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onsemi 3EZ24D5G
- Part No.:
- 3EZ24D5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
3EZ24D5G.pdf
- Description:
- DIODE ZENER 24V 3W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,714
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Product details
Overview
3EZ24D5G from ON Semiconductor is a 3 W axial-lead Zener diode with nominal zener voltage of 24 V ±5%, maximum zener impedance of 31 Ω at 9 mA test current, and surge rating of 98 W for 1 ms. It operates from −65 °C to +200 °C and is used for voltage regulation and overvoltage protection in DC power supplies and reference circuits.
For engineers reviewing the 3EZ24D5G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, DO−41 package dimensions, leakage and impedance specs at IZT/IZK, and real-world selection guidance for discrete voltage reference design.
Technical Context
The 3EZ24D5G uses silicon-oxide passivated junction technology to achieve stable reverse breakdown with low dynamic impedance and high ESD robustness (Class 3, >16 kV HBM). Its thermal performance is defined by junction-to-lead resistance (θJL), with steady-state dissipation rated at 3 W up to 75 °C lead temperature and derated linearly above that.
It is specified for single-pulse non-repetitive surge handling per JEDEC standards (1/120 s sine-equivalent waveform), with peak surge power reaching 112 W at 1 ms pulse width. The cathode band polarity marking and DO−41 axial package support through-hole mounting in industrial power rails and analog reference nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.8–25.2 V @ IZT = 9 mA - defines regulated output range under nominal bias |
| Zener Impedance (ZZT) | 31 Ω max @ IZT = 9 mA - determines regulation accuracy under load transients |
| Max Steady Power (PD) | 3 W @ TL = 75 °C - sets thermal limit for continuous operation with 3/8″ lead length |
| Surge Power Rating | 98 W @ 1 ms pulse - supports transient overvoltage clamping without failure |
| Reverse Leakage (IR) | 0.25 μA max @ VR = 18.2 V - ensures minimal standby current in high-impedance reference paths |
| ESD Rating | Class 3 (>16 kV) HBM - provides robustness against handling and board-level electrostatic discharge |
| Operating Temp Range | −65 °C to +200 °C - enables use in automotive under-hood, industrial motor control, and aerospace environments |
Pinout & Package
Package: DO−41 (Case 59−10), axial-leaded plastic, void-free thermosetting material. Cathode indicated by color band; anode is unmarked lead. Mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common or lower potential side in shunt regulator configuration |
| Cathode | Zener breakdown terminal / Regulated output node | Connected to input rail; maintains stable voltage relative to anode during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener tolerance | Tight voltage binning enables predictable regulation without post-production trimming |
| Surmetic 30 junction passivation | Enhanced reliability and long-term stability under thermal cycling and humidity stress |
| Pb-free compatible packaging | Meets RoHS requirements without compromising thermal or electrical performance |
| DO−41 footprint compatibility | Same physical size as legacy 1 W Zeners-enables power upgrade without PCB redesign |
| High surge capability (98 W) | Clamps short-duration line transients (e.g., inductive kickback, EFT bursts) without degradation |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing +24 V rail in industrial PLC I/O modules where input varies ±15%. IC Role / Device Role / Timing Role: Shunt voltage reference and error-sensing element in feedback loop of linear regulator or op-amp comparator. Use Value: Maintains output within ±0.5 V across load steps due to 31 Ω ZZT and 3 W thermal headroom. |
Use Scenario: Clamping 24 V CAN bus lines against ESD and load-dump surges in automotive body controllers. IC Role / Device Role / Timing Role: Standby overvoltage clamp placed between CAN_H/CAN_L and ground. Use Value: Absorbs 98 W transients per JEDEC standard while limiting voltage to ≤25.2 V, protecting transceivers. |
| Reference Voltage Source | Temperature-Stable Bias Generator |
Use Scenario: Providing precision 24 V reference for ADC front-end in battery-powered test equipment. IC Role / Device Role / Timing Role: Low-drift voltage source feeding instrumentation amplifier gain-setting network. Use Value: Delivers <0.25 μA leakage at 18.2 V, minimizing current error in high-impedance divider networks. |
Use Scenario: Generating bias current for temperature-compensated current sources in analog sensor signal chains. IC Role / Device Role / Timing Role: Stable voltage node enabling predictable IREF derivation via series resistor. Use Value: Operates reliably from −65 °C to +200 °C, supporting extended-range industrial sensor calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5352B | 24 V ±5%, 5 W rating, DO−41, higher ZZT (35 Ω @ 10 mA) | Higher power margin but larger thermal footprint; requires greater lead spacing for heat dissipation | Select when >3 W continuous dissipation is required and board layout allows increased copper area |
| BZX85C24 | 24 V ±5%, 1.3 W rating, DO−41, lower surge rating (40 W @ 1 ms) | Lower cost and smaller thermal mass, but insufficient for repetitive surge events above 40 W | Select only for low-energy, non-critical reference roles where 3EZ24D5G's 98 W surge headroom is unnecessary |
Compared with 1N5352B and BZX85C24, the 3EZ24D5G delivers optimal balance of 3 W steady-state power, 98 W surge immunity, and tight 31 Ω impedance-making it preferred for industrial 24 V systems requiring both precision and ruggedness without oversizing.
Availability
3EZ24D5G is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive overvoltage protection, and precision analog reference design requiring stable component supply and full traceability.
Supply support for 3EZ24D5G 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 management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 3EZ24D5G belongs to the Surmetic 30 Zener series, engineered for high-reliability voltage regulation in harsh environments-emphasizing thermal stability, surge resilience, and long-term parametric consistency.
FAQ
What is the zener voltage tolerance of the 3EZ24D5G?
The 3EZ24D5G has a zener voltage tolerance of ±5%, with a nominal value of 24 V and guaranteed range of 22.8 V to 25.2 V at IZT = 9 mA. This tolerance is marked by the "D5" suffix per ON Semiconductor's type designation system and applies across the full operating temperature range.
How does the 3EZ24D5G handle surge conditions?
The 3EZ24D5G supports a non-repetitive peak surge power of 98 W for 1 ms pulses per JEDEC standards. Its surge capability is validated in Figure 3 of the official datasheet and exceeds typical 1 W Zener diodes-enabling reliable clamping of inductive spikes and EFT bursts in 24 V systems.
What is the maximum steady-state power dissipation for the 3EZ24D5G?
The 3EZ24D5G is rated for 3 W steady-state power dissipation at a lead temperature (TL) of 75 °C with 3/8″ lead length. Above 75 °C, it derates linearly at 24 mW/°C, reaching 1 W at 50 °C ambient-requiring appropriate heatsinking or airflow in high-temperature enclosures.
Is the 3EZ24D5G RoHS-compliant and Pb-free?
Yes, the 3EZ24D5G is available in Pb-free packaging compliant with RoHS Directive 2011/65/EU. ON Semiconductor confirms that all electrical and thermal specifications apply identically to both standard and Pb-free versions, with no performance trade-offs.
What package type and polarity marking does the 3EZ24D5G use?
The 3EZ24D5G uses the DO−41 (Case 59−10) axial-leaded plastic package. Polarity is marked by a cathode band on the body; the banded end is the cathode, and the unmarked lead is the anode-critical for correct orientation in shunt regulator configurations.
3EZ24D5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 9 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 18.2 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
3EZ24D5G FAQ
1.How can I place an order for 3EZ24D5G through Aetrix?
Please submit a Request for Quotation (RFQ) for 3EZ24D5G 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 3EZ24D5G reliable?
The price and inventory of 3EZ24D5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3EZ24D5G is usually 5 days.
3.What payment methods are accepted for 3EZ24D5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3EZ24D5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3EZ24D5G?
3EZ24D5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3EZ24D5G 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 3EZ24D5G?
For technical support, including 3EZ24D5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3EZ24D5G requirements.
6.How does Aetrix verify that 3EZ24D5G is sourced from the original manufacturer or authorized distributors?
All 3EZ24D5G 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 3EZ24D5G meets industry standards.
7.What is the process for return or replacement of 3EZ24D5G?
All 3EZ24D5G units undergo pre-shipment inspection (PSI). If there is an issue with 3EZ24D5G, 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 3EZ24D5G part is unused and in its original packaging.
Return procedure for 3EZ24D5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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