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Microchip Technology 1N5223A/TR
- Part No.:
- 1N5223A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5223A/TR.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,892
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Product details
Overview
1N5223A/TR from Microsemi is a 2.7 V, ±10% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current, 30 Ω dynamic impedance at IZT, and -0.080 %/°C temperature coefficient - used for precision low-voltage reference and voltage regulation in power supply feedback paths.
For engineers reviewing the 1N5223A/TR datasheet, 1N5223A/TR pinout, 1N5223A/TR application, or 1N5223A/TR equivalent, this page delivers verified electrical specs, thermal derating behavior, cathode-band polarity marking, RoHS-compliant plating options, and direct alternatives with documented tolerance and impedance differences.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its 2.7 V nominal Zener voltage is specified at 20 mA test current (IZT), with 30 Ω dynamic impedance (ZZT) measured at IZK = 0.25 mA and 75 Ω at IZT.
The device exhibits a negative temperature coefficient of -0.080 %/°C, indicating decreasing Zener voltage with rising junction temperature - critical for biasing circuits requiring predictable thermal drift compensation. It is rated for operation from -65°C to +175°C and features hermetically sealed glass construction with tin-lead or RoHS-compliant matte-tin plating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 2.7 V @ 20 mA - defines regulated output voltage in shunt regulator configurations |
| Zener Tolerance | ±10% (A suffix) - sets worst-case voltage window (2.43–2.97 V) for design margining |
| Power Dissipation | 500 mW at 25°C - limits maximum continuous power before thermal derating begins |
| Dynamic Impedance (ZZT) | 30 Ω @ IZK = 0.25 mA - determines voltage regulation stiffness under small-signal AC ripple |
| Temperature Coefficient (αVZ) | -0.080 %/°C - quantifies Zener voltage drift per degree Celsius rise in junction temperature |
| Max Reverse Current (IR) | 150 μA @ VR = 1.0 V - defines leakage threshold below which regulation is not active |
| Forward Voltage (VF) | 1.5 V max @ 200 mA - constrains forward-conduction loss in bidirectional protection or clamp roles |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package: hermetically sealed cylindrical body with 0.2 g mass, 3/8″ (10 mm) lead length standard, tin-lead or RoHS-compliant matte-tin plating, cathode indicated by single black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current sink during Zener conduction | Connected to lower-potential node (e.g., ground or return path) in shunt regulation |
| Cathode (banded end) | Regulated voltage reference node | Connected to input rail; output voltage appears at this terminal relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered DO-35 construction | Ensures mechanical and thermal compatibility with legacy axial-lead PCB footprints and wave-solder processes |
| Stable 2.7 V reference over -65°C to +175°C | Supports operation in automotive engine compartments and industrial control enclosures without external compensation |
| Low 30 Ω dynamic impedance at 0.25 mA | Enables effective ripple suppression in low-current bias networks (e.g., op-amp references) |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for handling precautions or on-board ESD protection in assembly |
| RoHS-compliant option (e3 suffix) | Permits use in environmentally regulated markets without lead-free process requalification |
Applications
| Low-Voltage Power Supply Reference | Overvoltage Clamp for Signal Lines |
|---|---|
|
Use Scenario: Providing stable 2.7 V reference for linear regulator error amplifiers or ADC voltage references in battery-powered instrumentation. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining fixed potential between cathode and anode under variable load current. Use Value: Delivers ±10% tolerance and -0.080 %/°C drift - sufficient for 8-bit system accuracy without trimming or calibration. |
Use Scenario: Protecting 3.3 V logic inputs from transient surges exceeding 3.0 V in industrial sensor interfaces. IC Role / Device Role / Timing Role: Bidirectional clamp: conducts in forward direction up to 1.5 V, regulates reverse above 2.43 V (min VZ). Use Value: Limits peak excursion to ≤2.97 V (max VZ) while drawing <150 μA leakage below 1.0 V - avoids signal loading. |
| Temperature-Compensated Bias Network | Legacy Analog Circuit Voltage Stabilizer |
|
Use Scenario: Biasing transistor amplifiers where predictable thermal drift offsets other component drift (e.g., matched pair compensation). IC Role / Device Role / Timing Role: Zener element in series with positive-TC resistor to achieve near-zero net drift. Use Value: -0.080 %/°C coefficient enables precise cancellation against +0.080 %/°C resistors or silicon junctions. |
Use Scenario: Replacing obsolete 2.7 V Zeners in maintenance of legacy telecom line cards and analog test equipment. IC Role / Device Role / Timing Role: Direct drop-in replacement for 1N5223A in DO-35 sockets with identical mechanical and electrical footprint. Use Value: JEDEC-registered 1N5223A/TR maintains form-fit-function compliance with original design documentation and 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 |
|---|---|---|---|
| 1N5223B/TR | ±5% tolerance (vs. ±10% for 1N5223A/TR); same VZ, IZT, ZZT, and αVZ | Higher precision required in feedback loops where 2.565–2.835 V window is insufficient | Select when tighter regulation stability justifies cost premium and layout allows same DO-35 footprint |
| MMBZ5223BS-7-F | SOT-23 surface-mount package; 2.7 V ±5%; 225 mW rating; 30 Ω ZZT; RoHS only | Board space-constrained designs requiring automated placement and reflow soldering | Choose for high-density PCBs where axial leads are incompatible with layout or assembly process |
Compared with 1N5223B/TR and MMBZ5223BS-7-F, the 1N5223A/TR offers the broadest operating temperature range (-65°C to +175°C), highest power rating (500 mW), and compatibility with MIL-PRF-19500 screening - making it optimal for ruggedized, through-hole, high-reliability applications where ±10% tolerance is acceptable.
Availability
1N5223A/TR is available at Aetrix Electronics and suitable for low-voltage reference generation, overvoltage clamping, and temperature-compensated bias networks requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1N5223A/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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N5223A/TR belongs to Microsemi's legacy 1N52xx family of glass-passivated Zener diodes - engineered for stable voltage regulation in harsh environments, with emphasis on wide temperature operation, hermetic sealing, and MIL-qualified screening options.
FAQ
What is the Zener voltage tolerance of the 1N5223A/TR?
The 1N5223A/TR has a nominal Zener voltage of 2.7 V with a guaranteed tolerance of ±10%, meaning the actual breakdown voltage falls between 2.43 V and 2.97 V when tested at 20 mA. This tolerance is defined by the "A" suffix per Microsemi's datasheet and applies across the full operating temperature range of -65°C to +175°C.
Does the 1N5223A/TR have a specified dynamic impedance?
Yes, the 1N5223A/TR has a maximum dynamic impedance (ZZT) of 30 Ω, measured at IZK = 0.25 mA. At the 20 mA test current (IZT), its impedance is 75 Ω. These values reflect the device's ability to maintain stable voltage under small-signal AC variations and are critical for ripple rejection in reference applications.
What is the temperature coefficient of the 1N5223A/TR?
The 1N5223A/TR has a temperature coefficient (αVZ) of -0.080 %/°C, indicating that its Zener voltage decreases by approximately 0.080% per degree Celsius rise in junction temperature. This value is measured between 25°C and 125°C at 7.5 mA and is essential for predicting voltage drift in thermally varying environments.
Is the 1N5223A/TR RoHS compliant?
The base 1N5223A/TR is not inherently RoHS compliant, but RoHS-compliant versions are available with the "e3" suffix (e.g., 1N5223Ae3/TR). These variants use annealed matte-tin plating instead of tin-lead and meet EU RoHS Directive 2011/65/EU requirements without compromising electrical or thermal performance.
What packaging options are available for the 1N5223A/TR?
The 1N5223A/TR is supplied in tape-and-reel format per EIA-296 standards, indicated by the "TR" suffix. The device uses a DO-35 (DO-204AH) glass axial-leaded package with 0.2 g mass, 3/8″ (10 mm) lead length, and cathode identified by a single black band. Bulk and ammo-pack options may be available upon request.
1N5223A/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):
- 2.7 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 75 µA @ 950 mV
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5223A/TR FAQ
1.How can I place an order for 1N5223A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5223A/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 1N5223A/TR reliable?
The price and inventory of 1N5223A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5223A/TR is usually 5 days.
3.What payment methods are accepted for 1N5223A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5223A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5223A/TR?
1N5223A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5223A/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 1N5223A/TR?
For technical support, including 1N5223A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5223A/TR requirements.
6.How does Aetrix verify that 1N5223A/TR is sourced from the original manufacturer or authorized distributors?
All 1N5223A/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 1N5223A/TR meets industry standards.
7.What is the process for return or replacement of 1N5223A/TR?
All 1N5223A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5223A/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 1N5223A/TR part is unused and in its original packaging.
Return procedure for 1N5223A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5223A/TR Tags
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