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Microchip Technology 1N4114/TR
- Part No.:
- 1N4114/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4114/TR.pdf
- Description:
- DIODE ZENER 20V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:6,369
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Product details
Overview
1N4114/TR from Microsemi is a 500 mW, 20 V ±5% metallurgically bonded glass Zener diode in DO-35 package, qualified to JANTX level per MIL-PRF-19500/435. It delivers stable voltage regulation at 250 mA test current with 150 Ω dynamic impedance, low noise density (1 µV/√Hz), and operates across –65 °C to +175 °C for aerospace power supply reference applications.
For engineers reviewing the 1N4114/TR datasheet, 1N4114/TR pinout, 1N4114/TR application, or 1N4114/TR equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (250 °C/W junction-to-lead), noise performance at 20 V, and MIL-spec qualification level - all critical for high-reliability analog reference and biasing circuits.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain precise DC voltage under varying load and temperature. Its metallurgical bond ensures mechanical stability and low parameter drift, while the hermetically sealed DO-35 glass package supports operation up to 175 °C junction temperature and meets MIL-STD-750 ESD immunity requirements.
Regulation occurs at IZT = 250 mA with VZ = 20.0 V, exhibiting αVZ = +0.090 %/°C and ZZT = 150 Ω. Noise density is specified at 1 µV/√Hz - among the lowest in the 1N41xx series - enabling use in low-noise reference designs where voltage stability and spectral purity are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.0 V at 250 mA - defines stable regulation point for precision biasing and reference circuits |
| Power Dissipation | 500 mW at 25 °C - supports continuous operation with linear derating to zero at 175 °C junction |
| Dynamic Impedance (ZZT) | 150 Ω at 250 mA - determines output voltage variation under load current changes |
| Noise Density | 1 µV/√Hz - enables low-noise analog references in instrumentation and signal conditioning |
| Temp. Coefficient (αVZ) | +0.090 %/°C - quantifies voltage drift over temperature for system-level accuracy budgeting |
| Reverse Leakage (IR) | 0.01 µA at 15.2 V - ensures minimal standby current in high-impedance sensing nodes |
| Junction Temp. Range | –65 °C to +175 °C - validated for extended-range military, avionics, and downhole electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground or lower-potential node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener regulation output | Banded end - must be held positive relative to anode to enable breakdown and voltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term parameter stability in harsh environments |
| MIL-PRF-19500/435 qualification | Validated reliability up to JANTX level - includes screening for vibration, shock, temperature cycling, and hermeticity |
| Low noise density (1 µV/√Hz) | Reduces RMS voltage error in precision references, critical for ADC/DAC voltage references and sensor excitation |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter shift over time - essential for >10-year field life in sealed systems |
| Non-ESD-sensitive design | Withstands handling without special precautions per MIL-STD-750 method 1020 - simplifies assembly and test logistics |
Applications
| Aerospace Power Reference | Avionics Sensor Biasing |
|---|---|
Use Scenario: Providing stable 20 V reference for analog front-end circuitry in flight control computers. IC Role / Device Role / Timing Role: Zener diode acting as primary shunt voltage reference for op-amp bias networks and DAC reference dividers. Use Value: JANTX qualification and –65 °C to +175 °C operation ensure functional integrity across stratospheric and engine-bay thermal profiles. | Use Scenario: Supplying regulated excitation voltage to piezoresistive pressure transducers in environmental monitoring modules. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining constant bias across sensor bridge elements despite supply ripple. Use Value: 1 µV/√Hz noise density minimizes measurement uncertainty in microvolt-level bridge output signals. |
| Downhole Instrumentation | Military Radio RF Stage Bias |
Use Scenario: Voltage clamping and reference generation in logging-while-drilling (LWD) tools exposed to >150 °C ambient. IC Role / Device Role / Timing Role: High-temperature Zener regulator stabilizing LDO input rails and protecting downstream analog ICs. Use Value: Hermetic DO-35 package and 175 °C max junction rating prevent parametric shift during extended high-temperature operation. | Use Scenario: Establishing fixed gate bias for GaAs FET amplifiers in tactical HF/VHF transceivers. IC Role / Device Role / Timing Role: Low-noise, stable Zener source replacing resistive divider to improve amplifier gain stability and phase noise. Use Value: +0.090 %/°C tempco and 150 Ω impedance reduce bias drift-induced gain compression across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4114US | Same 20 V Zener, but in surface-mount DO-213AA package; no axial leads | Requires SMT assembly; unsuitable for through-hole prototyping or high-vibration mechanical retention | Select 1N4114US only when board space constraints mandate SMT and thermal path supports 250 °C/W junction-to-pad dissipation |
| 1N4744A | 20 V Zener, 1 W rating, DO-41 package, commercial-grade only, ±5% tolerance, no MIL qualification | Lacks JANTX screening, higher noise (10 µV/√Hz), wider thermal resistance (500 °C/W), not radiation-hardened | Choose 1N4744A only for cost-sensitive industrial controls where MIL-spec reliability and low-noise performance are non-critical |
Compared with 1N4114US and 1N4744A, the 1N4114/TR uniquely combines JANTX-level reliability, ultra-low 1 µV/√Hz noise, and axial-leaded DO-35 form factor - making it irreplaceable in mission-critical analog references where parameter stability under thermal stress and radiation exposure is mandatory.
Availability
1N4114/TR is available at Aetrix Electronics and suitable for aerospace power reference, avionics sensor biasing, and downhole instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N4114/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 defense, aerospace, and industrial markets.
The 1N4114/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical systems where parameter stability, hermeticity, and extended temperature operation are non-negotiable.
FAQ
What is the Zener voltage tolerance for 1N4114/TR?
The 1N4114/TR has a nominal Zener voltage of 20.0 V with a standard tolerance of ±5%, as defined by JEDEC registration and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies under standard test conditions of 25 °C and IZT = 250 mA. The 1N4114/TR does not carry tighter tolerance suffixes (e.g., "C" for ±2% or "D" for ±1%) - those are available only on other variants in the same family.
Is 1N4114/TR qualified to JANTX level?
Yes, the 1N4114/TR is qualified to JANTX level per MIL-PRF-19500/435, as explicitly stated in the "Qualified Levels" section on page 1 of the datasheet. This includes full screening for temperature cycling, mechanical shock, vibration, and hermeticity - distinguishing it from commercial-only equivalents like the 1N4744A. The "TR" suffix denotes tape-and-reel packaging but does not affect qualification level.
What is the maximum Zener current (IZM) for 1N4114/TR?
The maximum Zener current for 1N4114/TR is 40 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value corresponds to the current at which the device reaches its rated 500 mW power dissipation at 25 °C lead temperature. Operation above this current requires strict thermal management due to linear derating above 50 °C.
Does 1N4114/TR have RoHS compliance?
The 1N4114/TR is available in RoHS-compliant versions marked with the "e3" suffix (e.g., 1N4114-1e3/TR), as noted in the "PART NOMENCLATURE" section on page 2. However, RoHS compliance applies only to commercial-grade units; JANTX-qualified units retain traditional tin-lead plating to meet MIL-STD-750 solderability requirements. Always verify the full part number suffix to confirm compliance status.
What is the thermal resistance junction-to-lead (RθJL) for 1N4114/TR?
The thermal resistance junction-to-lead (RθJL) for 1N4114/TR is 250 °C/W, measured with 3/8 inch (10 mm) lead length from the body, as listed in the Maximum Ratings table on page 1. This value is critical for calculating junction temperature rise under load and confirms suitability for high-reliability mounting configurations where heat conduction through leads is the dominant thermal path.
1N4114/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AA, DO-7, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 15.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-7 (DO-204AA)
1N4114/TR FAQ
1.How can I place an order for 1N4114/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4114/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 1N4114/TR reliable?
The price and inventory of 1N4114/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4114/TR is usually 5 days.
3.What payment methods are accepted for 1N4114/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4114/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4114/TR?
1N4114/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4114/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 1N4114/TR?
For technical support, including 1N4114/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4114/TR requirements.
6.How does Aetrix verify that 1N4114/TR is sourced from the original manufacturer or authorized distributors?
All 1N4114/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 1N4114/TR meets industry standards.
7.What is the process for return or replacement of 1N4114/TR?
All 1N4114/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4114/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 1N4114/TR part is unused and in its original packaging.
Return procedure for 1N4114/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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