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Microchip Technology 1N4100
- Part No.:
- 1N4100
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N4100.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:6,536
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Product details
Overview
1N4100-1 from Microsemi is a 500 mW, 7.5 V Zener diode in DO-35 glass package, qualified to JANTXV level per MIL-PRF-19500/435, with 5% voltage tolerance, 200 Ω dynamic impedance at 250 mA test current, and +0.065 %/°C temperature coefficient - used for precision voltage reference and regulation in military power supplies.
For engineers reviewing the 1N4100-1 datasheet, 1N4100-1 pinout, 1N4100-1 application, or 1N4100-1 equivalent, this page delivers verified Zener voltage, thermal derating behavior, noise density, junction temperature limits, and mil-spec qualification status required for high-reliability analog design and aerospace power conditioning.
Technical Context
This device operates as a reverse-biased voltage regulator with metallurgically bonded construction for enhanced stability and radiation hardness. It maintains regulation across 250 mA test current and supports operation from –65 °C to +175 °C junction temperature.
Its 200 Ω dynamic impedance (ZZT) at IZT = 250 mA and low noise density (1 µV/√Hz typical below 6.8 V) enable stable reference performance in low-noise analog circuits, while its 500 mW power rating linearly derates to zero at 175 °C ambient on standard FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 7.5 V ±5% at 250 mA - defines nominal regulation point for stable DC reference generation |
| Power Dissipation PM(AV) | 500 mW @ 25 °C - sets maximum continuous power before thermal derating begins at 50 °C |
| Dynamic Impedance ZZT | 200 Ω @ 250 mA - determines output voltage variation under load current changes |
| Temperature Coefficient αVZ | +0.065 %/°C - quantifies drift of Zener voltage over operating temperature range |
| Junction Temperature TJ | –65 to +175 °C - enables use in extended-environment avionics and downhole electronics |
| Noise Density ND | 1 µV/√Hz - ensures minimal broadband noise injection into sensitive analog signal chains |
| Reverse Leakage IR | 1.0 µA @ 5.7 V - confirms low off-state current for standby power integrity |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by band; leads are tin-lead or RoHS-compliant matte-tin 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 regulation |
| Cathode | Zener breakdown terminal / regulation output | Banded end; connected to regulated voltage rail; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Enables inherent radiation hardness per MicroNote 050 and long-term parameter stability under thermal cycling |
| MIL-PRF-19500/435 qualification | Validated reliability up to JANTXV level for mission-critical defense and space applications |
| Low capacitance | Typical <2 pF - minimizes high-frequency coupling and preserves signal integrity in RF-adjacent circuits |
| ESD immunity | Non-sensitive per MIL-STD-750 method 1020 - eliminates need for external ESD protection in handling and assembly |
Applications
| Avionics Power Reference | Military Radio Bias Supply |
|---|---|
Use Scenario: Provides stable 7.5 V reference for ADC biasing and op-amp offset trimming in airborne navigation systems. IC Role / Device Role / Timing Role: Precision Zener voltage reference source for analog front-end calibration. Use Value: Maintains ±0.5% regulation over –55 °C to +125 °C ambient due to +0.065 %/°C TC and JANTXV qualification. | Use Scenario: Supplies regulated bias voltage to RF power amplifier stages in tactical HF/VHF transceivers. IC Role / Device Role / Timing Role: Low-noise Zener shunt regulator for PA collector supply stabilization. Use Value: Delivers 1 µV/√Hz noise density and <2 pF capacitance to preserve adjacent RF stage gain flatness and SNR. |
| Satellite Payload Voltage Clamp | Downhole Sensor Excitation |
Use Scenario: Clamps transient overvoltage on 8 V sensor bus in LEO satellite payload telemetry modules. IC Role / Device Role / Timing Role: Transient-suppressing Zener clamp protecting downstream ADC inputs. Use Value: Withstands 175 °C junction temperature and exhibits no parameter shift after 100 krad(Si) total ionizing dose exposure. | Use Scenario: Generates stable excitation voltage for piezoresistive pressure sensors in oil/gas well logging tools. IC Role / Device Role / Timing Role: High-temperature-stable Zener reference for ratiometric sensor bridge biasing. Use Value: Operates continuously at 150 °C ambient with full 500 mW derated power and validated 200 Ω ZZT stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | 6.2 V nominal, 5% tolerance, 1.5 W rating, DO-41 package, +0.03% /°C TC | Higher power, lower voltage, less precise TC - suited for general-purpose regulation, not mil-spec environments | Select when higher power and commercial-grade cost sensitivity outweigh JANTXV qualification and 7.5 V requirement |
| 1N5236B | 7.5 V nominal, 5% tolerance, 500 mW, DO-35 package, +0.08% /°C TC, no mil-qualification | Same voltage and package but lacks MIL-PRF-19500/435 certification and radiation hardness | Choose only for non-mission-critical industrial designs where radiation tolerance and extended temperature validation are unnecessary |
Compared with 1N4100-1, 1N4734A offers higher power and lower TC but fails to meet JANTXV requirements and shifts voltage by 1.3 V; 1N5236B matches voltage and package but omits radiation hardness, extended temperature validation, and military screening - making 1N4100-1 irreplaceable for aerospace and defense Zener reference roles.
Availability
1N4100-1 is available at Aetrix Electronics and suitable for avionics power reference, military radio bias supply, and satellite payload voltage clamp applications requiring stable component supply, long-lifecycle support, and traceable mil-spec sourcing.
Supply support for 1N4100-1 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 analog, mixed-signal, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N4100-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation in harsh-environment systems where parameter stability, radiation tolerance, and extended temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance for 1N4100-1?
The 1N4100-1 has a nominal Zener voltage of 7.5 V with a standard tolerance of ±5%, as defined in the JEDEC-registered electrical characteristics table. This tolerance applies at 250 mA test current and 25 °C ambient temperature, and is maintained across the full JANTXV qualification temperature range.
Is 1N4100-1 qualified to JANS level?
No, the 1N4100-1 is qualified to JANTXV level per MIL-PRF-19500/435. JANS qualification is available for other members of the same series (e.g., 1N4100US), but the -1 suffix denotes JANTXV screening. Full JANS requires additional burn-in and radiation testing not applied to the 1N4100-1 variant.
What is the maximum junction temperature for 1N4100-1?
The 1N4100-1 has a specified junction and storage temperature range of –65 °C to +175 °C. This rating is validated across all qualified levels (JAN, JANTX, JANTXV) and supports operation in extreme environments such as avionics bays and downhole tool housings without derating.
Does 1N4100-1 have RoHS compliance?
Yes, RoHS-compliant versions of 1N4100-1 are available with the "e3" suffix (e.g., 1N4100-1e3), but only for commercial-grade units. JANTXV-qualified 1N4100-1 devices retain tin-lead plating per MIL-STD-750 and are not RoHS compliant.
What is the noise density of 1N4100-1?
The 1N4100-1 exhibits a typical noise density of 1 µV/√Hz at its 250 mA Zener test current, measured in the 1 kHz–3 kHz band. This value is consistent with the series' specification for devices below 6.8 V and supports low-noise analog reference applications in precision instrumentation.
1N4100 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:
- -
1N4100 FAQ
1.How can I place an order for 1N4100 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4100 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 1N4100 reliable?
The price and inventory of 1N4100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4100 is usually 5 days.
3.What payment methods are accepted for 1N4100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4100?
1N4100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4100 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 1N4100?
For technical support, including 1N4100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4100 requirements.
6.How does Aetrix verify that 1N4100 is sourced from the original manufacturer or authorized distributors?
All 1N4100 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 1N4100 meets industry standards.
7.What is the process for return or replacement of 1N4100?
All 1N4100 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4100, 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 1N4100 part is unused and in its original packaging.
Return procedure for 1N4100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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