Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZX79-B2V7,133

Name: BZX79-B2V7,133
Brand: Nexperia USA Inc.
SKU: BZX79-B2V7,133
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BZX79-B2V7,133

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: BZX79-B2V7,133.pdf

Description:: DIODE ZENER 2.7V 400MW ALF2

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,502

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BZX79-B2V7,133 from Nexperia is a ±2% tolerance Zener voltage regulator diode in DO-35 (SOD27) glass package, rated for 2.65 V to 2.75 V nominal Zener voltage at 5 mA test current, with 300 Ω typical differential resistance and −3.5 mV/K to −2.0 mV/K temperature coefficient - used as a low-power voltage reference in analog sensor biasing circuits.

For engineers reviewing the BZX79-B2V7,133 datasheet, BZX79-B2V7,133 pinout, BZX79-B2V7,133 application, or BZX79-B2V7,133 equivalent, this page delivers verified electrical parameters, thermal limits, reverse leakage behavior at VR = 1 V (20 μA max), and package-specific mounting guidance for precision low-voltage stabilization.

Technical Context

This device operates as a two-terminal shunt voltage regulator, maintaining stable output by conducting reverse current above its specified Zener breakdown threshold. Its low 2.7 V nominal voltage enables use in 3.3 V rail monitoring and battery-level sensing where headroom is constrained.

Designed for operation at Tj = 25 °C unless otherwise specified, it exhibits a negative temperature coefficient (−3.5 to −2.0 mV/K), requiring thermal compensation in high-stability references. The 450 pF diode capacitance at 0 V and 1 MHz impacts high-frequency noise rejection in feedback paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.65 V to 2.75 V at I_Z = 5 mA - defines precise regulation point for low-voltage analog references
Differential Resistance (r_dif)	300 Ω typ., 600 Ω max. at I_Z = 5 mA - determines load regulation error under current variation
Reverse Leakage (I_R)	20 μA max. at V_R = 1 V - sets minimum bias current requirement for stable regulation onset
Power Dissipation (P_tot)	500 mW max. at T_amb = 50 °C - constrains continuous operating current to ≤185 mA at 2.7 V
Temperature Coefficient (S_Z)	−3.5 mV/K to −2.0 mV/K - requires derating or compensation in temperature-varying environments
Diode Capacitance (C_d)	450 pF max. at f = 1 MHz, V_R = 0 V - limits high-frequency stability in active filter or oscillator feedback networks
Non-repetitive Peak Power (P_ZSM)	40 W max. for t_p = 100 μs - supports transient overvoltage clamping in low-energy surge events

Pinout & Package

Hermetically sealed axial-leaded DO-35 (SOD27) glass package with cathode band marking; leads are untrimmed, intended for through-hole PCB mounting with ≤8 mm lead length for thermal compliance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / reference ground node	Connected to system ground or lower-potential rail; establishes reference return path
Cathode	Zener breakdown terminal / regulated output node	Connected to input supply; voltage at this node is clamped to V_Z when reverse-biased

Key Features

Feature	Design Value
±2% Zener voltage tolerance	Enables tighter regulation accuracy than ±5% variants, reducing need for post-calibration in precision references
500 mW total power dissipation	Supports higher continuous bias current than standard 400 mW variants, improving noise immunity in low-current references
Low 2.7 V nominal breakdown	Permits direct regulation from 3.3 V supplies without series resistors exceeding 0.6 V drop, minimizing power loss
DO-35 hermetic glass package	Provides long-term parameter stability and moisture resistance critical for industrial-grade analog signal chains
−3.5 to −2.0 mV/K tempco	Allows predictable drift modeling in temperature-compensated reference designs using complementary components

Applications

Industrial Sensor Biasing

Low-Voltage Microcontroller Reset Circuit

Use Scenario: Providing stable 2.7 V bias to bridge-based pressure sensors in factory automation transmitters.

IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed excitation voltage across Wheatstone bridge elements.

Use Value: Maintains <±0.5% bridge output linearity over −40 °C to +85 °C due to known tempco and low r_dif.

Use Scenario: Generating a clean reset threshold for 3.3 V microcontrollers during brown-out conditions.

IC Role / Device Role / Timing Role: Zener-clamped voltage divider feeding RC delay network to reset supervisor IC.

Use Value: Ensures reset assertion at exactly 2.7 V ±2%, eliminating false resets caused by supply ripple near 3.3 V rail.

Portable Battery Voltage Monitor

USB-C Power Negotiation Reference

Use Scenario: Monitoring Li-ion cell voltage in wearables using ADC with internal 2.5 V reference.

IC Role / Device Role / Timing Role: Precision voltage divider top element referenced to 2.7 V Zener, scaling cell voltage to ADC input range.

Use Value: Achieves ±10 mV absolute measurement accuracy over battery discharge cycle without calibration.

Use Scenario: Providing stable 2.7 V reference for USB-C CC logic comparator in host port controllers.

IC Role / Device Role / Timing Role: Regulated voltage source for comparator hysteresis and threshold setting in USB PD communication circuitry.

Use Value: Guarantees compliant 2.7–3.0 V CC line detection window per USB Type-C specification Rev 2.1.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5221BS-7-F	2.4 V nominal, SOT-23 package, 225 mW P_tot, ±5% tolerance	Suitable only for non-critical biasing; lacks tight tolerance and thermal stability of DO-35 glass	Select when board space is constrained and ±5% accuracy suffices
BZX79-C2V7,113	Same DO-35 package but ±5% tolerance (2.5 V–2.9 V), higher I_R (50 μA at 1 V)	Acceptable for cost-sensitive consumer electronics where calibration is performed post-assembly	Select when production test coverage compensates for wider V_Z spread

Compared with MMBZ5221BS-7-F and BZX79-C2V7,113, the BZX79-B2V7,133 delivers superior voltage accuracy and thermal consistency for analog signal conditioning, while its DO-35 package ensures long-term reliability in thermally cycled industrial environments - making it the preferred choice where reference stability directly impacts measurement integrity.

Availability

BZX79-B2V7,133 is available at Aetrix Electronics and suitable for industrial sensor biasing, low-voltage microcontroller reset circuits, and portable battery voltage monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for BZX79-B2V7,133 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 leader in discrete semiconductors, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, and computing applications.

The BZX79 series belongs to Nexperia's legacy Zener diode portfolio, engineered specifically for precision low-power voltage regulation and reference applications where stability, repeatability, and long-term parametric consistency are essential.

FAQ

What is the maximum continuous reverse current for reliable regulation?

The BZX79-B2V7,133 maintains regulation up to 185 mA at 2.7 V when ambient temperature is held at 50 °C, based on its 500 mW power rating and thermal resistance of 380 K/W. Exceeding this current risks thermal runaway due to negative tempco amplification, especially without heatsinking or airflow.

Can this diode be used in series with another Zener for higher voltage reference?

Yes - stacking two BZX79-B2V7,133 diodes yields ~5.4 V with matched tempco behavior, but differential resistance adds (600 Ω max each), increasing output impedance. For >3 V references, dedicated higher-voltage Zeners like BZX79-B5V1 offer lower r_dif and better stability.

Is the DO-35 package compatible with automated through-hole insertion equipment?

Yes - the DO-35 package has standardized 0.56 mm lead diameter and 25.4 mm lead spacing per IEC/DO-35 spec, supporting wave soldering and standard axial-component placement machines. Lead length must be trimmed to ≤8 mm after insertion to maintain thermal resistance compliance.

How does reverse leakage affect low-power battery applications?

At VR = 1 V, leakage is capped at 20 μA - acceptable for most battery-powered systems drawing >100 μA. However, in nanoampere-sleep-mode devices (e.g., IoT sensors), this leakage dominates quiescent current; consider BZX84-C2V7 (SOT-23, 5 μA max) for sub-μA standby budgets.

BZX79-B2V7,133 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: DO-204AH, DO-35, Axial

Packaging:: Cut Tape (CT)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 2.7 V

Tolerance:: ±2%

Power - Max:: 400 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 20 µA @ 1 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: -65°C ~ 200°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ALF2

BZX79-B2V7,133 FAQ

1.How can I place an order for BZX79-B2V7,133 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX79-B2V7,133 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BZX79-B2V7,133 reliable?

The price and inventory of BZX79-B2V7,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-B2V7,133 is usually 5 days.

3.What payment methods are accepted for BZX79-B2V7,133?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-B2V7,133 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX79-B2V7,133?

BZX79-B2V7,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX79-B2V7,133 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BZX79-B2V7,133?

For technical support, including BZX79-B2V7,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-B2V7,133 requirements.

6.How does Aetrix verify that BZX79-B2V7,133 is sourced from the original manufacturer or authorized distributors?

All BZX79-B2V7,133 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZX79-B2V7,133 meets industry standards.

7.What is the process for return or replacement of BZX79-B2V7,133?

All BZX79-B2V7,133 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-B2V7,133, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BZX79-B2V7,133 part is unused and in its original packaging.

Return procedure for BZX79-B2V7,133:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…