Nexperia USA Inc. BZT52H-C2V7-QX

Overview

BZT52H-C2V7-Q from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 2.7 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation. It operates with 500 Ω max differential resistance and supports reverse current ≤20 μA at 1 V.

For engineers reviewing the BZT52H-C2V7-Q datasheet, BZT52H-C2V7-Q pinout, BZT52H-C2V7-Q application, or BZT52H-C2V7-Q equivalent, this part serves as a precision low-voltage reference in power supply feedback loops, overvoltage clamping circuits, and ESD-protected sensor biasing networks where thermal stability and automotive-grade reliability are required.

Technical Context

This Zener diode functions as a two-terminal voltage reference device operating in reverse breakdown mode, with a temperature coefficient of −3.5 to 0.0 mV/K across its operating current range. Its junction-to-ambient thermal resistance is 330 K/W on standard FR4 PCB, enabling stable regulation under transient load conditions.

The device exhibits 0.9 V forward voltage at 10 mA and maintains ≤20 μA reverse leakage at VR = 1 V, supporting low-power standby regulation. Its non-repetitive peak reverse current capability is 6.0 A (tp = 100 μs), suitable for transient suppression in 12 V automotive subsystems.

Key Specifications

Pinout & Package

SOD123F surface-mount plastic package: 2-pin, flat lead, cathode-marked with bar; dimensions 3.6 mm × 1.7 mm × 1.0 mm; optimized for reflow soldering on FR4 PCB with single-sided copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZT52H-C2V7-Q, the BZT52H-B2V7-Q offers improved regulation accuracy and lower impedance for feedback-critical roles, while MMSZ5223BS-7-F provides footprint compatibility at reduced reliability assurance-making the C-grade optimal for cost-constrained automotive clamping where ±5 % tolerance suffices.

Availability

BZT52H-C2V7-Q is available at Aetrix Electronics and suitable for automotive ECU design, body electronics manufacturing, and ADAS camera module production requiring stable component supply with AEC-Q101 traceability.

Supply support for BZT52H-C2V7-Q 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 leadership in automotive-qualified components.

The BZT52H-Q series belongs to Nexperia's automotive Zener diode product line, engineered specifically for voltage regulation and transient protection in harsh-environment vehicle subsystems.

FAQ

What is the maximum reverse voltage this diode can withstand before breakdown?

The BZT52H-C2V7-Q has a nominal Zener voltage of 2.7 V at 5 mA test current, with guaranteed breakdown between 2.50 V and 2.90 V. Its absolute maximum reverse voltage is not defined separately-it operates in controlled breakdown; exceeding 830 mW power dissipation or 150 °C junction temperature risks permanent damage.

Can this Zener diode be used in parallel for higher power handling?

No-Zener diodes exhibit negative temperature coefficients and mismatched characteristics, causing current hogging when paralleled. For higher power, use a single higher-rated device like BZT52H-C3V3-Q (3.3 V) or implement external current-sharing resistors, though that degrades regulation accuracy and is not recommended per Nexperia guidelines.

Is the SOD123F package compatible with standard reflow profiles?

Yes-the SOD123F package is qualified for lead-free reflow soldering per JEDEC J-STD-020. Recommended peak temperature is 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s. The datasheet specifies reflow footprint dimensions and thermal pad layout to ensure reliable joint formation without tombstoning.

How does the ±5 % tolerance affect regulation accuracy in a 12 V automotive system?

In a 12 V system using this diode for clamping or reference, ±5 % tolerance means the actual breakdown voltage falls between 2.50 V and 2.90 V. This variation is acceptable for non-critical biasing or overvoltage limiting but insufficient for precision ADC references-where ±1 % or ±2 % variants (A/B grades) would be preferred.