Diodes Incorporated BZT52C16LPQ-7

Overview

BZT52C16LPQ from Diodes Incorporated is a 16 V, 5 mA Zener diode in X1-DFN1006-2 package, rated for 250 mW power dissipation and 40 Ω dynamic impedance at test current, AEC-Q101 qualified for automotive voltage regulation and overvoltage protection circuits.

For engineers reviewing the BZT52C16LPQ datasheet, BZT52C16LPQ pinout, BZT52C16LPQ application, or BZT52C16LPQ equivalent, key selection criteria include zener voltage tolerance (±3.1%), low thermal resistance (500 °C/W), cathode-marked ultra-small footprint, and PPAP-capable automotive qualification.

Technical Context

This device operates as a precision shunt voltage regulator with nominal 16 V breakdown, specified at 5 mA test current and characterized up to 150 °C junction temperature. Its 11.2 mV/°C temperature coefficient enables predictable drift compensation in bias networks.

The X1-DFN1006-2 package features NiPdAu-plated terminals, J-STD-020 Level 1 moisture sensitivity, and UL 94V-0 molded compound - optimized for reflow-compatible automated assembly in space-constrained PCB layouts.

Key Specifications

Pinout & Package

Package: X1-DFN1006-2 - 1.0 mm × 0.6 mm, 0.5 mm height, cathode marked by bar on top surface, solderable NiPdAu terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-C16 and MMSZ5245B, BZT52C16LPQ delivers the smallest footprint, guaranteed automotive qualification, and tighter voltage tolerance - critical for space-constrained, safety-relevant systems requiring traceable process control.

Availability

BZT52C16LPQ is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and medical diagnostic equipment requiring stable component supply with full AEC-Q101 documentation and PPAP support.

Supply support for BZT52C16LPQ 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, serving automotive, industrial, computing, and consumer markets with high-reliability components.

The BZT52CxxLPQ series belongs to Diodes' AEC-Q101-qualified Zener portfolio, designed specifically for compact, thermally efficient voltage reference and clamping in automotive ECUs and harsh-environment electronics.

FAQ

What is the cathode marking convention for BZT52C16LPQ?

The cathode is marked by a bar on the top surface of the X1-DFN1006-2 package. In bottom view, Terminal 2 (right pad) is the cathode; this matches the polarity shown in the device's mechanical drawing and electrical test configuration per DS40788 Rev. 4-2.

Does BZT52C16LPQ support reflow soldering per JEDEC J-STD-020?

Yes - it is rated Moisture Sensitivity Level 1, meaning it may be stored indefinitely at ≤30°C/85% RH and subjected to standard Pb-free reflow profiles (peak 260°C) without baking. The NiPdAu finish ensures reliable wetting and intermetallic formation.

How does the 11.2 mV/°C temperature coefficient affect regulation accuracy?

Over −40°C to +125°C, the zener voltage shifts ±0.93 V from nominal 16 V - a ±5.8% deviation. This must be accounted for in precision references; however, it enables predictable compensation when paired with complementary TC components in bias networks.

Can BZT52C16LPQ replace through-hole 1N4745A in existing designs?

No - the 1N4745A is a 16 V, 1 W axial lead device in DO-41 package. BZT52C16LPQ offers only 250 mW and requires different thermal design and PCB layout. It is not a drop-in replacement but a space-optimized alternative for new low-power, surface-mount designs.