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Microchip Technology 1N4113UR-1/TR
- Part No.:
- 1N4113UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4113UR-1/TR.pdf
- Description:
- DIODE ZENER 19V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,877
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Product details
Overview
1N4113UR-1 from Microsemi is a 500 mW, 19.0 V ±5% surface-mount Zener diode in DO-213AA (MELF) glass package, qualified to JANTXV level per MIL-PRF-19500/435, with 150 Ω dynamic impedance at 250 mA test current and 0.05 µA maximum reverse leakage at 14.5 V. It delivers stable voltage regulation in precision reference and power supply feedback circuits across military and aerospace systems.
For engineers reviewing the 1N4113UR-1 datasheet, 1N4113UR-1 pinout, 1N4113UR-1 application, or 1N4113UR-1 equivalent, key selection criteria include Zener voltage tolerance, low noise density (1 µV/√Hz), hermetic DO-213AA packaging, MIL-qualified reliability, and thermal resistance of 100 °C/W junction-to-end-cap.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown with tightly controlled VZ = 19.0 V at IZT = 250 mA and exhibiting αVZ = +0.090 %/°C temperature coefficient. Its metallurgically bonded construction ensures mechanical robustness and long-term stability under thermal cycling.
The DO-213AA package enables high-reliability surface mounting with minimal parasitic capacitance (<1.5 pF typical) and non-ESD-sensitive behavior per MIL-STD-750 Method 1020. Rated average power dissipation is 500 mW, derating linearly to zero at 175 °C ambient on standard FR4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 19.0 V ±5% at 250 mA - defines precise regulation point for feedback loops and references |
| Power Dissipation | 500 mW - supports stable operation in compact, unheatsinked PCB layouts |
| Dynamic Impedance ZZT | 150 Ω at 250 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage IR | 0.05 µA max at 14.5 V - guarantees low quiescent current in high-impedance bias networks |
| Noise Density | 1 µV/√Hz - enables use in low-noise analog references and precision instrumentation |
| Temp. Coefficient αVZ | +0.090 %/°C - provides predictable, monotonic drift for temperature-compensated designs |
| Junction Temp. Range | –65 °C to +175 °C - supports operation in extreme environmental conditions |
Pinout & Package
DO-213AA (SOD-80 / CDLL34) MELF-style hermetically sealed glass package with axial symmetry; cathode indicated by single band; terminals are non-polarized metallurgical end caps; no discrete pins - device connects via end-cap soldering to PCB pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode End (banded) | Reverse-biased anode connection point | Must be held at higher potential than anode end to enable Zener conduction; polarity critical for regulation |
| Anode End (unbanded) | Reverse-biased cathode connection point | Reference ground or return node in shunt regulator configuration; defines VZ drop direction |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | JANTXV screening confirmed - meets stringent burn-in, life test, and radiation hardness requirements for flight-critical systems |
| Metallurgical bond construction | Eliminates wire bonds and epoxy interfaces - improves thermal cycling endurance and long-term parameter stability |
| Low noise density | 1 µV/√Hz at 19 V - enables direct use in high-resolution ADC references without external filtering |
| Hermetic glass package | DO-213AA seal prevents moisture ingress and parametric shift over decades of storage or operation |
| Non-ESD-sensitive design | Complies with MIL-STD-750 Method 1020 - eliminates need for ESD handling protocols during assembly |
Applications
| Avionics Power Monitoring | Satellite DC-DC Converter Feedback |
|---|---|
Use Scenario: Real-time monitoring of 28 V aircraft bus voltage using a resistive divider into an ADC input. IC Role / Device Role / Timing Role: Precision shunt reference providing stable 19.0 V reference point for ratio-metric measurement. Use Value: Enables ±0.5% bus voltage accuracy over –55 °C to +125 °C due to tight VZ tolerance and +0.090 %/°C TC. |
Use Scenario: Output voltage sensing in radiation-hardened isolated flyback converter supplying FPGA core rails. IC Role / Device Role / Timing Role: Zener-based feedback element in optocoupler-isolated voltage loop. Use Value: Maintains regulation stability under total ionizing dose (TID) exposure per MicroNote 050, with no parameter shift beyond spec limits. |
| Ground-Based Radar Bias Supply | Tactical Radio RF Front-End Reference |
Use Scenario: Generating stable bias voltages for GaN PA driver stages in pulsed radar transmitters. IC Role / Device Role / Timing Role: Low-noise voltage clamp protecting sensitive gate drive circuitry from transient overshoot. Use Value: 1 µV/√Hz noise floor prevents AM sideband degradation in 2–4 GHz transmit chains. |
Use Scenario: Providing regulated local oscillator tuning voltage in SDR transceivers operating in contested EM environments. IC Role / Device Role / Timing Role: Temperature-stable reference source for DAC-controlled varactor bias network. Use Value: +0.090 %/°C TC allows full-range operation from –40 °C to +85 °C without calibration drift exceeding 0.15 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4113-1 | Commercial-grade, RoHS-compliant version; same VZ, IZT, ZZT, and package; lacks MIL screening | Not suitable for defense/aerospace deployments requiring JANTXV traceability or radiation hardness | Select when cost, lead time, or RoHS compliance are prioritized over extended reliability testing |
| 1N4113UR-1e3 | Identical electrical specs and DO-213AA package; includes RoHS-compliant matte-tin plating (e3 suffix) | Same MIL-qualified performance but with Pb-free termination; requires reflow profile validation for matte-tin wetting | Choose for new designs targeting RoHS compliance while retaining full JANTXV qualification and hermeticity |
Compared with CDLL4113-1 and 1N4113UR-1e3, the 1N4113UR-1 offers verified JANTXV screening and legacy tin-lead termination, making it optimal for legacy system repair and programs where process control documentation for Pb-free reflow is not established.
Availability
1N4113UR-1 is available at Aetrix Electronics and suitable for avionics power monitoring, satellite DC-DC converter feedback, and ground-based radar bias supply requiring stable component supply with full MIL-PRF-19500 traceability and long-term obsolescence management.
Supply support for 1N4113UR-1 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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N4113UR-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for mission-critical voltage reference and regulation in harsh-environment electronics where parametric stability, radiation tolerance, and long-term reliability are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N4113UR-1?
The 1N4113UR-1 has a nominal Zener voltage of 19.0 V with a standard tolerance of ±5%, as defined in the JEDEC 1N-series specification and confirmed in Microsemi's T4-LDS-0245 datasheet. This tolerance applies at 25 °C with the diode in thermal equilibrium and measured at IZT = 250 mA. No tighter tolerance (e.g., 2% or 1%) is specified for this particular variant.
Is the 1N4113UR-1 RoHS compliant?
The base 1N4113UR-1 is not RoHS compliant, as it uses traditional tin-lead plating per MIL-STD-750. However, the RoHS-compliant version is explicitly designated as 1N4113UR-1e3 (with e3 suffix), which features annealed matte-tin termination and is available for commercial-grade ordering. The e3 variant retains full JANTXV qualification and identical electrical performance.
What package type does the 1N4113UR-1 use?
The 1N4113UR-1 uses the DO-213AA package - a hermetically sealed, cylindrical glass MELF-style case also known as SOD-80 or CDLL34. It has no leads; instead, it mounts axially via metallized end caps onto PCB pads. Dimensions are 1.60–1.70 mm diameter and 3.30–3.71 mm length, per the package drawing in T4-LDS-0245 Rev. 2.
Does the 1N4113UR-1 require derating above 25 °C?
Yes - the 1N4113UR-1 linearly derates from 500 mW starting at 25 °C ambient on a standard FR4 board, reaching zero dissipation at 175 °C. Derating follows a slope of approximately 3.33 mW/°C. At 125 °C ambient, rated power drops to ~167 mW. This curve is documented in Figure 2 of the T4-LDS-0245 datasheet.
How is polarity marked on the 1N4113UR-1?
The 1N4113UR-1 uses a single cathode band at one end of the DO-213AA glass body to indicate polarity. For proper Zener operation, the banded (cathode) end must be held at a higher potential than the unbanded (anode) end. This marking is consistent across all UR-1 series devices and aligns with JEDEC-standard MELF diode conventions.
1N4113UR-1/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):
- 19 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 14.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4113UR-1/TR FAQ
1.How can I place an order for 1N4113UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4113UR-1/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 1N4113UR-1/TR reliable?
The price and inventory of 1N4113UR-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4113UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4113UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4113UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4113UR-1/TR?
1N4113UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4113UR-1/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 1N4113UR-1/TR?
For technical support, including 1N4113UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4113UR-1/TR requirements.
6.How does Aetrix verify that 1N4113UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4113UR-1/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 1N4113UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4113UR-1/TR?
All 1N4113UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4113UR-1/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 1N4113UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4113UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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