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onsemi 1N5228BRL
- Part No.:
- 1N5228BRL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5228BRL.pdf
- Description:
- DIODE ZENER 3.9V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:275,000
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Product details
Overview
1N5228BRL from ON Semiconductor is a 500 mW, 3.9 V ±5% Zener voltage regulator diode in a DO-35 (Case 299) hermetically sealed glass axial package, with 23 Ω maximum zener impedance at 20 mA test current, –0.06 %/°C temperature coefficient, and 10 µA maximum reverse leakage at 3.12 V, used for precision low-power voltage reference and overvoltage protection in analog sensor signal conditioning circuits.
For engineers reviewing the 1N5228BRL datasheet, pinout, applications, or equivalent options, key selection criteria include its tight ±5% tolerance, low 23 Ω dynamic impedance, stable negative temperature coefficient, DO-35 mechanical robustness, and suitability for space-constrained linear regulator feedback paths and calibration references.
Technical Context
This device operates as a silicon-oxide passivated junction Zener diode optimized for stable DC voltage regulation at low currents. Its double-slug, metallurgically bonded glass construction ensures hermetic sealing and thermal stability across –65°C to +200°C operating range.
The 1N5228BRL delivers specified zener voltage (3.71–4.09 V) under 20 mA test current (IZT), with 1900 Ω maximum impedance at knee current (IZK = 0.25 mA) and 10 µA leakage at 80% of nominal breakdown voltage - enabling predictable clamping in low-power bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.71–4.09 V @ IZT = 20 mA - defines precise clamping threshold for reference and protection circuits |
| Power Dissipation | 500 mW @ TL ≤ 75°C - supports continuous operation in ambient temperatures up to 75°C with 3/8″ lead length |
| Zener Impedance | 23 Ω max @ IZT = 20 mA - ensures minimal voltage deviation under load current variation |
| Temperature Coefficient | –0.06 %/°C - provides predictable, monotonic voltage drift for temperature-compensated designs |
| Reverse Leakage | 10 µA max @ VR = 3.12 V - guarantees low standby power loss in high-impedance bias networks |
| Tolerance | ±5% - meets JEDEC standard for production-grade voltage reference accuracy without binning |
| Package | DO-35 (Case 299), axial-leaded glass - enables manual or automated through-hole assembly with hermetic environmental protection |
Pinout & Package
DO-35 (Case 299) hermetically sealed glass axial package with cathode indicated by a single polarity band on the glass body; anode and cathode leads are tinned and solderable per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to circuit ground or lower potential node in reverse-biased Zener configuration |
| Cathode | Zener breakdown terminal / high-side connection | Connected to regulated voltage node; polarity band identifies this terminal for correct orientation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass Sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| ESD Rating | Class 3 (>16 kV HBM) - withstands handling and board-level ESD events without degradation |
| Double-Slug Construction | Improves thermal dissipation from junction to leads, supporting stable operation at rated power |
| Silicon-Oxide Passivation | Reduces surface leakage and enhances long-term reliability of the Zener junction |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reference |
|---|---|
Use Scenario: Providing stable 3.9 V reference for bridge sensor amplifiers in pressure transducers operating from 5 V rails. IC Role / Device Role / Timing Role: Zener voltage reference establishing precision gain-setting node for instrumentation amplifier feedback. Use Value: ±5% initial tolerance and –0.06 %/°C TC enable <±2% total error over –40°C to +85°C without trimming. |
Use Scenario: Biasing ADC reference input or powering low-current RTC backup circuits in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Low-quiescent-current voltage clamp supplying regulated 3.9 V to analog subsystems during brown-out conditions. Use Value: 10 µA leakage at 3.12 V minimizes battery drain while maintaining accurate regulation at 1–5 mA load. |
| Linear Regulator Feedback | Overvoltage Protection Clamp |
Use Scenario: Setting output voltage of discrete NPN-based linear regulators in legacy industrial power supplies. IC Role / Device Role / Timing Role: Precision voltage reference in emitter-follower feedback loop controlling pass transistor base drive. Use Value: 23 Ω dynamic impedance ensures <50 mV output variation across 1–20 mA load changes, improving line regulation. |
Use Scenario: Protecting 3.3 V logic inputs from transient surges in automotive body control modules. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting voltage to 4.09 V maximum during ESD or load-dump events. Use Value: Hermetic DO-35 package withstands repeated 100 W/10 ms surges per Figure 7a, extending system-level surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5228BTA | Same electrical specs; packaged in 5000-unit ammo pack instead of tape-and-reel | No functional difference; suited for manual prototyping or low-volume hand-soldered builds | Select 1N5228BTA when reel feeding is unavailable or small-batch assembly is required |
| BZX55-C3V9 | ±5% tolerance, 3.9 V nominal, but higher 60 Ω Zener impedance and +0.06 %/°C TC | Less stable regulation under varying load/temperature; not suitable for precision references | Choose BZX55-C3V9 only for cost-sensitive non-critical clamping where tighter TC and lower ZZ are unnecessary |
Compared with 1N5228BRL, 1N5228BTA offers identical performance in a different packaging format ideal for bench use, while BZX55-C3V9 trades regulation precision and thermal stability for lower unit cost in non-critical applications.
Availability
1N5228BRL is available at Aetrix Electronics and suitable for industrial sensor interfaces, low-power microcontroller reference circuits, and linear regulator feedback networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5228BRL 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 was designed as a high-reliability, hermetically sealed Zener regulator family for precision voltage reference and protection in harsh-environment applications demanding long-term parametric stability.
FAQ
What is the nominal Zener voltage and tolerance of the 1N5228BRL?
The 1N5228BRL has a nominal Zener voltage of 3.9 V with a guaranteed tolerance of ±5%, meaning its actual breakdown voltage falls between 3.71 V and 4.09 V when tested at 20 mA (IZT) and 25°C ambient. This JEDEC-standard tolerance ensures consistent performance across production lots without requiring post-manufacture sorting.
What is the maximum power dissipation rating for the 1N5228BRL and how does it derate with temperature?
The 1N5228BRL is rated for 500 mW steady-state power dissipation at lead temperature (TL) ≤ 75°C with 3/8″ lead length. Above 75°C, it derates linearly at 4.0 mW/°C - for example, at TL = 100°C, maximum allowable power drops to 400 mW. Derating ensures junction temperature remains within the –65°C to +200°C safe operating range.
How does the temperature coefficient of the 1N5228BRL affect its voltage stability over temperature?
The 1N5228BRL has a temperature coefficient of –0.06 %/°C, meaning its Zener voltage decreases by approximately 2.34 mV per °C rise above 25°C. This predictable negative drift allows designers to compensate for thermal effects in precision references - for instance, pairing it with a positive-TC component to achieve near-zero net drift over –40°C to +85°C.
What is the Zener impedance of the 1N5228BRL and why does it matter in regulation circuits?
The 1N5228BRL exhibits a maximum Zener impedance (ZZT) of 23 Ω at 20 mA test current. Low impedance ensures minimal change in output voltage under varying load current - for example, a 5 mA load shift causes only ~115 mV deviation. This directly improves regulation accuracy in feedback and reference applications where load stability is critical.
Is the 1N5228BRL suitable for surge protection, and what are its pulse handling limits?
Yes, the 1N5228BRL supports non-repetitive surge pulses per Figure 7a: up to 100 W for 1 ms at 25°C junction temperature. Its hermetic DO-35 package and double-slug construction enable reliable transient clamping in automotive and industrial environments. However, repetitive surges require thermal analysis using θJL ≈ 30°C/W to avoid cumulative junction overheating.
1N5228BRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 23 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO–204AH
1N5228BRL FAQ
1.How can I place an order for 1N5228BRL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5228BRL 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 1N5228BRL reliable?
The price and inventory of 1N5228BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5228BRL is usually 5 days.
3.What payment methods are accepted for 1N5228BRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5228BRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5228BRL?
1N5228BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5228BRL 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 1N5228BRL?
For technical support, including 1N5228BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5228BRL requirements.
6.How does Aetrix verify that 1N5228BRL is sourced from the original manufacturer or authorized distributors?
All 1N5228BRL 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 1N5228BRL meets industry standards.
7.What is the process for return or replacement of 1N5228BRL?
All 1N5228BRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5228BRL, 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 1N5228BRL part is unused and in its original packaging.
Return procedure for 1N5228BRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5228BRL Tags
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