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Nexperia USA Inc. BZX79-B8V2,113
- Part No.:
- BZX79-B8V2,113
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-B8V2,113.pdf
- Description:
- DIODE ZENER 8.2V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:9,994
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Product details
Overview
BZX79-B8V2,113 from Nexperia is a ±2% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 8.2 V nominal Zener voltage at 5 mA test current, 40 Ω typical differential resistance, and 700 nA maximum reverse leakage at 5 V. It delivers stable low-power voltage reference functionality in compact analog power rails and sensor bias networks.
For engineers reviewing the BZX79-B8V2,113 datasheet, BZX79-B8V2,113 pinout, BZX79-B8V2,113 application, or BZX79-B8V2,113 equivalent, this page provides verified electrical parameters, thermal limits, junction-to-ambient thermal resistance, temperature coefficient behavior, and real-world use context for precision analog design and legacy circuit replacement.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 8.2 V regulation voltage at IZ = 5 mA, exhibiting a positive temperature coefficient of +3.2 to +6.2 mV/K across its operating current range. Its differential resistance of ≤80 Ω ensures tight voltage stability under load variation.
The device is optimized for low-power stabilization in ambient temperatures up to +200 °C junction, with non-repetitive peak reverse power dissipation of 40 W for 100 μs pulses and total continuous power dissipation of 500 mW at Tamb = 50 °C on standard PCB mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.04 V to 8.36 V at IZ = 5 mA - defines precise regulation window for reference circuits |
| Differential Resistance (rdiff) | 40 Ω max. at IZ = 5 mA - determines output impedance and load regulation error |
| Reverse Leakage (IR) | 700 nA max. at VR = 5 V - ensures minimal quiescent current in high-impedance bias networks |
| Power Dissipation (Ptot) | 500 mW at Tamb = 50 °C - sets maximum continuous DC power handling on standard PCB |
| Junction-to-Ambient Rth | 380 K/W - defines thermal rise per watt under standard lead-mount conditions |
| Temperature Coefficient (SZ) | +3.2 to +6.2 mV/K - quantifies voltage drift with temperature in linear regulation region |
| Package | SOD27 (DO-35) - axial-leaded hermetic glass package with cathode band marking |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode indicated by a colored band. Leads are tinned copper-clad steel; body diameter 1.85 mm, length 4.25 mm, lead spacing 25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in Zener configuration | Connected to ground or lower potential node when used as shunt regulator |
| Cathode | Reverse breakdown terminal / regulated output node | Connected to input supply via series resistor; delivers stable 8.2 V reference |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tighter regulation than ±5% variants, reducing need for post-calibration in precision references |
| Hermetic glass SOD27 package | Provides long-term reliability and moisture resistance without conformal coating in industrial environments |
| Non-repetitive 40 W surge rating | Withstands transient overvoltage events such as ESD or inductive kickback without degradation |
| Low 700 nA leakage at 5 V | Minimizes error in high-impedance voltage divider or op-amp feedback networks |
| Positive temperature coefficient | Compensates for negative TC of other components (e.g., transistors) in mixed-TC bias circuits |
Applications
| Industrial Sensor Biasing | Legacy Power Supply Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed 8.2 V node for ratiometric measurement circuits. Use Value: Maintains <±0.5% reference stability over −40 °C to +85 °C ambient due to predictable TC and low leakage. | Use Scenario: Replacing obsolete Zener diodes in maintenance of 1990s-era telecom line card power supervisors. IC Role / Device Role / Timing Role: Low-cost, drop-in voltage clamp for +5 V rail monitoring and brown-out detection. Use Value: Matches original DO-35 footprint and electrical specs, enabling no-change board repair with certified traceability. |
| Audio Amplifier DC Offset Nulling | Microcontroller Reset Circuit |
Use Scenario: Generating matched reference voltages for op-amp offset trimming in Class AB audio preamplifiers. IC Role / Device Role / Timing Role: Paired Zener reference source for dual-rail nulling networks requiring matched TC and tolerance. Use Value: ±2% tolerance and consistent +4.6 mV/K TC enable symmetrical drift cancellation between channels. | Use Scenario: Setting threshold voltage for RC-based manual reset generation in 8-bit MCU systems. IC Role / Device Role / Timing Role: Precision voltage threshold element defining reset assertion level during power-up sequencing. Use Value: 8.2 V Zener voltage allows clean separation from 5 V logic rails while maintaining margin against supply ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A | 5% tolerance, 5.1 V nominal, DO-41 package, 1 W Ptot | Higher power, looser tolerance, different footprint - unsuitable for space-constrained or precision designs | Select only if higher power and lower accuracy are acceptable and board layout permits DO-41 lead spacing |
| BZX84-C8V2 | SOT-23 surface-mount, ±5% tolerance, 300 mW Ptot, 100 nA IR at 5 V | Smaller footprint but lower power rating and wider voltage spread - better for modern SMT but less stable in analog references | Prefer for new SMT designs where board area is critical; avoid in legacy through-hole or high-stability analog circuits |
Compared with 1N4733A and BZX84-C8V2, BZX79-B8V2,113 offers superior voltage accuracy (±2% vs. ±5%), proven long-term stability in hermetic glass packaging, and compatibility with legacy through-hole manufacturing - making it the optimal choice for repair, calibration-grade references, and industrial analog signal chains.
Availability
BZX79-B8V2,113 is available at Aetrix Electronics and suitable for industrial sensor biasing, legacy power supply reference, audio amplifier DC offset nulling, and microcontroller reset circuit applications requiring stable component supply across extended product lifecycles.
Supply support for BZX79-B8V2,113 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, serving automotive, industrial, computing, consumer, and wearable markets with high-volume, high-reliability components.
The BZX79 series belongs to Nexperia's legacy Zener diode portfolio, designed specifically for low-power voltage regulation and precision reference applications in cost-sensitive, high-reliability analog circuits.
FAQ
What is the maximum continuous power dissipation for BZX79-B8V2,113?
The maximum continuous power dissipation is 500 mW at an ambient temperature of 50 °C with standard PCB mounting (lead length ≤8 mm, no metallization pad). At higher ambient temperatures, derating applies per the thermal resistance of 380 K/W - for example, at 70 °C ambient, maximum usable power drops to approximately 395 mW.
Does BZX79-B8V2,113 have a cathode marking, and how is it identified?
Yes, the cathode is marked by a distinct colored band on the glass body of the SOD27 (DO-35) package. This band aligns with the cathode terminal, which must be connected to the higher-potential side of the circuit when used in reverse-bias Zener regulation mode. The anode is the unmarked lead.
Can BZX79-B8V2,113 be used in place of older Philips/NXP-branded BZX79-B8V2 parts?
Yes - BZX79-B8V2,113 is the direct Nexperia successor to the original NXP/Philips BZX79-B8V2, retaining identical electrical specifications, mechanical dimensions, and SOD27 packaging. Nexperia assumed ownership of this product line in February 2017 and maintains full backward compatibility for repair and continuity programs.
What is the typical temperature coefficient behavior of BZX79-B8V2,113?
The temperature coefficient ranges from +3.2 mV/K to +6.2 mV/K depending on Zener test current, with a typical value of +4.6 mV/K at IZ = 5 mA. This positive coefficient enables predictable, linear voltage drift with temperature - useful for compensating negative TC elements in analog bias networks.
BZX79-B8V2,113 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):
- 8.2 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 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-B8V2,113 FAQ
1.How can I place an order for BZX79-B8V2,113 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-B8V2,113 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-B8V2,113 reliable?
The price and inventory of BZX79-B8V2,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-B8V2,113 is usually 5 days.
3.What payment methods are accepted for BZX79-B8V2,113?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-B8V2,113 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-B8V2,113?
BZX79-B8V2,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-B8V2,113 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-B8V2,113?
For technical support, including BZX79-B8V2,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-B8V2,113 requirements.
6.How does Aetrix verify that BZX79-B8V2,113 is sourced from the original manufacturer or authorized distributors?
All BZX79-B8V2,113 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-B8V2,113 meets industry standards.
7.What is the process for return or replacement of BZX79-B8V2,113?
All BZX79-B8V2,113 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-B8V2,113, 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-B8V2,113 part is unused and in its original packaging.
Return procedure for BZX79-B8V2,113:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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