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onsemi 1N4735A_NT50A
- Part No.:
- 1N4735A_NT50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4735A_NT50A.pdf
- Description:
- DIODE ZENER 6.2V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:3,724
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Product details
Overview
1N4735A_NT50A from ON Semiconductor is a 6.2 V, 1.0 W Zener diode in DO-41 glass package, designed for precision voltage regulation and reference applications at 37 mA test current, with 41 Ω dynamic impedance and ±5% tolerance. It operates across -65°C to +200°C and supports reverse surge currents up to 730 mA.
For engineers reviewing the 1N4735A_NT50A datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (6.2 V), power dissipation (1.0 W), thermal derating (6.67 mW/°C above 50°C), leakage current (10 µA at 5 V), and Zener impedance (41 Ω @ 37 mA).
Technical Context
The 1N4735A_NT50A functions as a two-terminal silicon Zener diode operating in reverse breakdown mode, delivering stable reference voltage under controlled current conditions. Its design centers on tight voltage regulation at IZ = 37 mA, with low dynamic impedance (41 Ω) ensuring minimal output variation under load changes.
It features a DO-41 axial leaded glass package rated for 1.0 W power dissipation at TL ≤ 50°C, with thermal derating starting at 6.67 mW/°C beyond that temperature. The device maintains specified electrical performance across -65°C to +200°C operating and storage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal at 37 mA - defines precise regulation point for reference circuits |
| Power Dissipation (PD) | 1.0 W @ TL ≤ 50°C - sets maximum continuous power handling in standard lead configuration |
| Zener Impedance (ZZ) | 41 Ω @ IZ = 37 mA - indicates low AC resistance for stable voltage under varying current |
| Tolerance | ±5% - ensures VZ falls between 5.89 V and 6.51 V at 25°C |
| Leakage Current (IR) | 10 µA max at VR = 5 V - confirms low off-state conduction for energy-sensitive bias networks |
| Operating Temperature | -65°C to +200°C - enables use in automotive under-hood, industrial, and aerospace environments |
Pinout & Package
DO-41 glass axial package with cathode band marking; two-terminal device requiring no external biasing or control signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reverse breakdown reference ground node | Connected to circuit common or lower potential side in shunt regulator configuration |
| Cathode | Zener voltage reference output terminal | Provides regulated 6.2 V relative to anode when reverse biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Stable Zener voltage | 6.2 V ±5% at 37 mA - enables accurate voltage references in analog and power supply feedback paths |
| Low dynamic impedance | 41 Ω @ IZ = 37 mA - minimizes output voltage deviation during transient load shifts |
| High surge capability | 730 mA non-repetitive peak reverse current - withstands short-duration overvoltage transients |
| Wide temperature range | -65°C to +200°C operation - supports deployment in extreme environmental conditions without derating |
Applications
| Power Supply Regulation | Overvoltage Protection |
|---|---|
Use Scenario: Shunt regulation in low-power linear supplies or as voltage reference in switching converter feedback networks. IC Role / Device Role / Timing Role: Voltage reference element providing stable 6.2 V reference for error amplifiers or comparators. Use Value: Maintains output accuracy within ±5% across temperature and line variations due to tight VZ tolerance and low ZZ. |
Use Scenario: Clamping transient voltages on signal lines or DC rails to prevent damage to downstream ICs. IC Role / Device Role / Timing Role: Passive clamping device limiting voltage excursions to 6.2 V + forward drop of series protection elements. Use Value: Absorbs up to 730 mA surge current without failure, protecting sensitive inputs in industrial I/O modules. |
| Reference Voltage Source | Current Source Biasing |
Use Scenario: Generating precision bias points for op-amp circuits, ADC references, or sensor excitation. IC Role / Device Role / Timing Role: Stable voltage source enabling repeatable analog signal conditioning and measurement calibration. Use Value: Delivers 6.2 V reference with <10 µA leakage at 5 V, minimizing loading error in high-impedance reference nodes. |
Use Scenario: Establishing constant current through LEDs, photodiodes, or transistor bias networks using resistor-Zener combination. IC Role / Device Role / Timing Role: Fixed-voltage node enabling predictable current setpoint via Ohm's Law with series resistor. Use Value: Enables stable 37 mA current source with <41 Ω output impedance, reducing sensitivity to supply ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | Same Zener voltage (6.2 V), identical DO-41 package, same 1.0 W rating and ±5% tolerance - differs only in marking format (no "_NT50A" suffix) | No functional difference; used interchangeably in all 1N4735A-designated designs | Select 1N4735A when legacy BOMs or schematic symbols omit suffix; identical electrical behavior and form factor |
| BZX55C6V2 | 6.2 V ±5%, DO-35 package, 500 mW power rating - smaller footprint but lower power handling and higher ZZ (60 Ω) | Suitable for space-constrained PCBs where 0.5 W suffices; not recommended for >30 mA continuous operation | Choose BZX55C6V2 only if board area is critical and thermal budget allows 500 mW derating; verify ZZ impact on regulation stability |
Compared with 1N4735A_NT50A, the base 1N4735A offers identical performance with simplified part identification, while BZX55C6V2 trades power capacity and impedance for compactness - making the former ideal for direct replacement and the latter for miniaturized, lower-power designs.
Availability
1N4735A_NT50A is available at Aetrix Electronics and suitable for power supply regulation, overvoltage protection, and precision reference voltage generation requiring stable component supply and long-term lifecycle support.
Supply support for 1N4735A_NT50A 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensors, and discrete devices for automotive, industrial, and consumer applications.
The 1N47xxA series was developed as a standardized family of general-purpose Zener diodes for cost-effective, reliable voltage regulation and reference functions in high-volume industrial and power electronics designs.
FAQ
What is the Zener voltage tolerance of the 1N4735A_NT50A?
The 1N4735A_NT50A has a Zener voltage tolerance of ±5% at 25°C, meaning its actual breakdown voltage falls between 5.89 V and 6.51 V when tested at 37 mA. This tolerance is guaranteed per ON Semiconductor's 1N4728A–1N4758A datasheet Rev. 8, and applies directly to the 1N4735A_NT50A variant as part of the same qualified family.
Does the 1N4735A_NT50A require a heatsink in normal operation?
The 1N4735A_NT50A does not require a heatsink when operated within its absolute maximum ratings: 1.0 W power dissipation at lead temperature ≤ 50°C, with linear derating of 6.67 mW/°C above that. At ambient temperatures below 40°C and with standard 3/8" lead length, natural convection suffices - heatsinking becomes necessary only if sustained power exceeds 0.7 W at elevated ambient.
Can the 1N4735A_NT50A be used in place of the standard 1N4735A?
Yes, the 1N4735A_NT50A is electrically and mechanically identical to the 1N4735A - same DO-41 package, 6.2 V Zener voltage, 1.0 W rating, ±5% tolerance, and thermal specifications. The "_NT50A" suffix denotes a specific traceability or packaging variant but introduces no functional change; it is fully interchangeable with 1N4735A in all circuit implementations.
What is the maximum non-repetitive peak reverse current for the 1N4735A_NT50A?
The 1N4735A_NT50A supports a maximum non-repetitive peak reverse current (IZSM) of 730 mA, measured under 8.3 ms square-wave surge conditions per ON Semiconductor's datasheet. This rating enables transient overvoltage clamping in industrial control inputs and power rail protection without device failure.
How does the Zener impedance of the 1N4735A_NT50A affect regulation accuracy?
The 1N4735A_NT50A exhibits 41 Ω Zener impedance (ZZ) at 37 mA test current, meaning a 10 mA change in Zener current causes approximately 0.41 V shift in output voltage. This low ZZ ensures tight regulation in feedback loops and reference circuits where load-induced current variation must not degrade voltage stability beyond design margins.
1N4735A_NT50A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
1N4735A_NT50A FAQ
1.How can I place an order for 1N4735A_NT50A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4735A_NT50A 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 1N4735A_NT50A reliable?
The price and inventory of 1N4735A_NT50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4735A_NT50A is usually 5 days.
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1N4735A_NT50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4735A_NT50A 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 1N4735A_NT50A?
For technical support, including 1N4735A_NT50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4735A_NT50A requirements.
6.How does Aetrix verify that 1N4735A_NT50A is sourced from the original manufacturer or authorized distributors?
All 1N4735A_NT50A 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 1N4735A_NT50A meets industry standards.
7.What is the process for return or replacement of 1N4735A_NT50A?
All 1N4735A_NT50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N4735A_NT50A, 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 1N4735A_NT50A part is unused and in its original packaging.
Return procedure for 1N4735A_NT50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4735A_NT50A Tags
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