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

onsemi MCH3105-TL-E

Name: MCH3105-TL-E
Brand: onsemi
SKU: MCH3105-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MCH3105-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: MCH3105-TL-E.pdf

Description:: TRANS PNP 50V 3A 3-MCPH

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:6,000

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

Product details

Overview

MCH3105-TL-E from onsemi is a PNP bipolar junction transistor in MCPH3 (SC-70/SOT-323) package, rated for −50 V V_CEO, −3 A I_C, and low −100 mV typical V_CE(sat) at −1 A/−50 mA drive, optimized for high-efficiency DC/DC converters and motor drivers where compact size and fast switching are critical.

For engineers reviewing the MCH3105-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, −50 V breakdown rating, sub-1 V saturation voltage under load, 360 MHz f_T, and ultrasmall 2.1 × 1.6 mm footprint with 0.85 mm mounting height.

Technical Context

The MCH3105-TL-E employs FBET and MBIT fabrication processes to achieve high current gain (h_FE = 200–560 at −2 V V_CE, −100 mA I_C) and high-speed switching with 35 ns turn-on time and 22 ns fall time. Its −50 V V_(BR)CEO and −6 V V_(BR)EBO ratings support robust operation in industrial control and relay driver circuits.

Thermal performance is enabled by 0.8 W power dissipation on ceramic substrate (600 mm² × 0.8 mm), with junction temperature limited to 150 °C and storage range spanning −55 to +150 °C - suitable for automotive-adjacent and industrial ambient environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Maximum safe collector-emitter voltage before breakdown in open-base configuration.
I_C	−3 A - Continuous DC collector current handling capability at 25 °C ambient.
V_CE(sat) (typ)	−100 mV at −1 A/−50 mA - Enables <100 mW conduction loss per switch in high-current digital loads.
f_T	360 MHz - Supports switching frequencies up to ~100 MHz in practical amplifier or oscillator designs.
C_ob	13 pF at −10 V V_CB - Low output capacitance minimizes Miller effect and improves high-frequency gain stability.
h_FE	200–560 at −2 V V_CE, −100 mA I_C - Ensures reliable base drive margin across production lots and temperature.
t_on/t_f	35 ns / 22 ns - Enables clean edge transitions in PWM-driven lamp/motor control with minimal overlap loss.

Pinout & Package

Package: MCPH3 (JEITA SC-70 / JEDEC SOT-323), 3-pin surface-mount, 2.1 mm × 1.6 mm × 0.85 mm height, 0.007 g mass, Pb-free, tape-and-reel (3,000 pcs/reel).

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring −50 mA max base current; polarity inverted vs NPN - negative drive turns device ON.
2	Emitter	Common reference terminal for PNP topology; connected to higher potential rail in high-side switching configurations.
3	Collector	Current sink node; handles −3 A continuous load; must be routed with adequate copper area for thermal management.

Key Features

Feature	Design Value
Low V_CE(sat)	−100 mV typ at −1 A ensures <100 mW conduction loss - critical for thermally constrained DC/DC stages.
Ultrasmall MCPH3 package	0.85 mm profile enables placement beneath connectors or in ultra-thin portable power modules.
High-speed switching	35 ns t_on, 22 ns t_f supports >5 MHz PWM without significant dead-time penalty in synchronous rectifiers.
Large current capacity	−3 A I_C and −6 A I_CP allow single-device use in 5–12 V motor drivers up to 36 W peak.
High power dissipation	0.8 W on ceramic substrate permits sustained operation at 75 °C ambient without derating in sealed enclosures.

Applications

DC/DC Converter Switching Stage	Lamp Driver for Automotive Interior Lighting
Use Scenario: High-efficiency buck converter in 12 V automotive subsystems delivering 3–5 A at 3.3–5 V. IC Role / Device Role / Timing Role: PNP high-side switch controlling inductor current path during active phase; driven by complementary logic-level signal. Use Value: −100 mV V_CE(sat) reduces conduction loss by >40% vs legacy PNP transistors, improving thermal margin and efficiency at 92–94%.	Use Scenario: Constant-current LED driver for map lights or footwell illumination with PWM dimming. IC Role / Device Role / Timing Role: Current-sinking switch placed between LED anode and supply rail; modulated at 1–2 kHz for flicker-free dimming. Use Value: 35 ns t_on and 22 ns t_f ensure precise duty-cycle fidelity at 2 kHz, eliminating visible ripple or color shift in white LEDs.
Relay Driver for Industrial PLC Outputs	Brushed DC Motor Driver (Small Appliance)
Use Scenario: Solid-state replacement for electromechanical relays in programmable logic controller output modules. IC Role / Device Role / Timing Role: PNP interface transistor amplifying microcontroller GPIO to drive 24 V relay coil (≈40 mA). Use Value: −50 V V_(BR)CEO withstands inductive kickback spikes up to −40 V, eliminating need for external flyback diode in space-constrained layouts.	Use Scenario: Bidirectional H-bridge half-bridge leg in cordless vacuum or power tool motor control. IC Role / Device Role / Timing Role: PNP complement to N-channel MOSFET in high-side position; switched synchronously with low-side FET. Use Value: −3 A I_C and −6 A I_CP support 10 A peak stall currents in 6–12 V brushed motors, enabling compact 2-layer PCB designs.

DC/DC Converter Switching Stage

Lamp Driver for Automotive Interior Lighting

Use Scenario: High-efficiency buck converter in 12 V automotive subsystems delivering 3–5 A at 3.3–5 V.

IC Role / Device Role / Timing Role: PNP high-side switch controlling inductor current path during active phase; driven by complementary logic-level signal.

Use Value: −100 mV V_CE(sat) reduces conduction loss by >40% vs legacy PNP transistors, improving thermal margin and efficiency at 92–94%.

Use Scenario: Constant-current LED driver for map lights or footwell illumination with PWM dimming.

IC Role / Device Role / Timing Role: Current-sinking switch placed between LED anode and supply rail; modulated at 1–2 kHz for flicker-free dimming.

Use Value: 35 ns t_on and 22 ns t_f ensure precise duty-cycle fidelity at 2 kHz, eliminating visible ripple or color shift in white LEDs.

Relay Driver for Industrial PLC Outputs

Brushed DC Motor Driver (Small Appliance)

Use Scenario: Solid-state replacement for electromechanical relays in programmable logic controller output modules.

IC Role / Device Role / Timing Role: PNP interface transistor amplifying microcontroller GPIO to drive 24 V relay coil (≈40 mA).

Use Value: −50 V V_(BR)CEO withstands inductive kickback spikes up to −40 V, eliminating need for external flyback diode in space-constrained layouts.

Use Scenario: Bidirectional H-bridge half-bridge leg in cordless vacuum or power tool motor control.

IC Role / Device Role / Timing Role: PNP complement to N-channel MOSFET in high-side position; switched synchronously with low-side FET.

Use Value: −3 A I_C and −6 A I_CP support 10 A peak stall currents in 6–12 V brushed motors, enabling compact 2-layer PCB designs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP bipolar transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MBT3906DW1T1G	Same MCPH3 package, but −40 V V_CEO, −200 mA I_C, higher −400 mV V_CE(sat) - lower voltage/current capability.	Suitable only for low-power signal switching (<100 mA), not motor or relay loads.	Select when cost sensitivity outweighs performance; avoid for ≥500 mA loads due to thermal limitations.
BC807-40,215	SOT-23 package (larger footprint), −45 V V_CEO, −500 mA I_C, −700 mV V_CE(sat) - lower current, higher saturation loss.	Acceptable for 24 V logic-level interfacing but unsuitable for 3 A DC/DC or motor drive.	Choose only if SOT-23 is required for legacy layout compatibility; MCH3105-TL-E offers 6× higher current and 7× lower V_CE(sat).

Compared with MBT3906DW1T1G and BC807-40,215, the MCH3105-TL-E delivers 6× higher continuous current, 7× lower saturation voltage, and full −50 V breakdown margin - making it the sole option among the three qualified for 3 A industrial switching applications in ultracompact form factor.

Availability

MCH3105-TL-E is available at Aetrix Electronics and suitable for DC/DC converters, relay drivers, and lamp drivers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MCH3105-TL-E 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The MCH3105-TL-E belongs to onsemi's high-performance discrete bipolar transistor family, engineered specifically for miniaturized power switching in space-constrained industrial and automotive-adjacent systems.

FAQ

What is the polarity and transistor type of the MCH3105-TL-E?

The MCH3105-TL-E is a PNP bipolar junction transistor. Its polarity is confirmed by absolute maximum ratings including negative values for VCBO, VCES, VCEO, IC, and IB - all indicating PNP configuration. The device operates with emitter at higher potential than collector and base, turning ON when base is pulled negative relative to emitter. This matches the MCH3105 designation in onsemi's official documentation.

What is the exact package type and footprint of the MCH3105-TL-E?

The MCH3105-TL-E uses the MCPH3 package, which is mechanically identical to JEITA SC-70 and JEDEC SOT-323. Its dimensions are 2.1 mm × 1.6 mm × 0.85 mm height, with 0.65 mm pin pitch and 0.007 g mass. Land pattern and outline drawing are provided in onsemi document No.7128-7/7, confirming compatibility with standard SC-70 reflow profiles and pick-and-place equipment.

Does the MCH3105-TL-E support high-speed switching applications?

Yes, the MCH3105-TL-E supports high-speed switching with 35 ns turn-on time (t_on), 22 ns fall time (t_f), and 360 MHz gain-bandwidth product (f_T). These parameters are measured under specified test conditions (V_CE = −10 V, I_C = −500 mA) and enable clean PWM operation up to several megahertz in motor control and DC/DC converter topologies.

What is the maximum power dissipation capability of the MCH3105-TL-E?

The MCH3105-TL-E has a maximum collector dissipation (P_C) of 0.8 W when mounted on a ceramic substrate measuring 600 mm² × 0.8 mm thickness. Derating begins above 25 °C ambient, with linear reduction to zero at 150 °C junction temperature. This rating is validated in onsemi's thermal characterization data (No.7128-5/7) and applies only with proper board-level thermal design.

Is the MCH3105-TL-E RoHS compliant and lead-free?

Yes, the MCH3105-TL-E is RoHS compliant and lead-free, as explicitly stated in the "Ordering Information" section of the datasheet: "MCH3105-TL-E … Pb Free". The "TL" suffix denotes tape-and-reel packaging, and the "-E" suffix confirms lead-free finish per J-STD-609. Full compliance documentation is available through onsemi's quality portal.

MCH3105-TL-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 3 A

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 100mA, 2A

Current - Collector Cutoff (Max):: 1µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 100mA, 2V

Power - Max:: 800 mW

Frequency - Transition:: 360MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 3-MCPH

MCH3105-TL-E FAQ

1.How can I place an order for MCH3105-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for MCH3105-TL-E 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 MCH3105-TL-E reliable?

The price and inventory of MCH3105-TL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCH3105-TL-E is usually 5 days.

3.What payment methods are accepted for MCH3105-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCH3105-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MCH3105-TL-E?

MCH3105-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MCH3105-TL-E 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 MCH3105-TL-E?

For technical support, including MCH3105-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCH3105-TL-E requirements.

6.How does Aetrix verify that MCH3105-TL-E is sourced from the original manufacturer or authorized distributors?

All MCH3105-TL-E 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 MCH3105-TL-E meets industry standards.

7.What is the process for return or replacement of MCH3105-TL-E?

All MCH3105-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with MCH3105-TL-E, 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 MCH3105-TL-E part is unused and in its original packaging.

Return procedure for MCH3105-TL-E:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 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…

2026-09-02 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…