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

onsemi CPH3115-TL-H

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

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Part No.:: CPH3115-TL-H

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: CPH3115-TL-H.pdf

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

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Product details

Overview

CPH3115-TL-H 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 0.9 W power dissipation at T_a = 25°C on ceramic substrate. It delivers low V_CE(sat) of −150 mV (typ) at I_C = −750 mA / I_B = −15 mA and supports high-speed switching with t_on = 35 ns, used in relay drivers and lamp drivers.

For engineers reviewing the CPH3115-TL-H datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, −30 V breakdown rating, −1.5 A continuous current capability, ultrasmall 0.9 mm mounting height, and halogen-free compliance per ordering suffix "-H".

Technical Context

This device operates as a single PNP BJT optimized for medium-power switching. Its design emphasizes low saturation voltage and fast transition times-t_on = 35 ns, t_stg = 205 ns (max), t_f = 30 ns-enabled by MBIT process technology and tailored doping profiles.

It exhibits DC current gain h_FE = 200–560 at V_CE = −2 V, I_C = −100 mA, and f_T = 500 MHz (typ) at V_CE = −10 V, I_C = −300 mA, supporting stable gain across −25°C to +75°C ambient range.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−30 V - Maximum safe collector-to-emitter voltage before breakdown under open-base condition.
I_C	−1.5 A - Continuous collector current rating defining steady-state load drive capability.
V_CE(sat)	−150 mV (typ) at I_C = −750 mA / I_B = −15 mA - Enables low conduction loss in saturated switch applications.
f_T	500 MHz (typ) at V_CE = −10 V, I_C = −300 mA - Supports high-frequency switching up to ~100 MHz practical operation.
h_FE	200–560 at V_CE = −2 V, I_C = −100 mA - Ensures reliable base drive margin across production temperature range.
Package	CPH3 (SC-59 / TO-236 / SOT-23) - 3-pin surface-mount package with 0.9 mm max height for space-constrained PCB layouts.
Halogen Free	Yes - Confirmed by ordering suffix "-H"; meets IEC 61249-2-21 requirements for environmentally compliant assembly.

Pinout & Package

CPH3115-TL-H uses the CPH3 package (JEITA/JEDEC SC-59, equivalent to TO-236 and SOT-23), with standardized 3-terminal configuration and 0.9 mm maximum mounting height. The package is lead-free and halogen-free, qualified for reflow soldering per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal for forward-biased PNP operation; requires negative bias relative to emitter to turn on.
2	Emitter	Current source terminal in PNP configuration; connected to higher potential (e.g., V_CC) in common-emitter switch topologies.
3	Collector	Current sink terminal; connects to load (e.g., relay coil or LED anode) referenced to ground or lower potential.

Key Features

Feature	Design Value
Low V_CE(sat)	−150 mV typical at I_C = −750 mA enables <113 mW conduction loss, reducing thermal stress in compact designs.
High-speed switching	t_on/t_f = 35 ns / 30 ns allows >5 MHz square-wave switching without significant duty-cycle distortion.
Ultrasmall footprint	CPH3 package (2.9 × 1.6 × 0.9 mm) saves >60% board area vs. SOT-223, critical for wearables and portable lighting.
High power dissipation	0.9 W on ceramic substrate supports 1.5 A loads without external heatsinking in thermally managed layouts.
MBIT process	Enables tight parameter distribution (h_FE spread 200–560) and stable f_T performance across temperature and lot variations.

Applications

Relay Drivers	Lamp Drivers
Use Scenario: Driving 12 V automotive relays requiring ≥500 mA coil current in body control modules. IC Role / Device Role / Timing Role: PNP switch controlling relay coil current path between V_BAT and ground, operating in saturation mode. Use Value: Low V_CE(sat) minimizes power loss (≤0.11 W at 750 mA), preventing thermal derating in sealed enclosures.	Use Scenario: Switching incandescent or halogen indicator lamps (12 V, 500–1000 mA) in industrial HMI panels. IC Role / Device Role / Timing Role: High-current PNP switch enabling fast on/off transitions for status indication with minimal delay. Use Value: 35 ns turn-on time ensures lamp response aligns with microcontroller GPIO timing, eliminating visible flicker.
Motor Drivers	Strobe Circuits
Use Scenario: Controlling small DC brush motors (e.g., cooling fans, 12 V, 800 mA stall current) in embedded HVAC systems. IC Role / Device Role / Timing Role: Single-stage PNP high-side driver providing motor power path from supply rail to motor terminals. Use Value: 0.9 W power rating accommodates intermittent 1.5 A surge currents during motor startup without thermal shutdown.	Use Scenario: Triggering xenon flash tubes or high-intensity LED strobes in security cameras and machine vision lighting. IC Role / Device Role / Timing Role: Fast-switching PNP transistor delivering precise current pulses to strobe load with controlled edge rates. Use Value: 30 ns fall time ensures clean pulse termination, preventing afterglow and enabling ≤10 μs minimum off-time.

Relay Drivers

Lamp Drivers

Use Scenario: Driving 12 V automotive relays requiring ≥500 mA coil current in body control modules.

IC Role / Device Role / Timing Role: PNP switch controlling relay coil current path between V_BAT and ground, operating in saturation mode.

Use Value: Low V_CE(sat) minimizes power loss (≤0.11 W at 750 mA), preventing thermal derating in sealed enclosures.

Use Scenario: Switching incandescent or halogen indicator lamps (12 V, 500–1000 mA) in industrial HMI panels.

IC Role / Device Role / Timing Role: High-current PNP switch enabling fast on/off transitions for status indication with minimal delay.

Use Value: 35 ns turn-on time ensures lamp response aligns with microcontroller GPIO timing, eliminating visible flicker.

Motor Drivers

Strobe Circuits

Use Scenario: Controlling small DC brush motors (e.g., cooling fans, 12 V, 800 mA stall current) in embedded HVAC systems.

IC Role / Device Role / Timing Role: Single-stage PNP high-side driver providing motor power path from supply rail to motor terminals.

Use Value: 0.9 W power rating accommodates intermittent 1.5 A surge currents during motor startup without thermal shutdown.

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

IC Role / Device Role / Timing Role: Fast-switching PNP transistor delivering precise current pulses to strobe load with controlled edge rates.

Use Value: 30 ns fall time ensures clean pulse termination, preventing afterglow and enabling ≤10 μs minimum off-time.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBT3906LT1G	V_CEO = −40 V, I_C = −200 mA, V_CE(sat) = −300 mV (typ) at I_C = −10 mA - lower current, higher saturation voltage.	Not suitable for 750 mA+ loads; limited to signal-level or low-power switching.	Select only when load current ≤200 mA and higher breakdown margin is prioritized over conduction loss.
PN2907A	V_CEO = −60 V, I_C = −600 mA, V_CE(sat) = −1.6 V (max) at I_C = −500 mA - significantly higher saturation voltage.	Higher conduction loss limits use in thermally constrained or battery-powered strobes.	Prefer for legacy through-hole designs where V_CEO > −30 V is mandatory and efficiency is secondary.

Compared with MMBT3906LT1G and PN2907A, CPH3115-TL-H uniquely balances −1.5 A current handling, −150 mV V_CE(sat), and 0.9 mm profile-enabling compact, efficient high-current PNP switching unattainable with either alternative.

Availability

CPH3115-TL-H is available at Aetrix Electronics and suitable for relay drivers, lamp drivers, and motor drivers requiring stable component supply, halogen-free compliance, and consistent parametric performance across production lots.

Supply support for CPH3115-TL-H 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-H belongs to onsemi's CPH series of ultrasmall-signal transistors, engineered specifically for space-constrained, medium-current switching in consumer, industrial, and automotive subsystems.

FAQ

What is the polarity and transistor type of CPH3115-TL-H?

CPH3115-TL-H is a PNP bipolar junction transistor. Its polarity is confirmed by absolute maximum ratings (e.g., V_CEO = −30 V, I_C = −1.5 A) and electrical characteristics (e.g., V_CE(sat) and V_BE(sat) specified with negative values). This polarity defines its role as a high-side switch in common-emitter configurations, and CPH3115-TL-H must be biased with base voltage lower than emitter to conduct.

Does CPH3115-TL-H meet halogen-free requirements?

Yes, CPH3115-TL-H meets halogen-free requirements as indicated by the "-H" suffix in its ordering number. The datasheet explicitly states "Pb Free and Halogen Free" for CPH3115-TL-H, and it complies with IEC 61249-2-21. This makes CPH3115-TL-H suitable for environmentally regulated markets including EU RoHS and China RoHS, without requiring additional material declarations.

What is the maximum power dissipation of CPH3115-TL-H and under what conditions?

The maximum collector dissipation (P_C) of CPH3115-TL-H is 0.9 W, specified when mounted on a ceramic substrate measuring 600 mm² × 0.8 mm thickness. This value drops with increasing ambient temperature per the derating curve (e.g., ~0.5 W at 75°C). CPH3115-TL-H must be applied within this thermal limit to avoid junction overheating; exceeding it risks permanent degradation of h_FE and V_CE(sat).

Can CPH3115-TL-H replace CPH3115-TL-E in a design?

CPH3115-TL-H can replace CPH3115-TL-E electrically and mechanically, as both share identical electrical specifications, pinout, and CPH3 package. The only difference is halogen content: CPH3115-TL-H is halogen-free, while CPH3115-TL-E is Pb-free only. No layout or schematic changes are needed, but CPH3115-TL-H should be selected when halogen-free compliance is required for final product certification.

What is the typical gain-bandwidth product (f_T) of CPH3115-TL-H and how is it measured?

The typical gain-bandwidth product (f_T) of CPH3115-TL-H is 500 MHz, measured under conditions of V_CE = −10 V and I_C = −300 mA at T_a = 25°C. This parameter reflects the frequency at which current gain drops to unity and confirms suitability for high-speed switching applications up to ~100 MHz. The f_T value is validated per JEDEC test methods and appears in the Electrical Characteristics table of the official CPH3115/CPH3215 datasheet.

CPH3115-TL-H 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-H FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your CPH3115-TL-H 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-H?

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

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

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

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

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

Return procedure for CPH3115-TL-H:

1.Submit a request within 90 days.

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

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