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Microchip Technology 1N5228BE3/TR
- Part No.:
- 1N5228BE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5228BE3/TR.pdf
- Description:
- DIODE ZENER 3.9V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,148
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Product details
Overview
1N5228BE3/TR from Microsemi is a 3.9 V, ±5% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current and 23 Ω dynamic impedance at IZT, operating across –65°C to +175°C. It serves as a precision voltage reference or shunt regulator in low-power analog circuits, power supply feedback paths, and overvoltage protection.
For engineers reviewing the 1N5228BE3/TR datasheet, 1N5228BE3/TR pinout, 1N5228BE3/TR application, or 1N5228BE3/TR equivalent, key selection criteria include its 3.9 V nominal Zener voltage with tight 5% tolerance, low 23 Ω Zener impedance at 20 mA, RoHS-compliant matte-tin plating, and tape-and-reel packaging for automated assembly.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable voltage regulation across a broad current range (0.25 mA to 20 mA), with minimal temperature coefficient of –0.060 %/°C. Its glass DO-35 package provides hermetic sealing and inherent radiation hardness per MicroNote 050.
Designed for low-noise, low-capacitance applications, the 1N5228BE3/TR exhibits typical junction capacitance below 5 pF and forward voltage ≤1.5 V at 200 mA - enabling use in signal conditioning and precision biasing where parasitic effects must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 3.9 V at 20 mA test current - defines regulated output voltage under standard bias conditions |
| Zener Tolerance | ±5% (B suffix) - ensures voltage accuracy within ±0.195 V for reliable reference design |
| Power Dissipation | 500 mW at 25°C - supports continuous operation in compact PCB layouts with adequate lead length |
| Zener Impedance (ZZT) | 23 Ω at IZT = 20 mA - indicates low AC resistance for stable regulation under varying load |
| Operating Temperature | –65°C to +175°C - enables deployment in automotive engine compartments and industrial control enclosures |
| Thermal Resistance | 250 °C/W junction-to-lead (3/8″ lead length) - informs thermal layout requirements for reliability |
| Reverse Current (IR) | 10 μA max at 2.9 V - confirms low leakage for battery-powered or high-impedance sensing nodes |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package with cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node when used in shunt regulation |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to input voltage source and load to clamp voltage at 3.9 V |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered DO-35 construction | Ensures mechanical and electrical interchangeability with legacy 1N52xx designs across OEMs |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU without lead exemption - suitable for green manufacturing |
| Tape-and-reel "TR" packaging | Enables automated pick-and-place assembly with EIA-296 standard carrier tape |
| –65°C to +175°C operating range | Supports extended-temperature applications without derating in harsh environments |
| Inherent radiation hardness | Validated per MicroNote 050 - appropriate for aerospace and defense systems with TID exposure |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 3.9 V bias for analog front-end op-amps in exhaust gas oxygen sensors. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining excitation voltage despite battery fluctuations. Use Value: Ensures <±0.2 V drift over –40°C to +125°C ambient, preserving sensor linearity and calibration integrity. |
Use Scenario: Regulating supply to 16-bit ADC reference inputs in programmable logic controller (PLC) analog modules. IC Role / Device Role / Timing Role: Low-noise Zener reference replacing higher-cost IC references where 5% tolerance suffices. Use Value: Delivers <5 pF junction capacitance and 23 Ω impedance to minimize reference noise coupling into high-resolution conversions. |
| Consumer Power Adapter Feedback Loop | Military Radio Transceiver Bias Network |
Use Scenario: Setting error amplifier reference in isolated flyback converter feedback path. IC Role / Device Role / Timing Role: Precision shunt regulator defining secondary-side output voltage setpoint. Use Value: Maintains ±5% regulation accuracy across 10–100% load and 85–264 VAC input, meeting UL62368-1 stability requirements. |
Use Scenario: Establishing stable bias points for RF power amplifier stages in HF/VHF manpack radios. IC Role / Device Role / Timing Role: Radiation-hardened voltage clamp protecting sensitive GaAs FET gate bias networks. Use Value: Withstands 100 krad(Si) TID per MicroNote 050 and operates reliably from –55°C to +125°C per MIL-PRF-19500 screening options. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5228BRLG | Same 3.9 V, ±5%, DO-35 package but with "RLG" suffix indicating bulk packaging and non-RoHS tin-lead plating | Lacks RoHS compliance; unsuitable for EU-market consumer products requiring lead-free finish | Select 1N5228BE3/TR for automated assembly and RoHS-constrained programs; choose 1N5228BRLG only for legacy repair or non-regulated markets |
| MMBZ5228BS | SOT-23 surface-mount package, same 3.9 V/±5%, but rated at 225 mW and 17 Ω ZZT | Lower power rating and different thermal profile; requires PCB rework for footprint compatibility | Choose MMBZ5228BS only when board space is constrained and thermal management permits reduced dissipation; not a drop-in replacement |
Compared with 1N5228BRLG and MMBZ5228BS, the 1N5228BE3/TR uniquely combines RoHS compliance, tape-and-reel automation readiness, full 500 mW rating, and JEDEC-standard DO-35 mechanical form - making it optimal for new industrial and automotive designs requiring supply chain continuity and regulatory alignment.
Availability
1N5228BE3/TR is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC analog modules, and consumer power adapter feedback circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5228BE3/TR 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N52xx series was designed as a JEDEC-standardized family of general-purpose, high-temperature Zener diodes targeting cost-sensitive yet mission-critical voltage regulation in harsh-environment electronics.
FAQ
What is the Zener voltage tolerance of the 1N5228BE3/TR?
The 1N5228BE3/TR has a nominal Zener voltage of 3.9 V with a tolerance of ±5%, denoted by the "B" suffix in its part number. This means the actual breakdown voltage falls between 3.705 V and 4.095 V when measured at 20 mA test current and 25°C ambient temperature, per Microsemi's published electrical characteristics table.
Does the 1N5228BE3/TR meet RoHS requirements?
Yes, the "e3" suffix in 1N5228BE3/TR explicitly indicates RoHS compliance with annealed matte-tin plating, satisfying EU Directive 2011/65/EU. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is certified per Microsemi's material declarations.
What is the maximum power dissipation for the 1N5228BE3/TR at elevated temperatures?
The 1N5228BE3/TR is rated for 500 mW at 25°C, with linear derating to zero at 175°C. At 100°C ambient, its usable power drops to approximately 312.5 mW (derate 6.25 mW/°C beyond 25°C), based on the 250 °C/W junction-to-lead thermal resistance specified with 3/8″ lead length from the DO-35 body.
Can the 1N5228BE3/TR be used in surface-mount designs?
No - the 1N5228BE3/TR uses a glass axial-leaded DO-35 (DO-204AH) package intended for through-hole mounting. For surface-mount equivalents, Microsemi offers the MLL5228B in DO-213AA (MELF) package; the 1N5228BE3/TR itself requires axial-leaded PCB footprints and wave or hand soldering processes.
What is the Zener impedance of the 1N5228BE3/TR and why does it matter?
The 1N5228BE3/TR has a Zener impedance (ZZT) of 23 Ω measured at 20 mA test current. This value reflects the diode's dynamic resistance in breakdown - lower impedance yields tighter voltage regulation under varying load currents, critical for maintaining reference stability in feedback loops and precision bias networks.
1N5228BE3/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- 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:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5228BE3/TR FAQ
1.How can I place an order for 1N5228BE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5228BE3/TR 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 1N5228BE3/TR reliable?
The price and inventory of 1N5228BE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5228BE3/TR is usually 5 days.
3.What payment methods are accepted for 1N5228BE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5228BE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5228BE3/TR?
1N5228BE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5228BE3/TR 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 1N5228BE3/TR?
For technical support, including 1N5228BE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5228BE3/TR requirements.
6.How does Aetrix verify that 1N5228BE3/TR is sourced from the original manufacturer or authorized distributors?
All 1N5228BE3/TR 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 1N5228BE3/TR meets industry standards.
7.What is the process for return or replacement of 1N5228BE3/TR?
All 1N5228BE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5228BE3/TR, 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 1N5228BE3/TR part is unused and in its original packaging.
Return procedure for 1N5228BE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5228BE3/TR Tags
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MM5Z5V1ST1G
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