Nexperia USA Inc. BZV85-C68,133

Overview

BZV85-C68,133 from Nexperia is a medium-power Zener voltage regulator diode in a hermetically sealed SOD66 (DO-41) glass package, rated for 68 V nominal working voltage with ±5 % tolerance, 1.3 W total power dissipation at 25 °C ambient, and 60 W non-repetitive peak reverse power handling. It serves as a precision voltage reference or shunt regulator in low-to-medium current stabilization circuits, such as power supply feedback loops and overvoltage protection stages.

For engineers reviewing the BZV85-C68,133 datasheet, BZV85-C68,133 pinout, BZV85-C68,133 application, or BZV85-C68,133 equivalent, key selection criteria include its 64–72 V working voltage range, 200 Ω typical differential resistance at test current, +0.35 mV/K temperature coefficient, 48 mA non-repetitive peak reverse current at 100 µs pulse, and thermal resistance of 110 K/W (junction-to-tie-point, 4 mm lead length).

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable DC voltage across its terminals under varying load or input conditions. Its E24-standardized 68 V rating targets mid-range regulation needs where higher-voltage tolerance and moderate surge resilience are required.

Thermal performance is defined by two distinct dissipation limits: 1.3 W with leads held at 55 °C (4 mm from body), and 1 W on PCB with 1 cm² copper per lead. Junction temperature is rated up to 200 °C, enabling operation in thermally demanding industrial environments.

Key Specifications

Pinout & Package

Hermetically sealed axial-leaded SOD66 (DO-41) glass package with 2.6 mm body diameter and 25.4 mm overall length; cathode identified by a single black band on the glass envelope.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4744A and BZX85C68, BZV85-C68,133 delivers superior thermal derating headroom (1.3 W at elevated tie-point temperature), lower differential resistance for improved regulation accuracy, and hermetic glass packaging for extended lifetime in industrial deployments.

Availability

BZV85-C68,133 is available at Aetrix Electronics and suitable for industrial power supply feedback, overvoltage protection circuits, and test equipment reference sources requiring stable component supply with guaranteed long-term parametric consistency.

Supply support for BZV85-C68,133 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 essential semiconductors, with leadership in logic, discrete, and MOSFET technologies.

The BZV85 series belongs to Nexperia's precision Zener diode product line, engineered specifically for stable voltage reference and shunt regulation in industrial, telecom, and instrumentation applications demanding hermetic reliability and tight tolerance.

FAQ

What is the maximum continuous reverse current this diode can handle at 25 °C ambient?

At 25 °C ambient with 10 mm lead length on standard PCB, the BZV85-C68,133 supports up to 19.1 mA continuous reverse current before reaching its 1.0 W power limit. This value increases to ~36.9 mA if leads are maintained at 55 °C (4 mm from body), leveraging its 1.3 W rating. Actual operating current must stay below the point where junction temperature exceeds 200 °C.

How does the +0.35 mV/K temperature coefficient affect regulation accuracy over –40 °C to +125 °C?

Over that 165 K range, the voltage shift is approximately +57.8 mV (0.35 × 165), resulting in a final V_Z of ~68.06 V at 125 °C versus 68.00 V at 25 °C. This <0.09 % drift is negligible in most stabilization applications and significantly better than Zeners with negative or higher-magnitude coefficients in the same voltage range.

Can this diode be used in parallel for higher power dissipation?

No - Zener diodes exhibit manufacturing spread in V_Z and temperature coefficient, causing current hogging when paralleled. Even matched units require individual ballast resistors, which defeat the purpose of parallel operation. For >1.3 W, use a higher-rated Zener or switch to an active regulator topology.

Is the SOD66 package compatible with standard DO-41 automated insertion equipment?

Yes - SOD66 is the JEDEC-registered designation for DO-41. The mechanical dimensions (2.6 mm body diameter, 25.4 mm length, 0.81 mm lead diameter) match DO-41 specifications exactly, ensuring full compatibility with wave soldering carriers, tape-and-reel feeders, and axial insertion tooling used in high-volume manufacturing.