Diodes Incorporated BZX84C36TS-7-F

Overview

BZX84C36TS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array with three isolated 36 V ±5.6% (34–38 V) Zener elements in a single SOT-363 package, rated for 200 mW total power dissipation and 90 Ω maximum Zener impedance at 2 mA, used for precision voltage regulation and overvoltage protection in compact DC power rails.

For engineers reviewing the BZX84C36TS-7-F datasheet, BZX84C36TS-7-F pinout, BZX84C36TS-7-F application, or BZX84C36TS-7-F equivalent, key selection criteria include nominal Zener voltage (36 V), tight tolerance (±5.6%), low leakage (<0.1 µA @ 25.2 V), temperature coefficient (+30.4 mV/°C), and triple-diode integration in ultra-small SOT-363.

Technical Context

This device integrates three electrically isolated Zener diodes sharing only mechanical packaging-no internal connection-enabling independent regulation or clamping paths. Each element operates with a specified test current of 2 mA and exhibits a typical temperature coefficient of +30.4 mV/°C, indicating positive drift with rising junction temperature.

The SOT-363 package supports high-density PCB layouts with 0.006 g mass and UL 94V-0 flammability rating. Thermal resistance is 625 °C/W (junction-to-ambient, FR4 board), limiting continuous operation to ≤125 °C ambient at full 200 mW dissipation per diode under derated conditions.

Key Specifications

Pinout & Package

SOT-363 is a 6-pin, dual-row surface-mount plastic package with gull-wing leads. Pin numbering follows standard top-view orientation: pins 1–3 on left row (A1, A2, A3), pins 4–6 on right row (C1, C2, C3), where each A/C pair forms one isolated Zener diode (anode/cathode).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5267BS-7-F and BZX84C36LT1G, BZX84C36TS-7-F uniquely delivers three independent 36 V Zener functions in one SOT-363, reducing component count by 67% and eliminating inter-diode thermal coupling in high-density power management layouts.

Availability

BZX84C36TS-7-F is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive body control modules, PLC input isolation, and medical power monitoring requiring stable component supply and long-term lifecycle continuity.

Supply support for BZX84C36TS-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 centers across Asia and manufacturing in China, Taiwan, and the U.S.

The BZX84 series belongs to Diodes' precision Zener diode portfolio, engineered specifically for compact, high-reliability voltage regulation and transient suppression in space-constrained industrial and automotive electronics.

FAQ

What is the maximum reverse current specification for BZX84C36TS-7-F at 25.2 V?

The datasheet specifies a maximum reverse current (I_R) of 0.1 µA at V_R = 25.2 V (70% of nominal 36 V). This ultra-low leakage ensures minimal loading on high-impedance sensor outputs and preserves accuracy in battery-monitoring circuits where standby current must remain below 100 nA.

Can BZX84C36TS-7-F be used in place of a single 36 V Zener diode?

Yes - any one of its three isolated Zener elements (e.g., A1/C1) functions identically to a discrete 36 V Zener. However, using only one element wastes two others; it is recommended only when future expansion to multi-rail protection is anticipated or when board area constraints justify the SOT-363 footprint despite single-use.

What is the thermal resistance (R_θJA) and how does it affect power handling?

R_θJA is 625 °C/W on FR4 with recommended pad layout. At 200 mW total dissipation, this yields a 125 °C junction rise above ambient - meaning operation above 25 °C ambient requires derating. For example, at 75 °C ambient, max safe power drops to 80 mW (125 °C − 75 °C) ÷ 625 °C/W = 80 mW.

Is the temperature coefficient of BZX84C36TS-7-F positive or negative, and what does it imply for circuit design?

The temperature coefficient is +30.4 mV/°C, indicating a positive drift: Zener voltage increases linearly with junction temperature. In precision references, this requires either temperature-compensated biasing or firmware-based correction - especially critical in medical equipment operating across 0–50 °C ambient ranges.