Diodes Incorporated BZX84C36W-7

Overview

BZX84C36W-7 from Diodes Incorporated is a 36 V, 200 mW surface-mount Zener diode in SOT-323 package, with nominal zener voltage 36.0 V (min 34.0 V, max 38.0 V), test current 2.0 mA, and zener impedance 90 Ω at test current. It provides precision voltage regulation in low-power biasing and reference circuits, commonly used in power supply feedback networks and overvoltage protection for microcontroller I/O pins.

For engineers reviewing the BZX84C36W-7 datasheet, BZX84C36W-7 pinout, BZX84C36W-7 application, or BZX84C36W-7 equivalent, key selection criteria include zener voltage tolerance (±5.6%), thermal resistance (625 K/W), reverse leakage (≤0.1 µA at 25.2 V), and SOT-323 footprint compatibility with high-density PCB layouts.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load or input conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (90 Ω at 2.0 mA), while the ultra-small SOT-323 package enables integration into space-constrained consumer and industrial control boards.

The device exhibits a positive temperature coefficient of +30.4 mV/°C at 5 mA, enabling predictable drift compensation in temperature-sensitive references. Its maximum power dissipation is derated linearly above 25°C ambient, reaching zero at 150°C per the published derating curve.

Key Specifications

Pinout & Package

Package: SOT-323 - ultra-compact 3-pin surface-mount plastic case (2.2 mm × 1.35 mm × 0.9 mm), lead-free, RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5275B-7-F and BZX84-C36, BZX84C36W-7 offers superior space efficiency and guaranteed RoHS compliance while maintaining identical zener voltage tolerance and leakage performance - making it optimal for new designs targeting miniaturization and regulatory alignment.

Availability

BZX84C36W-7 is available at Aetrix Electronics and suitable for power supply feedback networks, microcontroller I/O protection, temperature-compensated references, and low-power sensor biasing requiring stable component supply and long-term manufacturability.

Supply support for BZX84C36W-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, serving automotive, industrial, computing, and consumer markets with high-reliability components.

BZX84C36W-7 belongs to the BZX84C series of precision Zener diodes designed specifically for voltage regulation and reference applications in space-constrained, low-power electronic systems.

FAQ

What is the maximum reverse voltage before breakdown for BZX84C36W-7?

The BZX84C36W-7 begins controlled reverse breakdown at its nominal zener voltage of 36.0 V, with a guaranteed range of 34.0 V to 38.0 V at 2.0 mA test current. Below 25.2 V, reverse leakage remains ≤0.1 µA - no significant conduction occurs until the specified zener knee voltage is reached.

Can BZX84C36W-7 be used in series to generate higher reference voltages?

Yes - multiple BZX84C36W-7 diodes can be stacked in series to create higher-voltage references (e.g., two in series yield ~72 V). However, ensure equal current sharing using balancing resistors, as process variation causes slight V_Z mismatches that may lead to uneven power dissipation.

Is the SOT-323 package of BZX84C36W-7 compatible with standard pick-and-place equipment?

Yes - the SOT-323 package meets JEDEC MO-203-AB standards and is fully supported by industry-standard pick-and-place machines. Its 0.65 mm pitch, 1.35 mm width, and defined land pattern (per Diodes AP02001) ensure reliable automated assembly in high-volume manufacturing.

How does temperature affect the zener voltage of BZX84C36W-7 in practical use?

BZX84C36W-7 has a positive temperature coefficient of +30.4 mV/°C at 5 mA, meaning its zener voltage increases by approximately 30 mV per degree Celsius rise. In a 50°C ambient-to-junction rise, this yields ~1.5 V total shift - acceptable for non-critical references but requires compensation in precision metrology applications.