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Nexperia USA Inc. 1N4731A,113
- Part No.:
- 1N4731A,113
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4731A,113.pdf
- Description:
- DIODE ZENER 4.3V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:3,605
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Product details
Overview
1N4731A,113 from Nexperia is a 4.3 V ±5 % Zener voltage regulator diode in a hermetically sealed SOD66 (DO-41) glass package, rated for 1000 mW total power dissipation and 58 mA test current, used for low-voltage stabilization in linear power supply feedback paths and reference voltage generation.
For engineers reviewing the 1N4731A,113 datasheet, 1N4731A,113 pinout, 1N4731A,113 application, or 1N4731A,113 equivalent, this device serves as a precision shunt reference with 9 Ω differential resistance, 10 µA reverse leakage at 1 V, and stable operation up to +200 °C junction temperature in space-constrained analog circuits.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 4.3 V reference across its terminals under regulated current conditions. It exhibits 9 Ω dynamic impedance at 58 mA test current and supports continuous forward conduction up to 500 mA.
Thermal resistance from junction to tie-point is 110 K/W with 4 mm lead length, enabling reliable thermal management in ambient temperatures from −65 °C to +200 °C. Reverse current remains ≤10 µA at 1 V, ensuring low quiescent error in precision bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 4.3 V nominal ±5 % - defines precise shunt regulation point for feedback loops |
| Test current Itest | 58 mA - operating point where VZ and dynamic impedance are specified |
| Differential resistance rdif | 9 Ω - low impedance ensures minimal output voltage variation under load changes |
| Reverse current IR | ≤10 µA at 1 V - guarantees negligible leakage in high-impedance reference nodes |
| Total power dissipation Ptot | 1000 mW - enables use in medium-power regulator stages without forced cooling |
| Junction temperature Tj | −65 °C to +200 °C - supports industrial and automotive under-hood applications |
| Forward voltage VF | ≤1.2 V at 200 mA - allows safe forward conduction during transient overvoltage events |
Pinout & Package
Hermetically sealed SOD66 (DO-41) axial glass package with cathode indicated by a colored band. Leads are tinned copper, suitable for through-hole mounting and wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-biased during Zener operation |
| 2 (non-banded end) | Anode | Connected to ground or lower-potential rail; completes shunt current path |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid environments |
| ±5 % voltage tolerance | Enables direct use in cost-sensitive designs without post-production trimming |
| 1000 mW power rating | Supports >100 mA shunt current capability with adequate thermal margin |
| 9 Ω dynamic impedance | Minimizes output voltage deviation under ±10 mA load step transients |
| −65 °C to +200 °C operating range | Validates suitability for extended-temperature industrial control modules |
Applications
| Linear Power Supply Feedback | Microcontroller Reference Voltage |
|---|---|
Use Scenario: Stabilizing output voltage of adjustable 3-terminal regulators (e.g., LM317) via resistor divider feedback. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 4.3 V setpoint for error amplifier comparison. Use Value: Enables accurate 5 V or 12 V outputs with <±1 % regulation error over line/load/temperature. |
Use Scenario: Generating stable analog reference for ADC inputs or internal bandgap calibration in MCU systems. IC Role / Device Role / Timing Role: Low-drift DC reference source replacing internal VREF when higher accuracy is required. Use Value: Reduces ADC quantization error by limiting reference variation to <10 mV over −40 °C to +85 °C. |
| Overvoltage Clamp Protection | Current Source Bias Network |
Use Scenario: Protecting sensitive analog front-end inputs from transient surges exceeding 4.7 V. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated above 4.3 V breakdown threshold. Use Value: Limits peak input voltage to ≤4.7 V with <100 ns response, preventing op-amp saturation or damage. |
Use Scenario: Establishing constant-current bias for LED drivers or transistor amplifiers using two-resistor + Zener topology. IC Role / Device Role / Timing Role: Stable voltage node defining base-emitter or gate-source bias potential. Use Value: Delivers ±2 % current stability over 10:1 supply variation due to tight VZ tolerance and low rdif. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4731A-T | Same electrical specs; tape-and-reel packaging (vs. bulk/ammopack for ,113) | No functional difference; suited for automated SMT placement instead of manual/hand-soldered assembly | Select when integrating into high-volume PCB assembly with pick-and-place equipment |
| BZX55-C4V3 | 4.3 V ±5 %, but 500 mW rating and 60 Ω dynamic impedance vs. 9 Ω | Lower power handling and higher impedance limit use in precision feedback or high-current clamping | Acceptable only where power stress <500 mW and regulation error budget >±20 mV is permitted |
Compared with 1N4731A,113, the 1N4731A-T offers identical regulation performance with logistics compatibility for automated manufacturing, while BZX55-C4V3 trades off precision and power capacity for lower cost in non-critical biasing roles.
Availability
1N4731A,113 is available at Aetrix Electronics and suitable for linear power supplies, microcontroller reference circuits, overvoltage protection networks, and current-source bias networks requiring stable component supply with guaranteed long-term parametric consistency.
Supply support for 1N4731A,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 semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, reliability, and miniaturization for industrial and automotive markets.
The 1N47xxA series is part of Nexperia's precision Zener regulator portfolio, engineered for stable voltage reference and shunt regulation in analog power management and signal conditioning applications.
FAQ
What is the maximum continuous reverse current the 1N4731A,113 can handle without degradation?
The device supports a working current IZ of 58 mA at its nominal 4.3 V Zener voltage, with non-repetitive peak reverse current IZSM rated at 1070 mA. Continuous operation must remain within the 1000 mW power limit, corresponding to ~232 mA at 4.3 V - but derating per thermal resistance (110 K/W) is required above 50 °C ambient.
Can the 1N4731A,113 be used in surface-mount designs?
No - the 1N4731A,113 uses the axial-leaded SOD66 (DO-41) glass package, which is designed for through-hole mounting. For surface-mount equivalents, consider Nexperia's BZX384-B4V3 (SOD-323, 4.3 V, 300 mW) or BZX584C4V3 (SOD-523, 4.3 V, 200 mW), both with tighter tolerances but lower power ratings.
How does the 9 Ω differential resistance affect circuit stability in feedback applications?
A 9 Ω dynamic impedance means that a ±10 mA change in shunt current causes only ±90 mV shift in regulated voltage - critical for maintaining loop gain and phase margin in switching or linear regulator feedback networks. This low rdif directly improves load regulation to <0.1 % per 10 mA load step.
Is the 1N4731A,113 suitable for automotive under-hood environments?
Yes - its −65 °C to +200 °C junction temperature rating and hermetic glass construction meet extended-temperature requirements for engine control units and body electronics. However, system-level thermal design must ensure junction temperature stays below 200 °C under worst-case power dissipation and ambient conditions.
1N4731A,113 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 9 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
1N4731A,113 FAQ
1.How can I place an order for 1N4731A,113 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4731A,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 1N4731A,113 reliable?
The price and inventory of 1N4731A,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4731A,113 is usually 5 days.
3.What payment methods are accepted for 1N4731A,113?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4731A,113 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4731A,113?
1N4731A,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4731A,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 1N4731A,113?
For technical support, including 1N4731A,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4731A,113 requirements.
6.How does Aetrix verify that 1N4731A,113 is sourced from the original manufacturer or authorized distributors?
All 1N4731A,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 1N4731A,113 meets industry standards.
7.What is the process for return or replacement of 1N4731A,113?
All 1N4731A,113 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4731A,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 1N4731A,113 part is unused and in its original packaging.
Return procedure for 1N4731A,113:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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