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Taiwan Semiconductor Corporation 1N4733G A0G
- Part No.:
- 1N4733G A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4733G A0G.pdf
- Description:
- DIODE ZENER 5.1V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,624
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Product details
Overview
1N4733G A0G from Taiwan Semiconductor is a 1 W, 5.1 V ±5% Zener diode in DO-41 glass package, designed for precision voltage regulation and reference applications with 49 mA test current, 7 Ω dynamic impedance at IZT, and 10 µA leakage at 1 V reverse bias. It serves as a stable shunt regulator in low-power DC/DC converters and LED driver bias networks.
For engineers reviewing the 1N4733G A0G datasheet, 1N4733G A0G pinout, 1N4733G A0G application, or 1N4733G A0G equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJA = 100 °C/W), power derating above 50 °C, and cathode-band polarity marking for unambiguous PCB orientation.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain a stable 5.1 V across its terminals under regulated current conditions. Its 7 Ω Zener impedance at 49 mA ensures low output voltage variation with load changes, while the hermetically sealed glass DO-41 package supports reliable operation up to 200 °C junction temperature.
The device exhibits 10 µA maximum leakage current at 1 V reverse voltage and achieves thermal stability via low RθJL (53.5 °C/W), enabling predictable power dissipation management in compact board layouts without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V nominal, ±5% tolerance - defines precise clamping/reference level for 5 V rail stabilization |
| Power Dissipation (PD) | 1 W at 25 °C - sets maximum continuous DC power handling before thermal shutdown or degradation |
| Zener Test Current (IZT) | 49 mA - operating point where VZ and impedance are specified; used for design validation |
| Zener Impedance (ZZT) | 7 Ω at IZT - determines AC ripple rejection and regulation sensitivity to current variation |
| Leakage Current (IR) | 10 µA at 1 V reverse - ensures minimal standby current draw in high-impedance bias networks |
| Junction Temp Range (TJ) | –65 to +200 °C - enables deployment in automotive under-hood and industrial control environments |
| Package | DO-41 glass - provides hermetic sealing, RoHS compliance, and standard through-hole solderability per J-STD-002 |
Pinout & Package
DO-41 axial-leaded glass package with cathode indicated by a single black band. Leads are pure tin-plated for reliable solder wetting. Device is polarity-sensitive: cathode must connect to higher potential for Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Lower-potential terminal during Zener conduction | Connects to circuit ground or return path; carries full reverse current when regulating |
| Cathode | Higher-potential terminal during Zener conduction | Marked with black band; connects to input/voltage source side of shunt regulator network |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables accurate 5.1 V reference without post-production trimming in cost-sensitive designs |
| Hermetically sealed glass case | Prevents moisture ingress and long-term parameter drift in humid or outdoor environments |
| RoHS-compliant construction | Meets global environmental regulations for commercial, industrial, and consumer electronics |
| 100 °C/W junction-to-ambient thermal resistance | Allows direct thermal modeling for natural-convection PCB layouts up to 0.5 W at 70 °C ambient |
Applications
| LED Driver Bias Reference | Low-Voltage Adapter Regulation |
|---|---|
Use Scenario: Providing stable bias voltage for constant-current LED driver ICs in portable lighting modules. IC Role / Device Role / Timing Role: Shunt voltage reference that sets current-sense threshold and compensates for supply ripple. Use Value: Maintains consistent LED brightness across 4.5–5.5 V input variations using only 1N4733G A0G and a series resistor. | Use Scenario: Regulating unregulated 6–9 V wall-adapter outputs to clean 5 V for microcontroller peripherals. IC Role / Device Role / Timing Role: Passive shunt regulator absorbing excess current to hold output steady under light loads. Use Value: Eliminates need for active LDO in space-constrained adapters where efficiency >85% is not required. |
| On-Board DC/DC Feedback | Industrial Sensor Signal Conditioning |
Use Scenario: Setting feedback voltage for isolated flyback converters powering PLC I/O modules. IC Role / Device Role / Timing Role: Precision voltage reference in optocoupler-coupled feedback loop to stabilize 5 V secondary output. Use Value: Achieves ±2% output regulation over –40 to +85 °C without trimming, leveraging 1N4733G A0G's tight VZ tolerance. | Use Scenario: Clamping and biasing analog front-end inputs in 4–20 mA loop-powered temperature transmitters. IC Role / Device Role / Timing Role: Overvoltage protector and reference node for op-amp level-shifting circuits. Use Value: Prevents ADC saturation during transient surges while maintaining 5.1 V reference for ratiometric sensor scaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A | Same 5.1 V rating and DO-41 package; ±5% tolerance; slightly higher ZZT (10 Ω vs. 7 Ω) | Marginally reduced ripple rejection in high-frequency regulation loops | Acceptable where tighter impedance is not critical and legacy stock is available |
| BZX55-C5V1 | 5.1 V ±5%, DO-35 package; 10 Ω ZZT; lower PD (500 mW) | Not suitable for 1 W continuous operation; requires derating above 50 °C | Only for low-power signal-level referencing where thermal margin permits |
Compared with 1N4733A and BZX55-C5V1, the 1N4733G A0G delivers superior thermal robustness (1 W rating, 200 °C TJ), lower dynamic impedance, and verified DO-41 mechanical compatibility-making it preferred for industrial power regulation where reliability under sustained load is essential.
Availability
1N4733G A0G is available at Aetrix Electronics and suitable for low-voltage stabilizers, on-board DC/DC converters, and LED lighting applications requiring stable component supply, consistent Zener voltage tolerance, and RoHS-compliant through-hole assembly.
Supply support for 1N4733G A0G 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 for industrial and consumer markets.
The 1N47xxG series was developed to deliver high-reliability, glass-encapsulated Zener references with tight tolerances and extended temperature capability for cost-sensitive power management in mass-produced electronics.
FAQ
What is the Zener voltage tolerance of the 1N4733G A0G?
The 1N4733G A0G has a nominal Zener voltage of 5.1 V with a standard tolerance of ±5%, meaning the actual measured VZ falls between 4.845 V and 5.355 V at 49 mA test current and 25 °C ambient. This tolerance is confirmed in the Electrical Specifications table of the Taiwan Semiconductor G2301 datasheet and applies to all units in the 1N4733G A0G production lot.
Can the 1N4733G A0G be used in surface-mount designs?
No, the 1N4733G A0G is packaged exclusively in the axial DO-41 through-hole configuration and lacks SMD-compatible variants. Its leads are designed for wave or hand soldering into plated-through holes. For surface-mount equivalents, consider the SMA-based BZX84-C5V1 or SOD-123 packaged MMBZ5222B, but note these differ in power rating, impedance, and thermal performance versus the 1N4733G A0G.
What is the maximum reverse leakage current for the 1N4733G A0G?
The maximum reverse leakage current for the 1N4733G A0G is 10 µA at 1 V reverse voltage (VR), as specified in the Electrical Specifications table. This value is measured at 25 °C and confirms minimal standby power loss in high-impedance bias networks-critical for battery-operated sensor nodes where the 1N4733G A0G may serve as a reference node.
How does the thermal resistance of the 1N4733G A0G affect its power derating?
The 1N4733G A0G has a junction-to-ambient thermal resistance (RθJA) of 100 °C/W. At 70 °C ambient, its usable power drops to approximately 0.7 W (calculated as (200 – 70) / 100). This derating curve must be applied in enclosed or high-temperature environments to prevent exceeding the 200 °C maximum junction temperature and ensure long-term reliability of the 1N4733G A0G.
Is the 1N4733G A0G RoHS compliant and lead-free?
Yes, the 1N4733G A0G is RoHS compliant and features lead-free, pure tin-plated leads conforming to J-STD-002 solderability standards. The "G" suffix in the part number denotes green compound encapsulation, and the device meets EU Directive 2011/65/EU requirements. This compliance is documented in Taiwan Semiconductor's G2301 datasheet revision and verified in third-party material declarations for the 1N4733G A0G.
1N4733G A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 7 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4733G A0G FAQ
1.How can I place an order for 1N4733G A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4733G A0G 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 1N4733G A0G reliable?
The price and inventory of 1N4733G A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4733G A0G is usually 5 days.
3.What payment methods are accepted for 1N4733G A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4733G A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4733G A0G?
1N4733G A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4733G A0G 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 1N4733G A0G?
For technical support, including 1N4733G A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4733G A0G requirements.
6.How does Aetrix verify that 1N4733G A0G is sourced from the original manufacturer or authorized distributors?
All 1N4733G A0G 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 1N4733G A0G meets industry standards.
7.What is the process for return or replacement of 1N4733G A0G?
All 1N4733G A0G units undergo pre-shipment inspection (PSI). If there is an issue with 1N4733G A0G, 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 1N4733G A0G part is unused and in its original packaging.
Return procedure for 1N4733G A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4733G A0G Tags
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