My Inquiry
My Account
Microchip Technology 1N4114
- Part No.:
- 1N4114
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N4114.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:8,471
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4114-1 from Microsemi is a 500 mW, 20.0 V ±5% metallurgically bonded glass Zener diode in DO-35 (DO-204AH) package, qualified to JANTXV level per MIL-PRF-19500/435. It delivers stable voltage regulation at 250 mA test current with 150 Ω dynamic impedance, low 0.01 µA reverse leakage at 16.8 V, and +0.090 %/°C temperature coefficient - used in precision reference and power supply feedback circuits.
For engineers reviewing the 1N4114-1 datasheet, 1N4114-1 pinout, 1N4114-1 application, or 1N4114-1 equivalent, key selection criteria include Zener voltage tolerance, noise density (≤1 µV/√Hz below 6.8 V), thermal resistance (250 °C/W junction-to-lead), radiation hardness, and MIL-spec qualification level for aerospace and defense systems.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with cathode indicated by band and rated for operation from –65 °C to +175 °C. Its metallurgical bond construction ensures mechanical stability under thermal cycling and shock, while hermetic glass sealing prevents moisture ingress and parameter drift.
The 1N4114-1 exhibits a positive temperature coefficient (+0.090 %/°C), enabling predictable voltage drift over temperature, and maintains low noise density (<1 µV/√Hz) due to optimized semiconductor junction design - critical for low-noise analog references and sensor excitation circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 20.0 V at 250 mA - defines nominal regulation point for feedback loop setpoint accuracy |
| Zener Impedance ZZT | 150 Ω - limits output voltage variation under load current changes in regulator circuits |
| Reverse Leakage IR | 0.01 µA @ 16.8 V - ensures minimal error current in high-impedance reference nodes |
| Power Dissipation | 500 mW @ 25 °C - supports stable operation in compact through-hole designs with 250 °C/W junction-to-lead thermal resistance |
| Temp. Coefficient αVZ | +0.090 %/°C - enables predictable voltage drift compensation in wide-temperature environments |
| Noise Density | <1 µV/√Hz - meets low-noise requirements for precision instrumentation and ADC reference buffers |
| Junction Temp. Range | –65 to +175 °C - validated for extended-range military and space-grade applications |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package: hermetically sealed, tin-lead or RoHS-compliant matte-tin plating, cathode identified by color band. Weight ≈ 0.2 g; body diameter 1.42–2.29 mm, length 3.56–5.08 mm, lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; establishes reference polarity for regulation |
| Cathode | Zener regulation terminal / voltage output node | Banded end; supplies regulated 20.0 V when reverse-biased; must be held at higher potential than anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | JANTXV-level reliability verified for aerospace, defense, and high-reliability industrial control systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk during thermal cycling and mechanical shock |
| Hermetic glass sealing | Prevents humidity-induced parameter shift and long-term degradation in harsh environments |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID), per Microsemi MicroNote 050 |
| Low ESD sensitivity | Non-sensitive per MIL-STD-750 Method 1020 - simplifies handling and assembly without special ESD controls |
Applications
| Avionics Power Reference | Satellite DC-DC Converter Feedback |
|---|---|
Use Scenario: Providing stable 20.0 V reference for voltage-controlled oscillators and analog-to-digital converters in flight control computers. IC Role / Device Role / Timing Role: Two-terminal Zener reference source establishing precise bias and scaling points for analog signal chains. Use Value: JANTXV qualification and radiation hardness ensure uninterrupted operation in high-altitude radiation environments. | Use Scenario: Regulating output voltage in isolated flyback converters powering onboard telemetry subsystems. IC Role / Device Role / Timing Role: Primary feedback element in optocoupler-coupled secondary-side regulation loop. Use Value: Low 0.01 µA leakage minimizes error in high-resistance feedback dividers, preserving output accuracy. |
| Ground-Based Radar Bias Supply | Nuclear Instrumentation Channel Reference |
Use Scenario: Generating stable bias voltages for RF power amplifier stages operating across –55 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Temperature-compensated Zener reference in high-stability LDO pre-regulator stage. Use Value: +0.090 %/°C tempco allows predictable calibration offset correction across full military temperature range. | Use Scenario: Serving as primary voltage reference in gamma spectroscopy front-end amplifiers requiring sub-microvolt noise floor. IC Role / Device Role / Timing Role: Low-noise analog reference for charge-sensitive preamplifier gain setting and ADC reference buffer. Use Value: <1 µV/√Hz noise density preserves energy resolution in pulse-height analysis circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | 20 V ±5%, 1 W rating, DO-41 package, no MIL qualification, higher 20 µA leakage at 16 V | Commercial industrial power supplies where radiation hardness and extended temperature range not required | Select 1N4744A only for cost-sensitive non-military designs with adequate derating margin |
| CMZ20B | 20 V ±5%, 500 mW, SOD-123 surface-mount package, AEC-Q200 qualified, 0.1 µA leakage at 16 V | Automotive engine control modules needing reflow-compatible packaging and automotive qualification | Choose CMZ20B for space-constrained PCBs and automotive production, not for hermetic or radiation-hardened use |
Compared with 1N4114-1, the 1N4744A offers higher power but lacks MIL-spec reliability and low-leakage performance, while the CMZ20B provides surface-mount compatibility and automotive qualification but trades hermetic sealing and radiation tolerance for AEC-Q200 compliance.
Availability
1N4114-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite DC-DC converter feedback, and nuclear instrumentation channel reference requiring stable component supply across extended temperature ranges and high-reliability environments.
Supply support for 1N4114-1 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, radiation-hardened, and aerospace-grade components.
The 1N4114-1 belongs to Microsemi's legacy MIL-qualified Zener diode product line, engineered specifically for precision voltage reference and regulation in mission-critical defense, space, and nuclear instrumentation systems.
FAQ
What is the Zener voltage tolerance for the 1N4114-1?
The 1N4114-1 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 thermal equilibrium at 25 °C with 250 mA test current. The 1N4114-1 does not carry tighter tolerance suffixes (e.g., 'C' for 2% or 'D' for 1%) in its base nomenclature.
Is the 1N4114-1 suitable for surface-mount assembly?
No, the 1N4114-1 is packaged in the axial-leaded DO-35 (DO-204AH) glass case and is designed for through-hole mounting. Surface-mount variants exist in the same family (e.g., 1N4114UR-1 in DO-213AA), but the 1N4114-1 itself requires axial lead insertion and wave or hand soldering. Its 0.2 g weight and 25–38 mm lead length are optimized for leaded board assembly.
What is the maximum reverse leakage current for the 1N4114-1?
The maximum reverse leakage current (IR) for the 1N4114-1 is 0.01 µA at 16.8 V, as specified in the Electrical Characteristics table. This value is measured at 25 °C and reflects the device's ultra-low leakage performance, critical for high-impedance reference divider networks. The 1N4114-1 achieves this via metallurgical bonding and hermetic glass encapsulation.
Does the 1N4114-1 meet RoHS requirements?
The 1N4114-1 is available in RoHS-compliant versions only for commercial-grade units, marked with the "e3" suffix (e.g., 1N4114-1e3). Standard 1N4114-1 units use tin-lead plating and are not RoHS compliant. MIL-spec variants (JAN/JANTX/JANTXV/JANS) retain tin-lead terminations per qualification requirements and are exempt from RoHS under applicable exemptions.
What is the thermal resistance specification for the 1N4114-1?
The 1N4114-1 has a thermal resistance of 250 °C/W junction-to-lead (RθJL) when mounted with 3/8 inch (10 mm) lead length from body, and 300 °C/W junction-to-ambient (RθJA) on FR4 board with specified copper pad geometry. These values govern safe power derating - the 1N4114-1 linearly derates from 500 mW at 25 °C to zero at 175 °C.
1N4114 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
1N4114 FAQ
1.How can I place an order for 1N4114 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4114 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 reliable?
The price and inventory of 1N4114 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4114 is usually 5 days.
3.What payment methods are accepted for 1N4114?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4114 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4114?
1N4114 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4114 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?
For technical support, including 1N4114 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4114 requirements.
6.How does Aetrix verify that 1N4114 is sourced from the original manufacturer or authorized distributors?
All 1N4114 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 meets industry standards.
7.What is the process for return or replacement of 1N4114?
All 1N4114 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4114, 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 part is unused and in its original packaging.
Return procedure for 1N4114:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4114 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…
