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Taiwan Semiconductor Corporation 1N4741G
- Part No.:
- 1N4741G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4741G.pdf
- Description:
- DIODE ZENER 11V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,159
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Product details
Overview
1N4741G from Taiwan Semiconductor is a 1 W, 11 V ±5% Zener diode in DO-41 glass package, designed for precision voltage regulation and reference applications with 8 Ω dynamic impedance at 23 mA test current and 5 µA leakage at 8.4 V reverse bias.
For engineers reviewing the 1N4741G datasheet, 1N4741G pinout, 1N4741G application, or 1N4741G equivalent, key selection criteria include Zener voltage tolerance, power dissipation limit, thermal resistance (RθJA = 100 °C/W), junction temperature range (–65 to +200 °C), and DO-41 mechanical compatibility.
Technical Context
The 1N4741G operates as a single-die, hermetically sealed silicon Zener diode optimized for stable DC voltage clamping and low-noise reference generation in linear regulator feedback paths and analog sensing circuits.
It exhibits a nominal Zener voltage of 11 V at 23 mA (IZT), with dynamic impedance of 8 Ω measured under AC superposition conditions, and maintains ≤5 µA leakage current at 8.4 V (0.76 × VZ) across its rated temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Nominal) | 11 V - precise clamping voltage at IZT = 23 mA |
| VZ Tolerance | ±5% - ensures voltage consistency across production lots |
| PD | 1 W - maximum continuous power dissipation at TA = 25 °C |
| ZZT | 8 Ω - low dynamic impedance enables stable regulation under load variation |
| IR @ VR | 5 µA @ 8.4 V - minimal leakage preserves accuracy in high-impedance reference nodes |
| TJ Range | –65 to +200 °C - supports operation in automotive under-hood and industrial environments |
| RθJA | 100 °C/W - defines thermal derating curve for PCB layout and heatsinking |
Pinout & Package
DO-41 axial-leaded glass package with cathode band marking; leads are pure tin plated per J-STD-002 for reliable solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration |
| Cathode | Zener breakdown terminal | Marked by band; connected to higher-potential node to enable regulated voltage drop |
Key Features
| Feature | Design Value |
|---|---|
| Hermetically sealed glass construction | Prevents moisture ingress and long-term parameter drift in humid environments |
| ±5% Zener voltage tolerance | Reduces need for post-production trimming in voltage reference designs |
| RoHS-compliant materials | Meets global environmental compliance requirements without lead or halogen restrictions |
| DO-41 mechanical standardization | Ensures compatibility with automated insertion equipment and legacy board layouts |
Applications
| Low-Voltage Stabilizers | On-Board DC/DC Converters |
|---|---|
Use Scenario: Providing stable 11 V bias for op-amp input stages in industrial sensor signal conditioning circuits. IC Role / Device Role: Voltage reference element establishing fixed reference potential for analog front-end circuitry. Use Value: Delivers 11 V ±5% with <5 µA leakage, minimizing offset error and enabling 16-bit ADC accuracy. | Use Scenario: Regulating feedback node voltage in isolated flyback converter secondary-side TL431-based control loops. IC Role / Device Role: Precision shunt reference supporting optocoupler-driven primary-side regulation. Use Value: Maintains 11 V reference stability over –40 to +125 °C ambient, reducing output voltage drift to <±1.2%. |
| Lighting Applications | Adapters |
Use Scenario: Overvoltage protection clamp for LED driver ICs in constant-current streetlight modules. IC Role / Device Role: Transient voltage suppressor limiting gate-source stress on MOSFET drivers during surge events. Use Value: Clamps at 11.6 V (VZ max) with 1 W power handling, preventing latch-up in 12 V nominal systems. | Use Scenario: Output voltage stabilization in wall-mounted AC/DC adapters powering consumer audio devices. IC Role / Device Role: Secondary-side Zener reference setting regulated 12 V output via linear post-regulator stage. Use Value: Enables ±5% output tolerance with <8 Ω impedance, meeting IEC 62368-1 no-load regulation requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4741A | Same 11 V nominal, ±5% tolerance, but manufactured by ON Semiconductor in DO-41; RθJA = 110 °C/W | Slightly higher thermal resistance limits power handling in compact layouts | Preferred where ON Semi supply chain alignment is required |
| BZX55C11 | 11 V ±5%, 500 mW rating, DO-35 package; ZZT = 20 Ω at 5 mA | Lower power and higher impedance reduce regulation accuracy in 23 mA load scenarios | Used where space-constrained PCBs favor smaller DO-35 footprint |
Compared with 1N4741A and BZX55C11, the 1N4741G offers superior thermal performance (RθJA = 100 °C/W) and lower dynamic impedance (8 Ω), making it optimal for 1 W continuous regulation at 23 mA where stability and temperature resilience are critical.
Availability
1N4741G is available at Aetrix Electronics and suitable for low-voltage stabilizers, on-board DC/DC converters, lighting applications, and adapter designs requiring stable component supply with full traceability and RoHS compliance.
Supply support for 1N4741G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, rectifiers, and Zener diodes with global distribution and AEC-Q200 qualified offerings.
The 1N47xxG series was developed to deliver cost-effective, high-reliability Zener references for industrial power supplies and consumer electronics, emphasizing tight voltage tolerance, hermetic sealing, and standardized DO-41 packaging.
FAQ
What is the nominal Zener voltage and tolerance of the 1N4741G?
The 1N4741G has a nominal Zener voltage of 11 V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 10.45 V and 11.55 V at 23 mA test current and 25 °C ambient temperature. This tolerance is confirmed in the Electrical Specifications table of the Taiwan Semiconductor datasheet Version G2301.
What is the maximum power dissipation rating for the 1N4741G?
The 1N4741G is rated for 1 W maximum continuous power dissipation at 25 °C ambient temperature. Derating is required above 25 °C at 10 mW/°C, based on its specified RθJA of 100 °C/W. This rating applies only when mounted on a standard FR-4 PCB with no additional heatsinking.
What package type does the 1N4741G use, and how is polarity indicated?
The 1N4741G uses the DO-41 axial-leaded glass package. Polarity is indicated by a visible cathode band near one end of the glass body; the banded end corresponds to the cathode terminal, which must be connected to the higher-potential side in Zener operation.
What is the Zener impedance (ZZT) of the 1N4741G, and under what conditions is it measured?
The 1N4741G has a typical Zener impedance (ZZT) of 8 Ω, measured at the test current IZT = 23 mA using a 60 Hz AC signal with RMS amplitude equal to 10% of IZT, superimposed on the DC bias - per the methodology defined in the Taiwan Semiconductor datasheet notes.
Is the 1N4741G RoHS compliant, and what plating is used on its leads?
Yes, the 1N4741G is RoHS compliant. Its leads are pure tin plated and meet J-STD-002 solderability requirements, ensuring reliable wetting and joint formation during reflow or wave soldering processes without lead or restricted substance content.
1N4741G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 8.4 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-204AL (DO-41)
1N4741G FAQ
1.How can I place an order for 1N4741G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4741G 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 1N4741G reliable?
The price and inventory of 1N4741G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4741G is usually 5 days.
3.What payment methods are accepted for 1N4741G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4741G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4741G?
1N4741G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4741G 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 1N4741G?
For technical support, including 1N4741G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4741G requirements.
6.How does Aetrix verify that 1N4741G is sourced from the original manufacturer or authorized distributors?
All 1N4741G 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 1N4741G meets industry standards.
7.What is the process for return or replacement of 1N4741G?
All 1N4741G units undergo pre-shipment inspection (PSI). If there is an issue with 1N4741G, 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 1N4741G part is unused and in its original packaging.
Return procedure for 1N4741G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4741G Tags
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