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Nexperia USA Inc. BZX79-C5V1,143
- Part No.:
- BZX79-C5V1,143
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-C5V1,143.pdf
- Description:
- DIODE ZENER 5.1V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:2,495
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Product details
Overview
BZX79-C5V1,143 from Nexperia is a ±5% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 5.0–5.4 V nominal Zener voltage at 5 mA test current, 400–480 Ω differential resistance, and −2.7 to −0.8 mV/K temperature coefficient. It delivers stable low-voltage reference in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the BZX79-C5V1,143 datasheet, BZX79-C5V1,143 pinout, BZX79-C5V1,143 application, or BZX79-C5V1,143 equivalent, this page provides verified electrical parameters, thermal behavior, package geometry, real-world use cases, and validated alternative parts for voltage reference design and board-level stabilization.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled Zener voltage tolerance (±5%), enabling precise DC voltage clamping and regulation in low-power analog and digital subsystems. Its differential resistance of 400–480 Ω at 5 mA defines output impedance under regulation, directly impacting load regulation error and ripple rejection.
The temperature coefficient of −2.7 to −0.8 mV/K indicates negative drift with rising junction temperature-critical for thermal stability in unheated enclosures or ambient-variable environments. Its 300 K/W junction-to-tie-point thermal resistance requires careful PCB trace width and pad layout to maintain Tj ≤ 150 °C during transient surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.0–5.4 V at IZ = 5 mA - sets regulated output level in shunt reference circuits |
| Differential Resistance (rdif) | 400–480 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | −2.7 to −0.8 mV/K - quantifies voltage drift per degree rise; enables thermal error budgeting |
| Reverse Current (IR) | ≤2 μA at VR = 2 V - ensures minimal leakage in standby or high-impedance bias networks |
| Total Power Dissipation (Ptot) | 500 mW at Tamb = 50 °C - defines maximum continuous DC power handling on standard FR-4 |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 μs - supports transient surge suppression without failure |
| Junction-to-Tie-Point Rth | 300 K/W - informs thermal design margin when mounted with 8 mm lead length |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode band marking. 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 shunt configuration | Connected to ground or lower potential node; carries forward current up to 250 mA |
| Cathode | Zener breakdown terminal / high-side connection in shunt configuration | Connected to input rail or regulated node; sustains reverse breakdown at 5.0–5.4 V |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables cost-effective voltage referencing where tight regulation is not required (e.g., non-critical biasing) |
| Hermetic glass SOD27 package | Provides long-term reliability and moisture resistance in industrial and automotive environments |
| 40 W non-repetitive peak power rating | Supports ESD and lightning-induced transient suppression without degradation |
| Low leakage (≤2 μA @ 2 V) | Minimizes quiescent current draw in battery-powered or ultra-low-power systems |
| −2.7 to −0.8 mV/K tempco | Allows predictable compensation in temperature-sensitive analog front-ends |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Used in TL431-based adjustable linear regulators to set output voltage via resistor divider. IC Role / Device Role / Timing Role: Provides stable 5.1 V reference point for error amplifier comparison. Use Value: Enables accurate ±5% output regulation across line/load variations without trimming. | Use Scenario: Placed across microcontroller I/O pins to limit voltage spikes from relay coil back-EMF. IC Role / Device Role / Timing Role: Acts as passive shunt clamp, diverting transient energy to ground before IC damage occurs. Use Value: Limits pin voltage to ≤5.4 V during 100 μs surges up to 40 W, preventing latch-up or gate oxide rupture. |
| ADC Reference Stabilization | Microcontroller Reset Circuit |
Use Scenario: Supplies clean reference to 12-bit SAR ADC in sensor signal conditioning module. IC Role / Device Role / Timing Role: Low-noise Zener source replacing noisy LDO output for precision conversion. Use Value: Reduces reference drift-induced INL error by stabilizing VREF against supply ripple and ambient shifts. | Use Scenario: Integrated into RC reset circuit to hold microcontroller in reset until VCC exceeds 4.8 V. IC Role / Device Role / Timing Role: Defines precise threshold voltage for brown-out detection via comparator input. Use Value: Ensures deterministic reset release at 5.0–5.4 V, eliminating marginal startup failures. |
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 | 5.1 V ±5%, Ptot = 1 W, DO-41 package (larger, higher thermal mass) | Higher power handling but larger footprint; less suitable for space-constrained PCBs | Select when >500 mW continuous dissipation or improved surge robustness is required |
| BZX84-C5V1 | 5.1 V ±5%, Ptot = 300 mW, SOT-23 surface-mount package | No axial leads; requires reflow assembly; lower power rating limits surge margin | Select for automated assembly and compact layouts where 40 W peak power is not needed |
Compared with BZX79-C5V1,143, the 1N4733A offers higher power headroom in a through-hole format, while the BZX84-C5V1 trades surge capability for miniaturization and SMT compatibility-choice depends on thermal, mechanical, and manufacturing constraints.
Availability
BZX79-C5V1,143 is available at Aetrix Electronics and suitable for low-voltage reference design, overvoltage protection circuits, and microcontroller reset supervision requiring stable component supply and long-lifecycle support.
Supply support for BZX79-C5V1,143 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, industrial, and consumer markets.
The BZX79 series belongs to Nexperia's legacy Zener diode product line, engineered for cost-effective, stable voltage regulation in general-purpose analog and power management circuits.
FAQ
What is the maximum continuous power dissipation for BZX79-C5V1,143?
The device is rated for 500 mW total power dissipation at ambient temperature of 50 °C with leads trimmed to 8 mm. At higher ambient temperatures, derating applies per the thermal resistance curve (Rth j-a = 380 K/W), and operation above 500 mW risks thermal runaway or parametric shift.
Can BZX79-C5V1,143 be used in surface-mount designs?
No-it uses an axial-leaded SOD27 (DO-35) glass package designed exclusively for through-hole mounting. For SMT equivalents, consider the BZX84-C5V1 (SOT-23) or MMBZ5222B (SOT-23), which share the same 5.1 V rating but differ in power and thermal performance.
How does the temperature coefficient affect regulation accuracy?
With a typical SZ of −2.7 to −0.8 mV/K, the Zener voltage decreases by up to 2.7 mV per °C rise in junction temperature. Over a 100 °C range, this yields up to 270 mV drift-requiring thermal isolation or compensation in precision references.
Is the cathode marked on the BZX79-C5V1,143 package?
Yes-the cathode is identified by a distinct color band (typically black or dark stripe) near one end of the glass body. This band must be oriented toward the higher-potential node in shunt regulator configurations to ensure proper reverse-bias operation.
BZX79-C5V1,143 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):
- 5.1 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 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-C5V1,143 FAQ
1.How can I place an order for BZX79-C5V1,143 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-C5V1,143 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-C5V1,143 reliable?
The price and inventory of BZX79-C5V1,143 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C5V1,143 is usually 5 days.
3.What payment methods are accepted for BZX79-C5V1,143?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C5V1,143 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-C5V1,143?
BZX79-C5V1,143 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-C5V1,143 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-C5V1,143?
For technical support, including BZX79-C5V1,143 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C5V1,143 requirements.
6.How does Aetrix verify that BZX79-C5V1,143 is sourced from the original manufacturer or authorized distributors?
All BZX79-C5V1,143 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-C5V1,143 meets industry standards.
7.What is the process for return or replacement of BZX79-C5V1,143?
All BZX79-C5V1,143 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C5V1,143, 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-C5V1,143 part is unused and in its original packaging.
Return procedure for BZX79-C5V1,143:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX79-C5V1,143 Tags
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