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Nexperia USA Inc. BZX79-C3V3,113
- Part No.:
- BZX79-C3V3,113
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-C3V3,113.pdf
- Description:
- DIODE ZENER 3.3V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:5,578
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Product details
Overview
BZX79-C3V3,113 from Nexperia is a ±5% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 3.3 V nominal working voltage at 5 mA test current, 500 mW total power dissipation at 50 °C ambient, and 5 μA reverse leakage at 1 V reverse bias. It serves as a low-power voltage reference in linear regulators and signal conditioning circuits for consumer and industrial power management.
For engineers reviewing the BZX79-C3V3,113 datasheet, BZX79-C3V3,113 pinout, BZX79-C3V3,113 application, or BZX79-C3V3,113 equivalent, this page delivers verified electrical parameters, thermal behavior, junction-to-ambient resistance, temperature coefficient, and validated alternative parts - all critical for precision biasing and stabilization design.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its differential resistance of 350–600 Ω at 5 mA and temperature coefficient of −3.5 to −2.4 mV/K define regulation accuracy and thermal drift performance in low-current reference paths.
The device uses axial-leaded SOD27 packaging with hermetic glass sealing, enabling reliable operation up to +200 °C junction temperature and supporting non-repetitive peak reverse power dissipation of 40 W for 100 μs pulses - essential for transient suppression in compact analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.3 V at IZ = 5 mA - defines stable reference point for bias networks and feedback loops |
| Voltage Tolerance | ±5% - allows cost-effective selection where tight regulation is not required |
| Total Power Dissipation | 500 mW at Tamb = 50 °C - sets maximum continuous DC power handling on standard PCB layout |
| Reverse Leakage Current | 5 μA at VR = 1 V - ensures minimal quiescent current draw in high-impedance reference nodes |
| Differential Resistance | 350–600 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient | −3.5 to −2.4 mV/K - quantifies voltage drift per degree Celsius in ambient temperature variations |
| Junction-to-Ambient Rth | 380 K/W - defines thermal rise per watt under natural convection on unmetallized PCB |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode band marking; leads are tinned copper-clad steel, suitable for wave or hand soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to ground or lower potential node in Zener shunt configuration |
| Cathode | Reverse breakdown terminal / high-side connection | Marked by band; connected to input rail to clamp voltage at 3.3 V |
Key Features
| Feature | Design Value |
|---|---|
| Low-power Zener regulation | Enables stable 3.3 V reference in space-constrained analog circuits without active components |
| Hermetic glass encapsulation | Ensures long-term parameter stability and moisture resistance in industrial environments |
| Non-repetitive surge capability | Withstands 40 W reverse pulse for 100 μs - supports basic overvoltage protection in low-energy nodes |
| E24 voltage series coverage | Part of 37-type family spanning 2.4–75 V - simplifies BOM consolidation across multiple designs |
Applications
| Power Supply Reference | Signal Level Shifting |
|---|---|
Use Scenario: Providing stable 3.3 V reference for op-amp biasing and ADC reference inputs in battery-powered sensors. IC Role / Device Role / Timing Role: Passive voltage reference element in shunt configuration, absorbing excess current to hold node voltage constant. Use Value: Delivers <5 μA leakage and <600 Ω dynamic impedance to minimize reference error under load variation. | Use Scenario: Translating 5 V logic signals to 3.3 V compatible levels in mixed-voltage microcontroller interfaces. IC Role / Device Role / Timing Role: Clamping diode limiting high-side voltage swing to safe 3.3 V threshold. Use Value: Leverages sharp 3.3 V Zener knee and low capacitance (<450 pF) to preserve signal edge integrity. |
| Overvoltage Protection | Current Source Biasing |
Use Scenario: Protecting input pins of analog front-end ICs against ESD-induced transients up to 40 W/100 μs. IC Role / Device Role / Timing Role: Transient voltage suppressor operating in avalanche mode during surge events. Use Value: Provides defined clamping voltage with 350–600 Ω differential resistance to limit peak current into protected circuitry. | Use Scenario: Setting precise bias current for LED drivers or transistor amplifiers using constant-current sink topology. IC Role / Device Role / Timing Role: Voltage-controlled current source element via series resistor and fixed Zener drop. Use Value: Enables predictable 3.3 V reference with ±5% tolerance and −2.4 mV/K tempco for stable current setting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS,115 | Surface-mount SOT-323 package; 3.3 V ±5%; 200 mW Ptot; 10 μA IR at 1 V | Lower power rating and higher leakage limit use in high-impedance references or space-constrained layouts | Select when board area is constrained and thermal budget permits reduced dissipation |
| 1N4728A | DO-41 package; 3.3 V ±5%; 1 W Ptot; 50 μA IR at 1 V; higher rdif (~10 Ω) | Higher power handling but looser regulation due to larger differential resistance and leakage | Select when robustness against sustained overload is prioritized over precision |
Compared with MMBZ5226BS,115, BZX79-C3V3,113 offers 2.5× higher power rating and half the reverse leakage, making it preferable for stable DC references; versus 1N4728A, it trades higher surge capability and tighter rdif for lower thermal resistance in leaded through-hole mounting.
Availability
BZX79-C3V3,113 is available at Aetrix Electronics and suitable for low-voltage stabilization, analog reference design, and transient suppression requiring stable component supply across consumer electronics, industrial control modules, and automotive body electronics.
Supply support for BZX79-C3V3,113 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, and consumer markets with high-volume, high-reliability components.
The BZX79 series belongs to Nexperia's legacy Zener diode product line, engineered for cost-sensitive, low-power voltage regulation and reference applications where stability, consistency, and long-term reliability are essential.
FAQ
What is the maximum continuous power dissipation for BZX79-C3V3,113?
The BZX79-C3V3,113 has a maximum total power dissipation of 500 mW at an ambient temperature of 50 °C with specified lead length and PCB mounting conditions. At higher ambient temperatures or with longer leads, derating applies per the thermal resistance of 380 K/W.
How does the temperature coefficient affect regulation accuracy?
This diode exhibits a negative temperature coefficient between −3.5 and −2.4 mV/K, meaning its Zener voltage decreases as junction temperature rises. For a 50 °C rise above 25 °C, the voltage shift is approximately −125 to −120 mV - critical for precision references in thermally variable environments.
Can BZX79-C3V3,113 be used in place of a 3.3 V LDO for voltage regulation?
No - it functions only as a shunt regulator requiring a series current-limiting resistor and cannot supply regulated output current like an LDO. It is suitable for low-current biasing or reference generation, not for powering loads directly.
Is the cathode marked on the BZX79-C3V3,113 package?
Yes - the cathode is identified by a distinct color band on the glass body of the SOD27 (DO-35) package, consistent with industry-standard axial diode marking conventions and confirmed in the official Nexperia outline drawing.
BZX79-C3V3,113 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):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-C3V3,113 FAQ
1.How can I place an order for BZX79-C3V3,113 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-C3V3,113 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-C3V3,113 reliable?
The price and inventory of BZX79-C3V3,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C3V3,113 is usually 5 days.
3.What payment methods are accepted for BZX79-C3V3,113?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C3V3,113 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-C3V3,113?
BZX79-C3V3,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-C3V3,113 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-C3V3,113?
For technical support, including BZX79-C3V3,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C3V3,113 requirements.
6.How does Aetrix verify that BZX79-C3V3,113 is sourced from the original manufacturer or authorized distributors?
All BZX79-C3V3,113 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-C3V3,113 meets industry standards.
7.What is the process for return or replacement of BZX79-C3V3,113?
All BZX79-C3V3,113 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C3V3,113, 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-C3V3,113 part is unused and in its original packaging.
Return procedure for BZX79-C3V3,113:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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