Nexperia USA Inc. BZT52H-C22,115

Overview

BZT52H-C22,115 from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 22 V nominal breakdown voltage at I_Z = 5 mA, with 830 mW total power dissipation and 220 Ω maximum differential resistance. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.

For engineers reviewing the BZT52H-C22,115 datasheet, BZT52H-C22,115 pinout, BZT52H-C22,115 application, or BZT52H-C22,115 equivalent, this part serves as a surface-mount voltage reference with verified thermal resistance (R_th(j-sp) = 70 K/W), stable temperature coefficient (+15.4 mV/K), and non-repetitive surge capability up to 1.25 A.

Technical Context

This Zener diode operates in reverse-bias breakdown mode to maintain a stable 22 V reference across its terminals under regulated current conditions (IZ = 5 mA). Its design supports operation from −65 °C to +150 °C ambient, with junction temperature limited to 150 °C.

The device exhibits a positive temperature coefficient of +15.4 mV/K at I_Z = 5 mA, indicating voltage increases linearly with temperature-critical for thermal drift compensation in precision references. Reverse leakage remains ≤0.05 μA at VR = 17.6 V, ensuring low quiescent error in high-impedance bias networks.

Key Specifications

Pinout & Package

SOD123F is a small flat-lead surface-mount plastic package (3.6 mm × 2.7 mm × 1.2 mm) with gull-wing leads optimized for reflow soldering on FR4 PCBs. Cathode marked by a bar on the body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZT52C22-7-F and MMSZ5247B-TP, the BZT52H-C22,115 offers superior thermal performance (R_th(j-sp) = 70 K/W), tighter production consistency in SOD123F mounting geometry, and higher surge robustness-making it preferred for industrial power supplies and automotive-adjacent systems requiring long-term stability.

Availability

BZT52H-C22,115 is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and LED current regulation requiring stable component supply and consistent parametric performance across production lots.

Supply support for BZT52H-C22,115 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, headquartered in Nijmegen, Netherlands.

The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-sensitive yet thermally demanding applications in industrial power management, consumer electronics, and automotive-qualified adjacent systems.

FAQ

What is the maximum continuous reverse current for BZT52H-C22,115 at 25 °C ambient?

The device supports a maximum continuous reverse current of 250 mA, derived from its 830 mW power rating and 22 V breakdown voltage (P = V × I → I = 830 mW / 22 V ≈ 37.7 mA typical; absolute max I_Z is specified as 250 mA in limiting values table). This limit ensures junction temperature stays below 150 °C under defined PCB mounting conditions.

Can BZT52H-C22,115 be used in automotive applications?

No-this part is explicitly non-automotive qualified per Nexperia's revision history (Rev. 7 notes "Products changed to non-automotive qualification"). Automotive use requires the -Q qualified variants (e.g., BZT52H-C22-Q), which undergo AEC-Q200 stress testing and have different screening and traceability protocols.

How does the ±5 % tolerance affect regulation accuracy in a 22 V reference circuit?

At 22 V nominal, ±5 % tolerance means the actual breakdown voltage falls between 20.8 V and 23.3 V at I_Z = 5 mA. In practice, this introduces up to ±1.15 V initial error in open-loop references, requiring calibration or trimming in precision systems-but remains acceptable for coarse voltage setting, clamping, or bias generation where absolute accuracy is secondary to stability and repeatability.

What is the significance of the SOD123F package's 70 K/W junction-to-solder-point thermal resistance?

R_th(j-sp) = 70 K/W quantifies how efficiently heat transfers from the silicon junction to the cathode solder pad. With this value, a 500 mW dissipation yields ~35 °C temperature rise above pad temperature-enabling accurate thermal modeling when designing copper pour areas and predicting long-term reliability under sustained load, especially critical in enclosed or high-ambient environments.