Diodes Incorporated BZT52C10-13

Overview

BZT52C10-13 from Diodes Incorporated is a surface-mount 10 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±6% zener voltage tolerance (9.4–10.6 V), 20 Ω typical zener impedance at 5 mA, and 0.2 µA maximum reverse leakage at 8.0 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the BZT52C10-13 datasheet, BZT52C10-13 pinout, BZT52C10-13 application, or BZT52C10-13 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (RθJA = 338 °C/W), junction-to-lead thermal performance (RθJL = 150 °C/W), AEC-Q101 qualification status, and SOD123 footprint compatibility with automated assembly processes.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying current loads. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (20 Ω @ 5 mA), while the SOD123 package enables high-density PCB layouts and supports reflow soldering per J-STD-020 Level 1 moisture sensitivity.

The device exhibits a positive temperature coefficient of +4.5 mV/°C near 10 V, enabling predictable drift compensation in temperature-stable references. It is qualified to AEC-Q101 for automotive applications and features matte tin-plated alloy 42 leads for reliable solderability and halogen/antimony-free "Green" molding compound compliant with RoHS 2 (2011/65/EU).

Key Specifications

Pinout & Package

Package: SOD123 - surface-mount plastic case with cathode band marking, 1.55 mm width, 2.65 mm length, 1.05 mm height, and 0.57 mm lead pitch. Designed for tape-and-reel handling (10,000 pcs/reel) and compatible with standard pick-and-place equipment.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5240BS-7-F and BZX84-C10-7-F, BZT52C10-13 offers superior thermal performance (R_θJA = 338 °C/W vs. 300 °C/W), higher power rating at ambient (370 mW), and identical AEC-Q101 qualification - making it optimal for thermally demanding automotive and industrial applications where regulation stability under temperature swing is critical.

Availability

BZT52C10-13 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog input protection, and consumer power supply feedback requiring stable component supply, full RoHS 2 compliance, and AEC-Q101 reliability assurance.

Supply support for BZT52C10-13 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, manufacturing, and sales operations across Asia, Europe, and North America.

The BZT52 series belongs to Diodes' general-purpose Zener diode product line, engineered for cost-effective, high-yield voltage regulation and transient suppression in automotive, industrial, and consumer power management systems.

FAQ

What is the maximum reverse voltage before breakdown for BZT52C10-13?

The nominal zener voltage is 10 V with a guaranteed range of 9.4 V to 10.6 V at 5 mA test current. Breakdown begins at the lower limit (9.4 V), and the device enters full regulation above this point. It is not rated for sustained operation below 9.4 V in reverse bias - forward conduction occurs at ~0.9 V.

Can BZT52C10-13 be used in place of a 1N4740A?

No - the 1N4740A is a through-hole DO-41 device rated for 1 W power dissipation and 10 V ±5%, whereas BZT52C10-13 is SOD123-packaged with 370 mW ambient rating and ±6% tolerance. Physical, thermal, and electrical profiles differ significantly; direct substitution requires PCB redesign and thermal validation.

Does BZT52C10-13 have a specified capacitance value?

No specific capacitance is listed in the datasheet for BZT52C10-13. Figure 5 shows typical total capacitance for the BZT52C series ranging from ~10 pF to 40 pF depending on nominal zener voltage, but no discrete value is provided for the 10 V variant. For high-frequency filtering applications, measurement or simulation is recommended.

Is the cathode band polarity consistent across all BZT52Cxx variants?

Yes - all BZT52Cxx devices use identical SOD123 packaging with a single cathode band marking adjacent to the cathode terminal. The top-view marking code (e.g., "WF" for BZT52C10) is always positioned toward the cathode end, confirming unambiguous polarity orientation for automated optical inspection and placement.