Diodes Incorporated LZ52C13W

Overview

LZ52C13W from Diodes Incorporated is a surface-mount Zener diode with a nominal reverse breakdown voltage of 13 V (12.74–13.26 V), ±2% tolerance, 500 mW power dissipation, and 26 Ω dynamic impedance at 5 mA test current. It serves as a precision voltage reference or overvoltage clamp in low-power analog and power supply regulation circuits.

For engineers reviewing the LZ52C13W datasheet, LZ52C13W pinout, LZ52C13W application, or LZ52C13W equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (300 °C/W), low leakage (<0.1 µA at 10 V), ultra-small 1206 package footprint, and RoHS-compliant lead-free plating.

Technical Context

This Zener diode uses silicon epitaxial planar construction to achieve stable reverse breakdown characteristics across -65 °C to +175 °C operating temperature. Its 2% V_Z tolerance and low Z_ZT (26 Ω) support tight-regulation feedback paths in DC-DC converters and sensor biasing networks.

The device operates with 5 mA test current and exhibits <0.1 µA reverse leakage at 10 V, enabling low-quiescent-current voltage references. Its 1206 package delivers 500 mW total power dissipation with a junction-to-ambient thermal resistance of 300 °C/W under standard PCB mounting conditions.

Key Specifications

Pinout & Package

Package: 1206 surface-mount ceramic body with cathode indicated by color band; terminals are lead-free plated; weight ≈10 mg.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584-C13 and MMSZ5242B, LZ52C13W offers superior voltage accuracy and lower dynamic impedance in a thermally robust 1206 package-critical for stable reference generation where ±2% tolerance and low Z_ZT directly impact system measurement fidelity.

Availability

LZ52C13W is available at Aetrix Electronics and suitable for power supply voltage reference, sensor biasing network, and overvoltage clamp applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for LZ52C13W 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

This part belongs to the LZ52C series of surface-mount Zener diodes, designed specifically for high-accuracy voltage regulation and clamping in space-constrained, thermally demanding industrial and automotive environments.

FAQ

What is the maximum reverse voltage (V_R) at which leakage remains below 0.1 µA?

The datasheet specifies that reverse leakage (I_R) is ≤0.1 µA at V_R = 10 V. At the rated 13 V Zener voltage, leakage increases slightly but remains well below 1 µA per typical characterization curves. This ensures negligible current draw in high-impedance reference nodes.

Can LZ52C13W be used in place of a 12 V Zener diode for overvoltage protection?

No-it is not a drop-in replacement for 12 V Zeners due to its 13 V nominal breakdown range (12.74–13.26 V). Using it where 12 V clamping is required risks insufficient headroom during transients. Select LZ52C12W (11.76–12.24 V) instead for true 12 V operation.

Is the 1206 package compatible with standard IPC-7351B land patterns?

Yes-the mechanical drawing in DS45096 Rev. 7-3 specifies pad dimensions matching IPC-7351B generic 1206 (3216 metric) land pattern: 2.2 mm length × 1.0 mm width body with 4.2 mm overall length including leads. Recommended solder mask defined pads ensure reliable reflow yield.

Does LZ52C13W meet AEC-Q200 stress testing requirements for automotive use?

No-the datasheet does not list AEC-Q200 qualification. While its -65 °C to +175 °C operating range exceeds automotive ambient requirements, it lacks the specific qualification testing (e.g., temperature cycling, humidity bias, board flex) mandated for AEC-Q200 Grade 2 or Grade 3 components.