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Nexperia USA Inc. BZX79-C2V4,133
- Part No.:
- BZX79-C2V4,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-C2V4,133.pdf
- Description:
- DIODE ZENER 2.4V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:9,220
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Product details
Overview
BZX79-C2V4,133 from Nexperia is a ±5% tolerance Zener voltage regulator diode with nominal 2.4 V breakdown voltage at 5 mA test current, 600 Ω maximum differential resistance, and −3.5 to −1.6 mV/K temperature coefficient. It operates as a low-power voltage reference in bias networks and analog signal conditioning circuits, rated for 500 mW total power dissipation at 50 °C ambient.
For engineers reviewing the BZX79-C2V4,133 datasheet, BZX79-C2V4,133 pinout, BZX79-C2V4,133 application, or BZX79-C2V4,133 equivalent, this part serves as a cost-optimized, glass-encapsulated Zener for precision low-voltage stabilization where ±5% tolerance is acceptable and thermal drift must be managed below 150 °C junction temperature.
Technical Context
This diode functions exclusively in reverse-biased Zener breakdown mode, with specified regulation at IZtest = 5 mA and VZ = 2.4 V (min 2.2 V, max 2.6 V). Its differential resistance of up to 600 Ω directly impacts output impedance in shunt-regulator configurations.
The negative temperature coefficient (−3.5 to −1.6 mV/K) indicates decreasing breakdown voltage with rising junction temperature - critical for thermal stability analysis in unregulated supply rails and sensor biasing circuits operating across −65 °C to +200 °C storage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 2.4 V nominal at IZ = 5 mA; min/max 2.2–2.6 V defines regulation window for low-voltage reference design |
| Differential Resistance (rdif) | ≤600 Ω at IZ = 5 mA; determines load regulation error under varying current draw |
| Reverse Current (IR) | ≤50 μA at VR = 1 V; sets minimum bias current needed to maintain regulation onset |
| Total Power Dissipation (Ptot) | 500 mW at Tamb = 50 °C; defines maximum continuous DC power handling on standard PCB |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 μs; supports transient overvoltage clamping in surge protection front-ends |
| Junction Temperature Range | −65 °C to +200 °C; enables operation in automotive under-hood and industrial control environments |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode indicated by a single band. Leads are tinned copper alloy; body diameter 1.85 mm, length 4.25 mm, lead spacing 25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node in shunt regulator topology |
| Cathode | Reverse breakdown terminal / regulated output node | Connected to input rail; develops stable 2.4 V relative to anode when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| ±5% voltage tolerance | Cost-optimized specification for non-critical biasing where tight regulation is unnecessary |
| 500 mW power rating | Enables use in low-power analog stages without heatsinking on standard FR-4 PCB |
| Hermetic glass SOD27 package | Provides long-term reliability and moisture resistance in harsh environments |
| −65 °C to +200 °C operating range | Supports deployment in extended-temperature industrial and automotive applications |
Applications
| Low-Voltage Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Providing stable 2.4 V reference for analog front-end amplifiers in temperature or pressure sensors. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, sinking excess current to maintain fixed bias point. Use Value: Enables accurate ADC conversion by stabilizing op-amp input common-mode voltage despite supply ripple. |
Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers with internal brown-out detection disabled. IC Role / Device Role / Timing Role: Functions as precision voltage threshold detector in RC-based reset generator. Use Value: Ensures reliable power-on reset assertion at exactly 2.4 V, preventing premature MCU wake-up during ramp-up. |
| LED Current Regulation | Overvoltage Clamp in Signal Lines |
|
Use Scenario: Setting constant forward current for indicator LEDs in battery-powered portable devices. IC Role / Device Role / Timing Role: Zener establishes reference voltage across current-setting resistor in series LED driver. Use Value: Maintains consistent LED brightness across 2.8–3.6 V Li-ion battery discharge curve. |
Use Scenario: Protecting RS-232 or GPIO lines from ESD-induced transients in industrial HMI panels. IC Role / Device Role / Timing Role: Acts as fast-acting shunt clamp, diverting surge energy before IC input structures fail. Use Value: Limits line voltage to ≤2.6 V peak during 100 μs surges, preserving downstream logic integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4730A | 2.4 V nominal, ±5%, 1 W rating, DO-41 package | Higher power handling but larger footprint and higher thermal resistance | Select when >500 mW continuous dissipation or board-level mechanical robustness is required |
| BZX55-C2V4 | 2.4 V nominal, ±5%, 500 mW, DO-35 package, higher rdif (up to 1000 Ω) | Less precise regulation due to higher dynamic impedance | Choose only if legacy BOM compatibility outweighs regulation accuracy requirements |
Compared with 1N4730A and BZX55-C2V4, BZX79-C2V4,133 offers tighter differential resistance control (≤600 Ω vs. ≥1000 Ω) and superior thermal performance in the compact SOD27 package, making it optimal for space-constrained, low-drift analog references.
Availability
BZX79-C2V4,133 is available at Aetrix Electronics and suitable for low-voltage sensor biasing, microcontroller reset generation, and LED current setting requiring stable component supply across automotive, industrial control, and consumer electronics programs.
Supply support for BZX79-C2V4,133 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, specializing in high-volume, high-reliability components for automotive and industrial markets.
BZX79-C2V4,133 belongs to the BZX79 series of low-power Zener diodes designed specifically for cost-sensitive, space-constrained voltage reference and stabilization applications in consumer and computing systems.
FAQ
What is the maximum continuous reverse current this diode can handle at 2.4 V?
The BZX79-C2V4,133 does not specify a maximum continuous reverse current at exactly 2.4 V. Instead, its regulation behavior is defined at IZtest = 5 mA, with a maximum reverse current of 50 μA at VR = 1 V. Continuous operation occurs within the Zener breakdown region above the knee voltage, limited by the 500 mW power rating and thermal constraints.
Can this diode be used in parallel for higher current capability?
No - Zener diodes like the BZX79-C2V4,133 should not be paralleled due to manufacturing variations in breakdown voltage and dynamic resistance. Even small mismatches cause current hogging, leading to thermal runaway and premature failure. Use a single higher-power Zener or active regulation instead.
Is the SOD27 package compatible with automated through-hole assembly?
Yes - the SOD27 (DO-35) package has standardized axial leads with 25.4 mm pitch and tinned terminations, fully compatible with wave soldering and selective soldering processes used in high-volume through-hole assembly lines.
How does the temperature coefficient affect regulation accuracy over −40 °C to +85 °C?
With a typical temperature coefficient of −2.5 mV/K, the BZX79-C2V4,133 exhibits ~125 mV total drift across a 50 K span - shifting VZ from ~2.46 V at −40 °C to ~2.34 V at +85 °C. This 5% relative change must be accounted for in precision reference designs.
BZX79-C2V4,133 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):
- 2.4 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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-C2V4,133 FAQ
1.How can I place an order for BZX79-C2V4,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-C2V4,133 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-C2V4,133 reliable?
The price and inventory of BZX79-C2V4,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C2V4,133 is usually 5 days.
3.What payment methods are accepted for BZX79-C2V4,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C2V4,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-C2V4,133?
BZX79-C2V4,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-C2V4,133 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-C2V4,133?
For technical support, including BZX79-C2V4,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C2V4,133 requirements.
6.How does Aetrix verify that BZX79-C2V4,133 is sourced from the original manufacturer or authorized distributors?
All BZX79-C2V4,133 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-C2V4,133 meets industry standards.
7.What is the process for return or replacement of BZX79-C2V4,133?
All BZX79-C2V4,133 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C2V4,133, 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-C2V4,133 part is unused and in its original packaging.
Return procedure for BZX79-C2V4,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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