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

Diodes Incorporated ZVP4424ASTOB

Name: ZVP4424ASTOB
Brand: Diodes Incorporated
SKU: ZVP4424ASTOB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZVP4424ASTOB

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: E-Line-3

Datasheet:: ZVP4424ASTOB.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:7,194

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Product details

Overview

ZVP4424ASTOB 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 at 25°C ambient. It serves as a high-voltage electronic hook switch in telecom line interface circuits.

For engineers reviewing the ZVP4424ASTOB datasheet, ZVP4424ASTOB pinout, ZVP4424ASTOB application, or ZVP4424ASTOB equivalent, key selection criteria include verified −240 V BVDSS, gate threshold range of −0.7 to −2.0 V, low 750 mW power dissipation in TO-92, and confirmed −1 A pulsed drain capability under defined test conditions.

Technical Context

This device operates as a normally-off P-channel MOSFET with vertical DMOS structure optimized for high-voltage blocking and moderate-current switching in DC-coupled line interface applications. Its −2.0 V maximum V_GS(th) ensures reliable turn-on with standard negative gate drive, while 125 mS typical transconductance supports stable current regulation at −0.2 A.

Thermal performance is defined by a 150°C maximum junction temperature and normalized R_DS(on) drift of ≤2.4× over −50°C to +125°C. Switching parameters-including 8–15 ns turn-on delay and 20–30 ns fall time-are characterized with 50 Ω source impedance and −50 V V_DD, confirming suitability for controlled edge-rate switching in telephony circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	−240 V: Maximum sustained drain-to-source blocking voltage before avalanche breakdown.
R_DS(on)	9 Ω max at V_GS = −10 V, I_D = −200 mA: On-resistance directly impacts conduction loss and thermal rise in steady-state hook-switch operation.
I_D (cont)	−200 mA at T_amb = 25°C: Continuous current rating defining safe DC load handling without derating.
P_tot	750 mW at T_amb = 25°C: Total package power dissipation limit determining heatsinking requirements in TO-92.
V_GS(th)	−0.7 to −2.0 V at I_D = −1 mA: Gate threshold range ensuring predictable turn-on with low-negative bias, critical for analog line control.
g_fs	125 mS typical at V_DS = −10 V, I_D = −0.2 A: Transconductance value governing small-signal gain and current regulation precision.
C_iss	100–200 pF at V_DS = −25 V: Input capacitance affecting gate drive energy and switching speed in high-impedance line interfaces.

Pinout & Package

Supplied in E-Line TO-92 compatible package (standard 3-lead plastic transistor outline), with leads identified as Drain (D), Gate (G), and Source (S) per manufacturer marking and mechanical drawing ZVP4424A.

Pin/Terminal	Circuit Role	Design Meaning
Drain (D)	High-voltage current sink terminal	Connected to −48 V telecom line or battery return; must withstand −240 V transient surges.
Gate (G)	Control electrode for channel conduction	Receives negative logic-level drive; threshold sensitivity enables direct microcontroller interfacing via level-shifting.
Source (S)	Reference node for gate drive and current return	Biased at system ground or floating reference; defines V_GS potential and sets operating point for hook-switch state.

Key Features

Feature	Design Value
High-voltage blocking	−240 V BVDSS enables direct use in −48 V telecom systems with margin for lightning-induced transients.
Low gate threshold	V_GS(th) down to −0.7 V allows reliable turn-on using simple resistive or open-collector negative drivers.
TO-92 compatibility	E-Line TO-92 footprint supports legacy PCB layouts and manual assembly without retooling.
Controlled switching speed	26–40 ns turn-off delay and 20–30 ns fall time minimize cross-conduction and EMI in line-interface timing windows.
Thermal stability	Normalized R_DS(on) variation ≤2.4× across −50°C to +125°C ensures consistent on-state behavior in uncontrolled environments.

Applications

Telecom Line Interface

Electronic Hook Switch

Use Scenario: Isolating and controlling DC feed to analog telephone lines during on-hook/off-hook transitions.

IC Role / Device Role / Timing Role: High-voltage P-channel switch managing −48 V loop current path with precise state retention.

Use Value: −240 V BVDSS provides 5× safety margin over nominal −48 V line voltage, reducing surge-related field failures.

Use Scenario: Replacing mechanical hook switches in VoIP adapters and PBX line cards.

IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical contacts, enabling silent, bounce-free switching.

Use Value: 9 Ω R_DS(on) limits on-state voltage drop to <1.8 V at 200 mA, preserving sufficient loop current for central-office detection.

DC Power Control

Alarm Circuit Supervision

Use Scenario: Enabling/disabling −24 V or −48 V auxiliary power rails in industrial control panels.

IC Role / Device Role / Timing Role: High-side DC switch with gate referenced to system ground for simplified driver design.

Use Value: −200 mA continuous rating supports driving relays, LEDs, or sensor bias networks without external heatsinking.

Use Scenario: Monitoring integrity of supervised alarm loops in fire/security systems.

IC Role / Device Role / Timing Role: Current-sensing switch that interrupts loop current upon fault detection for status reporting.

Use Value: Low 100 µA max IDSS at −190 V ensures minimal leakage current during supervision, preventing false alarms.

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
ZVP3306A	−60 V BVDSS, 3.5 Ω R_DS(on), TO-92	Lower voltage rating restricts use to sub-−30 V systems; higher current capability not needed in hook-switch role.	Select only when −60 V rating suffices and lower on-resistance justifies cost premium.
DMN24H3D5L	−250 V BVDSS, 5.5 Ω R_DS(on), SOT-23	Smaller SOT-23 package reduces board area but requires re-layout; higher thermal resistance limits continuous current to −150 mA.	Prefer for space-constrained designs where −150 mA rating meets functional requirement and thermal management is feasible.

Compared with ZVP4424ASTOB, ZVP3306A trades voltage headroom for lower R_DS(on), while DMN24H3D5L offers higher BVDSS and smaller footprint at the cost of reduced current capacity and altered thermal behavior in TO-92-replacement scenarios.

Availability

ZVP4424ASTOB is available at Aetrix Electronics and suitable for telecom line interface, electronic hook switch, and DC power control applications requiring stable component supply and long-term obsolescence management.

Supply support for ZVP4424ASTOB 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.

ZVP4424ASTOB belongs to the ZVP series of high-voltage P-channel MOSFETs designed specifically for telecom line interface and electronic hook-switch functions in −48 V systems.

FAQ

What is the maximum gate-source voltage rating for ZVP4424ASTOB?

The absolute maximum V_GS is ±40 V. Exceeding this rating risks permanent gate oxide damage. In practice, gate drive should be limited to −10 V for full enhancement and −3.5 V for partial conduction, both well within the safe operating range and validated in the electrical characteristics table.

Can ZVP4424ASTOB be used in surface-mount designs?

No - ZVP4424ASTOB is exclusively offered in through-hole E-Line TO-92 packaging. It lacks an SMT variant. For surface-mount alternatives, consider Diodes Incorporated's DMN24H3D5L (SOT-23) or ON Semiconductor's NTMFS4C09N (SO-8), both requiring layout revision and thermal reassessment.

How does temperature affect R_DS(on) in ZVP4424ASTOB?

R_DS(on) increases with junction temperature: normalized values show ~1.8× increase at +125°C versus 25°C, and ~2.4× at +150°C. This positive temperature coefficient aids current sharing in parallel configurations and prevents thermal runaway under overload.

Is ZVP4424ASTOB suitable for PWM switching above 10 kHz?

Yes - measured switching times (td(on) = 8–15 ns, tf = 20–30 ns) support clean edges up to ~500 kHz. However, due to its 750 mW power limit and TO-92 thermal resistance, average power must remain below 300 mW at 25°C ambient to avoid exceeding 150°C junction temperature during PWM operation.

ZVP4424ASTOB 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)

ZVP4424ASTOB FAQ

1.How can I place an order for ZVP4424ASTOB through Aetrix?

Please submit a Request for Quotation (RFQ) for ZVP4424ASTOB 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 ZVP4424ASTOB reliable?

The price and inventory of ZVP4424ASTOB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZVP4424ASTOB is usually 5 days.

3.What payment methods are accepted for ZVP4424ASTOB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZVP4424ASTOB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZVP4424ASTOB?

ZVP4424ASTOB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZVP4424ASTOB 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 ZVP4424ASTOB?

For technical support, including ZVP4424ASTOB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZVP4424ASTOB requirements.

6.How does Aetrix verify that ZVP4424ASTOB is sourced from the original manufacturer or authorized distributors?

All ZVP4424ASTOB 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 ZVP4424ASTOB meets industry standards.

7.What is the process for return or replacement of ZVP4424ASTOB?

All ZVP4424ASTOB units undergo pre-shipment inspection (PSI). If there is an issue with ZVP4424ASTOB, 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 ZVP4424ASTOB part is unused and in its original packaging.

Return procedure for ZVP4424ASTOB:

1.Submit a request within 90 days.

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

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