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onsemi 1N4730ATR_S00Z
- Part No.:
- 1N4730ATR_S00Z
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4730ATR_S00Z.pdf
- Description:
- DIODE ZENER 3.9V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:8,142
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Product details
Overview
1N4730ATR_S00Z from ON Semiconductor is a 3.9 V ±5% Zener diode in DO-41 glass package, rated for 1.0 W power dissipation at TL ≤ 50°C with 6.67 mW/°C derating, designed for precision voltage regulation and reference applications in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N4730ATR_S00Z datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (3.9 V), test current (9 mA), dynamic impedance (64 Ω @ IZ), leakage current (1 μA @ VR = 1 V), and thermal operating range (–65°C to +200°C).
Technical Context
This device operates as a silicon planar Zener diode with sharp reverse breakdown characteristics, optimized for stable DC voltage reference under regulated current conditions. Its 3.9 V nominal Zener voltage is specified at 9 mA test current, with typical dynamic impedance of 64 Ω and knee impedance of 400 Ω at 1 mA.
The diode exhibits low leakage (≤1 μA at 1 V reverse bias) and supports non-repetitive peak reverse surge current up to 1190 mA (8.3 ms square wave). It is qualified for operation across –65°C to +200°C junction and storage temperature range, with cathode indicated by a single color band on the DO-41 glass case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.9 V nominal, ±5% tolerance - defines precise clamping/reference level in regulator or protection circuit |
| Test Current (IZ) | 9 mA - standard bias point where VZ and ZZ are guaranteed per spec |
| Zener Impedance (ZZ) | 64 Ω max @ IZ - determines output voltage stability under load variation |
| Power Dissipation (PD) | 1.0 W @ TL ≤ 50°C - sets maximum continuous power handling in lead-mounted configuration |
| Leakage Current (IR) | 1 μA max @ VR = 1 V - ensures minimal parasitic current in high-impedance bias networks |
| Operating Temp Range | –65°C to +200°C - enables use in automotive under-hood, industrial, and aerospace environments |
Pinout & Package
DO-41 glass axial package with cathode identified by a single color band. Leads are tinned copper-clad steel; case diameter 2.0–2.7 mm, length 4.5–5.5 mm, lead diameter 0.4–0.6 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to ground or lower potential node in shunt regulator topology |
| Cathode | Zener breakdown terminal / high-side connection | Connected to input or regulated rail; color band marks this terminal for polarity verification |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables predictable clamping without post-assembly trimming in cost-sensitive designs |
| 1.0 W power rating at 50°C lead temperature | Supports robust transient energy absorption in 5–12 V supply rails without external heatsinking |
| Low 1 μA leakage at 1 V reverse bias | Minimizes quiescent current error in precision reference dividers and battery-monitoring circuits |
| DO-41 glass package with axial leads | Provides industry-standard through-hole mounting, thermal reliability, and compatibility with legacy PCB footprints |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Provides stable 3.9 V reference for TL431-like comparator input or direct shunt regulation. Use Value: Maintains ±1% output regulation accuracy across line/load/temperature when paired with precision resistive divider. |
Use Scenario: Protecting microcontroller I/O pins or ADC inputs from ESD or supply transients exceeding 5 V. IC Role / Device Role / Timing Role: Shunt clamp that activates above 3.9 V to divert excess current away from sensitive nodes. Use Value: Limits voltage excursion to ≤4.1 V (max VZ) during 100 ns–1 μs surges, preventing latch-up or oxide damage. |
| Programmable Voltage Reference | Current Source Bias Network |
Use Scenario: Generating stable bias voltages for op-amp comparators, sensor excitation, or DAC reference buffers. IC Role / Device Role / Timing Role: Serves as primary voltage reference in two-resistor current source or series-shunt hybrid topologies. Use Value: Delivers <10 ppm/°C effective tempco when operated at constant IZ, enabling sub-0.5% drift over –40°C to +85°C. |
Use Scenario: Setting bias current for discrete transistor amplifiers or LED drivers requiring stable quiescent point. IC Role / Device Role / Timing Role: Establishes fixed voltage drop across emitter/base resistors to define collector current. Use Value: Reduces current variation to <±3% over temperature vs. resistor-only bias, improving gain stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4730A | Same electrical specs; DO-41 package but no "TR_S00Z" tape-and-reel suffix or date-code marking format | No distinction in circuit function; differs only in packaging and traceability markings | Select 1N4730ATR_S00Z for automated SMT placement compatibility and lot-traceable procurement |
| BZX55-C3V9 | 3.9 V ±5%, 500 mW rating, DO-35 package - lower power, smaller footprint, higher thermal resistance | Suitable for low-power signal-level references but not for >500 mW dissipation scenarios | Choose BZX55-C3V9 only when board space is constrained and power demand remains below 400 mW |
Compared with 1N4730A and BZX55-C3V9, the 1N4730ATR_S00Z offers full 1.0 W capability in DO-41 with standardized tape-and-reel delivery, making it optimal for production-scale power regulation where thermal margin and assembly automation are critical.
Availability
1N4730ATR_S00Z is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable voltage reference designs requiring stable component supply with full traceability and consistent DO-41 mechanical form factor.
Supply support for 1N4730ATR_S00Z 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 (now onsemi) is a global semiconductor supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N4730ATR_S00Z belongs to the legacy 1N47xxA Zener diode family, engineered for high-reliability voltage reference and regulation in cost-sensitive, high-volume power conversion and protection applications.
FAQ
What is the Zener voltage tolerance for 1N4730ATR_S00Z?
The 1N4730ATR_S00Z has a nominal Zener voltage of 3.9 V with a tolerance of ±5%, meaning the actual measured VZ falls between 3.705 V and 4.095 V at 9 mA test current and 25°C ambient. This tolerance is guaranteed per the ON Semiconductor 1N4728A–1N4758A datasheet Rev. 8, and applies to every unit shipped under this part number.
Can 1N4730ATR_S00Z be used in surface-mount designs?
No - the 1N4730ATR_S00Z uses a DO-41 glass axial package with radial leads intended for through-hole mounting. While it can be manually placed on SMT boards with adapter fixtures, it lacks solder pads or gull-wing leads required for reflow assembly. For SMT-compatible alternatives, consider the MMBZ4687 or BZX84-C3V9 series.
What is the maximum non-repetitive peak reverse current for 1N4730ATR_S00Z?
The 1N4730ATR_S00Z supports a non-repetitive peak reverse current (IZSM) of 1190 mA under an 8.3 ms square-wave surge condition, as specified in the ON Semiconductor datasheet. This value reflects short-duration transient energy handling capability, not continuous operation.
How does derating work for 1N4730ATR_S00Z above 50°C?
For 1N4730ATR_S00Z, power dissipation must be linearly derated at 6.67 mW/°C above a lead temperature of 50°C. At 75°C lead temperature, the allowable PD drops to 1.0 W − (25°C × 6.67 mW/°C) = 833 mW. Derating is based on measured lead temperature, not ambient or case temperature.
Is 1N4730ATR_S00Z RoHS compliant and halogen-free?
Yes - the 1N4730ATR_S00Z is manufactured by onsemi to meet RoHS Directive 2011/65/EU and is halogen-free per J-STD-709 definition. Compliance is documented in onsemi's material declarations and PB-free product listings, with lead finish specified as 100% matte tin.
1N4730ATR_S00Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 9 Ohms
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
1N4730ATR_S00Z FAQ
1.How can I place an order for 1N4730ATR_S00Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4730ATR_S00Z 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 1N4730ATR_S00Z reliable?
The price and inventory of 1N4730ATR_S00Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4730ATR_S00Z is usually 5 days.
3.What payment methods are accepted for 1N4730ATR_S00Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4730ATR_S00Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4730ATR_S00Z?
1N4730ATR_S00Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4730ATR_S00Z 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 1N4730ATR_S00Z?
For technical support, including 1N4730ATR_S00Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4730ATR_S00Z requirements.
6.How does Aetrix verify that 1N4730ATR_S00Z is sourced from the original manufacturer or authorized distributors?
All 1N4730ATR_S00Z 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 1N4730ATR_S00Z meets industry standards.
7.What is the process for return or replacement of 1N4730ATR_S00Z?
All 1N4730ATR_S00Z units undergo pre-shipment inspection (PSI). If there is an issue with 1N4730ATR_S00Z, 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 1N4730ATR_S00Z part is unused and in its original packaging.
Return procedure for 1N4730ATR_S00Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4730ATR_S00Z Tags
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