Nexperia USA Inc. BZT52H-C11,115

Overview

BZT52H-C11,115 from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 11 V nominal breakdown voltage at I_Z = 5 mA, with 830 mW total power dissipation and 70 Ω maximum differential resistance. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits for industrial sensor interfaces and power supply feedback loops.

For engineers reviewing the BZT52H-C11,115 datasheet, BZT52H-C11,115 pinout, BZT52H-C11,115 application, or BZT52H-C11,115 equivalent, this page delivers verified Zener voltage, thermal resistance, reverse current limits, and SOD123F mounting details required for PCB layout, reliability validation, and replacement selection in non-automotive embedded systems.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its ±5 % tolerance (C-series), 10.4 V to 11.6 V working voltage range, and 0.1 mV/K temperature coefficient at I_Z = 5 mA enable predictable regulation in cost-sensitive consumer and industrial designs.

Thermal performance is defined by R_th(j-sp) = 70 K/W (junction-to-solder point) on FR4 PCB with 1 cm² cathode pad, supporting continuous operation up to T_j = 150 °C. Non-repetitive peak reverse current reaches 2.5 A for 100 μs pulses, enabling transient suppression in low-energy surge scenarios.

Key Specifications

Pinout & Package

SOD123F surface-mount plastic package: 2.5–2.7 mm length, 1.0–1.2 mm width, 0.55–0.70 mm height, with flat leads and cathode marking bar.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZT52H-C11,115, BZT52C11-7-F offers identical electrical specs but inferior thermal resistance in a non-flat-lead package, while MMSZ5240BT1G trades voltage match for improved regulation sharpness and leakage-neither is drop-in compatible without layout or schematic revision.

Availability

BZT52H-C11,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, power supply feedback networks, overvoltage clamping circuits, and microcontroller I/O protection requiring stable component supply with consistent parametric performance across production batches.

Supply support for BZT52H-C11,115 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 discrete and logic devices, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.

The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-effective voltage regulation and protection in consumer, industrial, and computing applications where automotive qualification is not required.

FAQ

What is the maximum continuous reverse current for BZT52H-C11,115 at 25 °C ambient?

The device has no specified maximum continuous reverse current; its steady-state limit is governed by power dissipation. At 25 °C ambient, 830 mW P_tot corresponds to ~75.5 mA at 11 V (P = V × I), assuming negligible forward drop. Derating is required above 25 °C per the 150 °C max junction temperature and 150 K/W R_th(j-sp).

Can BZT52H-C11,115 replace BZT52B11 in an existing design?

Yes, but with tolerance impact: BZT52B11 has ±2 % tolerance (10.8–11.2 V), while BZT52H-C11,115 has ±5 % (10.4–11.6 V). If the circuit relies on tight voltage matching-e.g., for ADC reference scaling-the wider tolerance may increase measurement error. Thermal performance is identical (SOD123F package).

Is the SOD123F package compatible with standard reflow profiles for lead-free soldering?

Yes-Nexperia specifies reflow soldering as the only recommended method for SOD123F. The package supports JEDEC J-STD-020D-compliant peak temperatures up to 260 °C, with thermal resistance data (R_th(j-sp) = 70 K/W) derived from standard FR4 PCB footprints defined in Figure 12 of the datasheet.

What is the typical Zener impedance at 1 mA operating current?

At I_Z = 1 mA, the differential resistance r_dif is not explicitly tabulated for the C11 variant, but Table 8 shows r_dif ≤ 70 Ω at I_Z = 5 mA. For I_Z = 1 mA, r_dif increases significantly-typical curves for similar BZT52H-C parts indicate ~200–300 Ω at 1 mA, reflecting reduced conduction efficiency at low bias.