Diodes Incorporated BZT52C24-13

Overview

BZT52C24-13 from Diodes Incorporated is a surface-mount 24 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±5% zener voltage tolerance (22.8–25.6 V), 70 Ω maximum zener impedance at 5 mA test current, and 0.1 µA maximum reverse leakage at 18.4 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog and power supply feedback circuits.

For engineers reviewing the BZT52C24-13 datasheet, BZT52C24-13 pinout, BZT52C24-13 application, or BZT52C24-13 equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOD123 mechanical layout, and AEC-Q101-qualified alternatives for automotive and industrial designs requiring stable 24 V regulation under transient conditions.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain a stable 24 V reference across its cathode–anode terminals when biased above its nominal zener voltage. Its planar die construction ensures consistent breakdown characteristics and low temperature coefficient (±0.08%/°C typical) over –65°C to +150°C operating range.

The device exhibits 150 °C/W junction-to-lead thermal resistance and requires FR-4 PCB mounting with 1-inch copper pad for rated 370 mW dissipation at +25°C ambient. Power derating follows linear curve down to zero at +150°C ambient per Figure 1.

Key Specifications

Pinout & Package

SOD123 package: molded plastic case, UL 94V-0 flammability rating, matte tin-plated alloy 42 leadframe, cathode band polarity marking, 0.010 g weight. Dimensions: L = 0.25–0.40 mm, D = 1.40–1.70 mm, E = 2.55–2.85 mm, He = 3.55–3.85 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ5242B-7-F and BZX84-C24, BZT52C24-13 offers superior zener impedance (70 Ω vs. ≥100 Ω) and higher ambient-rated power (370 mW), making it preferred for precision 24 V regulation in automotive and industrial feedback systems where thermal margin and voltage stability are critical.

Availability

BZT52C24-13 is available at Aetrix Electronics and suitable for industrial power supply feedback, automotive load dump protection, and medical sensor bias networks requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for BZT52C24-13 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 and manufacturing operations across Asia and the Americas.

The BZT52 series belongs to Diodes' general-purpose Zener diode product line, engineered for medium-current voltage regulation and transient suppression in cost-sensitive, high-volume applications including automotive, industrial, and consumer electronics.

FAQ

What is the maximum reverse voltage (V_R) at which BZT52C24-13 guarantees ≤0.1 µA leakage?

The datasheet specifies 0.1 µA maximum reverse current at V_R = 18.4 V. This value is measured under controlled 25°C conditions and defines the voltage below which leakage remains negligible in bias networks. Exceeding 18.4 V increases leakage exponentially as the device approaches breakdown.

Can BZT52C24-13 be used in place of a 22 V Zener for overvoltage protection?

No - its nominal 24 V rating and 22.8 V minimum breakdown voltage exceed typical 22 V protection thresholds. Using it risks delayed clamping during transients, potentially damaging downstream 22 V-rated components. A BZT52C22 or equivalent with 20.8–23.3 V range is appropriate for 22 V system protection.

Is the SOD123 package compatible with standard reflow profiles for lead-free soldering?

Yes - the device is qualified for Pb-free reflow per J-STD-020, with peak temperature up to 260°C and 60-second duration above 217°C. Its matte tin finish and alloy 42 leadframe ensure reliable wetting and joint integrity under IPC-A-610 Class 2 requirements.

Does BZT52C24-13 meet AEC-Q101 for all variants, or only specific part numbers?

AEC-Q101 qualification applies only to parts marked with "Q" suffix (e.g., BZT52C24Q-13-F). The commercial-grade BZT52C24-13 is not AEC-Q101 qualified, though it shares identical die and package construction. For automotive applications, the Q-suffix variant must be specified and sourced.