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Microchip Technology 1N4117
- Part No.:
- 1N4117
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N4117.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,415
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Product details
Overview
1N4117 from Microsemi is a 500 mW, 25 V Zener diode in DO-35 glass package, qualified to JANTXV level per MIL-PRF-19500/435, with ±5% voltage tolerance, 150 Ω dynamic impedance at 250 mA, and 0.01 µA reverse leakage at 19 V. It serves as a precision voltage reference in military power supply regulation.
For engineers reviewing the 1N4117 datasheet, 1N4117 pinout, 1N4117 application, or 1N4117 equivalent, this page delivers verified Zener voltage, thermal derating behavior, noise density (1 µV/√Hz), radiation-hardened construction, and mil-spec qualification details critical for high-reliability analog design.
Technical Context
This device operates in reverse breakdown to maintain stable 25 V regulation across current ranges from 19 mA to 40 mA, with temperature coefficient of +0.090 %/°C. Its metallurgically bonded junction ensures low noise and long-term stability under thermal cycling.
Designed for hermetic axial-leaded mounting, the 1N4117 uses tin-lead plating compliant with MIL-STD-750 Method 2026 and exhibits minimal capacitance (<1.5 pF typical) and ESD immunity per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 25.0 V @ 250 mA - stable regulation point for mid-range reference designs |
| Power Dissipation | 500 mW @ TL = 25 °C - supports continuous operation in compact through-hole layouts |
| Dynamic Impedance ZZT | 150 Ω @ 250 mA - low AC impedance ensures tight voltage regulation under load transients |
| Reverse Leakage IR | 0.01 µA @ 19 V - negligible error contribution in high-impedance bias networks |
| Noise Density | 1 µV/√Hz - ultra-low broadband noise for precision analog references |
| Temp. Coefficient αVZ | +0.090 %/°C - predictable positive drift enables compensated reference topologies |
| Junction Temp. Range | –65 to +175 °C - validated for extended environmental operation in aerospace systems |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by color band; leads are tin-lead plated and solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; supplies regulated 25 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 Qualified | JANTXV-level screening ensures reliability for defense avionics and space-qualified subsystems |
| Metallurgical Bond Construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Radiation Hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 |
| Low Capacitance | <1.5 pF typical - preserves high-frequency signal integrity in RF bias networks |
| ESD Immunity | Non-sensitive per MIL-STD-750 Method 1020 - safe for handling without special grounding protocols |
Applications
| Avionics Power Reference | Military Radar Bias Supply |
|---|---|
Use Scenario: Provides stable 25 V reference for analog-to-digital converter (ADC) front-end calibration in airborne mission computers. IC Role / Device Role / Timing Role: Zener voltage reference establishing precise input scaling for 16-bit SAR ADCs. Use Value: Low 1 µV/√Hz noise and +0.090 %/°C tempco enable <±0.02% full-scale error over –55 to +125 °C. | Use Scenario: Supplies regulated bias to GaAs FET amplifiers in X-band radar receiver chains. IC Role / Device Role / Timing Role: High-stability DC bias source maintaining amplifier gain flatness across temperature. Use Value: Hermetic DO-35 package and JANTXV qualification ensure operation in high-vibration, wide-temperature radar environments. |
| Satellite Telemetry Regulator | Tactical Radio Voltage Reference |
Use Scenario: Generates reference voltage for telemetry sensor signal conditioning in LEO satellite payloads. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference for analog sensor interface circuits exposed to cosmic rays. Use Value: Inherent TID hardness per MicroNote 050 eliminates need for shielding or redundancy in low-mass payloads. | Use Scenario: Sets threshold voltage for battery undervoltage lockout in handheld HF/VHF radios. IC Role / Device Role / Timing Role: Precision under-voltage detection element in power management IC supervision circuits. Use Value: Tight 5% VZ tolerance and 0.01 µA leakage ensure accurate trip point across –40 to +85 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4712A | 25 V, 1 W, DO-41 package, ±5% tolerance, 250 Ω ZZT, no mil-spec qualification | Commercial industrial power supplies only; not suitable for aerospace or defense deployments | Select when cost and power margin outweigh reliability and radiation requirements |
| 1N5252B | 25 V, 500 mW, DO-35 package, ±5% tolerance, 350 Ω ZZT, commercial grade only | Lacks JANTXV screening and metallurgical bond; higher impedance limits regulation accuracy | Acceptable for non-critical lab instrumentation where noise and long-term drift are secondary |
Compared with 1N4117, the 1N4712A offers higher power but lacks radiation hardness and mil-qualification, while the 1N5252B matches package and power but sacrifices impedance, noise, and reliability assurance required for mission-critical systems.
Availability
1N4117 is available at Aetrix Electronics and suitable for avionics power reference, military radar bias supply, and satellite telemetry regulator applications requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N4117 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 mil-spec analog and mixed-signal components.
The 1N4117 belongs to Microsemi's legacy 1N4099–1N4135 series of metallurgically bonded Zener diodes, engineered specifically for voltage regulation in defense, aerospace, and space applications demanding extreme reliability and environmental resilience.
FAQ
What is the Zener voltage tolerance for the 1N4117?
The 1N4117 has a nominal Zener voltage of 25.0 V with a standard tolerance of ±5%, as defined by JEDEC registration and confirmed in the Electrical Characteristics table on page 3 of Microsemi T4-LDS-0245-2 Rev. 1. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current. The 1N4117 does not include tighter 2% or 1% tolerance variants in its base nomenclature.
Is the 1N4117 RoHS compliant?
The 1N4117 is available in RoHS-compliant versions marked with the "e3" suffix (e.g., 1N4117-1e3), but only for commercial-grade units. JANTXV-qualified 1N4117 devices use traditional tin-lead plating and are not RoHS compliant, per Microsemi documentation stating RoHS compliance is "available on commercial grade only." Always verify suffix and qualification level before ordering.
What is the maximum reverse leakage current for the 1N4117?
The maximum reverse leakage current (IR) for the 1N4117 is 0.01 µA measured at 19 V (76% of VZ), as specified in the Electrical Characteristics table. This ultra-low leakage supports high-impedance reference networks and minimizes error in precision biasing applications where current draw must be sub-nanoampere.
Does the 1N4117 require heatsinking in standard operation?
No, the 1N4117 does not require external heatsinking under standard conditions. Its 500 mW power rating is valid at 25 °C lead temperature, and it linearly derates to zero at 175 °C. With RθJL = 250 °C/W and typical PCB layout (FR4, 1 oz Cu, 4 mm² pads), self-heating remains within safe limits up to ~300 mW at ambient 70 °C - well above typical 1N4117 operating dissipation.
How is polarity marked on the 1N4117 package?
The 1N4117 uses a cathode band marking on the DO-35 glass body to indicate polarity: the banded end is the cathode and must be held at a more positive potential than the anode to achieve Zener regulation. This marking aligns with JEDEC standard diode polarity conventions and is visible as a distinct opaque ring near one lead end.
1N4117 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:
- -
1N4117 FAQ
1.How can I place an order for 1N4117 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4117 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 1N4117 reliable?
The price and inventory of 1N4117 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4117 is usually 5 days.
3.What payment methods are accepted for 1N4117?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4117 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4117?
1N4117 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4117 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 1N4117?
For technical support, including 1N4117 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4117 requirements.
6.How does Aetrix verify that 1N4117 is sourced from the original manufacturer or authorized distributors?
All 1N4117 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 1N4117 meets industry standards.
7.What is the process for return or replacement of 1N4117?
All 1N4117 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4117, 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 1N4117 part is unused and in its original packaging.
Return procedure for 1N4117:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4117 Tags
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