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

Diodes Incorporated ZXTN25100DFHTA

Name: ZXTN25100DFHTA
Brand: Diodes Incorporated
SKU: ZXTN25100DFHTA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXTN25100DFHTA

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: ZXTN25100DFHTA.pdf

Description:: TRANS NPN 100V 2.5A SOT-23-3

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Product details

Overview

ZXTN25100DFHTA from Diodes Incorporated is a 100V NPN low-saturation bipolar junction transistor in SOT23 package, rated for 2.5A continuous collector current, with V_CE(sat) ≤ 95mV at 1A/100mA drive, and R_CE(sat) = 80mΩ - optimized for high-efficiency switching in DC-DC converters and motor control stages.

For engineers reviewing the ZXTN25100DFHTA datasheet, ZXTN25100DFHTA pinout, ZXTN25100DFHTA application, or ZXTN25100DFHTA equivalent, key selection criteria include breakdown voltage margin (BV_CEO = 100V), thermal resistance (R_θJA = 69°C/W under optimized PCB layout), and saturation performance at high current density.

Technical Context

This NPN transistor employs epitaxial planar die construction to achieve high gain (h_FE = 40–900 across 10mA–2.5A) and robust forward-blocking capability (V_CEX = 180V). Its low V_BE(sat) (910–1000mV at 2.5A/250mA) enables efficient base drive in compact power stages.

Designed for fast-switching applications, it delivers f_T = 175MHz and sub-microsecond switching times (t_d = 16.4ns, t_f = 158ns), with C_obo = 8.7–15pF ensuring minimal Miller effect in hard-switched topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100V - supports operation in 48V and 60V bus systems with ≥2× safety margin against transients
I_C (continuous)	2.5A - enables direct drive of small DC motors, fans, or solenoids without external buffering
V_CE(sat)	≤95mV @ 1A/100mA - reduces conduction loss to <95mW at 1A, critical for thermally constrained SOT23 layouts
R_CE(sat)	80mΩ - quantifies on-resistance equivalent for loss modeling in PWM-controlled loads
f_T	175MHz - ensures stable amplification and fast turn-off in high-frequency switch-mode control loops
R_θJA	69°C/W - achievable only with 50mm × 50mm 2oz copper pad; defines maximum power dissipation under real PCB conditions
h_FE	40–900 - wide gain spread requires careful base current design across load current range

Pinout & Package

Package: SOT23 - surface-mount plastic package (0.008g weight), UL 94V-0 rated, matte tin-plated leads, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Connected to ground or low-side return path; must handle full load current with minimal trace inductance
2 (Base)	Control input	Driven by logic-level or dedicated gate driver; requires ≥250mA peak for full 2.5A saturation
3 (Collector)	Current source terminal	Connected to load high-side; withstands 100V blocking and handles 2.5A continuous conduction

Key Features

Feature	Design Value
Low saturation voltage	V_CE(sat) ≤ 95mV @ 1A enables <100mW conduction loss in space-constrained SOT23 footprint
High breakdown rating	BV_CEO = 100V and BV_CEX = 180V support reliable operation in industrial 48V systems with surge immunity
High-current capability	2.5A I_C continuous rating allows direct replacement of larger SOT89 or TO-252 devices in cost-sensitive designs
Fast switching	175MHz f_T and 16.4ns delay time enable use in >500kHz DC-DC controllers without added gate drivers
Automotive-ready construction	Epitaxial planar die and IATF 16949 manufacturing qualify it for AEC-Q101 stress-tested automotive subsystems

Applications

DC-DC Converters

DC Fan Control

Use Scenario: High-efficiency buck converter output stage in telecom power supplies.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier switch replacing Schottky diode.

Use Value: Reduces conduction loss by >40% vs. 100V Schottky, improving efficiency at 1A–2A load currents.

Use Scenario: Speed-regulated 24V/48V cooling fan in industrial PLC enclosures.

IC Role / Device Role / Timing Role: PWM-driven low-side switch controlling fan motor current.

Use Value: Enables precise 10–100% duty-cycle control with <100mV dropout, minimizing heat generation in sealed housings.

Motor Control

Lamp & Solenoid Driving

Use Scenario: Bidirectional H-bridge half-bridge leg for 12V–48V brushed DC motors in robotics.

IC Role / Device Role / Timing Role: High-current NPN switch in complementary pair with ZXTP25100DFH PNP.

Use Value: Supports 2.5A stall current with <95mV saturation, reducing thermal derating in compact motor drivers.

Use Scenario: On/off control of 12V LED arrays and 24V solenoid valves in building automation panels.

IC Role / Device Role / Timing Role: General-purpose load switch interfacing microcontroller GPIO.

Use Value: Eliminates need for external flyback protection in inductive loads due to 180V V_CEX blocking capability.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN low-saturation transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXTN2010F	V_CEO = 60V, I_C = 1.5A, V_CE(sat) = 110mV @ 1A - lower voltage/current rating	Suitable only for ≤24V systems; insufficient for 48V bus transients	Select when cost is primary constraint and voltage margin <2× is acceptable
MJD122G	TO-220 package, V_CEO = 100V, I_C = 8A, V_CE(sat) = 1.5V @ 3A - higher saturation, larger footprint	Requires heatsink for >1A; incompatible with space-constrained SMT layouts	Choose only when >3A peak current or forced-air cooling is required

Compared with ZXTN2010F and MJD122G, ZXTN25100DFHTA uniquely balances 100V blocking, 2.5A current, and ultra-low 95mV saturation in SOT23 - enabling higher power density than ZXTN2010F and eliminating heatsink dependency unlike MJD122G.

Availability

ZXTN25100DFHTA is available at Aetrix Electronics and suitable for DC-DC converters, motor controls, and lamp/solenoid driving requiring stable component supply and automotive-grade reliability.

Supply support for ZXTN25100DFHTA 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

ZXTN25100DFHTA belongs to Diodes' ZXT series of high-voltage, high-gain bipolar transistors - engineered specifically for high-efficiency, high-reliability switching in industrial power management and automotive subsystems.

FAQ

Is ZXTN25100DFHTA qualified for automotive applications?

Yes - while not pre-certified to AEC-Q101 out-of-box, it is manufactured in IATF 16949 certified facilities and supports PPAP documentation. Diodes offers AEC-Q101 qualification upon request for volume automotive programs, leveraging its epitaxial planar process and 150°C max operating temperature.

What is the recommended PCB layout for thermal performance?

For R_θJA = 69°C/W, use a 50mm × 50mm × 1.6mm FR4 board with 2oz copper on one side covering the SOT23 pad area. The emitter pad must be directly connected to a large ground plane; collector and base pads require minimum 0.5mm trace width and thermal vias to inner layers if ambient exceeds +85°C.

Can ZXTN25100DFHTA replace a MOSFET in low-side switching?

It can replace low-voltage logic-level MOSFETs in ≤2.5A, ≤100V applications where gate drive simplicity and cost matter more than zero-threshold operation. Unlike MOSFETs, it requires sustained base current (250mA at 2.5A), but offers superior SOA and avalanche ruggedness without external snubbers.

What is the meaning of "1B5" marking on the device?

"1B5" is the top-side product type marking code per Diodes' SOT23 labeling standard - uniquely identifying ZXTN25100DFHTA among other ZXT-series transistors. It corresponds to the full part number and is used for automated optical inspection and traceability during assembly.

ZXTN25100DFHTA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 2.5 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 330mV @ 250mA, 2.5A

Current - Collector Cutoff (Max):: 50nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 300 @ 10mA, 2V

Power - Max:: 1.25 W

Frequency - Transition:: 175MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

ZXTN25100DFHTA FAQ

1.How can I place an order for ZXTN25100DFHTA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXTN25100DFHTA 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 ZXTN25100DFHTA reliable?

The price and inventory of ZXTN25100DFHTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN25100DFHTA is usually 5 days.

3.What payment methods are accepted for ZXTN25100DFHTA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN25100DFHTA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXTN25100DFHTA?

ZXTN25100DFHTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXTN25100DFHTA 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 ZXTN25100DFHTA?

For technical support, including ZXTN25100DFHTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN25100DFHTA requirements.

6.How does Aetrix verify that ZXTN25100DFHTA is sourced from the original manufacturer or authorized distributors?

All ZXTN25100DFHTA 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 ZXTN25100DFHTA meets industry standards.

7.What is the process for return or replacement of ZXTN25100DFHTA?

All ZXTN25100DFHTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN25100DFHTA, 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 ZXTN25100DFHTA part is unused and in its original packaging.

Return procedure for ZXTN25100DFHTA:

1.Submit a request within 90 days.

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

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