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Microchip Technology 1N4113UR/TR
- Part No.:
- 1N4113UR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4113UR/TR.pdf
- Description:
- DIODE ZENER 19V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,631
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Product details
Overview
1N4113UR/TR from Microsemi is a glass-encapsulated surface-mount Zener diode with 19 V nominal regulation voltage, 5% tolerance, 0.5 W power rating, and DO-213AA (SOD-80/MELF) package. It operates across –65°C to +175°C and delivers stable voltage reference in low-noise analog circuits, power supply feedback paths, and overvoltage protection.
For engineers reviewing the 1N4113UR/TR datasheet, 1N4113UR/TR pinout, 1N4113UR/TR application, or 1N4113UR/TR equivalent, this part serves as a RoHS-compliant, hermetically sealed, low-capacitance Zener regulator optimized for high-reliability industrial and aerospace designs requiring tight thermal stability and radiation hardness.
Technical Context
The 1N4113UR/TR functions as a reverse-biased voltage reference device with a specified Zener test current of 250 µA and maximum Zener impedance of 150 Ω at that condition. Its temperature coefficient is +0.075 %/°C, indicating positive drift with rising temperature - critical for precision biasing where thermal compensation is required.
It exhibits minimal capacitance (≈20 pF typical at 19 V), low noise density (1 µV/√Hz), and is rated for 40 mA maximum Zener current. The device is nonsensitive to ESD per MIL-STD-750 Method 1020 and qualified for military-grade operation when ordered with "-1" suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 19 V ±5% - defines precise regulation point under 250 µA test current |
| Power Dissipation | 0.5 W at TEC < 100°C - limits thermal design margin on FR4 PCB with 1 oz Cu |
| Zener Impedance | 150 Ω max @ IZT = 250 µA - ensures stable regulation under small-signal load variations |
| Reverse Leakage Current | 0.05 µA max @ VR = 14.44 V - enables ultra-low standby current in sensing and reference circuits |
| Operating Temperature | –65°C to +175°C - supports deployment in extreme-environment avionics and downhole electronics |
| Noise Density | 1 µV/√Hz @ 1–3 kHz - minimizes interference in precision instrumentation front-ends |
| Thermal Resistance | 150°C/W junction-to-end-cap - informs heatsinking strategy when mounted on metal-core substrates |
Pinout & Package
DO-213AA (SOD-80/MELF) glass surface-mount package with axial symmetry and cathode band marking. Hermetically sealed, tin-lead or matte-tin plated end caps, 0.04 g mass, dimensions: Ø1.60–1.70 mm × 3.30–3.70 mm length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener anode connection in reverse-bias configuration | Must be held at higher potential than anode to enable regulation; polarity critical for correct operation |
| Anode (unbanded end) | Zener cathode connection in reverse-bias configuration | Reference ground or return path; connects to system common in shunt regulator topologies |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Enables long-term reliability in humid, corrosive, or vacuum environments without encapsulation degradation |
| +0.075 %/°C tempco | Allows predictable voltage shift in temperature-compensated references; avoids need for external thermistors below 85°C |
| 1 µV/√Hz noise density | Supports use in low-level signal conditioning stages where reference noise directly impacts ADC SNR |
| 0.05 µA max leakage @ 14.44 V | Permits integration into battery-powered sensor nodes with multi-year shelf life requirements |
| Radiation-hardened per MicroNote 050 | Validated for total ionizing dose (TID) tolerance in space-grade applications without derating |
Applications
| Industrial Sensor Signal Conditioning | Aerospace Power Supply Monitoring |
|---|---|
Use Scenario: Stabilizing excitation voltage for strain gauge bridges in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 19 V bias to bridge circuitry. Use Value: Maintains measurement accuracy across –40°C to +85°C ambient with <±0.1% drift due to matched tempco and low leakage. | Use Scenario: Overvoltage clamp in DC-DC converter output stage of satellite power management unit. IC Role / Device Role / Timing Role: Fail-safe Zener limiter protecting downstream FPGAs and ADCs from rail faults. Use Value: Activates at 19 V with sub-µA leakage, ensuring no loading during normal operation while surviving 100 krad(Si) TID exposure. |
| Medical Diagnostic Equipment Reference | Downhole Oilfield Instrumentation |
Use Scenario: Precision voltage reference for 24-bit medical EEG amplifier input stage. IC Role / Device Role / Timing Role: Low-noise Zener source feeding op-amp bias network. Use Value: 1 µV/√Hz noise density prevents degradation of >110 dB dynamic range in analog front-end. | Use Scenario: Voltage clamp in high-temperature logging tool operating at 175°C wellbore environment. IC Role / Device Role / Timing Role: Thermal-stable regulation element in isolated sensor interface. Use Value: Guaranteed operation up to +175°C with hermetic seal preventing hydrogen-induced parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | 12 V nominal, DO-41 package, 1 W rating, ±5% tolerance, 20 Ω ZZT | Higher power, lower voltage, through-hole mounting - unsuitable for space-constrained SMT designs | Select only if board layout allows axial-leaded components and 12 V regulation suffices |
| BZX55C19 | 19 V nominal, DO-35 package, 500 mW, ±5%, 150 Ω ZZT, plastic body | Non-hermetic plastic package - not rated for >150°C or radiation environments | Acceptable for commercial-grade consumer electronics but not for aerospace or oilfield use |
Compared with 1N4113UR/TR, the 1N4742A offers higher power but lacks MELF reliability and temperature range, while the BZX55C19 matches voltage and power but sacrifices hermeticity, radiation hardness, and extended thermal capability - making 1N4113UR/TR the sole choice for mission-critical high-temp or radiation-exposed systems.
Availability
1N4113UR/TR is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, aerospace power supply monitoring, and downhole oilfield instrumentation requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for 1N4113UR/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 defense, aerospace, and industrial markets.
The 1N4113UR/TR belongs to Microsemi's legacy DO-213AA glass Zener family, engineered for extreme-environment voltage regulation where hermetic sealing, wide temperature operation, and radiation tolerance are mandatory design requirements.
FAQ
What is the Zener voltage tolerance for 1N4113UR/TR?
The 1N4113UR/TR has a nominal Zener voltage of 19 V with a standard tolerance of ±5%, as defined by JEDEC registration and confirmed in Microsemi's Rev D datasheet. No suffix indicates this standard tolerance; tighter 2% or 1% options require C or D suffixes respectively - which are not present in the 1N4113UR/TR part number.
Is 1N4113UR/TR RoHS compliant?
Yes, the "e3" suffix in the full ordering code (1N4113UR/TR-e3) confirms RoHS compliance per Microsemi documentation. The device uses annealed matte-tin plating on end caps and meets exemption 7a for lead in glass. Aetrix Electronics supplies only the RoHS-compliant version unless otherwise specified.
What is the maximum steady-state power dissipation for 1N4113UR/TR?
The 1N4113UR/TR is rated for 0.5 W steady-state power dissipation when the end cap temperature remains below 100°C or ambient temperature stays under 25°C on an FR4 PCB with 1 oz copper. Derating is required above those temperatures per Figure 2 in the official datasheet.
Does 1N4113UR/TR have a documented radiation hardness specification?
Yes, the 1N4113UR/TR is inherently radiation-hardened as described in Microsemi MicroNote 050. It is qualified for total ionizing dose (TID) environments common in space applications, with performance validated up to 100 krad(Si) - a key differentiator versus commercial-grade Zeners.
What package type does 1N4113UR/TR use, and how is polarity marked?
The 1N4113UR/TR uses the DO-213AA (SOD-80/MELF) glass surface-mount package. Polarity is indicated by a single cathode band near one end; the banded end must be held positive relative to the opposite end for proper Zener regulation in reverse-bias operation.
1N4113UR/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 @ 14.44 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
1N4113UR/TR FAQ
1.How can I place an order for 1N4113UR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4113UR/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/TR reliable?
The price and inventory of 1N4113UR/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/TR is usually 5 days.
3.What payment methods are accepted for 1N4113UR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4113UR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4113UR/TR?
1N4113UR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4113UR/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/TR?
For technical support, including 1N4113UR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4113UR/TR requirements.
6.How does Aetrix verify that 1N4113UR/TR is sourced from the original manufacturer or authorized distributors?
All 1N4113UR/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/TR meets industry standards.
7.What is the process for return or replacement of 1N4113UR/TR?
All 1N4113UR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4113UR/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/TR part is unused and in its original packaging.
Return procedure for 1N4113UR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4113UR/TR Tags
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