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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Diodes Incorporated ZVN0545ASTOA

Name: ZVN0545ASTOA
Brand: Diodes Incorporated
SKU: ZVN0545ASTOA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZVN0545ASTOA

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: E-Line-3

Datasheet:: ZVN0545ASTOA.pdf

Description:: MOSFET N-CH 450V 90MA E-LINE

Quantity:: RFQ Add To RFQ list

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Inventory:2,295

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Product details

Overview

ZVN0545ASTOA from Zetex Semiconductors (now Diodes Incorporated) is an N-channel enhancement-mode vertical DMOS FET rated for 450 V drain-source voltage, 50 Ω R_DS(on), and 90 mA continuous drain current at 25°C ambient. It operates as a high-voltage switching device in low-power AC/DC flyback snubber circuits and isolated gate driver bias supplies.

For engineers reviewing the ZVN0545ASTOA datasheet, ZVN0545ASTOA pinout, ZVN0545ASTOA application, or ZVN0545ASTOA equivalent, key selection criteria include verified 450 V BVDSS, guaranteed R_DS(on) ≤ 50 Ω at V_GS = 10 V, ID(on) ≥ 150 mA under 25 V conditions, and TO-92-compatible E-line packaging for through-hole board integration.

Technical Context

This discrete MOSFET uses vertical DMOS construction to achieve high breakdown voltage with moderate on-resistance in a low-cost through-hole package. Its gate threshold voltage range of 1–3 V enables direct drive from logic-level controllers without level-shifting.

Designed for linear and switching operation in low-current, high-voltage bias rails, it exhibits 70 pF input capacitance and 16 ns turn-off delay at 25 V, supporting stable operation up to several hundred kHz in snubber and auxiliary supply topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	450 V - supports direct connection to 380 V DC bus or rectified 277 V AC mains without derating
R_DS(on)	50 Ω - delivers ≥150 mA output at V_GS = 10 V, suitable for <100 mW bias rail loads
I_D (continuous)	90 mA - defines maximum steady-state current in thermally unheatsinked TO-92 layout
BV_DSS	450 V (min) - measured at I_D = 1 mA, V_GS = 0 V; ensures margin over 400 V transient spikes
C_iss	70 pF - limits gate drive power requirement to <10 µW at 100 kHz switching
t_d(off)	16 ns - enables clean turn-off in fast-decay snubber networks with minimal shoot-through risk

Pinout & Package

Supplied in E-line TO-92 compatible package (3-357), with leads arranged in Drain–Gate–Source order when viewed from front with flat side up and leads down.

Pin/Terminal	Circuit Role	Design Meaning
Lead 1 (left)	Drain	Main high-voltage current path; electrically connected to die substrate; requires clearance >2.5 mm at 450 V
Lead 2 (center)	Gate	Control terminal; sensitive to ESD; requires <100 Ω series resistance for robust switching
Lead 3 (right)	Source	Reference node for gate drive; tied to local ground or negative rail in high-side configurations

Key Features

Feature	Design Value
High-voltage capability	Guaranteed 450 V BVDSS enables use in universal-input offline power supply auxiliary rails
Low gate charge	70 pF Ciss and 4 pF Crss minimize Miller effect, easing drive design in isolated feedback paths
Thermal robustness	−55°C to +150°C operating range supports deployment in sealed industrial enclosures without forced cooling
Logic-level compatible	1–3 V VGS(th) allows direct interface with 3.3 V or 5 V microcontrollers in control logic

Applications

AC/DC Auxiliary Bias Supply

Flyback Snubber Network

Use Scenario: Provides isolated 12–24 V bias to PWM controller ICs in offline SMPS designs.

IC Role / Device Role / Timing Role: High-voltage switch regulating current into Zener-clamped RC network.

Use Value: Delivers stable bias under 450 V transients while dissipating <700 mW in TO-92 footprint.

Use Scenario: Clamps voltage spikes across primary winding during MOSFET turn-off in discontinuous conduction mode.

IC Role / Device Role / Timing Role: Fast-switching clamp element absorbing leakage inductance energy.

Use Value: 16 ns t_d(off) and 10 ns t_f ensure precise timing alignment with main switch dead time.

Isolated Gate Driver Bias

High-Voltage Level Shift

Use Scenario: Generates floating supply for high-side gate drivers in half-bridge motor control stages.

IC Role / Device Role / Timing Role: Series-pass regulator element referenced to floating ground.

Use Value: 50 Ω R_DS(on) sets predictable dropout and thermal profile in unheatsinked layout.

Use Scenario: Translates logic signals across 300+ V potential differences in HV sensing interfaces.

IC Role / Device Role / Timing Role: Voltage-level translator using source-follower configuration.

Use Value: 100 mS g_fs ensures adequate small-signal gain for clean edge transmission at 100 kHz.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage N-channel switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZVN4525GTA	Lower V_DS (450 V → 400 V), lower R_DS(on) (25 Ω), same TO-92 package	Higher current capability but reduced voltage margin; unsuitable for 380 V DC bus	Select only if system max voltage ≤ 350 V and ≥150 mA load required
DMN45D0L-7	45 V V_DS, 0.045 Ω R_DS(on), SOT-23 package, logic-level gate	Not voltage-compatible; intended for low-side 5–12 V switching, not HV bias	Reject for any application requiring >100 V blocking; incompatible topology

Compared with ZVN0545ASTOA, ZVN4525GTA trades voltage headroom for lower conduction loss, while DMN45D0L-7 belongs to a different voltage class entirely-neither serves as drop-in replacement, and selection must prioritize BVDSS compliance first.

Availability

ZVN0545ASTOA is available at Aetrix Electronics and suitable for AC/DC auxiliary bias supplies, flyback snubber networks, and isolated gate driver bias rails requiring stable component supply across extended temperature and high-voltage stress conditions.

Supply support for ZVN0545ASTOA 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

Zetex Semiconductors, now part of Diodes Incorporated, specialized in high-performance discrete semiconductors for power management and signal conditioning.

The ZVN series targets cost-sensitive, high-reliability linear and switching applications in offline power conversion, where voltage rating, thermal stability, and TO-92 compatibility are critical.

FAQ

What is the maximum safe operating voltage for ZVN0545ASTOA in continuous DC applications?

The absolute maximum drain-source voltage is 450 V, with minimum guaranteed breakdown at 450 V (BVDSS, ID = 1 mA). For reliable long-term operation, design should limit continuous VDS to ≤ 380 V to maintain ≥15% voltage margin against transients and temperature-induced drift.

Can ZVN0545ASTOA be driven directly by a 3.3 V microcontroller GPIO?

Yes-its gate threshold voltage ranges from 1 V to 3 V, so a 3.3 V output can fully enhance the channel. However, due to 70 pF input capacitance, ensure the GPIO can sink/source ≥5 mA peak during switching to achieve specified 7 ns rise/fall times.

Is ZVN0545ASTOA suitable for use in avalanche mode?

No-this device is not rated or characterized for repetitive avalanche operation. The datasheet specifies only single-pulse avalanche energy limits, and no SOA curve is provided. Operation beyond safe operating area must be avoided.

How does the TO-92 package affect thermal performance in sustained 90 mA operation?

At 25°C ambient, the TO-92 package limits continuous power dissipation to 700 mW. With 50 Ω RDS(on), 90 mA yields 405 mW, staying within limit-but PCB copper area and airflow must be validated to prevent junction temperature exceeding 150°C under worst-case ambient conditions.

ZVN0545ASTOA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: E-Line-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 450 V

Current - Continuous Drain (Id) @ 25°C:: 90mA (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 50Ohm @ 100mA, 10V

Vgs(th) (Max) @ Id:: 3V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 70 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 700mW (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: E-Line (TO-92 compatible)

ZVN0545ASTOA FAQ

1.How can I place an order for ZVN0545ASTOA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZVN0545ASTOA 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 ZVN0545ASTOA reliable?

The price and inventory of ZVN0545ASTOA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZVN0545ASTOA is usually 5 days.

3.What payment methods are accepted for ZVN0545ASTOA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZVN0545ASTOA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZVN0545ASTOA?

ZVN0545ASTOA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZVN0545ASTOA 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 ZVN0545ASTOA?

For technical support, including ZVN0545ASTOA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZVN0545ASTOA requirements.

6.How does Aetrix verify that ZVN0545ASTOA is sourced from the original manufacturer or authorized distributors?

All ZVN0545ASTOA 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 ZVN0545ASTOA meets industry standards.

7.What is the process for return or replacement of ZVN0545ASTOA?

All ZVN0545ASTOA units undergo pre-shipment inspection (PSI). If there is an issue with ZVN0545ASTOA, 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 ZVN0545ASTOA part is unused and in its original packaging.

Return procedure for ZVN0545ASTOA:

1.Submit a request within 90 days.

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

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