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Nexperia USA Inc. 1N4745A,113
- Part No.:
- 1N4745A,113
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4745A,113.pdf
- Description:
- DIODE ZENER 16V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:7,372
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Product details
Overview
1N4745A,113 from Nexperia is a 16 V ±5 % Zener voltage regulator diode in a hermetically sealed SOD66 (DO-41) glass package, rated for 1000 mW total power dissipation and 500 mA maximum forward current, used for low-voltage stabilization in linear power supplies and reference circuits.
For engineers reviewing the 1N4745A,113 datasheet, 1N4745A,113 pinout, 1N4745A,113 application, or 1N4745A,113 equivalent, key selection criteria include nominal Zener voltage (16 V), test current (15.5 mA), differential resistance (16 Ω), reverse leakage (≤5 µA at 12.2 V), and thermal resistance (110 K/W).
Technical Context
This Zener diode operates in reverse breakdown to maintain stable DC voltage under varying load or input conditions. It delivers precise regulation at 16 V with 5 % tolerance and exhibits low dynamic impedance (16 Ω) at 15.5 mA test current, enabling effective ripple suppression in analog references.
Designed for operation up to +200 °C junction temperature, it uses axial-leaded hermetic glass construction for long-term stability and moisture resistance. Its 110 K/W thermal resistance from junction to tie-point requires adequate lead length (4 mm) for reliable 1000 mW power handling in still air.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V nominal, ±5 % tolerance - ensures stable reference within 15.2–16.8 V across temperature and current variation |
| Test Current (Itest) | 15.5 mA - defined operating point where VZ and dynamic impedance are specified |
| Differential Resistance (rdif) | 16 Ω at Itest - low impedance enables tight regulation against load transients |
| Reverse Current (IR) | ≤5 µA at 12.2 V - minimal leakage preserves accuracy in high-impedance bias networks |
| Total Power Dissipation (Ptot) | 1000 mW at Tamb = 50 °C - supports robust operation in compact linear regulator stages |
| Forward Voltage (VF) | ≤1.2 V at IF = 200 mA - defines conduction loss when used in forward-biased protection paths |
Pinout & Package
Package: SOD66 (DO-41), hermetically sealed axial glass package with 2 leads; cathode identified by a colored band.
| 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 current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass encapsulation | Prevents moisture ingress and parameter drift over time, critical for long-life industrial references |
| ±5 % Zener voltage tolerance | Enables direct use in cost-sensitive applications without post-production trimming |
| 1000 mW power rating | Supports regulation of moderate-current rails (e.g., ±15 V op-amp supplies) without external heatsinking |
| Low differential resistance (16 Ω) | Minimizes output voltage shift under ±10 mA load variation - ideal for precision analog references |
Applications
| Linear Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing unregulated DC outputs in discrete linear regulators (e.g., 78xx-based designs). IC Role / Device Role / Timing Role: Zener diode provides fixed reference voltage for feedback or error amplifier biasing. Use Value: Maintains output regulation within ±1 % despite ±10 % input ripple and 100 mA load step changes. |
Use Scenario: Clamping transient spikes on low-voltage signal lines (e.g., sensor inputs, microcontroller I/O). IC Role / Device Role / Timing Role: Reverse-biased Zener shunts excess energy above 16 V to ground. Use Value: Limits peak voltage to ≤16.8 V with <5 µA leakage below clamp threshold, preserving signal integrity. |
| Fixed-Voltage Bias Network | Analog Circuit Reference |
Use Scenario: Generating stable bias points for transistor amplifiers or op-amp level-shifting stages. IC Role / Device Role / Timing Role: Provides temperature-stable DC offset independent of supply fluctuations. Use Value: Delivers 16 V reference with <0.1 %/°C drift over −40 °C to +125 °C ambient range. |
Use Scenario: Serving as primary voltage reference in analog-to-digital converter (ADC) front-end circuits. IC Role / Device Role / Timing Role: Supplies clean, low-noise reference to ADC voltage reference input pin. Use Value: Achieves <0.5 LSB integral nonlinearity error due to low dynamic impedance (16 Ω) and minimal leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4745A-T | Same electrical specs; tape-and-reel packaging (vs. bulk/ammopack for ,113); identical SOD66 footprint | Optimized for automated SMT placement; no manual handling or lead-forming required | Select when integrating into high-volume PCB assembly with pick-and-place equipment |
| BZX85C16 | 16 V ±5 %, but higher differential resistance (20 Ω) and lower Ptot (1300 mW derated to 1000 mW at 50 °C) | Plastic DO-41 package; less hermetic than glass - reduced long-term stability in humid environments | Acceptable for cost-driven consumer designs where 20-year shelf life is not required |
Compared with 1N4745A-T and BZX85C16, the 1N4745A,113 offers superior long-term parametric stability due to hermetic glass sealing and matches the exact 16 V/15.5 mA/16 Ω specification set required for precision analog references.
Availability
1N4745A,113 is available at Aetrix Electronics and suitable for linear power supply references, overvoltage protection clamps, fixed-voltage bias networks, and analog circuit references requiring stable component supply and traceable sourcing.
Supply support for 1N4745A,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, founded as a spin-off from NXP in 2017 and headquartered in Nijmegen, Netherlands.
The 1N47xxA series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for cost-effective, stable voltage regulation in industrial, automotive, and consumer power management systems.
FAQ
What is the maximum continuous reverse voltage that 1N4745A,113 can regulate without degradation?
The 1N4745A,113 is rated for nominal Zener voltage of 16 V ±5 %, meaning it maintains stable regulation between 15.2 V and 16.8 V. Its absolute maximum reverse voltage is not specified separately; operation beyond 16.8 V risks exceeding power limits or thermal runaway if current is not externally limited to ≤15.5 mA.
Can 1N4745A,113 be used in surface-mount designs?
No - the 1N4745A,113 uses the axial-leaded SOD66 (DO-41) through-hole package and is not compatible with standard SMT reflow processes. For surface-mount equivalents, consider Nexperia's BZT52-B16 or MMBZ5245B, which offer matching 16 V Zener voltage in SOT-23 packages.
How does junction temperature affect the Zener voltage accuracy of 1N4745A,113?
The 1N4745A,113 exhibits a typical temperature coefficient of +0.05 %/°C near 16 V. Over a −40 °C to +125 °C junction range, this results in a total VZ shift of approximately ±0.8 V - a known design factor accounted for in precision reference circuits using temperature compensation networks.
Is derating required when operating 1N4745A,113 above 50 °C ambient temperature?
Yes - the datasheet specifies 1000 mW total power dissipation only at Tamb = 50 °C. Above that, linear derating applies: 8.3 mW/°C reduction starting at 50 °C, reaching zero power at 170 °C. At 70 °C ambient, maximum allowable power drops to 834 mW to prevent junction temperature exceeding +200 °C.
1N4745A,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):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 16 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 12.2 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
1N4745A,113 FAQ
1.How can I place an order for 1N4745A,113 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4745A,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 1N4745A,113 reliable?
The price and inventory of 1N4745A,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4745A,113 is usually 5 days.
3.What payment methods are accepted for 1N4745A,113?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4745A,113 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4745A,113?
1N4745A,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4745A,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 1N4745A,113?
For technical support, including 1N4745A,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4745A,113 requirements.
6.How does Aetrix verify that 1N4745A,113 is sourced from the original manufacturer or authorized distributors?
All 1N4745A,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 1N4745A,113 meets industry standards.
7.What is the process for return or replacement of 1N4745A,113?
All 1N4745A,113 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4745A,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 1N4745A,113 part is unused and in its original packaging.
Return procedure for 1N4745A,113:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4745A,113 Tags
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