Diodes Incorporated ZVN1409ASTOA

Overview

ZVN1409ASTOA from Diodes Incorporated is an N-channel enhancement-mode vertical DMOS FET rated for 90 V drain-source voltage, 10 mA continuous drain current, and 250 Ω R_DS(on) at V_GS = 10 V. It delivers fast switching (t_d(on) = 0.3 ns, t_r = 0.5 ns) with low input capacitance (C_iss = 6.5 pF), suited for low-power signal switching in analog front-ends and precision bias networks.

For engineers reviewing the ZVN1409ASTOA datasheet, ZVN1409ASTOA pinout, ZVN1409ASTOA application, or ZVN1409ASTOA equivalent, key selection criteria include its 90 V V_DS, sub-100 nA gate leakage, temperature-stable V_GS(th) (0.8–2.4 V), low C_oss (3 pF), and TO-92-compatible E-line package for through-hole prototyping and space-constrained analog stages.

Technical Context

This discrete MOSFET operates in enhancement mode with a threshold voltage range of 0.8–2.4 V at I_D = 0.1 mA, enabling reliable turn-on with standard logic-level gate drive. Its vertical DMOS structure supports stable R_DS(on) across −55°C to +150°C junction temperature, with normalized on-resistance variation under ±20% over full T_j.

Designed for low-current switching rather than power handling, it exhibits minimal capacitive coupling (C_rss = 0.65 pF) and fast transient response-critical for sample-and-hold circuits, multiplexer guarding, and high-impedance node isolation where charge injection and feedthrough must be minimized.

Key Specifications

Pinout & Package

Supplied in an E-line TO-92 compatible package (standard 3-lead through-hole plastic case), with leads arranged in Drain–Gate–Source order when viewed from the flat side with leads down.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-current signal switching applications.

Compared with ZVN2110A and 2N7002K, the ZVN1409ASTOA uniquely balances 90 V capability, sub-7 pF input capacitance, and TO-92 serviceability-making it optimal for legacy instrumentation, repair, and low-noise analog switching where voltage headroom and capacitive transparency are non-negotiable.

Availability

ZVN1409ASTOA is available at Aetrix Electronics and suitable for instrumentation multiplexing, high-voltage bias switching, sample-and-hold guarding, and analog test point isolation requiring stable component supply and long-term obsolescence resilience.

Supply support for ZVN1409ASTOA 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, application-optimized components for industrial, computing, and communications markets.

The ZVN series targets precision analog switching and low-leakage signal routing, emphasizing voltage robustness, thermal stability, and low parasitic capacitance for metrology-grade system design.

FAQ

Is ZVN1409ASTOA suitable for 5 V logic-level gate drive?

Yes. Its gate threshold voltage ranges from 0.8 V to 2.4 V at I_D = 0.1 mA, ensuring reliable turn-on with standard 3.3 V and 5 V CMOS outputs. At V_GS = 5 V, typical I_D(on) exceeds 5 mA with R_DS(on) < 400 Ω, sufficient for most signal-switching loads.

What is the maximum safe operating voltage for ZVN1409ASTOA in continuous DC applications?

The absolute maximum drain-source voltage is 90 V, but for reliable long-term operation, Diodes Incorporated specifies 72 V at T_j = 125°C per the IDSS limit (100 µA). Derating to 72 V ensures margin against transients and thermal drift in sealed enclosures.

Can ZVN1409ASTOA replace ZVN1409A in existing designs?

Yes. ZVN1409ASTOA is a direct form-fit-function replacement for ZVN1409A, sharing identical electrical specifications, TO-92 pinout (D-G-S), thermal ratings, and packaging dimensions. The "STOA" suffix denotes tape-and-reel packaging for automated assembly; lead-free compliance is identical.

Does ZVN1409ASTOA require gate protection diodes in typical use?

No. With ±20 V gate-source voltage rating and <100 nA leakage up to that limit, external gate protection is unnecessary for standard logic-driven applications. However, in systems exposed to ESD-prone connectors or relay-coil flyback, a 10 kΩ series gate resistor plus 10 V Zener clamp is recommended per Diodes Incorporated AN-2001.