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

onsemi CPH3101-TL-E

Name: CPH3101-TL-E
Brand: onsemi
SKU: CPH3101-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CPH3101-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: 3-SMD, Gull Wing

Datasheet:: CPH3101-TL-E.pdf

Description:: TRANS PNP 30V 2A 3-CPH

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CPH3101-TL-E from onsemi is a PNP bipolar junction transistor (BJT) rated for −30 V V_CEO, −2 A I_C, and low −350 mV typical V_CE(sat) at −1.5 A/−75 mA drive, optimized for high-current switching in relay, lamp, and motor driver circuits.

For engineers reviewing the CPH3101-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified −30 V breakdown rating, 150 MHz f_T, SC-59 (CPH3) package compatibility, and −600 mV max V_CE(sat) under industrial load conditions.

Technical Context

This PNP BJT employs FBET and MBIT fabrication processes to achieve high current gain (h_FE = 200–400 at −100 mA), fast switching (t_on = 60 ns, t_f = 25 ns), and low saturation voltage-critical for minimizing conduction loss in DC load control.

It operates with −6 V V_EB maximum rating and −0.1 μA leakage (I_CBO, I_EBO), supporting reliable cutoff in high-impedance base-driven configurations across −55°C to +150°C junction temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−30 V: Maximum safe collector-emitter voltage before avalanche breakdown in common-emitter configuration.
I_C	−2 A continuous: Sustained collector current capability without thermal runaway when mounted on ceramic substrate.
V_CE(sat)	−350 to −600 mV at −1.5 A/−75 mA: Low conduction loss enabling efficient power stage operation in discrete switch designs.
f_T	150 MHz: Gain-bandwidth product confirming suitability for medium-speed digital and analog switching up to ~10 MHz practical edge rates.
h_FE	200–400 at −2 V/−100 mA: Stable DC current amplification enabling predictable base drive sizing for load switching.
t_f	25 ns: Fast fall time reducing switching transition losses and EMI generation in PWM-driven loads.
P_C	0.9 W on 600 mm² × 0.8 mm ceramic: Thermal dissipation capacity defining heatsinking requirements for sustained 1.5 A operation.

Pinout & Package

Package: CPH3 - JEITA/JEDEC-compliant SC-59 (equivalent to TO-236 and SOT-23), ultrasmall surface-mount outline with 0.013 g mass and 2.9 × 1.6 × 0.95 mm footprint.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal accepting negative current to forward-bias emitter-base junction and enable conduction.
2	Emitter	Current source terminal; connected to higher potential rail in PNP high-side switching applications.
3	Collector	Current sink terminal; delivers load current to ground or lower-potential node when saturated.

Key Features

Feature	Design Value
Low V_CE(sat)	−350 mV typical at −1.5 A enables <1 W conduction loss in 12 V relay drivers, reducing thermal stress on PCB traces.
High-speed switching	60 ns turn-on and 25 ns fall time support 5–10 MHz PWM frequencies in compact motor control stages.
Large current capacity	−2 A continuous / −4 A pulse rating allows direct driving of 12 V/24 V solenoids and lamps without external buffering.
Ultrasmall CPH3 package	2.9 × 1.6 mm footprint permits dense placement in space-constrained industrial HMI and automotive body control modules.
High power dissipation	0.9 W rating on ceramic substrate supports >1.2 A DC load current with ≤40°C ambient rise, eliminating need for discrete heatsinks.

Applications

Relay Driver Circuit	Lamp Driver Module
Use Scenario: Driving 12 V/1 A electromagnetic relays in PLC I/O modules requiring robust transient immunity and low standby power. IC Role / Device Role / Timing Role: PNP switch controlling relay coil current path between supply rail and ground, activated by microcontroller GPIO. Use Value: −350 mV V_CE(sat) limits coil voltage drop to <0.4 V, ensuring ≥11.6 V across relay for guaranteed pull-in under brownout conditions.	Use Scenario: Switching incandescent or LED indicator lamps in automotive dashboard clusters with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: High-side current source delivering regulated lamp current via emitter-follower or switched configuration. Use Value: 150 MHz f_T and 25 ns fall time suppress lamp turn-off ringing, meeting CISPR 25 Class 3 radiated emissions limits without added snubbers.
Motor Driver Stage	Flash Circuit for Camera Modules
Use Scenario: Controlling small DC brush motors (e.g., HVAC actuators) in industrial sensors where size and thermal margin are critical. IC Role / Device Role / Timing Role: Discrete PNP switch in half-H-bridge or single-ended drive topology, sinking motor current during active period. Use Value: −2 A I_C rating and 0.9 W P_C allow direct 1.5 A motor stall current handling with <30°C case rise on FR4, avoiding thermal derating.	Use Scenario: Enabling high-intensity xenon or LED flash in portable medical imaging devices requiring precise timing and low quiescent current. IC Role / Device Role / Timing Role: Fast-switching PNP switch gating flash capacitor discharge into lamp load with minimal delay jitter. Use Value: 60 ns t_on and −600 mV max V_CE(sat) ensure <100 ns total flash trigger latency and <5% energy loss in switch during 100 ms pulses.

Relay Driver Circuit

Lamp Driver Module

Use Scenario: Driving 12 V/1 A electromagnetic relays in PLC I/O modules requiring robust transient immunity and low standby power.

IC Role / Device Role / Timing Role: PNP switch controlling relay coil current path between supply rail and ground, activated by microcontroller GPIO.

Use Value: −350 mV V_CE(sat) limits coil voltage drop to <0.4 V, ensuring ≥11.6 V across relay for guaranteed pull-in under brownout conditions.

Use Scenario: Switching incandescent or LED indicator lamps in automotive dashboard clusters with strict EMI and thermal constraints.

IC Role / Device Role / Timing Role: High-side current source delivering regulated lamp current via emitter-follower or switched configuration.

Use Value: 150 MHz f_T and 25 ns fall time suppress lamp turn-off ringing, meeting CISPR 25 Class 3 radiated emissions limits without added snubbers.

Motor Driver Stage

Flash Circuit for Camera Modules

Use Scenario: Controlling small DC brush motors (e.g., HVAC actuators) in industrial sensors where size and thermal margin are critical.

IC Role / Device Role / Timing Role: Discrete PNP switch in half-H-bridge or single-ended drive topology, sinking motor current during active period.

Use Value: −2 A I_C rating and 0.9 W P_C allow direct 1.5 A motor stall current handling with <30°C case rise on FR4, avoiding thermal derating.

Use Scenario: Enabling high-intensity xenon or LED flash in portable medical imaging devices requiring precise timing and low quiescent current.

IC Role / Device Role / Timing Role: Fast-switching PNP switch gating flash capacitor discharge into lamp load with minimal delay jitter.

Use Value: 60 ns t_on and −600 mV max V_CE(sat) ensure <100 ns total flash trigger latency and <5% energy loss in switch during 100 ms pulses.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBT3906LT1G	Lower I_C (−200 mA), higher V_CE(sat) (−400 mV min), same SOT-23 package	Not suitable for >500 mA loads; limited to signal-level switching and bias networks	Select only for low-power logic interface or biasing where CPH3101-TL-E's current capacity is unnecessary.
DXT3906-7-F	Higher I_C (−3 A), same V_CEO, but larger SOT-89 package and 1.5 W P_C	Requires more PCB area and thermal relief; suited for higher-duty-cycle motor drives	Choose when >2 A peak current or >1 W dissipation is required and board space allows SOT-89 mounting.

Compared with MMBT3906LT1G and DXT3906-7-F, the CPH3101-TL-E uniquely balances −2 A current, −350 mV V_CE(sat), and ultrasmall CPH3 footprint-making it optimal for space-constrained 1–2 A switching where thermal density matters.

Availability

CPH3101-TL-E is available at Aetrix Electronics and suitable for relay driver circuits, lamp driver modules, and motor driver stages requiring stable component supply, RoHS-compliant packaging, and consistent parametric performance across production batches.

Supply support for CPH3101-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 CPH3101-TL-E belongs to onsemi's general-purpose bipolar transistor family designed specifically for high-reliability, high-current discrete switching in industrial controls and automotive body electronics.

FAQ

What is the maximum continuous collector current rating for CPH3101-TL-E?

The CPH3101-TL-E is rated for −2 A continuous collector current (I_C) at T_a = 25°C when mounted on a 600 mm² × 0.8 mm ceramic substrate. This rating assumes proper thermal management; derating applies above 25°C ambient per the PC–Ta curve in the datasheet. The CPH3101-TL-E maintains stable h_FE and low V_CE(sat) within this limit, making it suitable for sustained 1.5 A relay and lamp loads.

Does CPH3101-TL-E support high-speed switching applications?

Yes, the CPH3101-TL-E delivers 60 ns turn-on time and 25 ns fall time under standard test conditions (V_CC = −12 V, I_C = −20 I_B), enabling clean switching up to ~5 MHz PWM frequencies. Its 150 MHz f_T and low 32 pF C_ob further support fast edge integrity in motor and flash driver designs. The CPH3101-TL-E is validated for such use in onsemi's reference circuits for lamp and relay control.

What package type does CPH3101-TL-E use, and is it compatible with standard SOT-23 footprints?

The CPH3101-TL-E uses the CPH3 package, which is JEITA/JEDEC-registered as SC-59 and fully compatible with TO-236 and SOT-23 land patterns. Its 2.9 × 1.6 × 0.95 mm outline and 0.65 mm lead pitch match industry-standard SOT-23 reflow profiles. The CPH3101-TL-E can be placed and soldered using standard SOT-23 assembly equipment without footprint modification.

What is the typical V_CE(sat) of CPH3101-TL-E under industrial load conditions?

The CPH3101-TL-E exhibits −350 mV typical V_CE(sat) at −1.5 A collector current and −75 mA base drive (I_C/I_B = 20), with a maximum of −600 mV across process and temperature. This low saturation voltage directly reduces power loss and self-heating in 12 V relay coils and lamp drivers. The CPH3101-TL-E's V_CE(sat) remains stable over −40°C to +125°C, supporting wide-temperature industrial deployment.

Is CPH3101-TL-E suitable for automotive body electronics applications?

Yes, the CPH3101-TL-E meets key automotive requirements: it operates across −55°C to +150°C junction temperature, features Pb-free TL taping, and delivers robust −30 V V_CEO and −6 V V_EBO ratings for load dump and reverse-battery protection margins. Its low V_CE(sat) and high-speed switching support ASIL-B–compatible functions like mirror fold/unfold and seat position control. The CPH3101-TL-E is referenced in onsemi's automotive discrete application notes for body control modules.

CPH3101-TL-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 3-SMD, Gull Wing

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 2 A

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

Vce Saturation (Max) @ Ib, Ic:: 600mV @ 75mA, 1.5A

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

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

Power - Max:: 900 mW

Frequency - Transition:: 150MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 3-CPH

CPH3101-TL-E FAQ

1.How can I place an order for CPH3101-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for CPH3101-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 CPH3101-TL-E reliable?

The price and inventory of CPH3101-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 CPH3101-TL-E is usually 5 days.

3.What payment methods are accepted for CPH3101-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CPH3101-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CPH3101-TL-E?

CPH3101-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CPH3101-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 CPH3101-TL-E?

For technical support, including CPH3101-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CPH3101-TL-E requirements.

6.How does Aetrix verify that CPH3101-TL-E is sourced from the original manufacturer or authorized distributors?

All CPH3101-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 CPH3101-TL-E meets industry standards.

7.What is the process for return or replacement of CPH3101-TL-E?

All CPH3101-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with CPH3101-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 CPH3101-TL-E part is unused and in its original packaging.

Return procedure for CPH3101-TL-E:

1.Submit a request within 90 days.

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

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