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Microchip Technology 1N4111
- Part No.:
- 1N4111
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4111.pdf
- Description:
- DIODE ZENER 17V 400MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,422
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Product details
Overview
1N4111 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 dynamic impedance of 100 Ω at 250 mA and temperature coefficient of +0.090 %/°C - used for precision voltage regulation in aerospace power conditioning circuits.
For engineers reviewing the 1N4111 datasheet, 1N4111 pinout, 1N4111 application, or 1N4111 equivalent, key selection criteria include Zener voltage tolerance, junction-to-lead thermal resistance (250 °C/W), noise density (1 µV/√Hz), max reverse current (0.05 µA at 13.0 V), and JANTXV qualification for high-reliability environments.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with Zener test current fixed at 250 mA and specified regulation over -65 °C to +175 °C junction temperature range. Its metallurgical bond construction ensures stable long-term voltage drift under thermal cycling.
The 1N4111 exhibits low noise density (1 µV/√Hz) and minimal capacitance (typical <2 pF at 17 V), making it suitable for low-noise analog references and precision biasing where spectral purity and fast transient response are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 17.0 V ±5% at 250 mA - defines stable regulation point for feedback loops in DC-DC converters. |
| Power Dissipation | 500 mW @ 25 °C - supports continuous operation up to 13.0 mA at full rated voltage before derating begins at 50 °C. |
| Dynamic Impedance ZZT | 100 Ω @ 250 mA - ensures <1.7 V output variation across 10 mA load current change. |
| Temp Coefficient αVZ | +0.090 %/°C - contributes ~15 mV/°C drift near room temperature, critical for wide-temperature-range instrumentation. |
| Max Reverse Current IR | 0.05 µA @ 13.0 V - enables ultra-low leakage bias networks in high-impedance sensor interfaces. |
| Noise Density ND | 1 µV/√Hz @ 250 mA - meets low-noise requirements for precision ADC reference buffers and op-amp biasing. |
| Junction Temp Range | -65 °C to +175 °C - validated for extended operation in avionics, downhole, and military control systems. |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode band marking; leads are tin-lead or RoHS-compliant matte tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit common; establishes reference potential for regulated output at cathode. |
| Cathode | Regulated output terminal / Zener breakdown anode | Banded end; supplies stable 17.0 V when reverse biased - serves as voltage source for feedback dividers or bias rails. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk during thermal shock, ensuring >10,000 cycles at -55/+125 °C per MIL-STD-883. |
| JANTXV qualification | Validated to MIL-PRF-19500/435 Level JANTXV - includes lot acceptance testing, burn-in, and radiation hardness per MicroNote 050. |
| Low noise density | 1 µV/√Hz enables use in 16-bit+ data acquisition front-ends without degrading SNR below 90 dB. |
| Hermetic glass seal | Prevents moisture ingress and parameter shift over 20+ years in sealed enclosures - critical for satellite power subsystems. |
| Minimal capacitance | Typical <2 pF at 17 V allows stable operation above 100 MHz in RF detector bias networks. |
Applications
| Aerospace Power Conditioning | Precision Instrumentation Biasing |
|---|---|
Use Scenario: Regulating reference voltage for isolated DC-DC converter feedback in satellite power management units. IC Role / Device Role / Timing Role: Zener reference diode providing stable 17.0 V input to error amplifier in closed-loop regulation. Use Value: JANTXV qualification and -65 °C to +175 °C operation ensure uninterrupted regulation during orbital thermal cycling. | Use Scenario: Generating low-drift bias for high-gain transimpedance amplifiers in radiation detection sensors. IC Role / Device Role / Timing Role: Low-noise voltage reference establishing photodiode bias point with sub-µV/√Hz contribution. Use Value: 1 µV/√Hz noise density preserves signal integrity in femtoamp-level current measurements. |
| Military Avionics Voltage Reference | Industrial Process Controller Calibration |
Use Scenario: Providing traceable voltage standard for self-test calibration of flight control system analog I/O modules. IC Role / Device Role / Timing Role: Precision Zener element in ratiometric reference chain for 24-bit SAR ADCs. Use Value: ±5% initial tolerance and +0.090 %/°C TC enable <±0.5% total error over -40/+85 °C operating range. | Use Scenario: Stabilizing setpoint voltage in PID loop controllers for chemical reactor temperature regulation. IC Role / Device Role / Timing Role: Temperature-compensated Zener regulator supplying reference to DAC output buffer. Use Value: Hermetic DO-35 package prevents long-term drift in humid industrial environments (>95% RH). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4111US | Same electrical specs but in surface-mount DO-213AA package; no axial leads. | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or high-vibration mechanical mounting. | Select 1N4111US only when board space constraints mandate SMT and vibration environment permits. |
| 1N4111-1 | Identical specifications and DO-35 packaging; "-1" suffix denotes JAN/JANTXV qualification per MIL-PRF-19500/435. | No functional difference; "-1" version is the qualified military-grade part - same pinout, same performance. | Choose 1N4111-1 for programs requiring formal qualification documentation and lot traceability. |
Compared with 1N4111US and 1N4111-1, the base 1N4111 offers identical Zener regulation performance in DO-35 form but lacks formal military qualification documentation and SMT compatibility - optimal for commercial-grade prototypes and cost-sensitive production where full MIL-spec traceability is not mandated.
Availability
1N4111 is available at Aetrix Electronics and suitable for aerospace power conditioning, precision instrumentation biasing, and military avionics voltage reference applications requiring stable component supply with guaranteed long-term continuity.
Supply support for 1N4111 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 belongs to Microsemi's legacy MIL-qualified Zener diode family engineered for voltage regulation in mission-critical systems where parameter stability under extreme thermal, radiation, and mechanical stress is non-negotiable.
FAQ
What is the Zener voltage tolerance for 1N4111?
The 1N4111 has a nominal Zener voltage of 17.0 V with a standard tolerance of ±5% at 250 mA test current, as defined in the JEDEC-registered electrical characteristics table. This tolerance applies to the commercial-grade version; tighter tolerances (2% or 1%) require alternate part numbers with C or D suffixes.
Is 1N4111 qualified to military standards?
Yes, the 1N4111 is available in JANTXV-qualified versions (e.g., 1N4111-1) compliant with MIL-PRF-19500/435, including full lot traceability, burn-in, and environmental stress screening. The base 1N4111 part number refers to the commercial-grade variant unless otherwise specified with reliability-level suffixes.
What is the maximum reverse leakage current for 1N4111?
The 1N4111 specifies a maximum reverse current (IR) of 0.05 µA at 13.0 V (75% of VZ), measured at 25 °C. This ultra-low leakage supports high-impedance bias networks and minimizes power loss in battery-powered instrumentation using the 1N4111 as a reference source.
Does 1N4111 have low-noise performance?
Yes, the 1N4111 delivers 1 µV/√Hz noise density at 250 mA, verified per Microsemi's noise measurement methodology (1 kHz–3 kHz bandpass). This makes the 1N4111 suitable for low-noise analog circuits such as precision ADC references and low-current op-amp biasing where spectral purity is essential.
What package type does 1N4111 use?
The 1N4111 uses the hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode band marking. Lead finish is tin-lead or RoHS-compliant matte tin (commercial grade only), and the package is rated for soldering at 260 °C for 10 seconds per MIL-STD-750 method 2026.
1N4111 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 17 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12.92 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4111 FAQ
1.How can I place an order for 1N4111 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4111 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 reliable?
The price and inventory of 1N4111 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4111 is usually 5 days.
3.What payment methods are accepted for 1N4111?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4111 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4111?
1N4111 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4111 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?
For technical support, including 1N4111 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4111 requirements.
6.How does Aetrix verify that 1N4111 is sourced from the original manufacturer or authorized distributors?
All 1N4111 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 meets industry standards.
7.What is the process for return or replacement of 1N4111?
All 1N4111 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4111, 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 part is unused and in its original packaging.
Return procedure for 1N4111:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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