onsemi 2N5462

Overview

2N5462 from onsemi is a P-channel depletion-mode JFET amplifier optimized for low-noise, high-input-impedance analog signal conditioning. It delivers IDSS = −4.0 to −16 mA, VGS(off) = 1.8 to 9.0 V, |yfs| = 2000–6000 mhos, en = 60–115 nV/√Hz, and operates with VDG = VGSR = 40 Vdc - used in audio preamps, sensor front-ends, and precision current sources.

For engineers reviewing the 2N5462 datasheet, pinout, applications, or equivalent options, key selection criteria include verified gate-source cutoff voltage range, zero-gate-voltage drain current tolerance, forward transfer admittance at 1 kHz, noise performance at 100 Hz, and TO-92 thermal derating behavior under continuous DC bias.

Technical Context

The 2N5462 functions as a voltage-controlled current source in common-source configuration, with depletion-mode operation enabling normally-on biasing without external gate bias networks. Its transconductance (|yfs|) and output resistance (ross) are specified at VDS = 15 Vdc and f = 1.0 kHz, supporting stable small-signal amplification in linear analog stages.

Designed for DC-coupled and low-frequency AC applications up to 30 MHz, the device exhibits Ciss = 5.0–7.0 pF and Crss = 1.0–2.0 pF at VDS = 15 Vdc and f = 1.0 MHz, ensuring predictable Miller effect and bandwidth limitation in high-gain amplifier topologies.

Key Specifications

Pinout & Package

2N5462 uses the TO-92 package (Case 29, Style 7), a through-hole plastic package with 3 leads and standard 0.1" lead spacing. Thermal resistance θJA is not explicitly rated but follows typical TO-92 limits (~200°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar JFET amplifier applications.

Compared with J310 and 2N5484, the 2N5462 provides the widest IDSS and VGS(off) ranges among standard P-channel JFETs in TO-92, enabling robust self-biasing and superior low-frequency noise performance in high-impedance analog signal chains.

Availability

2N5462 is available at Aetrix Electronics and suitable for audio pre-amplifiers, precision current sources, instrumentation front-ends, and RF detector bias stages requiring stable component supply and long-term manufacturability.

Supply support for 2N5462 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The 2N5462 belongs to onsemi's legacy JFET amplifier product line, designed specifically for high-input-impedance, low-noise analog signal conditioning in cost-sensitive, through-hole-based industrial and audio systems.

FAQ

What is the maximum drain-source voltage rating for the 2N5462?

The 2N5462 does not specify a maximum VDS rating in its datasheet. Its absolute maximum ratings define VDG = 40 Vdc and VGSR = 40 Vdc. Since it is a P-channel JFET, VDS must remain within the bounds imposed by these junction limits - typically VDS ≤ |VDG| under normal bias conditions. Designers should ensure VDS does not exceed 40 Vdc in practice.

Does the 2N5462 have Pb-free packaging options?

Yes, the 2N5462G variant is the Pb-free version of the 2N5462, packaged in the same TO-92 outline. The "G" suffix denotes compliance with RoHS Directive 2011/65/EU. Both 2N5462 and 2N5462G share identical electrical specifications and thermal characteristics per the onsemi datasheet.

How does the 2N5462 differ from the 2N5460 and 2N5461 in terms of key parameters?

The 2N5462 differs from the 2N5460 and 2N5461 in its wider parameter ranges: IDSS = −4.0 to −16 mA (vs. −1.0 to −5.0 mA for 2N5460 and −2.0 to −9.0 mA for 2N5461), VGS(off) = 1.8 to 9.0 V (vs. 0.75–6.0 V and 1.0–7.5 V), and |yfs| = 2000–6000 mhos (vs. 1000–4000 and 1500–5000 mhos). These make the 2N5462 optimal for higher-gain, higher-current analog stages.

Can the 2N5462 be used in surface-mount designs?

No - the 2N5462 is only offered in the through-hole TO-92 package (Case 29, Style 7). onsemi does not list an SMT variant (e.g., SOT-23 or SC-70) for the 2N5462. For surface-mount compatibility, engineers should evaluate alternatives like the MMBFJ310 (SOT-23) or SSM2212 (SOIC-8 dual JFET), though functional equivalence requires full circuit revalidation.

What is the typical gate leakage current for the 2N5462 at 20 Vdc?

The typical gate leakage current (IGSS) for the 2N5462 is ≤ 5.0 nAdc at VGS = 20 Vdc and TA = 25°C, as specified in the "ELECTRICAL CHARACTERISTICS" table. This ultra-low leakage supports high-impedance node stability in precision measurement circuits where input bias current must remain below 10 nA.