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Nexperia USA Inc. 1N4747A,113
- Part No.:
- 1N4747A,113
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4747A,113.pdf
- Description:
- DIODE ZENER 20V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:7,190
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Product details
Overview
1N4747A,113 from Nexperia is a 20 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 precision low-voltage stabilization in linear power supplies and reference circuits.
For engineers reviewing the 1N4747A,113 datasheet, 1N4747A,113 pinout, 1N4747A,113 application, or 1N4747A,113 equivalent, key selection criteria include nominal Zener voltage (20 V), test current (12.5 mA), differential resistance (22 Ω), reverse leakage (≤5 µA at 15.2 V), and thermal resistance (110 K/W).
Technical Context
This device operates as a two-terminal voltage reference by exploiting the controlled reverse breakdown of a heavily doped p-n junction. It maintains stable output voltage across load and line variations when biased with a series current-limiting resistor.
Its 22 Ω dynamic impedance at 12.5 mA ensures tight regulation under moderate current changes, while its 110 K/W junction-to-tie-point thermal resistance requires attention to lead length and PCB copper area for sustained 1000 mW operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 20 V nominal ±5 % - defines regulated output voltage under 12.5 mA test current |
| Differential resistance rdif | 22 Ω - determines output voltage deviation per mA change in Zener current |
| Test current Itest | 12.5 mA - required bias current to achieve nominal VZ specification |
| Reverse current IR | ≤5 µA at 15.2 V - ensures minimal leakage below knee of breakdown curve |
| Total power dissipation Ptot | 1000 mW - maximum steady-state power handling at Tamb = 50 °C |
| Forward voltage VF | ≤1.2 V at 200 mA - enables use as clamping or protection diode in forward bias |
| Junction temperature range | −65 °C to +200 °C - supports operation in extended industrial and automotive ambient conditions |
Pinout & Package
Hermetically sealed axial-leaded SOD66 (DO-41) glass package with 2 mm diameter body and 25.4 mm overall length; cathode identified by single black 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 bias path through series resistor |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid environments |
| ±5 % voltage tolerance | Enables direct replacement in legacy 20 V reference designs without recalibration |
| 1000 mW power rating | Supports up to 50 mA load current at 20 V with adequate heatsinking via leads |
| Low 22 Ω dynamic impedance | Delivers ≤0.22 V output shift per 10 mA load variation, improving regulation accuracy |
| 200 °C max junction temperature | Allows reliable operation in high-temperature enclosures without derating below 100 °C ambient |
Applications
| Linear Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing unregulated DC output of transformer-rectifier-filter stage in bench power supplies. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing fixed 20 V reference for error amplifier feedback network. Use Value: Maintains ±0.5 V output stability over 10–50 mA load range due to 22 Ω rdif and 12.5 mA Itest. |
Use Scenario: Limiting transient voltage spikes on 15 V logic rails caused by inductive switching or ESD events. IC Role / Device Role / Timing Role: Reverse-biased clamping element diverting excess energy to ground when voltage exceeds 20 V. Use Value: Responds within nanoseconds with <5 µA leakage below clamp threshold, preserving signal integrity. |
| Current Source Biasing | Analog Sensor Excitation |
Use Scenario: Generating stable bias current for op-amp input stages or transistor amplifiers using constant-voltage drop across series resistor. IC Role / Device Role / Timing Role: Fixed-voltage node enabling precise current setting via Ohm's Law (I = (Vin − 20 V)/R). Use Value: Delivers 1% current accuracy over temperature due to tight 20 V ±5 % tolerance and low rdif. |
Use Scenario: Providing excitation voltage to resistive temperature detectors (RTDs) or strain gauges requiring stable 20 V supply. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing higher-cost IC references in cost-sensitive industrial sensors. Use Value: Enables 0.1 °C RTD resolution with <0.05 % line regulation error over 10–100 mA sourcing range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4747A-T | Same electrical specs; tape-and-reel packaging (3000 pcs/reel) vs. bulk (113 = 1000 pcs/bulk) | No functional difference; suited for automated SMT assembly instead of manual/hand-soldered prototyping | Select for volume production with pick-and-place equipment; identical performance in circuit |
| BZX55C20 | 20 V ±5 %, but 500 mW rating and 15 Ω rdif; smaller DO-35 package | Limited to ≤25 mA continuous current; unsuitable for >500 mW thermal loads or high-current references | Choose only where space-constrained and power <500 mW; verify thermal margin with Rth(j-a) = 500 K/W |
Compared with 1N4747A,113, the 1N4747A-T offers identical regulation performance in automated manufacturing formats, while BZX55C20 trades 50 % power capability and higher thermal resistance for smaller footprint-making it viable only in low-power, space-critical designs.
Availability
1N4747A,113 is available at Aetrix Electronics and suitable for linear power supplies, overvoltage protection circuits, and analog sensor excitation systems requiring stable component supply with consistent Zener voltage and thermal performance.
Supply support for 1N4747A,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.
The 1N47xxA series belongs to Nexperia's general-purpose Zener diode product line, engineered for robust voltage regulation in cost-sensitive industrial, consumer, and power management applications.
FAQ
What is the maximum continuous reverse current the 1N4747A,113 can handle at 20 V?
The 1N4747A,113 is rated for a maximum working current (IZ) of 15.2 mA at its nominal 20 V Zener voltage. Exceeding this value continuously risks exceeding the 1000 mW power limit and thermal runaway, especially above 50 °C ambient. Derating is required per the thermal resistance curve in the datasheet.
Can the 1N4747A,113 be used in forward conduction mode?
Yes - it functions as a standard silicon rectifier diode in forward bias, with ≤1.2 V forward voltage at 200 mA. This allows dual-use in circuits requiring both Zener regulation and polarity protection, though its 500 mA absolute maximum forward current must not be exceeded.
How does the 1N4747A,113's 22 Ω dynamic impedance affect load regulation?
A 22 Ω rdif means the output voltage shifts by 22 mV per 1 mA change in Zener current. For a 10 mA load variation, this results in ~0.22 V drift - acceptable in non-critical references but insufficient for precision instrumentation without additional buffering or feedback.
Is the 1N4747A,113 RoHS compliant and halogen-free?
Yes - Nexperia confirms the 1N4747A,113 meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, with no brominated flame retardants or chlorine-based compounds in the glass package or internal construction.
1N4747A,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):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 22 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 15.2 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
1N4747A,113 FAQ
1.How can I place an order for 1N4747A,113 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4747A,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 1N4747A,113 reliable?
The price and inventory of 1N4747A,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4747A,113 is usually 5 days.
3.What payment methods are accepted for 1N4747A,113?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4747A,113 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4747A,113?
1N4747A,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4747A,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 1N4747A,113?
For technical support, including 1N4747A,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4747A,113 requirements.
6.How does Aetrix verify that 1N4747A,113 is sourced from the original manufacturer or authorized distributors?
All 1N4747A,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 1N4747A,113 meets industry standards.
7.What is the process for return or replacement of 1N4747A,113?
All 1N4747A,113 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4747A,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 1N4747A,113 part is unused and in its original packaging.
Return procedure for 1N4747A,113:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4747A,113 Tags
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