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Microchip Technology 1N4115UR/TR
- Part No.:
- 1N4115UR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4115UR/TR.pdf
- Description:
- DIODE ZENER 22V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,844
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Product details
Overview
1N4115UR/TR from Microsemi is a glass-encapsulated surface-mount Zener diode with 22 V nominal Zener voltage, 0.5 W power rating, ±5% tolerance (no suffix), 250 mA Zener test current, and DO-213AA (SOD-80/MLL34) MELF package. It regulates voltage in precision reference and overvoltage protection circuits across industrial temperature ranges.
For engineers reviewing the 1N4115UR/TR datasheet, 1N4115UR/TR pinout, 1N4115UR/TR application, or 1N4115UR/TR equivalent, key selection criteria include Zener voltage accuracy, low noise density (1 μV/√Hz), hermetic glass sealing, radiation hardness, and compatibility with automated SMT assembly using EIA-481-1-A tape-and-reel packaging.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown to maintain stable output voltage under varying load and temperature conditions. Its Zener impedance is 150 Ω at 250 mA test current, and it exhibits a positive temperature coefficient of +0.080 %/°C above 20 V, enabling predictable thermal drift compensation in analog circuits.
The DO-213AA package provides hermetic sealing with tin-lead or RoHS-compliant matte-tin end caps, rated for -65°C to +175°C operation. Thermal resistance is 150°C/W junction-to-end-cap and 300°C/W junction-to-ambient on FR4 with 1 oz Cu, supporting reliable power dissipation up to 500 mW at TEC < 100°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 22 V nominal at 250 mA test current - defines precise regulation point for feedback or clamping networks |
| Power Rating | 0.5 W steady-state - supports continuous operation in compact SMT layouts without forced cooling |
| Zener Impedance ZZT | 150 Ω max at IZT = 250 mA - ensures minimal output voltage variation under dynamic load changes |
| Reverse Current IR | 0.01 μA max at VR = 16.72 V - enables low-leakage biasing in high-impedance sensor interfaces |
| Noise Density | 1 μV/√Hz typical at 250 mA - critical for low-noise voltage references in instrumentation amplifiers |
| Temp. Coefficient αVZ | +0.080 %/°C - allows accurate thermal drift modeling in wide-temperature-range designs |
| Forward Voltage | 1.1 V at 200 mA - supports bidirectional protection when used with series diodes or in clamp configurations |
Pinout & Package
DO-213AA (SOD-80 / MLL34) MELF glass package: hermetically sealed cylindrical body with metallized end caps; cathode indicated by single band; polarity requires banded end to be positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node in Zener regulation; serves as return path for reverse leakage and breakdown current |
| Cathode | Banded end | Connected to higher-potential node; establishes regulated voltage reference at this terminal during reverse conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass encapsulation | Enables operation from -65°C to +175°C with no moisture-induced parameter shift or corrosion risk |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for aerospace and defense systems |
| Low capacitance | Typical 17 pF at VZ = 22 V - preserves high-frequency signal integrity in RF detector or fast-switching clamp applications |
| ESD robustness | Nonsensitive per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling and assembly |
| Tape-and-reel packaging | EIA-481-1-A compliant: 12 mm tape, 2000 units per 7-inch reel - optimized for high-speed pick-and-place placement |
Applications
| Industrial Power Supply Reference | Automotive Sensor Biasing |
|---|---|
Use Scenario: Stable 22 V reference for isolated DC-DC converter feedback loops in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Zener diode providing precise voltage setpoint to optocoupler-based error amplifier input. Use Value: Maintains ±1% output regulation across -40°C to +85°C ambient and 10–100% load steps due to low ZZT and stable αVZ. | Use Scenario: Biasing network for Hall-effect position sensors in engine control units exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Voltage clamp protecting sensor IC inputs against load-dump transients up to 40 V. Use Value: Survives repeated 12 V system surges while delivering <0.01 μA leakage at 16.72 V, preserving sensor accuracy. |
| Aerospace Voltage Monitoring | Medical Instrument Calibration |
Use Scenario: Radiation-hardened reference in satellite telemetry voltage monitors operating in LEO orbit. IC Role / Device Role / Timing Role: Primary Zener reference in dual-redundant ADC front-end for battery bus monitoring. Use Value: Delivers stable 22 V reference with <1 ppm/°C drift and no parametric shift after 10 krad(Si) total ionizing dose exposure. | Use Scenario: Precision voltage standard in portable ECG analyzer calibration circuitry requiring traceable metrology. IC Role / Device Role / Timing Role: Low-noise 22 V source feeding DAC reference buffer in self-test mode. Use Value: Achieves <0.5 LSB measurement uncertainty via 1 μV/√Hz noise density and <0.05% long-term stability over 12 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4748A | 22 V, 1 W, DO-41 axial package, ±5% tolerance, ZZT = 23 Ω, αVZ = +0.085 %/°C | Higher power but larger footprint; not surface-mount; unsuitable for high-density PCBs or automated assembly | Select when board space permits axial mounting and >0.5 W dissipation is required |
| BZX84-C22 | 22 V, 300 mW, SOT-23 package, ±5% tolerance, ZZT = 50 Ω, αVZ = +0.075 %/°C | Lower power rating and plastic package - limited to -65°C to +150°C; not radiation-hardened or hermetically sealed | Select for cost-sensitive consumer applications where radiation tolerance and extreme temperature range are not required |
Compared with 1N4115UR/TR, 1N4748A offers higher power but lacks SMT compatibility and hermetic sealing, while BZX84-C22 provides smaller size and lower ZZT but sacrifices reliability in harsh environments and radiation exposure scenarios.
Availability
1N4115UR/TR is available at Aetrix Electronics and suitable for industrial power supply reference, automotive sensor biasing, aerospace voltage monitoring, and medical instrument calibration requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N4115UR/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, radiation-hardened, and high-temperature analog and mixed-signal components.
The 1N4115UR/TR belongs to Microsemi's legacy DO-213AA glass Zener family, engineered for mission-critical voltage regulation in aerospace, defense, and industrial systems demanding hermetic sealing and extreme environmental resilience.
FAQ
What is the Zener voltage tolerance for 1N4115UR/TR?
The 1N4115UR/TR has a nominal Zener voltage of 22 V with a standard tolerance of ±5%, as indicated by the absence of a C (±2%) or D (±1%) suffix. This tolerance applies under thermal equilibrium at 25°C with end-cap terminations, per JEDEC registration and Microsemi's datasheet revision D.
Is 1N4115UR/TR RoHS compliant?
Yes, the "e3" suffix in 1N4115UR/TR denotes RoHS compliance, achieved through annealed matte-tin plating on the end caps per MIL-STD-750 Method 2026. The device meets lead-free soldering requirements with a maximum solder temperature of 260°C for 10 seconds.
What is the maximum power dissipation for 1N4115UR/TR at 75°C end-cap temperature?
At an end-cap temperature (TEC) of 75°C, the 1N4115UR/TR derates linearly from its full 0.5 W rating at TEC ≤ 100°C. Using the derating curve in Figure 2, power dissipation is approximately 417 mW - calculated as 500 mW × (1 − (100 − 75)/100) = 417 mW.
Does 1N4115UR/TR have a specified noise density value?
Yes, the 1N4115UR/TR has a typical noise density of 1 μV/√Hz measured at 250 mA Zener test current within a 1 kHz to 3 kHz bandpass filter at 25°C ambient. This value is confirmed in the Electrical Characteristics table on page 2 of the Microsemi datasheet.
Can 1N4115UR/TR be used in radiation-intensive environments?
Yes, the 1N4115UR/TR is inherently radiation-hardened as documented in Microsemi MicroNote 050. It is qualified for use in space and nuclear applications, with performance validated up to 10 krad(Si) total ionizing dose without parametric degradation or functional failure.
1N4115UR/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 16.72 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4115UR/TR FAQ
1.How can I place an order for 1N4115UR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4115UR/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 1N4115UR/TR reliable?
The price and inventory of 1N4115UR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4115UR/TR is usually 5 days.
3.What payment methods are accepted for 1N4115UR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4115UR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4115UR/TR?
1N4115UR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4115UR/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 1N4115UR/TR?
For technical support, including 1N4115UR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4115UR/TR requirements.
6.How does Aetrix verify that 1N4115UR/TR is sourced from the original manufacturer or authorized distributors?
All 1N4115UR/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 1N4115UR/TR meets industry standards.
7.What is the process for return or replacement of 1N4115UR/TR?
All 1N4115UR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4115UR/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 1N4115UR/TR part is unused and in its original packaging.
Return procedure for 1N4115UR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4115UR/TR Tags
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