Nexperia USA Inc. BZX84-A36,215

Overview

BZX84-A36,215 from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 36 V nominal breakdown voltage at 2 mA, 250 mW total power dissipation, and 45 Ω maximum differential resistance - used for precision voltage reference and overvoltage protection in low-power analog sensor interfaces and microcontroller I/O rail clamping.

For engineers reviewing the BZX84-A36,215 datasheet, BZX84-A36,215 pinout, BZX84-A36,215 application, or BZX84-A36,215 equivalent, this part supports stable 36 V regulation under transient reverse surges up to 40 W (100 μs), operates across –55 °C to +150 °C ambient, and delivers <0.5 μA reverse leakage at 28.8 V - critical for battery-powered voltage monitoring and ESD-tolerant signal conditioning.

Technical Context

This Zener diode operates in reverse-biased avalanche mode with tightly controlled 35.64 V to 36.36 V breakdown range (±1 %) at I_Z = 2 mA. Its temperature coefficient of +0.05 mV/K ensures minimal drift over industrial temperature ranges, and its 45 Ω dynamic impedance enables stable regulation under varying load currents.

The device features non-repetitive peak reverse power dissipation of 40 W (100 μs square wave, T_j = 25 °C), junction-to-ambient thermal resistance of 500 K/W on FR4 PCB, and reverse current ≤0.5 μA at VR = 28.8 V - confirming suitability for transient suppression and precision biasing in space-constrained SMD designs.

Key Specifications

Pinout & Package

Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with 1.9 mm × 1.1 mm footprint and 1.2 mm height - optimized for automated reflow assembly and high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5226BS-7-F and BZX84-C36-7-F, BZX84-A36,215 provides tighter voltage control (±1 % vs. ±5 %), lower dynamic impedance (45 Ω vs. ≥70 Ω), and identical surge capability - making it the preferred choice for precision reference and high-reliability clamping where regulation accuracy directly impacts measurement fidelity or protection integrity.

Availability

BZX84-A36,215 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, microcontroller I/O protection, and low-power voltage monitor applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for BZX84-A36,215 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.

The BZX84 series belongs to Nexperia's precision Zener regulator product line, engineered specifically for stable voltage reference and transient suppression in space-constrained, low-power SMD applications across industrial, computing, and consumer electronics.

FAQ

What is the maximum reverse voltage before breakdown for BZX84-A36,215?

The guaranteed minimum breakdown voltage is 35.64 V at I_Z = 2 mA per datasheet Table 9. At VR = 28.8 V (80 % of nominal), reverse current remains ≤0.5 μA - confirming reliable blocking behavior well below the knee point. This margin ensures predictable turn-on only during intended overvoltage events.

Can BZX84-A36,215 be used in parallel for higher power dissipation?

No - Zener diodes exhibit negative temperature coefficients and mismatched V_Z tolerances, causing current hogging and thermal runaway when paralleled. For >250 mW needs, use a single higher-rated device (e.g., BZX85 series in DO-35) or active regulation with a transistor buffer.

Is the n.c. pin (pin 2) electrically isolated or thermally coupled?

Pin 2 is internally unconnected - no bond wire or die attachment. It is electrically isolated but contributes to thermal conduction: the SOT23 package's center leadframe acts as a heat spreader, so leaving pin 2 unconnected on PCB does not impair thermal resistance (R_th(j-sp) = 330 K/W to cathode solder point).

How does temperature affect regulation accuracy in BZX84-A36,215?

Its temperature coefficient is +0.05 mV/K at I_Z = 2 mA, meaning V_Z increases by ~3.6 mV over a 72 K rise (–40 °C to +85 °C). Combined with ±1 % initial tolerance, total variation stays within ±1.4 % - acceptable for most non-precision references but insufficient for metrology-grade applications.