Nexperia USA Inc. BZT52H-B3V0,115

Overview

BZT52H-B3V0,115 from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, designed for precision voltage regulation at 3.0 V nominal breakdown voltage with 95 Ω max differential resistance at I_Z = 5 mA and 10 μA max reverse current at V_R = 1.8 V, used in low-power reference and overvoltage protection circuits.

For engineers reviewing the BZT52H-B3V0,115 datasheet, BZT52H-B3V0,115 pinout, BZT52H-B3V0,115 application, or BZT52H-B3V0,115 equivalent, this page delivers verified Zener parameters, thermal resistance (R_th(j-sp) = 150 K/W), forward voltage (V_F ≤ 0.9 V @ 10 mA), power dissipation limits (830 mW), and SOD123F mounting details for surface-mount design validation.

Technical Context

This Zener diode operates in reverse-bias breakdown mode with tightly controlled V_Z = 2.94–3.06 V at I_Z = 5 mA and exhibits a near-zero temperature coefficient (−3.5 to 0.0 mV/K) across its operating range. Its low 95 Ω differential resistance ensures stable regulation under small-signal load variations.

The device uses planar epitaxial construction for repeatable breakdown characteristics and integrates into compact PCB layouts via its 3.4–3.6 mm × 1.0–1.2 mm SOD123F footprint. Thermal performance is defined by R_th(j-a) = 330 K/W (free air) and R_th(j-sp) = 150 K/W (solder point), enabling reliable operation up to T_j = 150 °C.

Key Specifications

Pinout & Package

SOD123F is a 2-lead surface-mount plastic package measuring 3.5 mm × 1.1 mm × 0.9 mm (L × W × H), with cathode marked by a bar on the body and optimized for reflow soldering only.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZT52H-B3V0,115, the BZT52C3V0,115 trades regulation precision for lower unit cost, while the MMSZ4684T1G sacrifices thermal robustness and surge handling for legacy compatibility-neither matches the 830 mW dissipation and ±2 % tolerance combination required for high-reliability 3.0 V reference designs.

Availability

BZT52H-B3V0,115 is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and power supply feedback applications requiring stable component supply, consistent parametric performance, and long-term obsolescence management.

Supply support for BZT52H-B3V0,115 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 solutions, with manufacturing certified to ISO 9001 and IATF 16949 standards.

The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for surface-mounted voltage regulation and clamping in consumer, industrial, and computing applications where space, consistency, and thermal resilience are critical.

FAQ

What is the maximum continuous reverse current the BZT52H-B3V0,115 can sustain?

The device has no specified maximum continuous reverse current; instead, it is rated for total power dissipation of 830 mW at T_amb ≤ 25 °C on an FR4 PCB with 1 cm² cathode pad. At V_Z = 3.0 V, this corresponds to ~277 mA average reverse current before exceeding thermal limits-actual usable current depends on board layout and ambient conditions.

Can the BZT52H-B3V0,115 be used in automotive applications?

No. Per Nexperia's revision history (Rev. 7, Jan 2023), the BZT52H series is explicitly designated as non-automotive qualified. It lacks AEC-Q101 qualification, automotive-grade screening, and extended temperature validation. For automotive use, Nexperia offers separate -Q qualified variants such as BZT52H-B3V0-Q.

How does the temperature coefficient affect regulation accuracy over −65 °C to +150 °C?

At I_Z = 5 mA, the BZT52H-B3V0,115 exhibits a temperature coefficient of −3.5 to 0.0 mV/K. Over a 100 °C rise, this introduces up to ±0.35 V drift-meaning regulation shifts from ~3.03 V at −65 °C to ~2.68 V at +150 °C. System-level compensation or tighter thermal management is required for <±1 % accuracy across full range.

Is the SOD123F package compatible with standard reflow profiles?

Yes. Nexperia specifies reflow soldering as the only recommended method for SOD123F. The package supports JEDEC J-STD-020-compliant profiles, including peak temperatures up to 260 °C for ≤ 30 seconds. Footprint dimensions (2.8 mm × 1.6 mm land, 1.1 mm pad spacing) are provided in Figure 12 of the datasheet for accurate stencil and placement setup.