Diodes Incorporated BZT52C27-13-F

Overview

BZT52C27-13-F from Diodes Incorporated is a surface-mount 27 V Zener diode in SOD123 package, rated for 500 mW peak power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±5% tolerance (25.1–28.9 V), 80 Ω maximum Zener impedance at 2 mA test current, and 0.1 µA maximum reverse leakage at 21.4 V. It serves as a precision voltage reference or overvoltage clamp in low-power DC regulation circuits.

For engineers reviewing the BZT52C27-13-F datasheet, BZT52C27-13-F pinout, BZT52C27-13-F application, or BZT52C27-13-F equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJA = 338 °C/W), junction-to-lead thermal resistance (RθJL = 150 °C/W), reverse leakage at VR, and AEC-Q101 qualification status for automotive-grade reliability.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under controlled current conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance, while the SOD123 package supports automated assembly and provides defined thermal performance on FR-4 PCBs with 1-inch copper pad layout.

The device exhibits a negative temperature coefficient of −3.5 mV/°C below 6 V and transitions toward zero near 27 V, enabling predictable drift compensation in voltage references. It is qualified to AEC-Q101 standards, confirming suitability for automotive electronics where thermal cycling, humidity, and long-term stability are critical.

Key Specifications

Pinout & Package

Package: SOD123 - surface-mount plastic case with cathode band marking, 0.010 g mass, UL 94V-0 flammability rating, and matte tin-plated alloy 42 leadframe for RoHS-compliant solderability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5256BS-7-F and BZX84-C27-7-F, BZT52C27-13-F offers the best balance of automotive qualification, thermal performance (RθJA = 338 °C/W), and industry-standard SOD123 manufacturability-making it optimal for cost-sensitive, high-reliability automotive and industrial applications.

Availability

BZT52C27-13-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, medical power monitoring, and consumer power adapter feedback circuits requiring stable component supply and AEC-Q101 assurance.

Supply support for BZT52C27-13-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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with manufacturing and design centers across Asia, Europe, and the US.

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 across automotive, industrial, and consumer markets.

FAQ

What is the maximum reverse voltage (VR) at which BZT52C27-13-F guarantees ≤0.1 µA leakage?

The datasheet specifies 0.1 µA maximum reverse current at VR = 21.4 V. This value is derived from the 79% rule (0.79 × 27 V) commonly applied to Zener diodes to define the voltage below which leakage remains negligible. It is measured under standard conditions (TA = +25°C, pulse test) and validated across production lots.

Does BZT52C27-13-F support reflow soldering per J-STD-020?

Yes. The device uses matte tin finish over alloy 42 leadframe and is rated for solderability per MIL-STD-202, Method 208. Its SOD123 package is compatible with standard lead-free reflow profiles (peak 260°C), and moisture sensitivity level is rated Class 1 per J-STD-020, eliminating bake requirements prior to assembly.

How does the temperature coefficient behave near 27 V, and why does it matter for reference design?

At 27 V, the temperature coefficient is approximately 0 mV/°C - transitioning from negative (−3.5 mV/°C at lower voltages) toward zero. This near-zero TC minimizes voltage drift over temperature, making BZT52C27-13-F especially valuable in stable reference designs where calibration stability across −40 to +125°C is required without active compensation.

Is the 10,000-piece tape-and-reel packaging (indicated by "-13-F") compatible with standard SMD placement equipment?

Yes. The "-13-F" suffix denotes 10,000-unit tape-and-reel packaging in EIA-481-compliant carrier tape, with SOD123 pocket dimensions matching industry-standard 8 mm wide tape. Pocket pitch is 4 mm, and orientation follows cathode-band-forward convention, ensuring full compatibility with Fuji, Yamaha, and Universal Instruments pick-and-place platforms.