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

Diodes Incorporated ZXTN04120HP5TC

Name: ZXTN04120HP5TC
Brand: Diodes Incorporated
SKU: ZXTN04120HP5TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXTN04120HP5TC

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: PowerDI™ 5

Datasheet:: ZXTN04120HP5TC.pdf

Description:: TRANS NPN DARL 120V 1.5A PWRDI5

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ZXTN04120HP5TC from Diodes Incorporated is a 120V NPN medium-power Darlington transistor in POWERDI®5 package, delivering 1.5A continuous collector current, >2,000 DC current gain at 1A, and 3.2W power dissipation on 50mm×50mm 2oz copper PCB. It serves as a high-voltage switching element in relay drivers, DC fan control, and solenoid interfaces where compact size and high gain are critical.

For engineers reviewing the ZXTN04120HP5TC datasheet, ZXTN04120HP5TC pinout, ZXTN04120HP5TC application, or ZXTN04120HP5TC equivalent, key selection criteria include V_CEO = 120V, h_FE ≥ 2k @ 1A, ultra-low profile (1.1mm max height), thermal resistance R_θJA = 39°C/W, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This Darlington pair integrates two NPN transistors in cascade to achieve high current gain while maintaining robust voltage blocking. Its structure enables low base drive requirements-only 1mA IB needed to saturate 1A IC-with V_CE(sat) ≤ 1.5V under that condition.

The POWERDI5 package features an exposed collector pad for enhanced thermal conduction, supporting junction-to-ambient thermal resistance as low as 39°C/W with proper PCB copper layout. It operates across –55°C to +150°C and meets JEDEC JESD22-A114 HBM ESD rating of 4,000V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	120 V - Sustains 120V collector-emitter blocking without breakdown, enabling use in 48V+ industrial power rails.
I_C (continuous)	1.5 A - Supports sustained load currents up to 1.5A without derating at T_A = 25°C with adequate heatsinking.
h_FE @ 1A	≥ 2,000 - Reduces required base drive current by >10× versus standard bipolar transistors, easing MCU GPIO interface.
R_θJA	39 °C/W - Achievable with 50mm×50mm 2oz copper pad; enables 3.2W power handling in space-constrained designs.
V_CE(sat) @ 1A	≤ 1.5 V - Limits conduction loss to <1.5W at full load, improving efficiency in PWM-driven solenoids and fans.
Package	POWERDI5 - 43% smaller than SOT223, 1.1mm max height, exposed collector pad for thermal management.
AEC-Q101	Qualified - Validated for automotive applications including engine control modules and body electronics.

Pinout & Package

POWERDI5 is a surface-mount, 3-terminal plastic package with exposed collector pad on bottom. Dimensions: 4.0mm × 6.5mm × 1.1mm (L×W×H), with 1.84mm pitch between emitter and base terminals.

Pin/Terminal	Circuit Role	Design Meaning
Collector (exposed pad)	Main current path output / heat sink interface	Electrically and thermally connected to PCB copper pour; must be soldered to maximize thermal performance.
Emitter	Current return path / reference node	Connected to ground or low-side return; forms common-emitter configuration with collector and base.
Base	Control input / gain-setting terminal	Receives low-current drive (e.g., 1mA) to switch 1A collector current; requires current-limiting resistor.

Key Features

Feature	Design Value
High-voltage blocking	V_CEO = 120V and V_CBO = 140V enable direct interface with 100V DC bus systems without external snubbers.
Ultra-compact footprint	43% smaller than SOT223 reduces board area by >20mm² in fan driver or relay module layouts.
AEC-Q101 qualification	Validated for automotive temperature cycling, humidity, and mechanical shock-suitable for under-hood applications.
Green construction	Halogen- and antimony-free, RoHS-compliant molding compound meets IEC 61249-2-21 and JEDEC J-STD-020 Level 1.
Low-profile profile	Max height 1.1mm allows integration into ultra-thin enclosures such as HVAC control panels and smart actuators.

Applications

DC Fan Control

Automotive Relay Driver

Use Scenario: PWM-controlled 24–48V brushless DC cooling fans in engine bay or power supply units.

IC Role / Device Role / Timing Role: High-side or low-side switching element controlling fan motor current via base-driven Darlington action.

Use Value: 1.5A continuous rating handles peak startup currents; 120V V_CEO prevents breakdown during inductive flyback spikes.

Use Scenario: Driving 12V/24V automotive relays in body control modules (BCM) and lighting systems.

IC Role / Device Role / Timing Role: Low-side switch interfacing microcontroller GPIO to relay coil, providing galvanic isolation and current gain.

Use Value: h_FE ≥ 2,000 ensures reliable turn-on with ≤1mA base current; AEC-Q101 qualification guarantees operation at –40°C to +125°C.

Solenoid Actuator Interface

Industrial Voltage Regulator Transistor

Use Scenario: 24–72V solenoid valves in factory automation, irrigation controllers, and pneumatic systems.

IC Role / Device Role / Timing Role: Final-stage power switch turning solenoid coils on/off based on PLC or microcontroller command.

Use Value: V_CE(sat) ≤ 1.5V minimizes self-heating during duty-cycle operation; exposed collector pad maintains T_J < 150°C.

Use Scenario: Pass transistor in linear voltage regulators supplying 5–15V at up to 1A for analog sensors or legacy ICs.

IC Role / Device Role / Timing Role: Series pass element dissipating excess voltage as heat, regulated by error amplifier feedback loop.

Use Value: 3.2W power dissipation capability supports 12V dropout at 1A; high h_FE simplifies bias network design.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXTN25012E6TA	V_CEO = 100V, h_FE = 1,000 min @ 1A, SOT223 package, R_θJA = 60°C/W	Lacks 120V rating; unsuitable for >100V bus systems; larger footprint increases board area by 37%.	Select only if system voltage stays below 90V and thermal budget allows higher junction temperature rise.
MJD122G	V_CEO = 100V, TO-252 package, h_FE = 1,000 min @ 1A, R_θJA = 50°C/W	60% larger than POWERDI5; no AEC-Q101 qualification; lower gain increases base drive burden.	Prefer for legacy designs requiring TO-252 compatibility but avoid in new automotive or space-constrained projects.

Compared with ZXTN25012E6TA and MJD122G, ZXTN04120HP5TC uniquely combines 120V blocking, AEC-Q101 compliance, and 1.1mm profile-making it the only choice for next-gen compact, high-reliability 48V+ switching in automotive and industrial edge nodes.

Availability

ZXTN04120HP5TC is available at Aetrix Electronics and suitable for DC fan control, automotive relay driving, and solenoid actuation requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for ZXTN04120HP5TC 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions.

ZXTN04120HP5TC belongs to Diodes' POWERDI® family of high-power, low-profile transistors designed specifically for automotive, industrial, and consumer applications demanding compact size, high voltage tolerance, and AEC-Q101 reliability.

FAQ

What is the maximum safe operating voltage for ZXTN04120HP5TC?

The absolute maximum collector-emitter voltage (V_CEO) is 120V, and collector-base voltage (V_CBO) is 140V. Operation above 120V in common-emitter configuration risks avalanche breakdown. For inductive loads, ensure flyback clamping limits transient V_CE to ≤120V using a TVS diode or freewheeling diode.

How should the exposed collector pad be connected on the PCB?

The exposed collector pad must be soldered directly to a minimum 50mm² copper pour (preferably 50mm × 50mm, 2oz) to achieve the rated R_θJA = 39°C/W. Use at least 4 thermal vias (0.3mm diameter) connecting the pad to inner-layer or backside ground planes to enhance heat transfer and reduce junction temperature rise.

Is ZXTN04120HP5TC suitable for linear regulator applications?

Yes-it supports continuous 1.5A collector current and 3.2W power dissipation with proper PCB thermal design. Its high h_FE (>2,000 @ 1A) reduces base drive complexity, and V_CE(sat) ≤ 1.5V minimizes dropout loss. However, thermal derating is required above 25°C ambient; consult the Safe Operating Area curve in DS36618 Rev. 3–2, page 3.

Does ZXTN04120HP5TC require a base resistor, and how is its value calculated?

Yes-a series base resistor is mandatory to limit IB and prevent damage. For 1A IC with h_FE = 2,000, target IB = 0.5mA. With 3.3V MCU GPIO and V_BE(sat) ≈ 1.8V, R_B = (3.3V − 1.8V)/0.5mA = 3kΩ. Use 2.7kΩ standard value to ensure saturation margin under worst-case h_FE and temperature.

ZXTN04120HP5TC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: PowerDI™ 5

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN - Darlington

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

Voltage - Collector Emitter Breakdown (Max):: 120 V

Vce Saturation (Max) @ Ib, Ic:: 1.5V @ 1mA, 1A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 2000 @ 1A, 5V

Power - Max:: 3.2 W

Frequency - Transition:: 150MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerDI™ 5

ZXTN04120HP5TC FAQ

1.How can I place an order for ZXTN04120HP5TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXTN04120HP5TC 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 ZXTN04120HP5TC reliable?

The price and inventory of ZXTN04120HP5TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN04120HP5TC is usually 5 days.

3.What payment methods are accepted for ZXTN04120HP5TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN04120HP5TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXTN04120HP5TC?

ZXTN04120HP5TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXTN04120HP5TC 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 ZXTN04120HP5TC?

For technical support, including ZXTN04120HP5TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN04120HP5TC requirements.

6.How does Aetrix verify that ZXTN04120HP5TC is sourced from the original manufacturer or authorized distributors?

All ZXTN04120HP5TC 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 ZXTN04120HP5TC meets industry standards.

7.What is the process for return or replacement of ZXTN04120HP5TC?

All ZXTN04120HP5TC units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN04120HP5TC, 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 ZXTN04120HP5TC part is unused and in its original packaging.

Return procedure for ZXTN04120HP5TC:

1.Submit a request within 90 days.

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

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