Nexperia USA Inc. BAT85,133

Overview

BAT85,133 from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, housed in a hermetically sealed DO-34 (SOD68) axial package. It delivers 400 mV forward voltage at 10 mA, 30 V reverse voltage rating, and ultrafast 4 ns reverse recovery time-ideal for high-speed clamping and protection circuits in low-voltage DC-DC converters.

For engineers reviewing the BAT85,133 datasheet, BAT85,133 pinout, BAT85,133 application, or BAT85,133 equivalent, key selection criteria include its low VF/low trr trade-off, glass-sealed reliability under thermal cycling, compatibility with 5.08 mm pitch PCB mounting, and suitability for ESD-sensitive signal line protection where silicon diodes fail to meet speed requirements.

Technical Context

The BAT85,133 employs a planar Schottky junction architecture with an integrated guard ring to suppress edge breakdown and improve ruggedness under transient overvoltage. Its metal–semiconductor interface enables majority-carrier conduction, eliminating minority-carrier storage delay.

This enables true zero-recovery behavior in switching applications: reverse recovery time is measured at just 4 ns under IF = 10 mA / IR = 10 mA / RL = 100 Ω conditions, with no tail current-critical for >10 MHz flyback snubbers and RF detector bias networks.

Key Specifications

Pinout & Package

Package: DO-34 (SOD68), hermetically sealed glass axial package with 2 leads; lead spacing 5.08 mm; max body length 3.04 mm; max lead diameter 0.55 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR0530T1G and SD103A-T, BAT85,133 uniquely balances hermetic reliability, 30 V VR headroom, and 4 ns trr in an axial through-hole format-making it the preferred choice for legacy industrial controls, telecom line cards, and repair/rework scenarios requiring proven long-lifecycle availability.

Availability

BAT85,133 is available at Aetrix Electronics and suitable for ultra-high-speed switching, voltage clamping, protection circuits, and blocking diode applications requiring stable component supply across extended production lifecycles.

Supply support for BAT85,133 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 discrete and logic devices, with roots in NXP's standard products division and independent operation since 2017.

BAT85,133 belongs to Nexperia's Schottky diode portfolio engineered for signal integrity and robustness in industrial automation, telecom infrastructure, and consumer power management-where speed, consistency, and long-term parametric stability are non-negotiable.

FAQ

Is BAT85,133 suitable for automotive applications?

No. BAT85,133 is not AEC-Q200 qualified and lacks automotive-grade screening, temperature cycling validation, or PPAP documentation. Nexperia explicitly states in its datasheet that non-automotive qualified products are unsuitable for automotive use-including body electronics, infotainment, or ADAS subsystems-even if electrical parameters appear sufficient.

What is the maximum allowable PCB pad temperature during soldering?

The DO-34 glass package permits wave or hand-soldering at peak temperatures up to 260 °C for ≤10 seconds, per Nexperia's recommended process guidelines. Exceeding this risks internal seal fracture or lead-to-glass bond degradation, leading to increased IR drift or catastrophic failure after thermal cycling.

Can BAT85,133 replace BAT54 in surface-mount designs?

No-BAT85,133 uses a DO-34 axial package incompatible with SOT-23 footprints. While both are Schottky diodes, BAT54 has different VF (320 mV @ 10 mA), trr (5 ns), and thermal resistance (Rth(j-a) ≈ 400 K/W). Direct substitution requires mechanical redesign and revalidation of thermal and timing performance.

Does BAT85,133 exhibit significant VF variation over temperature?

Yes-VF decreases by approximately −1.8 mV/°C from 25 °C to 125 °C, as confirmed by Figure 1 in the datasheet. At 10 mA, VF drops from 400 mV at 25 °C to ~382 mV at 85 °C and ~365 mV at 125 °C, which must be accounted for in precision clamp threshold calculations.