onsemi BZX84C6V2LT1

Overview

BZX84C6V2LT1 from onsemi is a 6.2 V, ±5% tolerance Zener diode in SOT-23 package, rated for 225 mW power dissipation at 25°C on FR-5 board, with 10 Ω dynamic impedance at 5 mA test current and 6 µA reverse leakage at 4.7 V, used for voltage regulation and reference in space-constrained portable electronics.

For engineers reviewing the BZX84C6V2LT1 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, cathode-anode polarity mapping, and direct alternatives for low-power precision clamping and biasing circuits.

Technical Context

This device operates as a two-terminal voltage reference by exploiting controlled reverse breakdown in a silicon PN junction. Its nominal 6.2 V Zener voltage is specified at 5 mA (IZT1), with tight 10 Ω Zener impedance ensuring stable regulation under varying load currents.

The SOT-23 package features pin 1 (anode), pin 2 (no connection), and pin 3 (cathode), with polarity marked by a band on the cathode end. Temperature coefficient is +0.4 mV/°C, indicating slight positive drift above 25°C - critical for temperature-sensitive references.

Key Specifications

Pinout & Package

SOT-23 (Case 318, Style 8) surface-mount plastic package with void-free thermosetting epoxy, corrosion-resistant finish, and UL 94 V-0 flammability rating. Cathode indicated by polarity band.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Compared with BZX84C6V2LT1, the BZX84C6V2LT3 offers identical regulation performance with higher reel quantity for production efficiency, while BZX84B6V2LT1 trades wider tolerance for tighter voltage control - enabling higher-accuracy references without changing layout or thermal design.

Availability

BZX84C6V2LT1 is available at Aetrix Electronics and suitable for cellular phone power management, handheld portable reference, and high-density PC board clamping requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for BZX84C6V2LT1 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 focused on energy-efficient innovation for automotive, industrial, cloud, and intelligent edge applications.

The BZX84C6V2LT1 belongs to the BZX84CxxxLT1 series of standard-tolerance Zener diodes designed specifically for compact, low-power voltage regulation in portable and high-density electronic systems.

FAQ

What is the Zener voltage tolerance of BZX84C6V2LT1?

The BZX84C6V2LT1 has a nominal Zener voltage of 6.2 V with a tolerance of ±5%, meaning the actual measured voltage falls between 5.8 V and 6.6 V when tested at 5 mA (IZT). This tolerance is defined per the "standard tolerance" series in the onsemi datasheet and applies across the full operating temperature range of −65°C to +150°C.

Does BZX84C6V2LT1 have a built-in capacitor or ESD protection?

The BZX84C6V2LT1 is a discrete Zener diode with no integrated capacitor or active ESD circuitry. However, it exhibits 185 pF junction capacitance at 0 V bias and is rated for Class 3 HBM ESD robustness (>16 kV), making it suitable as a passive clamping element in ESD protection networks - but external series resistance is required for full IEC 61000-4-2 compliance.

Can BZX84C6V2LT1 replace BZX84C6V2LT3 in a design?

Yes, BZX84C6V2LT1 can directly replace BZX84C6V2LT3 because both share identical electrical specifications, thermal ratings, and SOT-23 mechanical dimensions. The only difference is packaging: BZX84C6V2LT1 ships in 3,000-piece tape-and-reel format, while BZX84C6V2LT3 uses a 10,000-piece reel. No PCB or schematic changes are needed.

What is the maximum power dissipation of BZX84C6V2LT1 at 70°C ambient?

At 70°C ambient, the BZX84C6V2LT1's maximum power dissipation is reduced from 225 mW (at 25°C) by derating 1.8 mW/°C. The allowable reduction is (70 − 25) × 1.8 = 81 mW, resulting in a maximum dissipation of 225 − 81 = 144 mW. This value assumes mounting on FR-5 board per datasheet Note 1.

Is there a Pb-free version of BZX84C6V2LT1 available?

Yes, the Pb-free version is designated BZX84C6V2LT1G and is functionally identical to BZX84C6V2LT1 in all electrical, thermal, and mechanical parameters. It complies with RoHS Directive 2011/65/EU and uses lead-free terminations compatible with standard SnAgCu reflow profiles.