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onsemi 1N5225BRL
- Part No.:
- 1N5225BRL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N5225BRL.pdf
- Description:
- DIODE ZENER 3V SILICON UNIDIREC
- Quantity:
- Payment:
- Shipping:
Inventory:65,000
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Product details
Overview
1N5225BRL from ON Semiconductor is a 500 mW, 3.0 V ±5% axial-lead hermetically sealed glass Zener diode in DO-35 (CASE 299) package, rated for –65°C to +200°C operation, with 29 Ω maximum zener impedance at 20 mA and –0.075 %/°C temperature coefficient - used for precision low-power voltage regulation in sensor biasing, reference supplies, and overvoltage protection circuits.
For engineers reviewing the 1N5225BRL datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.0 V nominal zener voltage, 50 µA max leakage at 2.4 V, 20 mA test current, DO-35 mechanical robustness, and Class 3 ESD rating (>16 kV HBM).
Technical Context
This Zener diode employs silicon-oxide passivated junction technology for stable breakdown characteristics and low noise. Its double-slug, metallurgically bonded glass construction ensures hermetic sealing and thermal reliability across industrial and automotive ambient conditions.
It operates with a defined 20 mA zener test current (IZT), exhibits 29 Ω dynamic impedance (ZZT) at IZT, and maintains regulation within ±5% tolerance under steady-state power dissipation up to 500 mW at lead temperature ≤75°C - derating linearly above that threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.0 V - precise DC reference point for low-voltage analog circuitry and sensor excitation |
| Zener Tolerance | ±5% - ensures predictable regulation window of 2.85 V to 3.15 V at 20 mA |
| Zener Impedance (ZZT) | 29 Ω max @ 20 mA - limits output voltage deviation under load current variation |
| Max Leakage Current | 50 µA @ 2.4 V - guarantees minimal parasitic current draw in standby or high-impedance nodes |
| Power Dissipation | 500 mW @ TL ≤ 75°C - supports continuous regulation in compact, unheatsinked PCB layouts |
| Temperature Coefficient | –0.075 %/°C - enables predictable drift compensation in temperature-stable references |
| ESD Rating | Class 3 (>16 kV HBM) - withstands handling and board-level electrostatic discharge without parameter shift |
Pinout & Package
Package: DO-35 (CASE 299), axial-lead, hermetically sealed glass with cathode indicated by polarity band. Leads are corrosion-resistant and readily solderable at 230°C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during reverse-bias regulation |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 3.0 V output when reverse-biased above breakdown; marked with polarity band |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass Encapsulation | Prevents moisture ingress and parameter drift in humid or corrosive environments |
| Silicon-Oxide Passivated Junction | Delivers low noise and long-term stability in precision reference applications |
| Double-Slug Construction | Enhances thermal transfer from junction to leads, supporting reliable 500 mW operation |
| Class 3 ESD Robustness | Eliminates need for external ESD protection in handheld or field-deployed electronics |
| JEDEC-Compliant DO-35 Footprint | Ensures compatibility with standard axial-lead automated assembly and rework tooling |
Applications
| Industrial Sensor Biasing | Low-Power Reference Supply |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) and bridge-based pressure sensors in PLC modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed 3.0 V reference independent of supply rail fluctuations. Use Value: Maintains sensor linearity and measurement repeatability across –40°C to +85°C ambient with <±10 mV total drift. |
Use Scenario: Generating local 3.0 V reference for ADCs, comparators, and microcontroller reset circuits in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Passive voltage regulator establishing accurate analog reference without active circuitry or quiescent current overhead. Use Value: Enables sub-1 µA system sleep current while preserving 3.0 V reference integrity for wake-up event detection. |
| Overvoltage Clamp Protection | Signal-Level Translation |
Use Scenario: Clamping transient spikes on 3.3 V logic lines exposed to ESD or inductive kickback in motor control interfaces. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting surge current above 3.15 V to ground before downstream IC damage occurs. Use Value: Limits peak clamped voltage to ≤3.3 V with <10 ns response, meeting IEC 61000-4-2 Level 4 immunity requirements. |
Use Scenario: Shifting logic levels between 5 V microcontrollers and 3.0 V analog front-end components using passive level translation. IC Role / Device Role / Timing Role: Zener-based clamp defining upper rail of bidirectional signal path to prevent 5 V overdrive of 3.0 V inputs. Use Value: Provides deterministic 3.0 V ceiling with <100 mV hysteresis, eliminating need for active translators or series resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5225BTA | Same electrical specs; packaged in 5000-unit ammo pack instead of tape-and-reel | No functional difference - suited for manual or semi-automated assembly where reel format is unnecessary | Select 1N5225BTA for prototyping or low-volume hand-soldered builds |
| BZX55-C3V0 | 3.0 V ±5%, 500 mW, DO-35, but higher ZZT (≤35 Ω) and no specified ESD rating | Lacks documented Class 3 HBM rating; less suitable for ESD-prone end equipment | Choose BZX55-C3V0 only when cost sensitivity outweighs ESD assurance and tighter impedance control |
Compared with 1N5225BRL, 1N5225BTA offers identical regulation performance in a different packaging format, while BZX55-C3V0 trades verified ESD robustness and lower zener impedance for broader distributor availability - making 1N5225BRL optimal for production-grade industrial designs requiring guaranteed reliability.
Availability
1N5225BRL is available at Aetrix Electronics and suitable for industrial sensor biasing, low-power reference supplies, and overvoltage clamp protection requiring stable component supply, JEDEC-compliant DO-35 footprint, and Class 3 ESD resilience.
Supply support for 1N5225BRL 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 energy-efficient power management, analog, and sensor solutions for automotive, industrial, and cloud infrastructure markets.
The 1N52xxB series belongs to ON Semiconductor's legacy Zener diode product line, designed specifically for general-purpose, low-power voltage regulation and reference applications where hermetic reliability and JEDEC-standard packaging are essential.
FAQ
What is the nominal zener voltage and tolerance of the 1N5225BRL?
The 1N5225BRL has a nominal zener voltage of 3.0 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 2.85 V and 3.15 V when tested at 20 mA (IZT) and 25°C ambient. This tight tolerance supports accurate voltage referencing in analog signal chains and sensor interfaces where precision matters.
Does the 1N5225BRL have an ESD rating, and if so, what is it?
Yes, the 1N5225BRL is rated Class 3 per the Human Body Model (HBM) with >16 kV ESD withstand capability. This specification is confirmed in the ON Semiconductor datasheet and reflects the device's ability to survive common handling and board-level electrostatic events without parameter shift or failure - critical for field-deployable electronics.
What is the maximum power dissipation and thermal derating behavior of the 1N5225BRL?
The 1N5225BRL is rated for 500 mW steady-state power dissipation at lead temperature (TL) ≤75°C, with linear derating of 4.0 mW/°C above that threshold. This means at TL = 100°C, maximum allowable power drops to 400 mW. Derating is based on 3/8″ lead length and assumes typical PCB thermal paths.
How is polarity identified on the 1N5225BRL package?
Polarity on the 1N5225BRL is indicated by a visible cathode band on the glass body - the lead adjacent to this band is the cathode, and the opposite lead is the anode. During reverse-bias operation (zener mode), the cathode connects to the higher-potential node, and the anode connects to ground or the lower-potential reference point.
What is the zener impedance of the 1N5225BRL, and why does it matter?
The 1N5225BRL has a maximum zener impedance (ZZT) of 29 Ω measured at 20 mA (IZT) and 60 Hz AC. Low ZZT ensures minimal output voltage variation under changing load current - for example, a 1 mA load shift causes only ~29 mV change in regulated voltage, preserving accuracy in sensitive analog circuits.
1N5225BRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
1N5225BRL FAQ
1.How can I place an order for 1N5225BRL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5225BRL 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 1N5225BRL reliable?
The price and inventory of 1N5225BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5225BRL is usually 5 days.
3.What payment methods are accepted for 1N5225BRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5225BRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5225BRL?
1N5225BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5225BRL 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 1N5225BRL?
For technical support, including 1N5225BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5225BRL requirements.
6.How does Aetrix verify that 1N5225BRL is sourced from the original manufacturer or authorized distributors?
All 1N5225BRL 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 1N5225BRL meets industry standards.
7.What is the process for return or replacement of 1N5225BRL?
All 1N5225BRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5225BRL, 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 1N5225BRL part is unused and in its original packaging.
Return procedure for 1N5225BRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5225BRL Tags
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