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

Diodes Incorporated ZVP4424ASTOA

Name: ZVP4424ASTOA
Brand: Diodes Incorporated
SKU: ZVP4424ASTOA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZVP4424ASTOA

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: E-Line-3

Datasheet:: ZVP4424ASTOA.pdf

Description:: MOSFET P-CH 240V 200MA E-LINE

Quantity:: RFQ Add To RFQ list

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Inventory:2,461

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Product details

Overview

ZVP4424ASTOA from Zetex Semiconductors (now Diodes Incorporated) is a P-channel enhancement-mode vertical DMOS FET rated for −240 V drain-source voltage, 9 Ω R_DS(on) at V_GS = −10 V and I_D = −200 mA, with −200 mA continuous drain current and 750 mW power dissipation in TO-92 package. It serves as a high-voltage electronic hook switch in telecom line interface circuits.

For engineers reviewing the ZVP4424ASTOA datasheet, ZVP4424ASTOA pinout, ZVP4424ASTOA application, or ZVP4424ASTOA equivalent, key selection criteria include verified −240 V BVDSS, gate threshold range of −0.7 to −2.0 V, low 9 Ω on-resistance at −10 V drive, and TO-92 thermal derating behavior up to +150 °C junction temperature.

Technical Context

This device operates as a normally-off P-channel MOSFET with vertical DMOS structure optimized for high-voltage switching in low-current analog signal paths. Its gate threshold voltage (−0.7 to −2.0 V) enables direct control from standard logic-level negative supplies, and its low input capacitance (C_iss = 100–200 pF) supports fast switching with minimal drive burden.

The −240 V breakdown rating and −100 µA IDSS at −190 V/125 °C confirm robust blocking capability in harsh telecom environments. Static R_DS(on) remains stable across temperature due to normalized on-resistance curves showing <20% variation from −50 °C to +125 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS max	−240 V - supports full telephone line ringing voltage (−170 V typical) with 41% safety margin
R_DS(on)	9 Ω @ V_GS = −10 V, I_D = −200 mA - ensures ≤1.8 V conduction drop at rated current
I_D cont	−200 mA - sufficient for hook-switch current in analog telephony and PBX line cards
P_tot	750 mW @ T_amb = 25 °C - requires heatsinking or ambient derating above 50 °C
V_GS(th)	−0.7 to −2.0 V - compatible with −3.3 V or −5 V logic-driven gate control without level shifters
C_iss	100–200 pF @ V_DS = −25 V - limits switching speed but avoids EMI issues in low-frequency hook-switch operation
t_d(off)	26–40 ns - enables sub-100 ns total turn-off for precise timing in call progress detection

Pinout & Package

Package: TO-92 (E-Line compatible), through-hole, 3-pin plastic case with D-G-S pin order (viewed from flat side, leads down).

Pin/Terminal	Circuit Role	Design Meaning
Drain (D)	High-voltage current sink	Connected to telephone line tip/ring; must withstand −240 V transients and sustain −200 mA load
Gate (G)	Control electrode	Receives negative logic-level voltage; ±40 V absolute rating prevents damage during hot-swap or ESD events
Source (S)	Reference node / current return	Biased at system ground or negative supply; forms common return path for hook-switch current loop

Key Features

Feature	Design Value
Vertical DMOS construction	Enables −240 V BVDSS in compact TO-92 footprint without punch-through or avalanche degradation
Low V_GS(th) range	−0.7 to −2.0 V allows direct drive from −3.3 V microcontroller GPIO or dedicated line interface ICs
Stable R_DS(on) vs temperature	Normalized curve shows ≤20% drift from −50 °C to +125 °C - critical for unregulated telecom environments
Low C_oss and C_rss	C_oss = 18–25 pF, C_rss = 5–15 pF - minimizes Miller effect and improves gate drive efficiency

Applications

Telephone Line Hook Switch

Ring Detection Circuit

Use Scenario: Controlling connection/disconnection of subscriber line to central office during on-hook/off-hook states in analog telephony.

IC Role / Device Role / Timing Role: High-voltage P-channel switch isolating DC loop current path while blocking ringing AC voltage.

Use Value: −240 V BVDSS provides headroom against peak −170 V ring signals; 9 Ω R_DS(on) limits voltage drop to <1.8 V at 200 mA loop current.

Use Scenario: Detecting presence of ringing voltage on POTS line without loading or distorting the signal.

IC Role / Device Role / Timing Role: Low-leakage high-impedance switch enabling sampling of ring waveform via optocoupler or comparator input.

Use Value: IDSS ≤ −100 µA at −190 V/125 °C ensures minimal false-triggering; low C_iss preserves signal integrity up to 20 Hz.

SLIC Interface Protection

Off-Hook Supervision

Use Scenario: Protecting SLIC (Subscriber Line Interface Circuit) outputs from overvoltage transients during line disconnection.

IC Role / Device Role / Timing Role: Clamping and isolation element placed between SLIC output and line transformer primary.

Use Value: −240 V rating exceeds GR-909 lightning surge requirements; TO-92 package allows placement near transformer for shortest trace length.

Use Scenario: Monitoring DC loop current to determine off-hook condition in VoIP gateway or fax modem.

IC Role / Device Role / Timing Role: Current-sensing switch in series with line feed resistor to generate measurable voltage drop.

Use Value: Stable R_DS(on) enables accurate current measurement; low V_GS(th) ensures reliable turn-on with minimal bias overhead.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZVP3354A	−400 V BVDSS, 15 Ω R_DS(on), TO-92	Higher voltage margin but higher on-resistance increases conduction loss	Preferred where lightning immunity > −240 V is required, e.g., outdoor line cards
DMN24H3D5L	−250 V BVDSS, 7.5 Ω R_DS(on), SOT-23	Lower R_DS(on) but surface-mount only; lower power rating (350 mW)	Suitable for space-constrained designs accepting reduced power handling and no through-hole option

Compared with ZVP4424ASTOA, ZVP3354A trades higher voltage rating for increased on-resistance and larger die size, while DMN24H3D5L offers better efficiency in compact layouts but lacks TO-92 mechanical robustness and thermal mass for sustained 200 mA operation.

Availability

ZVP4424ASTOA is available at Aetrix Electronics and suitable for telephone line interface, ring detection, SLIC protection, and off-hook supervision requiring stable component supply in legacy telecom and industrial analog systems.

Supply support for ZVP4424ASTOA 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, acquired by Diodes Incorporated in 2008, specialized in high-performance discrete semiconductors for analog and power applications before integration into Diodes' portfolio.

ZVP4424ASTOA belongs to Zetex's high-voltage vertical DMOS FET product line, designed specifically for telecom line interface functions including hook switch, ring detect, and SLIC protection in POTS and hybrid voice systems.

FAQ

What is the maximum safe operating voltage for ZVP4424ASTOA in continuous DC blocking?

The absolute maximum drain-source voltage is −240 V, validated under pulsed conditions with I_D = −1 mA and V_GS = 0 V. For continuous DC blocking, design margin should limit steady-state V_DS to ≤−190 V per GR-909 telecom standards, ensuring long-term reliability under temperature and aging stress.

Can ZVP4424ASTOA be driven directly from a 3.3 V microcontroller GPIO?

No - it requires a negative gate drive relative to source. A −3.3 V or −5 V supply referenced to source is needed. Direct 3.3 V GPIO cannot turn it on; an inverting level shifter or charge-pump circuit is required to generate the necessary −0.7 to −2.0 V V_GS(th) threshold swing.

How does thermal performance change above 25 °C ambient?

Power dissipation derates linearly: 750 mW at 25 °C drops to zero at 150 °C. The derating factor is 7.5 mW/°C above 25 °C. At 70 °C ambient, maximum allowable P_tot is 412.5 mW - requiring careful PCB copper area design or forced airflow for sustained −200 mA operation.

Is ZVP4424ASTOA RoHS compliant and lead-free?

Yes - Diodes Incorporated confirms ZVP4424ASTOA meets RoHS Directive 2011/65/EU and is lead-free, with matte tin (Sn) lead finish. The TO-92 package uses halogen-free molding compound and complies with JEDEC J-STD-020 moisture sensitivity level MSL3.

ZVP4424ASTOA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: E-Line-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 240 V

Current - Continuous Drain (Id) @ 25°C:: 200mA (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 3.5V, 10V

Rds On (Max) @ Id, Vgs:: 9Ohm @ 200mA, 10V

Vgs(th) (Max) @ Id:: 2V @ 1mA

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

Vgs (Max):: ±40V

Input Capacitance (Ciss) (Max) @ Vds:: 200 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 750mW (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

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

ZVP4424ASTOA FAQ

1.How can I place an order for ZVP4424ASTOA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZVP4424ASTOA 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 ZVP4424ASTOA reliable?

The price and inventory of ZVP4424ASTOA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZVP4424ASTOA is usually 5 days.

3.What payment methods are accepted for ZVP4424ASTOA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZVP4424ASTOA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZVP4424ASTOA?

ZVP4424ASTOA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZVP4424ASTOA 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 ZVP4424ASTOA?

For technical support, including ZVP4424ASTOA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZVP4424ASTOA requirements.

6.How does Aetrix verify that ZVP4424ASTOA is sourced from the original manufacturer or authorized distributors?

All ZVP4424ASTOA 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 ZVP4424ASTOA meets industry standards.

7.What is the process for return or replacement of ZVP4424ASTOA?

All ZVP4424ASTOA units undergo pre-shipment inspection (PSI). If there is an issue with ZVP4424ASTOA, 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 ZVP4424ASTOA part is unused and in its original packaging.

Return procedure for ZVP4424ASTOA:

1.Submit a request within 90 days.

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

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