Diodes Incorporated BZT585B6V2T-7

Overview

BZT585B6V2T-7 from Diodes Incorporated is a precision surface-mount Zener diode with nominal 6.2 V breakdown voltage (±2.0% tolerance), 350 mW power dissipation, and 10 Ω dynamic impedance at 5 mA test current. It operates across –65 °C to +150 °C, features SOD523 package, and serves as a stable voltage reference or overvoltage clamp in low-power analog and power management circuits.

For engineers reviewing the BZT585B6V2T-7 datasheet, BZT585B6V2T-7 pinout, BZT585B6V2T-7 application, or BZT585B6V2T-7 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (357 °C/W), cathode-band polarity marking, low-profile SOD523 footprint compatibility, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This Zener diode uses silicon PN-junction technology optimized for tight voltage regulation under low-current bias (IZT = 5 mA). Its ±2.0% VZ tolerance and 2.2 mV/°C positive temperature coefficient ensure predictable drift behavior near room temperature, supporting stable reference generation in battery-powered sensors and microcontroller reset circuits.

The device exhibits 250 pF junction capacitance at 0 V and 3 µA maximum reverse leakage at rated VR = 4 V, enabling use in moderate-frequency voltage clamping and noise-sensitive analog signal conditioning where parasitic capacitance must remain below 300 pF.

Key Specifications

Pinout & Package

Two-terminal device in SOD523 package: anode and cathode marked by a visible cathode band on the top surface. The cathode terminal connects to the Zener's P-side and must be biased more positive than the anode to achieve reverse breakdown.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ4687T1G and BZX84-C6V2, BZT585B6V2T-7 offers tighter voltage tolerance, smaller SOD523 footprint, and AEC-Q101 qualification-making it optimal for space-constrained, high-reliability automotive and industrial sensing nodes where reference stability and qualification matter.

Availability

BZT585B6V2T-7 is available at Aetrix Electronics and suitable for automotive cabin sensors, USB interface protection, and industrial 4–20 mA loop monitors requiring stable component supply with guaranteed long-term availability.

Supply support for BZT585B6V2T-7 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, headquartered in Plano, Texas, with design centers across Asia and Europe.

The BZT585 series belongs to Diodes' precision Zener diode product line, engineered specifically for high-stability voltage reference and clamping in automotive, industrial, and portable electronics where tight tolerance and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum reverse current specification for BZT585B6V2T-7 at 4 V?

The maximum reverse current (IR) is 3 µA at VR = 4 V and TA = 25 °C, per Electrical Characteristics Table on page 2 of DS36638 Rev. 5–2. This value remains valid up to +125 °C, with typical IR increasing to ~15 µA at elevated temperature but staying within safe operating limits for low-power bias networks.

Does BZT585B6V2T-7 have a defined forward voltage drop?

Yes: VF is specified as 0.9 V minimum and 1.1 V maximum at IF = 10 mA, and 1.1 V maximum at IF = 100 mA. These values reflect silicon diode forward conduction behavior and are relevant when used in dual-role configurations (e.g., reverse-clamp + forward-protection) or polarity-sensitive circuits.

Is the SOD523 package lead-free and RoHS compliant?

Yes - BZT585B6V2T-7 is fully lead-free and RoHS 2 compliant (2011/65/EU), with matte tin plating over Alloy 42 leadframe. It meets UL 94V-0 flammability rating and is classified as "Green" per Diodes' definition: <900 ppm bromine, <900 ppm chlorine, and <1000 ppm antimony compounds.

How does the 2.2 mV/°C temperature coefficient affect circuit design?

The +2.2 mV/°C TC means VZ increases by ~0.13 V over a 60 °C span (e.g., 25 °C to 85 °C). For applications requiring <1% voltage stability, this drift must be accounted for via compensation or operating within narrower ambient ranges; it is acceptable for non-critical clamping where ±5% margin exists.