Nexperia USA Inc. BZV85-C7V5,133

Overview

BZV85-C7V5,133 from Nexperia is a medium-power axial-leaded Zener diode in a hermetically sealed SOD66 (DO-41) glass package, rated for 7.5 V nominal working voltage with ±5 % tolerance, 1.3 W total power dissipation at T_tp = 55 °C, and 60 W non-repetitive peak reverse power. 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-C7V5,133 datasheet, BZV85-C7V5,133 pinout, BZV85-C7V5,133 application, or BZV85-C7V5,133 equivalent, key selection criteria include its 7.0–7.9 V Zener voltage range, 3 Ω typical differential resistance at 1 mA test current, +2.5 to +5.5 mV/K temperature coefficient, 1500 µA max reverse leakage at 5 V, and suitability for PCB-mounted stabilization where thermal management via copper area is critical.

Technical Context

This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified test current range (1 mA). Its junction-to-tie-point thermal resistance is 110 K/W (lead length 4 mm), enabling stable operation under pulsed surge conditions up to 100 µs.

The device exhibits a positive temperature coefficient (+2.5 to +5.5 mV/K) at its nominal 7.5 V rating, indicating increasing Zener voltage with rising junction temperature - a characteristic critical for thermal drift compensation in reference designs.

Key Specifications

Pinout & Package

Hermetically sealed SOD66 (DO-41) axial glass package with 2 leads: cathode marked by a band, anode unmarked. Body diameter 2.6 mm, overall length 25.4 mm, lead diameter 0.81 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4733A and BZX85C7V5, BZV85-C7V5,133 offers superior regulation stiffness (3 Ω vs. 10 Ω), tighter thermal predictability (+2.5–+5.5 mV/K vs. +6.5 mV/K), and hermetic reliability - making it optimal for industrial feedback and protection circuits demanding long-term parametric stability.

Availability

BZV85-C7V5,133 is available at Aetrix Electronics and suitable for power supply feedback regulation, overvoltage clamp protection, reference voltage sourcing, and current-limited bias network applications requiring stable component supply across production lifecycles.

Supply support for BZV85-C7V5,133 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 delivering high-performance, reliable, and efficient devices for automotive, industrial, and consumer markets, with leadership in logic, discretes, and MOSFETs.

BZV85-C7V5,133 belongs to the BZV85 series of medium-power Zener diodes designed specifically for stable voltage regulation in space-constrained, thermally demanding PCB environments where hermetic integrity and repeatable parametric performance are essential.

FAQ

What is the maximum continuous Zener current for BZV85-C7V5,133 at 25 °C ambient?

The device supports up to 173 mA continuous Zener current at 25 °C ambient with 10 mm lead length, calculated from P_tot = 1.3 W and V_Z ≈ 7.5 V. Derating applies above 55 °C tie-point temperature per the 110 K/W junction-to-tie-point thermal resistance.

How does the marking band identify polarity on BZV85-C7V5,133?

The single black band on the glass body marks Pin 1 as the cathode. When installed, the banded end connects to the higher-potential node (e.g., output rail), and the unmarked lead connects to ground or reference - consistent with standard Zener reverse-bias orientation.

Can BZV85-C7V5,133 replace BZX55C7V5 in existing designs?

Yes, with verification of thermal layout: both are 7.5 V ±5 % Zeners in DO-41 packages, but BZV85-C7V5,133 has 1.3 W P_tot (vs. 0.5 W) and 3 Ω r_dif (vs. 15 Ω), enabling higher current and tighter regulation. PCB copper area must meet ≥1 cm² per lead to sustain full power rating.

What is the non-repetitive peak reverse current rating at 100 µs pulse width?

At t_p = 100 µs, the device sustains up to 8 A peak reverse current (calculated from P_ZSM = 60 W and V_Z ≈ 7.5 V), confirmed in Table 8 of the datasheet for the 7V5 variant. This enables robust ESD and surge suppression without parameter shift.