Nexperia USA Inc. TDZ6V8J,115

Overview

TDZ6V8J,115 from Nexperia is a single Zener diode in SOD323F (SC-90) package, designed for precision voltage regulation and transient suppression in low-power analog and automotive circuits. It delivers a nominal Zener voltage of 6.66–6.94 V at 5 mA, with differential resistance ≤80 Ω, total power dissipation up to 500 mW, and AEC-Q101 qualification for under-hood applications.

For engineers reviewing the TDZ6V8J,115 datasheet, TDZ6V8J,115 pinout, TDZ6V8J,115 application, or TDZ6V8J,115 equivalent, key selection criteria include Zener voltage tolerance, low rdif for stable regulation, thermal resistance (Rth(j-a) = 250 K/W), and automotive-grade reliability in space-constrained SMD layouts.

Technical Context

This Zener diode operates in reverse-bias breakdown mode to clamp or regulate voltage across sensitive nodes. Its 6.8 V nominal working voltage targets mid-range supply rail stabilization-e.g., 5 V LDO feedback paths or microcontroller I/O protection-where temperature coefficient (+1.2 to +4.5 mV/K) and low capacitance (215 pF at 5 mA) minimize signal distortion.

Thermal design relies on FR4 PCB mounting with 16 mm² cathode pad, enabling Rth(j-sp) = 25 K/W to solder point. Non-repetitive peak reverse power dissipation is rated at 100 W (tp ≤ 100 μs), supporting ESD and surge suppression in automotive CAN/LIN interface rails.

Key Specifications

Pinout & Package

SOD323F (SC-90) is a 2-pin surface-mount plastic package with cathode marked by a bar on the top surface. The device mounts on FR4 PCB with tin-plated copper pads (cathode pad area = 16 mm²) for optimal thermal conduction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B6V8,115 and MMSZ4689T1G, TDZ6V8J,115 uniquely combines AEC-Q101 qualification, 80 Ω r_dif, and SOD323F size-making it the only option for space-constrained, thermally demanding automotive voltage references.

Availability

TDZ6V8J,115 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, USB-C power delivery monitors, and smart home MCU reset circuits requiring stable component supply across production lifecycles.

Supply support for TDZ6V8J,115 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

The TDZxJ series targets general-purpose Zener regulation in space-constrained, thermally demanding environments-designed specifically for automotive, industrial, and portable electronics needing AEC-Q101 compliance and ultra-small SMD packaging.

FAQ

What is the maximum continuous reverse current the TDZ6V8J,115 can sustain at 25 °C ambient?

The TDZ6V8J,115 has a maximum total power dissipation of 500 mW at T_amb ≤ 25 °C. At its nominal Zener voltage of 6.8 V, this corresponds to a continuous reverse current limit of approximately 73.5 mA (500 mW ÷ 6.8 V). Derating is required above 25 °C per the Rth(j-a) = 250 K/W thermal resistance.

How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

With a specified temperature coefficient of +1.2 to +4.5 mV/K, the TDZ6V8J,115's Zener voltage shifts by +102 to +383 mV across a 85 K range (−40 °C to +125 °C). This results in a regulation error of +1.5% to +5.6% relative to 6.8 V, requiring compensation in precision references but acceptable for general-purpose clamping.

Can TDZ6V8J,115 replace a 1N4734A in an existing design?

No-TDZ6V8J,115 is not a drop-in replacement for 1N4734A. While both are 6.8 V Zeners, the 1N4734A uses DO-41 through-hole packaging (1000 mW P_tot), whereas TDZ6V8J,115 is SOD323F SMD (500 mW) with different thermal behavior and surge ratings. Layout, thermal pad, and PCB assembly must be redesigned.

What is the significance of the "115" suffix in TDZ6V8J,115?

The "115" suffix denotes the packing method: 3000 units per 8 mm tape-and-reel carrier with 4 mm pitch, compliant with EIA-481-D standards. It indicates factory-packaged reels intended for automated SMT placement-not a variant of the die or electrical specification.