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Microchip Technology 1N4115
- Part No.:
- 1N4115
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N4115.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:9,673
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Product details
Overview
1N4115 from Microsemi is a 500 mW, 22 V Zener diode in DO-35 glass package, qualified to JANS level per MIL-PRF-19500/435. It delivers ±5% voltage tolerance, 150 Ω dynamic impedance at 250 mA test current, and operates across –65 °C to +175 °C junction temperature for high-reliability voltage regulation in aerospace power supplies.
For engineers reviewing the 1N4115 datasheet, 1N4115 pinout, 1N4115 application, or 1N4115 equivalent, this part supports precision reference design, radiation-hardened analog circuits, and military-grade power rail stabilization where low noise density (1 µV/√Hz), hermetic sealing, and thermal stability are critical selection criteria.
Technical Context
This Zener diode uses metallurgical bonding to ensure stable breakdown characteristics under thermal cycling and radiation exposure. Its 22 V nominal Zener voltage is specified at 250 mA test current (IZT), with dynamic impedance measured at 150 Ω using 10% rms ac modulation superimposed on IZT.
The device exhibits a +0.090 %/°C temperature coefficient and maintains ≤0.01 µA reverse leakage at VR = 16.8 V. Its noise density is 1 µV/√Hz - consistent with low-voltage Zeners in the series - and capacitance remains minimal (<1.5 pF) per typical characterization curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 22.0 V at 250 mA - defines precise regulation point for feedback loops and reference rails |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact axial-leaded layouts with linear derating above 50 °C |
| Dynamic Impedance ZZT | 150 Ω at IZT - ensures tight voltage regulation under varying load currents |
| Reverse Leakage IR | ≤0.01 µA at 16.8 V - minimizes standby current in precision bias networks |
| Temp Coefficient αVZ | +0.090 %/°C - enables predictable drift compensation in wide-temperature environments |
| Noise Density ND | 1 µV/√Hz - critical for low-noise analog references and sensor excitation circuits |
| Junction Temp Range | –65 °C to +175 °C - validated for extended-range aerospace and downhole applications |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Hermetically sealed, tin-lead or RoHS-compliant matte-tin plating, ~0.2 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node; reverse-biased during regulation |
| Cathode | Zener breakdown terminal / regulation output | Banded end; connected to regulated voltage rail; referenced to anode |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures mechanical and thermal stability of Zener junction under shock, vibration, and thermal cycling |
| MIL-PRF-19500/435 qualification | Validated reliability up to JANS level for spaceflight, avionics, and nuclear instrumentation |
| Low noise density | 1 µV/√Hz enables use in high-resolution ADC references and precision op-amp biasing |
| Hermetic glass seal | Prevents moisture ingress and parameter drift over decades in harsh environments |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for TID > 100 krad(Si) |
Applications
| Aerospace Power Reference | Nuclear Instrumentation Bias |
|---|---|
Use Scenario: Stable 22 V reference for DC-DC converter feedback in satellite power management units. IC Role / Device Role / Timing Role: Zener regulator providing primary voltage reference for error amplifiers and PWM controllers. Use Value: JANS qualification and –65 °C to +175 °C operation ensure uninterrupted regulation during orbital thermal extremes. | Use Scenario: Bias supply for radiation detector preamplifiers in reactor monitoring systems. IC Role / Device Role / Timing Role: Low-noise, radiation-hardened voltage reference stabilizing front-end gain stages. Use Value: 1 µV/√Hz noise density and inherent TID tolerance maintain signal integrity in high-radiation zones. |
| Avionics Sensor Excitation | Downhole Telemetry Regulator |
Use Scenario: Excitation voltage source for strain gauge bridges in flight control surface transducers. IC Role / Device Role / Timing Role: Precision Zener shunt regulator delivering stable excitation independent of supply ripple. Use Value: ±5% tolerance and +0.090 %/°C TC enable calibrated output across –55 °C to +125 °C operational range. | Use Scenario: Local 22 V rail regulation for pressure/temperature sensor electronics in oil well logging tools. IC Role / Device Role / Timing Role: High-temp Zener regulator maintaining reference accuracy at 175 °C junction temperature. Use Value: Hermetic DO-35 package and full MIL-spec thermal rating prevent parametric shift in geothermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4748A | 22 V, 1 W, DO-41, ±5%, 20 Ω ZZT, +0.085 %/°C TC | Higher power, lower impedance, commercial-only qualification | Select when higher power margin and lower dynamic impedance are required, and MIL-spec is not mandated |
| 1N5248B | 22 V, 500 mW, DO-35, ±5%, 35 Ω ZZT, +0.085 %/°C TC | Lower ZZT, commercial grade only, no MIL qualification | Choose for cost-sensitive industrial designs where radiation hardness and extended temp range are unnecessary |
Compared with 1N4115, the 1N4748A offers greater power headroom but lacks hermetic sealing and radiation tolerance; the 1N5248B provides lower impedance but omits MIL-PRF-19500/435 validation and high-temp reliability - making 1N4115 uniquely suited for mission-critical environments.
Availability
1N4115 is available at Aetrix Electronics and suitable for aerospace power reference, nuclear instrumentation bias, and avionics sensor excitation requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N4115 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) designs high-reliability semiconductors for aerospace, defense, and industrial markets, emphasizing radiation tolerance, extended temperature operation, and MIL-spec compliance.
The 1N4115 belongs to Microsemi's legacy 500 mW metallurgically bonded Zener family, engineered specifically for voltage regulation in safety-critical systems where long-term parametric stability under extreme stress is mandatory.
FAQ
What is the Zener voltage tolerance for 1N4115?
The 1N4115 has a nominal Zener voltage of 22.0 V with a standard tolerance of ±5%, as defined in the JEDEC-registered electrical characteristics table. This tolerance applies at 25 °C with the device in thermal equilibrium and is consistent across JAN, JANTX, JANTXV, and JANS reliability levels unless otherwise marked with C (±2%) or D (±1%) suffixes - which do not apply to the base 1N4115 part number.
Is 1N4115 suitable for high-temperature operation?
Yes, the 1N4115 supports continuous operation from –65 °C to +175 °C junction temperature, with power dissipation linearly derated from 500 mW at 25 °C to zero at 175 °C. Its DO-35 glass package and metallurgical bond construction are validated for sustained performance in downhole, engine bay, and space thermal environments - confirmed in Microsemi's T4-LDS-0245-2 specification.
Does 1N4115 have radiation hardness certification?
Yes, the 1N4115 is inherently radiation-hardened per Microsemi MicroNote 050 and qualified to JANS level under MIL-PRF-19500/435. It is documented for total ionizing dose (TID) tolerance exceeding 100 krad(Si), making it suitable for satellite, nuclear, and high-altitude avionics applications without additional shielding or derating.
What is the maximum reverse leakage current for 1N4115?
The maximum reverse leakage current (IR) for 1N4115 is 0.01 µA at VR = 16.8 V, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This ultra-low leakage supports high-impedance bias networks and precision reference designs where standby current must remain below 10 nA.
Can 1N4115 be used in surface-mount designs?
No - the standard 1N4115 is supplied in the axial-leaded DO-35 (DO-204AH) glass package. Surface-mount variants exist for other members of the family (e.g., 1N4115UR-1 in DO-213AA), but the base 1N4115 part number refers exclusively to the through-hole DO-35 configuration per Microsemi's nomenclature and packaging documentation.
1N4115 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:
- -
1N4115 FAQ
1.How can I place an order for 1N4115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4115 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 1N4115 reliable?
The price and inventory of 1N4115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4115 is usually 5 days.
3.What payment methods are accepted for 1N4115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4115?
1N4115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4115 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 1N4115?
For technical support, including 1N4115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4115 requirements.
6.How does Aetrix verify that 1N4115 is sourced from the original manufacturer or authorized distributors?
All 1N4115 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 1N4115 meets industry standards.
7.What is the process for return or replacement of 1N4115?
All 1N4115 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4115, 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 1N4115 part is unused and in its original packaging.
Return procedure for 1N4115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4115 Tags
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