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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Microchip Technology 1N4104-1

Name: 1N4104-1
Brand: Microchip Technology
SKU: 1N4104-1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4104-1

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: 1N4104-1.pdf

Description:: DIODE ZENER 10V 500MW DO204AH

Quantity:: RFQ Add To RFQ list

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Inventory:9,881

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Product details

Overview

1N4104-1 from Microsemi is a 500 mW, 10.0 V ±5% metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial package, qualified to MIL-PRF-19500/435 JANTX level. It delivers stable voltage regulation at 250 mA test current with 200 Ω dynamic impedance and +0.080 %/°C temperature coefficient, used in precision reference and power supply feedback circuits.

For engineers reviewing the 1N4104-1 datasheet, 1N4104-1 pinout, 1N4104-1 application, or 1N4104-1 equivalent, this page provides 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 power conditioning.

Technical Context

The 1N4104-1 operates as a reverse-biased voltage reference with a nominal Zener voltage of 10.0 V at 250 mA, exhibiting 200 Ω dynamic impedance (ZZT) and 0.5 µA maximum reverse leakage (IR) at 7.6 V. Its metallurgical bond construction ensures low noise density (1 µV/√Hz typical) and radiation hardness per MicroNote 050.

Thermal performance is defined by R_θJL = 250 °C/W (at 3/8″ lead length), with linear power derating from 500 mW at 25 °C to zero at 175 °C. The device is polarity-marked with cathode band and rated for -65 °C to +175 °C junction/storage temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	10.0 V ±5% at I_ZT = 250 mA - defines precise regulation point for feedback loops and references.
Power Dissipation	500 mW @ T_L = 25 °C - supports stable operation in compact through-hole designs with adequate lead heatsinking.
Dynamic Impedance ZZT	200 Ω max at I_ZT = 250 mA - limits output voltage variation under load transients in regulated supplies.
Reverse Leakage IR	0.5 µA max at V_R = 7.6 V - ensures minimal error current in high-impedance bias networks.
Temp. Coefficient αV_Z	+0.080 %/°C - enables predictable drift compensation in temperature-stable references.
Noise Density ND	1 µV/√Hz typical - critical for low-noise analog references and instrumentation front-ends.
Junction Temp Range	-65 °C to +175 °C - validated for extended environmental operation in defense and space systems.

Pinout & Package

DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction. Cathode indicated by single black band; banded end must be held positive relative to anode for Zener operation. Approximate weight: 0.2 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Reference ground node	Connected to circuit common; forms return path for Zener current in shunt regulation.
Cathode	Regulated output node	Banded terminal; supplies stable 10.0 V when reverse-biased above breakdown threshold.

Key Features

Feature	Design Value
Metallurgical bond construction	Enables low-noise operation (1 µV/√Hz) and radiation hardness per MicroNote 050.
MIL-PRF-19500/435 qualification	Validated to JANTX reliability level for mission-critical aerospace and defense applications.
Hermetic glass DO-35 package	Provides long-term stability and moisture resistance without conformal coating.
Low capacitance	Typical <1.0 pF - minimizes signal coupling and high-frequency instability in RF-adjacent circuits.
ESD robustness	Non-sensitive per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling.

Applications

Avionics Power Reference	Satellite DC-DC Converter Feedback
Use Scenario: Precision 10 V reference in flight control system power monitors requiring long-term stability across thermal cycles. IC Role / Device Role / Timing Role: Shunt voltage reference providing error-signal baseline for isolated DC-DC controller ICs. Use Value: ±5% initial tolerance and +0.080 %/°C TC enable <±1.5% total drift over -55 °C to +125 °C operating range.	Use Scenario: Regulation setpoint in radiation-hardened satellite power bus converters exposed to total ionizing dose. IC Role / Device Role / Timing Role: Primary Zener element in feedback divider network of isolated flyback controller. Use Value: Inherent radiation hardness and JANS-qualified variants support >100 krad(Si) TID tolerance without parameter shift.
Test Equipment Calibration Source	Military Radar Bias Supply
Use Scenario: Stable 10 V source in portable multimeter calibration fixtures used in field maintenance depots. IC Role / Device Role / Timing Role: Primary voltage standard for analog-to-digital converter reference scaling. Use Value: 0.5 µA max reverse leakage at 7.6 V prevents loading errors in high-impedance 12-bit ADC reference paths.	Use Scenario: Gate bias stabilization for GaN HEMT drivers in pulsed radar transmitter modules. IC Role / Device Role / Timing Role: Low-noise Zener clamp protecting gate drive IC inputs from transient overshoot. Use Value: 1 µV/√Hz noise density avoids injection into sensitive RF timing paths during pulse-on periods.

Avionics Power Reference

Satellite DC-DC Converter Feedback

Use Scenario: Precision 10 V reference in flight control system power monitors requiring long-term stability across thermal cycles.

IC Role / Device Role / Timing Role: Shunt voltage reference providing error-signal baseline for isolated DC-DC controller ICs.

Use Value: ±5% initial tolerance and +0.080 %/°C TC enable <±1.5% total drift over -55 °C to +125 °C operating range.

Use Scenario: Regulation setpoint in radiation-hardened satellite power bus converters exposed to total ionizing dose.

IC Role / Device Role / Timing Role: Primary Zener element in feedback divider network of isolated flyback controller.

Use Value: Inherent radiation hardness and JANS-qualified variants support >100 krad(Si) TID tolerance without parameter shift.

Test Equipment Calibration Source

Military Radar Bias Supply

Use Scenario: Stable 10 V source in portable multimeter calibration fixtures used in field maintenance depots.

IC Role / Device Role / Timing Role: Primary voltage standard for analog-to-digital converter reference scaling.

Use Value: 0.5 µA max reverse leakage at 7.6 V prevents loading errors in high-impedance 12-bit ADC reference paths.

Use Scenario: Gate bias stabilization for GaN HEMT drivers in pulsed radar transmitter modules.

IC Role / Device Role / Timing Role: Low-noise Zener clamp protecting gate drive IC inputs from transient overshoot.

Use Value: 1 µV/√Hz noise density avoids injection into sensitive RF timing paths during pulse-on periods.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4740A	10 V ±5%, 1 W rating, DO-41 package, no military qualification.	Commercial industrial supplies only; not suitable for aerospace or radiation environments.	Select when higher power (1 W) is needed and MIL-spec is unnecessary.
1N5240B	10 V ±5%, 500 mW, DO-35, commercial grade only, no MIL-PRF-19500 qualification.	Lacks JANTX-level screening and radiation hardness; limited to benign environments.	Choose for cost-sensitive commercial designs where long-term parametric stability is secondary.

Compared with 1N4104-1, the 1N4740A offers double power but lacks military screening and radiation tolerance, while the 1N5240B matches power and package but omits JANTX validation and hermetic sealing - making 1N4104-1 the sole choice for high-reliability analog references demanding proven field performance.

Availability

1N4104-1 is available at Aetrix Electronics and suitable for avionics power references, satellite DC-DC converter feedback, and test equipment calibration sources requiring stable component supply across extended temperature and radiation environments.

Supply support for 1N4104-1 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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.

The 1N4104-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical systems where parametric stability, low noise, and environmental survivability are non-negotiable.

FAQ

What is the Zener voltage tolerance of the 1N4104-1?

The 1N4104-1 has a nominal Zener voltage of 10.0 V with a standard tolerance of ±5% at 250 mA test current, as specified in the Electrical Characteristics table on page 3 of the T4-LDS-0245-2 datasheet. This tolerance applies to the commercial and JANTX versions unless tighter tolerances (e.g., 2% or 1%) are ordered with suffix codes C or D.

Is the 1N4104-1 suitable for surface-mount applications?

No - the 1N4104-1 is packaged exclusively in the axial-leaded DO-35 (DO-204AH) glass case. Surface-mount alternatives include the 1N4104UR-1 in DO-213AA or 1PMT4104 in DO-216, which share identical electrical specs but differ in mounting configuration and qualification level.

What is the maximum reverse leakage current for the 1N4104-1?

The 1N4104-1 exhibits a maximum reverse leakage current (I_R) of 0.5 µA at V_R = 7.6 V, as confirmed in the Electrical Characteristics table. This low leakage supports high-impedance biasing and minimizes error in precision reference networks.

Does the 1N4104-1 have radiation hardness certification?

Yes - the 1N4104-1 is inherently radiation hard per Microsemi MicroNote 050 due to its metallurgically bonded construction and hermetic glass package. When ordered to JANS level, it undergoes full MIL-PRF-19500/435 screening for total ionizing dose (TID) and displacement damage tolerance.

What is the thermal resistance from junction to lead for the 1N4104-1?

The 1N4104-1 has a junction-to-lead thermal resistance (R_θJL) of 250 °C/W when measured at 3/8″ (10 mm) lead length from the package body, as stated in the Maximum Ratings table. This value assumes standard PCB mounting with tin-lead solder and guides heatsinking requirements for sustained 500 mW operation.

1N4104-1 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):: 10 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 200 Ohms

Current - Reverse Leakage @ Vr:: 500 nA @ 7.6 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)

1N4104-1 FAQ

1.How can I place an order for 1N4104-1 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4104-1 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 1N4104-1 reliable?

The price and inventory of 1N4104-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4104-1 is usually 5 days.

3.What payment methods are accepted for 1N4104-1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4104-1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4104-1?

1N4104-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4104-1 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 1N4104-1?

For technical support, including 1N4104-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4104-1 requirements.

6.How does Aetrix verify that 1N4104-1 is sourced from the original manufacturer or authorized distributors?

All 1N4104-1 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 1N4104-1 meets industry standards.

7.What is the process for return or replacement of 1N4104-1?

All 1N4104-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4104-1, 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 1N4104-1 part is unused and in its original packaging.

Return procedure for 1N4104-1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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