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onsemi 3EZ10D5G
- Part No.:
- 3EZ10D5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
3EZ10D5G.pdf
- Description:
- DIODE ZENER 10V 3W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,061
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Product details
Overview
3EZ10D5G from ON Semiconductor is a 3 W, 10 V ±5% Zener voltage regulator diode in DO-41 axial package, with 75 Ω maximum zener impedance at 3.5 mA test current, 270 μA reverse leakage at 7.6 V, and 98 W surge rating for 1 ms. It serves as a precision voltage reference or overvoltage clamp in DC power supply regulation circuits.
For engineers reviewing the 3EZ10D5G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, surge capability, ESD robustness (Class 3, >16 kV HBM), and real-world design implications for stable voltage reference implementation.
Technical Context
The 3EZ10D5G operates as a silicon-oxide passivated junction Zener diode optimized for steady-state voltage regulation and transient clamping. Its 10 V nominal zener voltage is specified at IZT = 3.5 mA with ±5% tolerance, and it maintains low dynamic impedance (75 Ω max) to ensure tight regulation under load variation.
Thermal performance is defined by lead-length-dependent derating: full 3 W dissipation at TL = 75°C (lead length = 3/8″), linearly derated to 1 W at TA = 50°C. Surge capability is rated at 98 W for 1 ms non-repetitive pulses per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.50–10.5 V @ IZT = 3.5 mA; ensures stable 10 V reference within ±5% across production units |
| Zener Impedance (ZZT) | 75 Ω max @ IZT; limits output voltage deviation under changing load current |
| Max Steady Power (PD) | 3 W @ TL = 75°C; requires heatsinking or short leads for full-power operation |
| Surge Rating | 98 W @ 1 ms pulse; protects downstream circuitry from transient overvoltage events |
| ESD Rating | Class 3 (>16 kV HBM); withstands handling and board-level electrostatic discharge without degradation |
| Reverse Leakage (IR) | 270 μA max @ VR = 7.6 V; defines minimum bias current needed to maintain regulation |
| Operating Temp Range | −65°C to +200°C; supports industrial and automotive under-hood environments |
Pinout & Package
DO-41 axial-leaded plastic package (Case 59-10), cathode indicated by polarity band. Leads are solderable, corrosion-resistant, with max solder temperature of 230°C at 1/16″ from case for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias regulation; forms reference ground return path |
| Cathode | Zener breakdown terminal / regulated output node | Connected to higher-potential rail; provides stable 10 V reference when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables stable long-term voltage regulation and low parameter drift over time and temperature |
| Surmetic 30 construction | Delivers superior surge immunity and environmental ruggedness vs. standard plastic Zeners |
| Pb-free compatible packaging | Meets RoHS requirements without compromising thermal or electrical performance |
| Compact DO-41 footprint | Same physical size as conventional 1 W Zeners while delivering 3× power handling |
Applications
| DC Power Supply Regulation | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing unregulated 12 V DC input to provide clean 10 V reference for analog sensor biasing in industrial PLC modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp and regulate output voltage. Use Value: Maintains ±5% output accuracy across temperature and load, enabling reliable ADC reference without active regulation. | Use Scenario: Protecting microcontroller I/O pins from 24 V transients induced by relay coil flyback in factory automation controllers. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping surge energy before it reaches sensitive logic inputs. Use Value: Absorbs 98 W for 1 ms without failure, limiting pin voltage to ≤10.5 V and preventing latch-up or gate oxide damage. |
| Temperature-Stable Reference Source | Low-Cost Voltage Threshold Detector |
Use Scenario: Providing fixed 10 V reference for comparator-based battery charge termination in portable medical devices. IC Role / Device Role / Timing Role: Precision voltage reference element defining trip point for charging control logic. Use Value: Low 75 Ω impedance minimizes voltage shift under varying comparator input bias currents, improving detection repeatability. | Use Scenario: Detecting brown-out condition in embedded power management where system resets if supply drops below 10 V. IC Role / Device Role / Timing Role: Zener-based threshold element feeding comparator input to trigger reset signal. Use Value: Tight ±5% tolerance ensures consistent reset threshold across manufacturing lots and operating temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A | 1 W rating, 10 V ±5%, 17 Ω ZZT @ 25 mA; smaller power handling and lower surge capacity | Suitable only for low-power reference or signal-level clamping; not recommended for 3 W continuous or high-energy transients | Select 1N4740A only when board space or cost constraints preclude DO-41 3 W devices and thermal margin is sufficient |
| BZX55C10 | 500 mW rating, 10 V ±5%, 20 Ω ZZT @ 5 mA; smaller package (DO-35), lower surge rating (40 W) | Applicable in consumer electronics where space is critical and transient energy is limited | Choose BZX55C10 for compact PCB layouts with <1 W average dissipation and no high-energy surges |
Compared with 1N4740A and BZX55C10, the 3EZ10D5G delivers triple the steady-state power, double the surge energy absorption, and superior thermal stability-making it the preferred choice for industrial power rails, automotive subsystems, and any application requiring sustained 10 V regulation under variable load or harsh transients.
Availability
3EZ10D5G is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection clamping, and temperature-stable reference source applications requiring stable component supply and long-term reliability.
Supply support for 3EZ10D5G 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 supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and IoT applications.
The 3EZ10D5G belongs to the Surmetic 30 Zener series, engineered for high-reliability voltage regulation and transient suppression in demanding power management systems where robustness and long-term stability are critical.
FAQ
What is the exact zener voltage tolerance and test condition for 3EZ10D5G?
The 3EZ10D5G has a nominal zener voltage of 10 V with ±5% tolerance, guaranteed at IZT = 3.5 mA, TA = 25°C, and 40 ms ±10 ms measurement duration at 3/8″ lead length. The min/max values are 9.50 V and 10.5 V respectively, confirmed in the official ON Semiconductor datasheet revision 4.
Can 3EZ10D5G be used in surface-mount designs?
No - the 3EZ10D5G is exclusively available in axial-leaded DO-41 (Case 59-10) packaging and is not offered in SMD variants. For surface-mount equivalents, consider ON Semiconductor's NZ9F10V or similar SOD-123 packaged Zeners, but note differences in power rating and thermal path.
What is the maximum allowable reverse leakage current for 3EZ10D5G and at what voltage is it measured?
The maximum reverse leakage current for 3EZ10D5G is 270 μA, measured at VR = 7.6 V (80% of nominal VZ). This value is specified in the Electrical Characteristics table and reflects worst-case off-state conduction before breakdown onset.
How does thermal derating work for 3EZ10D5G in real-world PCB mounting?
3EZ10D5G derates linearly from 3 W at TL = 75°C (lead temp) to 0 W at ~188°C. With typical PCB trace mounting (L ≈ 3/8″), LA ≈ 30–40°C/W applies; thus at TA = 50°C, max dissipation drops to 1 W. Accurate lead temperature measurement via thermocouple is recommended for high-reliability designs.
Is 3EZ10D5G RoHS-compliant and halogen-free?
Yes - the 3EZ10D5G is available in Pb-free packaging compliant with RoHS Directive 2011/65/EU. ON Semiconductor confirms that both standard and Pb-free versions meet the same electrical and mechanical specifications, and halogen content is below IEC 61249-2-21 limits per manufacturer documentation.
3EZ10D5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 7.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
3EZ10D5G FAQ
1.How can I place an order for 3EZ10D5G through Aetrix?
Please submit a Request for Quotation (RFQ) for 3EZ10D5G 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 3EZ10D5G reliable?
The price and inventory of 3EZ10D5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3EZ10D5G is usually 5 days.
3.What payment methods are accepted for 3EZ10D5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3EZ10D5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3EZ10D5G?
3EZ10D5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3EZ10D5G 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 3EZ10D5G?
For technical support, including 3EZ10D5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3EZ10D5G requirements.
6.How does Aetrix verify that 3EZ10D5G is sourced from the original manufacturer or authorized distributors?
All 3EZ10D5G 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 3EZ10D5G meets industry standards.
7.What is the process for return or replacement of 3EZ10D5G?
All 3EZ10D5G units undergo pre-shipment inspection (PSI). If there is an issue with 3EZ10D5G, 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 3EZ10D5G part is unused and in its original packaging.
Return procedure for 3EZ10D5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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