My Inquiry
My Account
Nexperia USA Inc. BZX79-B3V9,113
- Part No.:
- BZX79-B3V9,113
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-B3V9,113.pdf
- Description:
- DIODE ZENER 3.9V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:4,215
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX79-B3V9,113 from Nexperia is a ±2% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 3.9 V nominal Zener voltage at 5 mA test current, 400–500 mW total power dissipation, and 3 μA maximum reverse leakage at 1 V. It serves as a low-power voltage reference or stabilization element in linear power supplies, sensor biasing circuits, and overvoltage protection clamps.
For engineers reviewing the BZX79-B3V9,113 datasheet, BZX79-B3V9,113 pinout, BZX79-B3V9,113 application, or BZX79-B3V9,113 equivalent, this page delivers verified electrical parameters, thermal behavior, differential resistance (400–600 Ω), temperature coefficient (−3.5 to −2.5 mV/K), and real-world design implications for precision analog referencing and low-current regulation.
Technical Context
This device operates as a two-terminal, silicon planar Zener diode with avalanche-dominated breakdown above 5.6 V and Zener-dominated breakdown below - the BZX79-B3V9 exhibits Zener-type conduction with a negative temperature coefficient of −2.5 mV/K at 5 mA. Its 400–600 Ω differential resistance directly impacts output impedance in shunt-regulator configurations.
The SOD27 package enables axial mounting on PCBs without metallization pads, with thermal resistance from junction to ambient at 380 K/W (lead length ≤8 mm). Non-repetitive peak reverse power dissipation reaches 40 W for 100 μs pulses, supporting transient suppression in low-energy surge scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.82–3.98 V at IZ = 5 mA - defines stable reference point for ±2% tolerance designs |
| Differential Resistance (rdif) | 400–600 Ω at IZ = 5 mA - determines load regulation error under varying current |
| Reverse Leakage (IR) | 3 μA max at VR = 1 V - limits quiescent current in high-impedance bias networks |
| Power Dissipation (Ptot) | 500 mW at Tamb = 50 °C - sets maximum continuous DC power handling in standard PCB layout |
| Temperature Coefficient (SZ) | −2.5 mV/K at IZ = 5 mA - quantifies drift per degree Celsius in precision reference applications |
| Capacitance (Cd) | 450 pF max at f = 1 MHz, VR = 0 V - affects high-frequency noise coupling and AC bypass performance |
| Non-repetitive Peak Power | 40 W for tp = 100 μs - supports short-duration transient clamping without failure |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode band marking; leads are untrimmed, intended for through-hole mounting. Thermal design assumes lead length ≤8 mm and no copper pour under device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in shunt regulator | Connected to ground or lower potential node; carries forward current up to 250 mA |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input supply via series resistor; maintains 3.9 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tighter regulation than ±5% variants (e.g., BZX79-C3V9), reducing need for post-calibration in reference circuits |
| Hermetic glass SOD27 package | Ensures long-term stability and moisture resistance in industrial environments where plastic packages may degrade |
| Low 3 μA reverse leakage at 1 V | Minimizes standby current in battery-powered sensor references and low-power microcontroller reset circuits |
| Negative temperature coefficient (−2.5 mV/K) | Allows predictable, compensatable drift in temperature-sensitive analog front-ends when combined with positive-TC components |
Applications
| Industrial Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 3.9 V bias to bridge-based pressure sensors in factory automation transmitters. IC Role / Device Role / Timing Role: Zener diode acting as passive voltage reference for op-amp excitation circuitry. Use Value: ±2% tolerance ensures sensor output accuracy remains within 0.5% full-scale error across operating temperature range. | Use Scenario: Generating a clean, low-current reset threshold for 3.3 V microcontrollers in smart metering modules. IC Role / Device Role / Timing Role: Shunt regulator establishing precise trip voltage for external reset supervisor ICs. Use Value: 3 μA leakage prevents premature discharge of RC timing network, extending valid reset pulse duration. |
| Linear Power Supply Reference | Overvoltage Clamp for GPIO Protection |
Use Scenario: Stabilizing feedback node in discrete 5 V linear regulator using PNP pass transistor. IC Role / Device Role / Timing Role: Voltage reference element setting output regulation point via resistive divider. Use Value: 400–600 Ω differential resistance contributes <10 mV load regulation error across 1–10 mA output variation. | Use Scenario: Protecting 3.3 V I/O pins against ESD and accidental 5 V misconnection in IoT edge nodes. IC Role / Device Role / Timing Role: Low-energy clamp limiting pin voltage to 3.9 V + forward drop during fault events. Use Value: 40 W non-repetitive peak power rating absorbs single 2 kV HBM ESD pulses without degradation. |
Availability
BZX79-B3V9,113 is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller reset circuits, linear power supply references, and GPIO overvoltage clamping requiring stable component supply and long-lifecycle support.
Supply support for BZX79-B3V9,113 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, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.
The BZX79 series belongs to Nexperia's voltage regulator diode product line, engineered for precision low-power voltage referencing and stabilization in cost-sensitive, high-reliability analog circuits.
FAQ
What is the maximum continuous forward current for BZX79-B3V9,113?
The absolute maximum continuous forward current is 250 mA at Tamb = 50 °C. This rating assumes standard PCB mounting with untrimmed leads and no copper pour. Exceeding this value risks thermal runaway due to the device's 380 K/W junction-to-ambient thermal resistance.
How does the temperature coefficient affect regulation accuracy over temperature?
With a typical temperature coefficient of −2.5 mV/K at 5 mA, the Zener voltage decreases by approximately 2.5 mV per Kelvin rise. Over a 100 °C range (−40 to +60 °C), this yields ~250 mV drift - requiring compensation in high-accuracy references or limiting use to narrow ambient bands.
Can BZX79-B3V9,113 replace BZX79-C3V9 in existing designs?
Yes, but only if ±5% tolerance is acceptable. The BZX79-C3V9 has a wider 3.7–4.1 V range versus BZX79-B3V9's tighter 3.82–3.98 V. Differential resistance is similar, but leakage may differ slightly; verify stability under worst-case bias conditions before substitution.
Is the SOD27 package RoHS compliant and lead-free?
Yes, Nexperia's SOD27-packaged BZX79-B3V9,113 is RoHS compliant and lead-free, meeting JEDEC J-STD-609 Category 1 requirements. The glass body and matte tin-plated leads ensure compatibility with standard reflow and wave soldering processes.
BZX79-B3V9,113 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 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-B3V9,113 FAQ
1.How can I place an order for BZX79-B3V9,113 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-B3V9,113 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-B3V9,113 reliable?
The price and inventory of BZX79-B3V9,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-B3V9,113 is usually 5 days.
3.What payment methods are accepted for BZX79-B3V9,113?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-B3V9,113 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-B3V9,113?
BZX79-B3V9,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-B3V9,113 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-B3V9,113?
For technical support, including BZX79-B3V9,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-B3V9,113 requirements.
6.How does Aetrix verify that BZX79-B3V9,113 is sourced from the original manufacturer or authorized distributors?
All BZX79-B3V9,113 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-B3V9,113 meets industry standards.
7.What is the process for return or replacement of BZX79-B3V9,113?
All BZX79-B3V9,113 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-B3V9,113, 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-B3V9,113 part is unused and in its original packaging.
Return procedure for BZX79-B3V9,113:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX79-B3V9,113 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
