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Microchip Technology 1N4101
- Part No.:
- 1N4101
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N4101.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:9,681
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Product details
Overview
1N4101 from Microsemi is a 500 mW, 8.2 V Zener diode in DO-35 glass axial package, qualified to JANTX level per MIL-PRF-19500/435. It delivers ±5% voltage tolerance, 200 Ω dynamic impedance at 250 mA test current, and operates across –65 °C to +175 °C for precision voltage regulation in high-reliability analog circuits.
For engineers reviewing the 1N4101 datasheet, 1N4101 pinout, 1N4101 application, or 1N4101 equivalent, this part serves as a hermetically sealed, low-noise (1 µV/√Hz), metallurgically bonded Zener regulator suitable for aerospace power conditioning, military reference supplies, and radiation-hardened instrumentation where stable reverse-biased breakdown performance is critical.
Technical Context
The 1N4101 operates in reverse-bias breakdown mode with a nominal Zener voltage of 8.2 V at 250 mA test current (IZT), exhibiting a positive temperature coefficient of +0.070 %/°C. Its metallurgical bond construction ensures low noise density and stable regulation under thermal cycling.
It features 200 Ω dynamic impedance (ZZT) at IZT, maximum reverse leakage of 0.5 µA at 5.7 V (VR), and supports up to 40 mA maximum Zener current (IZM). Thermal resistance junction-to-lead is 250 °C/W with 3/8″ lead length, enabling reliable operation at elevated ambient temperatures when properly mounted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V at 250 mA - precise reference point for regulated supply rails and analog biasing |
| Power Dissipation | 500 mW at 25 °C - supports continuous regulation in compact through-hole designs |
| Dynamic Impedance (ZZT) | 200 Ω at IZT - low AC impedance ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.5 µA at 5.7 V - ultra-low leakage preserves accuracy in high-impedance reference networks |
| Temp. Coefficient (αVZ) | +0.070 %/°C - predictable positive drift enables compensation in multi-diode references |
| Noise Density (ND) | 1 µV/√Hz - exceptionally low broadband noise for precision measurement front-ends |
| Junction Temp. Range | –65 °C to +175 °C - validated for extended-range military and space-grade applications |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package: hermetically sealed, cathode indicated by single black band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026. Weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal / reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode (banded end) | Zener regulation terminal / output reference node | Provides stable 8.2 V relative to anode when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and long-term bias stress |
| MIL-PRF-19500/435 qualification (JANTX) | Validated reliability for defense electronics with full lot traceability and screening |
| Low noise density (1 µV/√Hz) | Enables use in low-level signal conditioning without added filtering or post-regulation cleanup |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter drift over decades in harsh environments |
| Radiation hardness (per MicroNote 050) | Retains electrical parameters after exposure to total ionizing dose ≥ 100 krad(Si) |
Applications
| Aerospace Power Conditioning | Military Reference Supplies |
|---|---|
Use Scenario: Regulating auxiliary rail voltages in satellite power distribution units exposed to thermal vacuum and radiation. IC Role / Device Role / Timing Role: Zener diode providing primary 8.2 V reference for DC-DC converter feedback loops and sensor biasing. Use Value: Stable 8.2 V output with <0.5 µA leakage ensures minimal current draw from limited battery reserves while maintaining regulation across –65 °C to +125 °C operational range. |
Use Scenario: Generating precision voltage references in field-deployable radar receiver front-ends. IC Role / Device Role / Timing Role: Standalone Zener regulator establishing local 8.2 V bias for RF amplifier stages and ADC drivers. Use Value: 1 µV/√Hz noise density prevents degradation of SNR in wideband IF amplifiers; JANTX qualification guarantees performance consistency across production lots. |
| Radiation-Hardened Instrumentation | High-Temperature Industrial Control |
Use Scenario: Providing reference voltage for nuclear reactor monitoring sensors operating inside containment vessels. IC Role / Device Role / Timing Role: Hermetically sealed Zener diode delivering stable 8.2 V reference despite cumulative TID > 100 krad(Si). Use Value: Radiation hardness per MicroNote 050 and 175 °C max junction temperature enable uninterrupted operation during extended in-core deployment. |
Use Scenario: Voltage clamping and regulation in downhole oilfield telemetry modules exposed to 150 °C ambient. IC Role / Device Role / Timing Role: Zener clamp protecting analog input stages from transient overvoltage in high-temp data acquisition systems. Use Value: 200 Ω dynamic impedance and –65 °C to +175 °C rating ensure predictable clamping behavior even after prolonged thermal soak at 150 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | 8.2 V, 1 W, DO-41 package, ±5% tolerance, 15 Ω ZZT, +0.075 %/°C αVZ | Higher power rating but larger footprint; not MIL-qualified; higher noise (~5 µV/√Hz) | Select for commercial industrial designs requiring higher power margin and lower dynamic impedance, where MIL-specification is unnecessary. |
| 1N5233B | 8.2 V, 500 mW, DO-35 package, ±5% tolerance, 30 Ω ZZT, +0.07 %/°C αVZ | Same package and power, but commercial-only; no MIL qualification; lower ZZT but unverified radiation hardness | Choose for cost-sensitive avionics subsystems where full JANTX screening is not mandated but DO-35 form factor is required. |
Compared with 1N4101, the 1N4734A offers higher power and lower impedance but lacks hermetic sealing and radiation tolerance; the 1N5233B matches the package and power but omits military screening and long-term reliability validation-making 1N4101 the sole choice for mission-critical, radiation-exposed, or extended-temperature deployments.
Availability
1N4101 is available at Aetrix Electronics and suitable for aerospace power conditioning, military reference supplies, and radiation-hardened instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N4101 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 aerospace-grade components.
The 1N4101 belongs to Microsemi's legacy MIL-PRF-19500/435-qualified Zener diode family, designed specifically for voltage reference and regulation in defense, space, and nuclear instrumentation where parametric stability under extreme environmental stress is non-negotiable.
FAQ
What is the Zener voltage tolerance for the 1N4101?
The 1N4101 has a nominal Zener voltage of 8.2 V with a standard tolerance of ±5%, as defined in the JEDEC-registered specification and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current (IZT). The 1N4101 does not offer tighter 2% or 1% tolerances-those are reserved for other members of the 1N4099–1N4135 series marked with "C" or "D" suffixes.
Is the 1N4101 RoHS compliant?
The 1N4101 is available in both RoHS-compliant and non-RoHS versions: RoHS compliance is indicated by the "e3" suffix (e.g., 1N4101-1e3), and applies only to commercial-grade units per the nomenclature table on page 2. JANTX-qualified 1N4101 devices are not RoHS compliant, as military screening processes require traditional tin-lead plating per MIL-STD-750.
What is the maximum Zener current (IZM) for the 1N4101?
The maximum Zener current (IZM) for the 1N4101 is 40 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This value corresponds to the current at which the device dissipates its rated 500 mW at 25 °C lead temperature. Above 50 °C, linear derating applies per Figure 2, reducing IZM proportionally until zero at 175 °C.
Does the 1N4101 have a documented radiation hardness specification?
Yes-the 1N4101 inherits radiation hardness characteristics documented in Microsemi MicroNote 050, confirming retention of electrical parameters after exposure to total ionizing dose (TID) ≥ 100 krad(Si). This capability stems from its metallurgically bonded structure and hermetic glass packaging, and is consistent across the entire 1N4099–1N4135 family.
Can the 1N4101 be used in surface-mount designs?
No-the standard 1N4101 is supplied in the axial-leaded DO-35 (DO-204AH) glass package and is not a surface-mount device. However, Microsemi offers functionally equivalent surface-mount variants: the 1N4101UR-1 in DO-213AA and the 1PMT4101 in DO-216 packages. These share identical electrical specs but differ in mounting geometry and qualification level.
1N4101 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:
- -
1N4101 FAQ
1.How can I place an order for 1N4101 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4101 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 1N4101 reliable?
The price and inventory of 1N4101 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4101 is usually 5 days.
3.What payment methods are accepted for 1N4101?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4101 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4101?
1N4101 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4101 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 1N4101?
For technical support, including 1N4101 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4101 requirements.
6.How does Aetrix verify that 1N4101 is sourced from the original manufacturer or authorized distributors?
All 1N4101 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 1N4101 meets industry standards.
7.What is the process for return or replacement of 1N4101?
All 1N4101 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4101, 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 1N4101 part is unused and in its original packaging.
Return procedure for 1N4101:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4101 Tags
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