivers or telephony interface circuits
h_FE	25–40 - DC current gain range across 1–30 mA; ensures predictable base drive requirements in linear amplification
V_CEsat	≤ 500 mV - collector-emitter saturation voltage at I_C = 20 mA, I_B = 2 mA; minimizes power loss in saturated switching applications
R_th(j-a)	250 K/W - thermal resistance junction-to-ambient on FR4 PCB; determines required derating above 25 °C ambient
C_c	4 pF - collector capacitance at V_CB = 20 V; impacts high-frequency response and stability in RF-coupled video stages

Pinout & Package

Package: TO-92 (SOT54), plastic single-ended leaded through-hole package; 3 leads; body length 14.5 mm, lead pitch 2.54 mm.

Pin/Terminal	Circuit Role	Design Meaning
1	Collector	Main high-voltage current path; connected to load or supply rail in common-emitter configurations
2	Base	Control terminal; requires current-limited drive to achieve specified h_FE and saturation behavior
3	Emitter	Reference node for biasing; typically grounded or tied to negative rail in NPN amplifier topologies

Key Features

Feature	Design Value
High-voltage capability	V_CBO = 200 V enables use in CRT deflection, telephone ring detection, and telecom line interface circuits
Low leakage current	I_CBO ≤ 100 nA at V_CB = 160 V ensures minimal off-state conduction in high-impedance nodes
Controlled saturation behavior	V_CEsat ≤ 500 mV and V_BEsat ≤ 900 mV at I_C/I_B = 10:1 support reliable digital switching without excessive base drive
Stable gain over current range	h_FE ≥ 40 from 10–30 mA allows consistent amplification in video sync pulse amplifiers and line drivers

Applications

Video Signal Amplification	Telephony Ring Detection
Use Scenario: Amplifying composite video signals in legacy broadcast equipment before distribution. IC Role / Device Role / Timing Role: NPN transistor configured as common-emitter amplifier with fixed bias network. Use Value: 200 V V_CEO rating safely handles video sync tip swing and transient spikes without breakdown.	Use Scenario: Detecting AC ring voltage (75–105 V RMS) on POTS lines while isolating logic circuitry. IC Role / Device Role / Timing Role: High-voltage switch triggered by rectified ring signal to assert interrupt to microcontroller. Use Value: Low I_CBO (≤100 nA) prevents false triggering during standby; TO-92 footprint simplifies opto-isolator coupling.
Professional Audio Output Stage	Industrial HV Sensor Interface
Use Scenario: Driving low-impedance loads in analog audio output buffers of studio mixing consoles. IC Role / Device Role / Timing Role: Class-A emitter follower providing current gain and impedance transformation. Use Value: h_FE ≥ 40 at 30 mA ensures stable bias point; 500 mW power rating accommodates short-term peaks.	Use Scenario: Level-shifting and buffering high-voltage sensor outputs (e.g., piezoelectric accelerometers). IC Role / Device Role / Timing Role: Common-collector buffer isolating sensitive ADC inputs from >100 V transients. Use Value: 4 pF C_c minimizes capacitive loading on high-Z sensor nodes; 250 K/W R_th(j-a) supports passive heatsinking.

Video Signal Amplification

Telephony Ring Detection

Use Scenario: Amplifying composite video signals in legacy broadcast equipment before distribution.

IC Role / Device Role / Timing Role: NPN transistor configured as common-emitter amplifier with fixed bias network.

Use Value: 200 V V_CEO rating safely handles video sync tip swing and transient spikes without breakdown.

Use Scenario: Detecting AC ring voltage (75–105 V RMS) on POTS lines while isolating logic circuitry.

IC Role / Device Role / Timing Role: High-voltage switch triggered by rectified ring signal to assert interrupt to microcontroller.

Use Value: Low I_CBO (≤100 nA) prevents false triggering during standby; TO-92 footprint simplifies opto-isolator coupling.

Professional Audio Output Stage

Industrial HV Sensor Interface

Use Scenario: Driving low-impedance loads in analog audio output buffers of studio mixing consoles.

IC Role / Device Role / Timing Role: Class-A emitter follower providing current gain and impedance transformation.

Use Value: h_FE ≥ 40 at 30 mA ensures stable bias point; 500 mW power rating accommodates short-term peaks.

Use Scenario: Level-shifting and buffering high-voltage sensor outputs (e.g., piezoelectric accelerometers).

IC Role / Device Role / Timing Role: Common-collector buffer isolating sensitive ADC inputs from >100 V transients.

Use Value: 4 pF C_c minimizes capacitive loading on high-Z sensor nodes; 250 K/W R_th(j-a) supports passive heatsinking.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN high-voltage transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC639,116	V_CEO = 80 V, I_C = 1 A, h_FE = 40–250 - lower voltage rating but higher current and gain range	Not suitable for >100 V applications; better for medium-voltage, higher-current switching	Select only if system voltage remains below 80 V and higher I_C headroom is needed
MPSA44,116	V_CEO = 400 V, same TO-92 package and pinout - direct upgrade for higher voltage margin	Same footprint and biasing; supports extended voltage range in video flyback or telecom surge protection	Drop-in replacement when 400 V rating is required without layout change

Compared with BC639,116 and MPSA44,116, the MPSA43,116 provides optimal balance of 200 V capability, low-leakage performance, and proven reliability in legacy video/telecom designs - neither over-specified nor under-rated for its target use cases.

Availability

MPSA43,116 is available at Aetrix Electronics and suitable for video signal conditioning, telephony interface design, and professional communication equipment requiring stable component supply and long-term obsolescence management.

Supply support for MPSA43,116 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 consumer markets.

The MPSA43,116 belongs to NXP's legacy discrete transistor product line, designed specifically for high-voltage analog signal processing in professional video, telephony, and communications infrastructure equipment.

FAQ

What is the maximum collector-emitter voltage rating for MPSA43,116?

The MPSA43,116 has a maximum collector-emitter voltage (V_CEO) rating of 200 V with the base open. This value is confirmed in the Absolute Maximum Ratings table of the official NXP datasheet (2004 Oct 11 revision) and defines the upper limit for safe DC operation in common-emitter configurations. Exceeding this voltage risks permanent breakdown.

Is MPSA43,116 pin-compatible with MPSA42,116?

Yes, MPSA43,116 is pin-compatible with MPSA42,116 - both use identical TO-92 (SOT54) packaging and share the same pin 1 (collector), pin 2 (base), pin 3 (emitter) assignment. However, MPSA42,116 is rated for 300 V V_CEO, while MPSA43,116 is rated for 200 V, so substitution requires verification of voltage stress margins in the target circuit.

What is the typical DC current gain (h_FE) of MPSA43,116 at 10 mA collector current?

At V_CE = 10 V and I_C = 10 mA, the MPSA43,116 exhibits a minimum h_FE of 40, with no upper limit specified. This value is measured under standard test conditions per the NXP datasheet and ensures predictable base drive sizing in linear amplifier and switching applications within its rated current range.

Can MPSA43,116 be used in surface-mount designs?

No, MPSA43,116 is supplied only in the through-hole TO-92 (SOT54) package and is not available in surface-mount variants. Its leaded construction requires plated-through holes on PCBs. For SMT alternatives, engineers should evaluate functionally similar devices such as the MMBT4401 or NSS40301MR6T1, which differ in voltage rating and gain profile.

What is the thermal resistance junction-to-ambient for MPSA43,116?

The thermal resistance junction-to-ambient (R_th(j-a)) for MPSA43,116 is 250 K/W when mounted on a standard FR4 printed-circuit board, as specified in the Thermal Characteristics section of the NXP datasheet. This value assumes natural convection cooling and guides derating curves for operation above 25 °C ambient temperature.

MPSA43,116 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA) Formed Leads

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 200 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 2mA, 20mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 40 @ 30mA, 10V

Power - Max:: 500 mW

Frequency - Transition:: 50MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

MPSA43,116 FAQ

1.How can I place an order for MPSA43,116 through Aetrix?

Please submit a Request for Quotation (RFQ) for MPSA43,116 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 MPSA43,116 reliable?

The price and inventory of MPSA43,116 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSA43,116 is usually 5 days.

3.What payment methods are accepted for MPSA43,116?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSA43,116 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPSA43,116?

MPSA43,116 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPSA43,116 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 MPSA43,116?

For technical support, including MPSA43,116 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSA43,116 requirements.

6.How does Aetrix verify that MPSA43,116 is sourced from the original manufacturer or authorized distributors?

All MPSA43,116 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 MPSA43,116 meets industry standards.

7.What is the process for return or replacement of MPSA43,116?

All MPSA43,116 units undergo pre-shipment inspection (PSI). If there is an issue with MPSA43,116, 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 MPSA43,116 part is unused and in its original packaging.

Return procedure for MPSA43,116:

1.Submit a request within 90 days.

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

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