Nexperia USA Inc. BZT52H-A13-QX

Overview

BZT52H-A13-QX from Nexperia is a ±1 % tolerance Zener diode in SOD123F package, rated for 13 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation and reference applications.

For engineers reviewing the BZT52H-A13-QX datasheet, BZT52H-A13-QX pinout, BZT52H-A13-QX application, or BZT52H-A13-QX equivalent, this page delivers verified Zener parameters including V_Z = 12.87–13.13 V, r_dif ≤ 110 Ω, I_R ≤ 10 μA at V_R = 10.4 V, temperature coefficient +0.1 mV/K, and thermal resistance R_th(j-sp) = 150 K/W - all critical for precision biasing and overvoltage clamping in harsh-environment designs.

Technical Context

This Zener diode operates in reverse-biased breakdown mode with tightly controlled V_Z tolerance (±1 %), low differential resistance (≤110 Ω), and minimal temperature drift (+0.1 mV/K at I_Z = 5 mA). Its AEC-Q101 qualification confirms robustness under automotive thermal cycling, humidity, and mechanical stress.

The SOD123F package enables high-density surface-mount placement while maintaining 830 mW power handling at T_amb ≤ 25 °C and junction temperature up to 150 °C. Cathode-anode polarity is marked by a bar on the device body, aligning with standard PCB footprint requirements per Nexperia's reflow soldering guidelines.

Key Specifications

Pinout & Package

SOD123F is a 2-lead surface-mount plastic package measuring 3.6 mm × 1.2 mm × 0.9 mm (L × W × H), with gull-wing leads and cathode polarity indicated by a marking bar on the top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZT52H-B13-Q, the BZT52H-A13-QX offers superior voltage accuracy but at higher unit cost; versus BZX84-C13, it delivers 2.8× higher power handling and automotive qualification - essential for safety-critical or thermally demanding deployments.

Availability

BZT52H-A13-QX is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, power supply protection circuits, and low-power IoT device biasing requiring stable component supply and AEC-Q101 compliance.

Supply support for BZT52H-A13-QX 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 logic, discrete, and MOSFET devices, with core expertise in automotive-qualified components.

The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for precision voltage regulation and clamping in automotive and industrial environments where long-term stability and thermal resilience are mandatory.

FAQ

What is the exact Zener voltage range for BZT52H-A13-QX at 5 mA?

The BZT52H-A13-QX exhibits a guaranteed Zener voltage range of 12.87 V to 13.13 V at I_Z = 5 mA and T_j = 25 °C, reflecting its ±1 % tolerance specification. This range remains stable across operating temperatures due to its +0.1 mV/K temperature coefficient, making it suitable for applications requiring tight voltage references.

Is BZT52H-A13-QX suitable for reflow soldering on standard FR4 PCBs?

Yes - BZT52H-A13-QX uses the SOD123F package, which is qualified for lead-free reflow soldering per JEDEC J-STD-020. Nexperia specifies a recommended footprint with 2.9 mm × 1.6 mm solder lands and 1.1 mm pad spacing, optimized for thermal performance and manufacturability on single-sided FR4 boards with tin-plated copper.

How does the 830 mW power rating translate to real-world thermal design?

The 830 mW rating applies when mounted on an FR4 PCB with a 1 cm² cathode thermal pad. With R_th(j-sp) = 150 K/W, dissipating 500 mW raises the junction temperature by ~75 °C above solder point temperature. Designers must ensure ambient and board-level thermal management keeps T_j ≤ 150 °C, especially in enclosed automotive enclosures.

Can BZT52H-A13-QX replace older BZT52C13S parts in existing designs?

Yes - BZT52H-A13-QX shares identical SOD123F packaging, pinout, and 13 V nominal Zener voltage with BZT52C13S, but adds ±1 % tolerance and AEC-Q101 qualification. Electrical compatibility is confirmed by matching V_Z ranges (BZT52C13S: 12.35–13.65 V) and thermal characteristics; no layout changes are needed for drop-in replacement in automotive upgrades.