Diodes Incorporated BZT52C16S-7-F

Overview

BZT52C16S-7-F from Diodes Incorporated is a surface-mount Zener diode with nominal 16 V zener voltage (15.3–17.1 V range at 5 mA), 200 mW power dissipation, and SOD323 package. It provides precision voltage regulation and overvoltage protection in low-power analog circuits, power supply feedback paths, and reference voltage generation for industrial sensors and automotive control modules.

For engineers reviewing the BZT52C16S-7-F datasheet, BZT52C16S-7-F pinout, BZT52C16S-7-F application, or BZT52C16S-7-F equivalent, key selection criteria include zener voltage tolerance (±3.1%), dynamic impedance (40 Ω @ 5 mA), reverse leakage (0.1 µA @ 10.4 V), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or input conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOD323 package supports high-density PCB layouts and automated reflow assembly.

The device exhibits a positive temperature coefficient of +11.2 mV/°C above 6 V, enabling predictable thermal drift compensation in voltage references. Maximum reverse current is specified at 0.1 µA up to 10.4 V, confirming tight leakage control for low-power standby circuits.

Key Specifications

Pinout & Package

Package: SOD323 - ultra-small plastic surface-mount case with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, and UL 94V-0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ5245B-7-F and BZX84-C16, BZT52C16S-7-F offers the smallest footprint (SOD323), lowest leakage (0.1 µA), and AEC-Q101 qualification-making it optimal for space-constrained, automotive-grade, low-power voltage reference designs.

Availability

BZT52C16S-7-F is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor interfaces, and consumer power adapter feedback circuits requiring stable component supply and AEC-Q101 compliance.

Supply support for BZT52C16S-7-F 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 BZT52C series belongs to Diodes' precision Zener diode product line, engineered specifically for voltage regulation, reference, and protection in automotive, industrial, and consumer power systems where compact size and reliability are critical.

FAQ

What is the maximum reverse voltage before breakdown for BZT52C16S-7-F?

The nominal zener voltage is 16 V, with a guaranteed breakdown range of 15.3 V to 17.1 V at 5 mA test current. Below 10.4 V, reverse leakage remains ≤0.1 µA; breakdown is not abrupt but follows the typical Zener knee curve shown in Figure 2 of DS30093 Rev. 20-2.

Is BZT52C16S-7-F suitable for use in high-frequency signal paths?

Yes - its typical total capacitance is ≈15 pF at 1 V reverse bias (per Figure 4), making it appropriate for clamping or biasing in signal chains up to ~100 MHz. However, for RF applications above this frequency, dedicated low-capacitance TVS or Schottky devices are preferred.

How does the temperature coefficient affect long-term voltage stability?

With a +11.2 mV/°C coefficient, the zener voltage increases by ~112 mV over a 10 °C rise. In precision references, this drift must be compensated via circuit design (e.g., complementary tempcos) or operating within narrow ambient ranges (−40 to +85 °C full spec range).

Can BZT52C16S-7-F replace older BZT52C16 variants without layout changes?

Yes - the "-7-F" suffix denotes tape-and-reel packaging and lead-free plating, but electrical specs, SOD323 footprint, and pinout are identical to non-suffixed BZT52C16S. No PCB redesign is needed; only reflow profile adjustments may be required for lead-free solder compatibility.