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

onsemi CPH3115-TL-E

Name: CPH3115-TL-E
Brand: onsemi
SKU: CPH3115-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CPH3115-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: CPH3115-TL-E.pdf

Description:: TRANS PNP 30V 1.5A 3-CPH

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CPH3115-TL-E from onsemi is a PNP bipolar junction transistor in SC-59 (SOT-23) package, rated for −30 V V_CEO, −1.5 A I_C, and 150 mV typical V_CE(sat) at I_C = −750 mA / I_B = −15 mA. It delivers high-speed switching (t_on = 35 ns, t_f = 30 ns) and operates reliably up to 150 °C junction temperature. It is used in relay drivers, lamp drivers, and motor control circuits where low saturation voltage and compact mounting height (0.9 mm) are critical.

For engineers reviewing the CPH3115-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, −30 V breakdown rating, −1.5 A continuous current capability, low V_CE(sat) performance under defined bias conditions, and SC-59 package compatibility with high-density PCB layouts.

Technical Context

The CPH3115-TL-E is a discrete PNP BJT fabricated using onsemi's MBIT process, optimized for low-saturation-voltage switching in DC-controlled loads. Its h_FE ranges from 200 to 560 at V_CE = −2 V and I_C = −100 mA, supporting stable current amplification across industrial ambient temperatures.

It exhibits f_T = 500 MHz (typ) at V_CE = −10 V and I_C = −300 mA, enabling fast turn-on/turn-off transitions. Cob = 8 pF (typ) at V_CB = −10 V ensures minimal capacitive loading in high-frequency drive stages, while its 0.9 W power dissipation rating applies when mounted on a specified 600 mm² ceramic substrate.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−30 V - Maximum allowable collector-to-emitter voltage before breakdown in common-emitter configuration
I_C	−1.5 A - Continuous DC collector current rating defining safe load-driving capacity
V_CE(sat)	150 mV (typ) at I_C = −750 mA / I_B = −15 mA - Low conduction loss enabling efficient switching in battery-powered or thermally constrained systems
f_T	500 MHz (typ) at V_CE = −10 V / I_C = −300 mA - Supports high-speed digital and pulse-width modulated (PWM) switching applications
h_FE	200–560 at V_CE = −2 V / I_C = −100 mA - Provides predictable base drive requirements for reliable saturation control
P_C	0.9 W on 600 mm² ceramic substrate - Defines thermal design boundary for heatsinking and board layout planning
t_on/t_f	35 ns / 30 ns - Enables sub-100 ns total switching transitions, suitable for >5 MHz PWM operation

Pinout & Package

CPH3115-TL-E uses the SC-59 (JEITA/IEC: TO-236, JEDEC: SOT-23) surface-mount package with 0.9 mm maximum mounting height and 0.013 g mass. The package is halogen-free and Pb-free per RoHS compliance.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal for forward-biased PNP operation; requires negative current relative to emitter to enable conduction
2	Emitter	Current source terminal in PNP configuration; connected to higher potential rail (e.g., V_CC) in high-side switch topologies
3	Collector	Current sink terminal; connects to load return path, enabling ground-referenced switching of relays, lamps, or motors

Key Features

Feature	Design Value
Low V_CE(sat)	150 mV typical at I_C = −750 mA - Reduces power loss and self-heating during sustained conduction
High-speed switching	35 ns turn-on, 30 ns fall time - Enables clean edge integrity in PWM-driven inductive loads without excessive ringing
Ultrasmall SC-59 footprint	2.9 × 1.6 × 0.9 mm - Supports miniaturized designs in space-constrained consumer and automotive modules
MBIT process technology	Enables tight parameter distribution and stable h_FE across temperature - Improves batch-to-batch consistency in production
Halogen-free & Pb-free	Complies with JESD204B and IEC 61249-2-21 - Meets global environmental compliance requirements for end-product certification

Applications

Relay Driver Circuits	Lamp Driver Modules
Use Scenario: Driving electromagnetic relays in industrial PLC output modules requiring robust 24 V DC switching. IC Role / Device Role / Timing Role: PNP high-side switch controlling relay coil current with fast de-energization to minimize contact arcing. Use Value: Low V_CE(sat) reduces coil power dissipation; 30 ns fall time ensures rapid relay release for precise timing control.	Use Scenario: Switching incandescent or LED indicator lamps in automotive dashboards and appliance panels. IC Role / Device Role / Timing Role: Discrete PNP switch providing current-limited, thermally stable lamp current sourcing. Use Value: 0.9 mm profile allows integration beneath thin front bezels; −30 V rating accommodates transient-suppressed 24 V bus systems.
Motor Control Stages	Strobe Flash Circuits
Use Scenario: Controlling small DC brush motors in portable medical devices and robotics actuators. IC Role / Device Role / Timing Role: Single-stage PNP driver in H-bridge half-bridge or direction-control logic. Use Value: 500 MHz f_T supports PWM frequencies >100 kHz for smooth torque control; 150 °C T_j rating enables operation near motor heat sources.	Use Scenario: Triggering xenon flash tubes or high-intensity LED strobes in security cameras and industrial vision systems. IC Role / Device Role / Timing Role: Fast-switching PNP switch delivering high peak current pulses to flash capacitor discharge paths. Use Value: 3 A I_CP rating handles brief surge currents; 35 ns t_on ensures precise flash timing synchronization.

Relay Driver Circuits

Lamp Driver Modules

Use Scenario: Driving electromagnetic relays in industrial PLC output modules requiring robust 24 V DC switching.

IC Role / Device Role / Timing Role: PNP high-side switch controlling relay coil current with fast de-energization to minimize contact arcing.

Use Value: Low V_CE(sat) reduces coil power dissipation; 30 ns fall time ensures rapid relay release for precise timing control.

Use Scenario: Switching incandescent or LED indicator lamps in automotive dashboards and appliance panels.

IC Role / Device Role / Timing Role: Discrete PNP switch providing current-limited, thermally stable lamp current sourcing.

Use Value: 0.9 mm profile allows integration beneath thin front bezels; −30 V rating accommodates transient-suppressed 24 V bus systems.

Motor Control Stages

Strobe Flash Circuits

Use Scenario: Controlling small DC brush motors in portable medical devices and robotics actuators.

IC Role / Device Role / Timing Role: Single-stage PNP driver in H-bridge half-bridge or direction-control logic.

Use Value: 500 MHz f_T supports PWM frequencies >100 kHz for smooth torque control; 150 °C T_j rating enables operation near motor heat sources.

Use Scenario: Triggering xenon flash tubes or high-intensity LED strobes in security cameras and industrial vision systems.

IC Role / Device Role / Timing Role: Fast-switching PNP switch delivering high peak current pulses to flash capacitor discharge paths.

Use Value: 3 A I_CP rating handles brief surge currents; 35 ns t_on ensures precise flash timing synchronization.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBT3906LT1G	V_CEO = −40 V, I_C = −200 mA, V_CE(sat) = 400 mV @ I_C = −10 mA - Lower current rating and higher saturation voltage	Suitable for signal-level switching only; not recommended for >500 mA load applications	Select when lower cost and general-purpose biasing are prioritized over power efficiency and thermal margin
DXT3906-13	V_CEO = −40 V, I_C = −1 A, V_CE(sat) = 250 mV @ I_C = −500 mA - Higher V_CE(sat) and lower f_T (250 MHz)	Acceptable for medium-current relay/lamp drives but lacks speed for >1 MHz PWM	Choose when SC-70 package compatibility is required and 0.9 mm height is not mandatory

Compared with MMBT3906LT1G and DXT3906-13, the CPH3115-TL-E provides superior current handling (−1.5 A), lower V_CE(sat) (150 mV), and faster switching (35 ns t_on), making it uniquely suited for thermally demanding, high-duty-cycle PNP switching where efficiency and response time are critical.

Availability

CPH3115-TL-E is available at Aetrix Electronics and suitable for relay drivers, lamp drivers, and motor drivers requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for CPH3115-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 focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The CPH3115-TL-E belongs to onsemi's CPH3 family of ultrasmall, high-performance bipolar transistors designed specifically for space-constrained, high-reliability switching in industrial controls and automotive subsystems.

FAQ

What is the absolute maximum collector-to-emitter voltage rating for CPH3115-TL-E?

The absolute maximum V_CEO rating for CPH3115-TL-E is −30 V at T_a = 25 °C. This rating defines the upper limit of reverse-biased collector-to-emitter voltage before risk of avalanche breakdown. Operation beyond this value may cause permanent device failure. The CPH3115-TL-E must be used within this limit in all circuit configurations, including inductive flyback scenarios where voltage spikes could exceed steady-state supply rails.

Is CPH3115-TL-E compatible with lead-free reflow soldering processes?

Yes, CPH3115-TL-E is Pb-free and qualified for standard lead-free reflow profiles, including JEDEC J-STD-020-compliant peak temperatures up to 260 °C. Its SC-59 package construction and halogen-free materials ensure reliability under IPC-A-610 Class 2 and Class 3 assembly requirements. The CPH3115-TL-E has been validated for multiple reflow cycles without degradation in V_CE(sat) or h_FE performance.

What is the typical DC current gain (h_FE) of CPH3115-TL-E at operating conditions?

The typical h_FE of CPH3115-TL-E is 560 at V_CE = −2 V and I_C = −100 mA, with a guaranteed minimum of 200 under those same conditions. This gain range enables predictable base current calculation for saturation-e.g., 15 mA base drive reliably achieves −750 mA collector current. The CPH3115-TL-E maintains usable h_FE down to −25 °C and up to 75 °C ambient, as confirmed in the official datasheet graphs.

Does CPH3115-TL-E have a specified thermal resistance (R_θJA) value?

No R_θJA is directly specified for CPH3115-TL-E in its datasheet; instead, thermal performance is defined by collector dissipation (P_C = 0.9 W) under a defined mounting condition: ceramic substrate (600 mm² × 0.8 mm). This implies an effective R_θJA ≈ 122 °C/W when referenced to that specific board layout. For accurate thermal modeling, users must replicate the test board or perform empirical measurement-the CPH3115-TL-E datasheet does not provide generic R_θJA values for standard FR-4.

Can CPH3115-TL-E be used in high-frequency amplifier applications?

The CPH3115-TL-E is not optimized for linear amplification. Its f_T = 500 MHz reflects small-signal switching capability-not small-signal gain bandwidth in common-emitter amplifier configurations. While it can operate at RF frequencies in switching mode, its h_FE roll-off, Cob = 8 pF, and lack of S-parameter characterization make it unsuitable for broadband amplifier designs. The CPH3115-TL-E is intended for digital switching, not analog signal amplification.

CPH3115-TL-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 1.5 A

Voltage - Collector Emitter Breakdown (Max):: 30 V

Vce Saturation (Max) @ Ib, Ic:: 375mV @ 15mA, 750mA

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

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

Power - Max:: 900 mW

Frequency - Transition:: 450MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 3-CPH

CPH3115-TL-E FAQ

1.How can I place an order for CPH3115-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for CPH3115-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 CPH3115-TL-E reliable?

The price and inventory of CPH3115-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 CPH3115-TL-E is usually 5 days.

3.What payment methods are accepted for CPH3115-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CPH3115-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CPH3115-TL-E?

CPH3115-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CPH3115-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 CPH3115-TL-E?

For technical support, including CPH3115-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CPH3115-TL-E requirements.

6.How does Aetrix verify that CPH3115-TL-E is sourced from the original manufacturer or authorized distributors?

All CPH3115-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 CPH3115-TL-E meets industry standards.

7.What is the process for return or replacement of CPH3115-TL-E?

All CPH3115-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with CPH3115-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 CPH3115-TL-E part is unused and in its original packaging.

Return procedure for CPH3115-TL-E:

1.Submit a request within 90 days.

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

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