Nexperia USA Inc. BZT5250H-B2V0-QX

Overview

BZT5250H-B2V0-QX from Nexperia is a low-current Zener diode in SOD123F package, rated for 2.0 V nominal Zener voltage at 50 µA test current, ±2 % tolerance, and 830 mW total power dissipation. It functions as a precision voltage reference or regulator in low-bias circuits, especially in automotive body electronics requiring AEC-Q101 qualification.

For engineers reviewing the BZT5250H-B2V0-QX datasheet, BZT5250H-B2V0-QX pinout, BZT5250H-B2V0-QX application, or BZT5250H-B2V0-QX equivalent, key selection criteria include its 2.0 V regulation at ultra-low 50 µA current, 600 Ω differential resistance at 5 mA, -3.5 mV/K temperature coefficient, and AEC-Q101 qualification for under-hood sensor biasing and ECU power-rail monitoring.

Technical Context

This Zener diode operates in reverse breakdown mode with a tightly controlled 2.0 V nominal Zener voltage (1.96–2.04 V) at I_Z = 50 µA, optimized for stable low-current regulation. Its differential resistance of ≤600 Ω at 5 mA ensures minimal voltage shift under small load variations.

The device exhibits a negative temperature coefficient of −3.5 mV/K, enabling predictable thermal drift in ambient ranges from −55 °C to +150 °C. It is qualified per AEC-Q101 and features intentional leakage control for noise reduction in automotive signal conditioning paths.

Key Specifications

Pinout & Package

SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile, cathode marked by bar on top surface.

Key Features

Applications

Availability

BZT5250H-B2V0-QX is available at Aetrix Electronics and suitable for automotive body electronics, sensor biasing, and low-power ECU subsystems requiring stable component supply with AEC-Q101 compliance and long-term lifecycle continuity.

Supply support for BZT5250H-B2V0-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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, designed specifically for low-current voltage regulation in automotive signal conditioning, sensor interfaces, and power-rail monitoring where space, power, and reliability are critical.

FAQ

What is the maximum reverse voltage before breakdown for BZT5250H-B2V0-QX?

The device is specified for Zener breakdown at 1.96–2.04 V when tested at 50 µA. Its absolute maximum non-repetitive peak reverse voltage is not defined independently; instead, it is limited by P_ZSM = 40 W for 100 µs pulses. At DC, operation above 2.04 V will cause increasing reverse current-up to 1.0 µA at 1.0 V reverse bias and >100 µA near 2.0 V-per Figure 5 in the datasheet.

Can BZT5250H-B2V0-QX be used in place of a 2.0 V shunt reference IC?

Yes, but only in low-precision, low-current applications (<1 mA). Unlike integrated shunt references (e.g., TLV431), it lacks bandgap temperature compensation and has higher TC (−3.5 mV/K vs. ±100 ppm/°C). It delivers adequate stability for cost-sensitive automotive sensor biasing where ±2 % initial accuracy and moderate thermal drift are acceptable.

Is the SOD123F package compatible with standard reflow profiles?

Yes-the SOD123F package is qualified for lead-free reflow soldering per J-STD-020. The recommended footprint (Figure 10) uses 1.2 mm × 1.1 mm solder lands with 0.55 mm pitch. Peak temperature must not exceed 260 °C, and time above 217 °C should be 60–150 seconds. No wave soldering or hand-soldering is recommended.

How does the "B" suffix differ from "C" in BZT5250H-B2V0-QX?

The "B" suffix denotes ±2 % Zener voltage tolerance (1.96–2.04 V), while "C" indicates approximately ±5 % (1.88–2.12 V). Both share identical package, thermal specs, and AEC-Q101 qualification. The "B" grade is selected where tighter regulation is required-such as in ADC reference chains or comparator thresholds-without adding external trimming components.