My Inquiry
My Account
Microchip Technology 1N4115UR-1/TR
- Part No.:
- 1N4115UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4115UR-1/TR.pdf
- Description:
- DIODE ZENER 22V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,687
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4115UR-1/TR from Microsemi is a 500 mW surface-mount Zener diode in DO-213AA (SOD-80) glass MELF package, rated for 22 V nominal Zener voltage at 250 mA test current, with ±5% tolerance, 150 Ω dynamic impedance, and 0.01 µA maximum reverse leakage at 17.6 V. It delivers stable voltage regulation in high-reliability aerospace, defense, and industrial power supply monitoring circuits.
For engineers reviewing the 1N4115UR-1/TR datasheet, 1N4115UR-1/TR pinout, 1N4115UR-1/TR application, or 1N4115UR-1/TR equivalent, this part supports precision reference design where low noise density (1 µV/√Hz), hermetic sealing, MIL-PRF-19500/435 qualification (JAN/JANTXV/JANS levels), and radiation hardness are required.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 22 V reference across wide current (1–40 mA) and temperature (–65 °C to +175 °C) ranges. Its metallurgically bonded glass construction ensures mechanical robustness and hermeticity, critical for space-grade and avionics applications.
Thermal resistance junction-to-end cap is 100 °C/W, enabling reliable power dissipation up to 500 mW at TC = 25 °C with linear derating to zero at 175 °C. Noise density is specified at 1 µV/√Hz - among the lowest in its voltage class - supporting low-noise analog references and sensor excitation circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V at 250 mA test current - defines precise regulation point for feedback loops and reference rails. |
| Power Dissipation | 500 mW - supports continuous operation in compact SMT layouts without forced cooling. |
| Dynamic Impedance (ZZT) | 150 Ω - ensures minimal output voltage variation under load transients in regulated supplies. |
| Reverse Leakage (IR) | 0.01 µA at 17.6 V - enables ultra-low quiescent current in battery-backed or low-power sensing nodes. |
| Temperature Coefficient | +0.090 %/°C - provides predictable, monotonic drift for compensated reference designs. |
| Noise Density | 1 µV/√Hz - meets stringent requirements for precision instrumentation and ADC reference buffers. |
| Package | DO-213AA (SOD-80) glass MELF - hermetically sealed, RoHS-compliant (e3 suffix optional), with cathode band marking. |
Pinout & Package
DO-213AA (SOD-80) glass MELF package: cylindrical, hermetically sealed, surface-mountable with axial symmetry. Cathode identified by single dark band; device must be oriented with banded end positive during Zener operation. Weight ≈ 0.04 g; recommended footprint per Microsemi T4-LDS-0245 Rev. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current sink terminal in Zener mode | Connected to lower-potential node (e.g., ground or return rail); carries full Zener current IZ. |
| Cathode (banded end) | Regulated output terminal | Provides stable 22 V reference; polarity must be observed - reverse bias only for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in harsh environments (e.g., vacuum, humidity, thermal cycling). |
| MIL-PRF-19500/435 qualification | Available in JAN, JANTX, JANTXV, and JANS reliability levels - certified for mission-critical military and space systems. |
| Low noise density | 1 µV/√Hz at 22 V - enables use in high-resolution analog front-ends without external filtering. |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for low-dose-rate space applications without shielding. |
| ESD immunity | Non-sensitive per MIL-STD-750 Method 1020 - withstands handling and board assembly without protection circuitry. |
Applications
| Avionics Power Monitoring | Satellite DC-DC Reference |
|---|---|
Use Scenario: Real-time detection of 28 V aircraft bus overvoltage events in flight control subsystems. IC Role / Device Role / Timing Role: Zener clamping element in crowbar circuit, triggering shutdown when bus exceeds 22 V threshold. Use Value: Hermetic DO-213AA package ensures reliability across 10,000+ thermal cycles; 0.01 µA leakage prevents false triggers in standby mode. |
Use Scenario: Stable 22 V reference for isolated error amplifiers in radiation-hardened DC-DC converters aboard LEO satellites. IC Role / Device Role / Timing Role: Primary voltage reference for feedback loop compensation network. Use Value: +0.090 %/°C tempco allows predictable drift modeling; inherent radiation hardness avoids TID-induced parameter shift. |
| Industrial PLC Analog Input | Defense Radar Bias Supply |
Use Scenario: Precision scaling of 0–10 V sensor signals into 16-bit ADC range within factory automation controllers. IC Role / Device Role / Timing Role: Shunt reference in programmable gain amplifier input stage. Use Value: 150 Ω ZZT minimizes gain error across 1–20 mA signal currents; 1 µV/√Hz noise preserves SNR > 90 dB. |
Use Scenario: High-stability bias voltage for GaN RF power amplifier gate drivers in ground-based radar transmitters. IC Role / Device Role / Timing Role: Regulation node for negative gate bias rail (-22 V) requiring low drift and ESD resilience. Use Value: Tin-lead or matte-tin plating ensures solder joint integrity after reflow; MIL-qualified screening guarantees lot traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4115-1 | Commercial-grade version of same die; identical 22 V VZ, 150 Ω ZZT, and 1 µV/√Hz noise - but not MIL-qualified. | Lacks JAN/JANTXV/JANS screening; unsuitable for aerospace or defense programs requiring traceable reliability data. | Select CDLL4115-1 only for cost-sensitive commercial industrial equipment with no mil-spec requirements. |
| 1N4115UR-1 | Same specifications and package as 1N4115UR-1/TR, but supplied in bulk or ammo pack - no tape-and-reel packaging. | No EIA-481-1-A compliant reel; incompatible with automated SMT placement unless repackaged. | Choose 1N4115UR-1/TR when direct integration into pick-and-place lines is required; otherwise, 1N4115UR-1 reduces handling cost. |
Compared with CDLL4115-1 and 1N4115UR-1, the 1N4115UR-1/TR uniquely combines full MIL-PRF-19500/435 qualification with EIA-481 tape-and-reel delivery - essential for high-integrity production programs needing both reliability assurance and SMT manufacturability.
Availability
1N4115UR-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite DC-DC reference, and industrial PLC analog input applications requiring stable component supply, full traceability, and extended lifecycle support.
Supply support for 1N4115UR-1/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 Corporation (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 1N4115UR-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed for voltage regulation in mission-critical systems where hermeticity, long-term stability, and environmental resilience are non-negotiable.
FAQ
What is the Zener voltage tolerance for 1N4115UR-1/TR?
The 1N4115UR-1/TR has a nominal Zener voltage of 22 V with a standard tolerance of ±5%, as defined by JEDEC for the 1N4099UR-1 through 1N4135UR-1 series. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current and is verified per MIL-PRF-19500/435 screening requirements.
Is 1N4115UR-1/TR RoHS compliant?
The 1N4115UR-1/TR is available in both RoHS-compliant (e3 suffix) and non-RoHS versions. RoHS compliance applies only to commercial-grade variants; MIL-qualified versions (JAN/JANTXV/JANS) retain tin-lead plating per specification. The "TR" suffix denotes tape-and-reel packaging and does not imply RoHS status.
What is the maximum operating temperature for 1N4115UR-1/TR?
The 1N4115UR-1/TR has a junction and storage temperature range of –65 °C to +175 °C. Its power dissipation linearly derates from 500 mW at 25 °C to zero at 175 °C, with thermal resistance junction-to-end cap rated at 100 °C/W - enabling operation in extreme thermal environments typical of engine-mounted or space-grade electronics.
How is polarity marked on 1N4115UR-1/TR?
The 1N4115UR-1/TR uses a single cathode band on the glass DO-213AA body to indicate polarity. During Zener regulation, the banded (cathode) end must be held at a higher potential than the unbanded (anode) end. This marking is consistent across all UR-series devices and aligns with JEDEC-standard MELF diode orientation conventions.
Does 1N4115UR-1/TR require derating for PCB layout?
Yes - the 1N4115UR-1/TR's 500 mW rating assumes mounting on FR4 with 1 oz copper and Microsemi's recommended footprint (T4-LDS-0245 Rev. 2). Without adequate copper pour or thermal vias, derating begins at 25 °C ambient, reaching zero dissipation at 175 °C. Thermal resistance junction-to-ambient is 300 °C/W under standard conditions.
1N4115UR-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):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 16.8 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
1N4115UR-1/TR FAQ
1.How can I place an order for 1N4115UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4115UR-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 1N4115UR-1/TR reliable?
The price and inventory of 1N4115UR-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 1N4115UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4115UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4115UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4115UR-1/TR?
1N4115UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4115UR-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 1N4115UR-1/TR?
For technical support, including 1N4115UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4115UR-1/TR requirements.
6.How does Aetrix verify that 1N4115UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4115UR-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 1N4115UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4115UR-1/TR?
All 1N4115UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4115UR-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 1N4115UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4115UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4115UR-1/TR Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
