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Microchip Technology 1N4111-1
- Part No.:
- 1N4111-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4111-1.pdf
- Description:
- DIODE ZENER 17V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,399
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Product details
Overview
1N4111-1 from Microsemi is a 500 mW, 17.0 V ±5% metallurgically bonded glass Zener diode in DO-35 (DO-204AH) package, qualified to JANTXV level per MIL-PRF-19500/435, with 100 Ω dynamic impedance at 250 mA and 0.05 µA reverse leakage at 13.0 V. It regulates voltage across wide current and temperature ranges in precision reference and power supply circuits.
For engineers reviewing the 1N4111-1 datasheet, 1N4111-1 pinout, 1N4111-1 application, or 1N4111-1 equivalent, this page delivers verified Zener voltage, thermal derating behavior, noise density, junction-to-lead thermal resistance, and military qualification status - all critical for high-reliability analog design and aerospace-grade voltage reference selection.
Technical Context
The 1N4111-1 operates as a two-terminal voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond ensures stable Zener voltage under thermal cycling and radiation exposure, supporting operation from –65 °C to +175 °C.
It exhibits +0.090 %/°C temperature coefficient and 1 µV/√Hz typical noise density at 17.0 V, enabling low-drift references in instrumentation and avionics. Power dissipation linearly derates from 500 mW at 25 °C ambient to zero at 175 °C on standard FR4 PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 17.0 V at 250 mA test current - defines precise regulation point for feedback loops and reference generation |
| Power Dissipation | 500 mW at 25 °C, derated linearly to zero at 175 °C - sets maximum continuous bias current in thermal-limited designs |
| Dynamic Impedance ZZT | 100 Ω at 250 mA - determines output voltage variation under load transients in shunt regulator topologies |
| Reverse Leakage IR | 0.05 µA at 13.0 V - ensures minimal error current in high-impedance reference nodes |
| Temp Coefficient αVZ | +0.090 %/°C - quantifies drift magnitude over operating temperature range for stability analysis |
| Noise Density ND | 1 µV/√Hz at 17.0 V - specifies broadband noise floor critical for low-noise analog signal chains |
| Junction Temp Range | –65 °C to +175 °C - enables deployment in extended-environment military and downhole systems |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by black band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; serves as return path for Zener current |
| Cathode (banded end) | Zener regulation terminal / input reference node | Connected to unregulated supply; maintains stable 17.0 V relative to anode during reverse breakdown |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTXV qualification | Validated reliability for aerospace and defense systems requiring screened, high-temperature operation |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and radiation exposure |
| 1 µV/√Hz noise density | Enables use in precision voltage references where sub-microvolt noise impacts ADC accuracy |
| Hermetic glass sealing | Prevents moisture ingress and parameter drift in humid or corrosive environments |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Reduces handling precautions and eliminates need for ESD-protected assembly lines |
Applications
| Aerospace Power Reference | Industrial Sensor Excitation |
|---|---|
Use Scenario: Providing stable 17.0 V reference for analog front-end conditioning in satellite telemetry modules. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for op-amps and ADC drivers. Use Value: JANTXV qualification and –65 °C to +175 °C operation ensure uninterrupted function across orbital thermal cycles. | Use Scenario: Biasing bridge-based pressure transducers in oilfield downhole tools. IC Role / Device Role / Timing Role: Precision excitation source maintaining constant voltage despite battery decay and temperature swings. Use Value: +0.090 %/°C tempco and 100 Ω ZZT limit sensor output drift to <0.2% over –40 °C to +125 °C. |
| Military Radio RF Stage Bias | Avionics Display Backlight Regulation |
Use Scenario: Setting gate bias for GaAs FETs in HF transceiver final amplifiers. IC Role / Device Role / Timing Role: Low-noise DC voltage source stabilizing amplifier quiescent point. Use Value: 1 µV/√Hz noise density prevents AM sideband corruption in narrowband comms channels. | Use Scenario: Regulating LED backlight current in cockpit multifunction displays. IC Role / Device Role / Timing Role: Zener shunt element in constant-current sink configuration. Use Value: Hermetic DO-35 package withstands vibration and humidity without parametric shift over 10-year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | 12 V nominal, 1 W rating, DO-41 package, ±5% tolerance, no military qualification | Higher power but lower voltage; lacks JANTXV screening and radiation hardness | Select when commercial-grade 12 V regulation suffices and thermal margin exceeds 500 mW requirement |
| 1N5247B | 17 V nominal, 500 mW, DO-35, ±5%, commercial-only, no MIL-PRF-19500 qualification | Same voltage and package but unqualified for high-reliability environments | Choose only for cost-sensitive industrial prototypes where military screening is unnecessary |
Compared with 1N4111-1, the 1N4742A offers higher power but lower voltage and no military qualification, while the 1N5247B matches voltage and power but omits JANTXV screening and radiation tolerance - making 1N4111-1 uniquely suitable for mission-critical aerospace voltage references.
Availability
1N4111-1 is available at Aetrix Electronics and suitable for aerospace power references, industrial sensor excitation, military radio RF stage bias, and avionics display backlight regulation requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N4111-1 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N4111-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation in harsh-environment systems where long-term stability and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance for the 1N4111-1?
The 1N4111-1 has a nominal Zener voltage of 17.0 V with ±5% tolerance, consistent with JEDEC-standard 1N-series Zener diodes. This tolerance applies at 250 mA test current and 25 °C ambient temperature, and is confirmed in Microsemi's T4-LDS-0245-2 datasheet revision 1.
Is the 1N4111-1 qualified to military standards?
Yes, the 1N4111-1 is qualified per MIL-PRF-19500/435 at JANTXV reliability level, verified in the official Microsemi datasheet. This includes screening for temperature cycling, mechanical shock, and long-term parametric stability - essential for flight-critical and defense electronics applications.
What is the maximum reverse leakage current for the 1N4111-1?
The 1N4111-1 exhibits a maximum reverse leakage current (IR) of 0.05 µA at 13.0 V, as specified in the Electrical Characteristics table on page 3 of the T4-LDS-0245-2 datasheet. This ultra-low leakage supports high-impedance reference node integrity in precision analog circuits.
Does the 1N4111-1 have radiation hardness?
Yes, the 1N4111-1 is inherently radiation hard, as documented in Microsemi MicroNote 050. Its metallurgically bonded construction and hermetic DO-35 package provide proven resilience against total ionizing dose (TID) and single-event effects - a key reason for its use in satellite and nuclear instrumentation systems.
What is the thermal resistance from junction to lead for the 1N4111-1?
The 1N4111-1 has a junction-to-lead thermal resistance (RθJL) of 250 °C/W when mounted with 3/8 inch (10 mm) lead length from body, per the Maximum Ratings table on page 1 of the T4-LDS-0245-2 datasheet. This value guides heatsinking decisions in high-duty-cycle shunt regulator designs.
1N4111-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 17 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 13 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N4111-1 FAQ
1.How can I place an order for 1N4111-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4111-1 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 1N4111-1 reliable?
The price and inventory of 1N4111-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4111-1 is usually 5 days.
3.What payment methods are accepted for 1N4111-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4111-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4111-1?
1N4111-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4111-1 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 1N4111-1?
For technical support, including 1N4111-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4111-1 requirements.
6.How does Aetrix verify that 1N4111-1 is sourced from the original manufacturer or authorized distributors?
All 1N4111-1 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 1N4111-1 meets industry standards.
7.What is the process for return or replacement of 1N4111-1?
All 1N4111-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4111-1, 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 1N4111-1 part is unused and in its original packaging.
Return procedure for 1N4111-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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