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

Microchip Technology JAN1N4125C-1/TR

Name: JAN1N4125C-1/TR
Brand: Microchip Technology
SKU: JAN1N4125C-1/TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: JAN1N4125C-1/TR

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

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

Datasheet:: JAN1N4125C-1/TR.pdf

Description:: DIODE ZENER 47V DO204AH

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Product details

Overview

JAN1N4125C-1/TR from Microsemi is a 47 V, 2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANTXV level per MIL-PRF-19500/435, used for precision voltage regulation in military and aerospace power supply reference circuits.

For engineers reviewing the JAN1N4125C-1/TR datasheet, JAN1N4125C-1/TR pinout, JAN1N4125C-1/TR application, or JAN1N4125C-1/TR equivalent, key selection criteria include Zener voltage tolerance (±2%), noise density (≤1 µV/√Hz), dynamic impedance (250 Ω @ 250 mA), temperature coefficient (+0.095 %/°C), and JANTXV reliability qualification.

Technical Context

This device operates as a reverse-biased Zener regulator with a nominal breakdown voltage of 47 V at 250 mA test current, featuring low noise density (1 µV/√Hz) and stable regulation across -65 °C to +175 °C junction temperature range.

Its metallurgical bond construction ensures high reliability under thermal cycling and radiation exposure, while the DO-35 axial-glass package provides hermetic sealing and compatibility with MIL-STD-750 solderability testing.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	47 V ±2% at 250 mA - enables precise 47 V reference generation with tight tolerance for critical analog monitoring.
Power Dissipation	500 mW at 25 °C - supports stable regulation in compact through-hole designs without forced cooling.
Dynamic Impedance Z_ZT	250 Ω @ 250 mA - maintains low output impedance near regulation knee for minimal voltage drift under load variation.
Noise Density	1 µV/√Hz - ensures ultra-low noise performance in sensitive analog references and instrumentation front-ends.
Temp Coefficient α_VZ	+0.095 %/°C - provides predictable, positive drift behavior for temperature-compensated reference designs.
Max Reverse Current I_R	10 µA @ 37.6 V - guarantees low leakage in high-impedance bias networks and standby power paths.
Junction Temp Range	-65 °C to +175 °C - validated for operation in extreme environments including space-grade and engine bay applications.

Pinout & Package

DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Reference ground node	Connected to system ground or common return; defines 0 V reference point for regulated output.
Cathode	Zener regulation output	Banded terminal supplies stabilized 47 V when reverse biased; must be connected to unregulated input via current-limiting resistor.

Key Features

Feature	Design Value
Metallurgical bond construction	Enables JANTXV qualification and resistance to thermal shock and mechanical stress in high-reliability systems.
1 µV/√Hz noise density	Supports low-noise voltage references in precision ADC drivers, sensor excitation, and RF bias networks.
Hermetically sealed DO-35 package	Prevents moisture ingress and parameter drift over decades in sealed military enclosures and avionics modules.
MIL-PRF-19500/435 qualification	Validates electrical, environmental, and life-test compliance for use in DoD and NASA procurement programs.
2% Zener voltage tolerance	Reduces need for post-assembly trimming in production test, lowering manufacturing cost in high-volume defense electronics.

Applications

Aerospace Power Reference	Avionics Sensor Biasing
Use Scenario: Stable 47 V reference for analog-to-digital converter (ADC) reference buffers in flight control computers. IC Role / Device Role / Timing Role: Zener diode providing primary voltage reference for 16-bit SAR ADCs requiring <0.02% long-term stability. Use Value: 2% initial tolerance and +0.095 %/°C tempco allow full-scale error compensation using single-point calibration across operating temperature range.	Use Scenario: Bias voltage source for piezoresistive pressure transducers in engine health monitoring systems. IC Role / Device Role / Timing Role: Precision Zener regulating excitation voltage to maintain constant bridge current under wide ambient temperature swings. Use Value: 1 µV/√Hz noise density prevents signal corruption in microvolt-level differential outputs, preserving 0.1% measurement accuracy.
Military Radio RF Stage Bias	Satellite Payload Voltage Clamp
Use Scenario: Collector bias stabilization for UHF power amplifier transistors in manpack tactical radios. IC Role / Device Role / Timing Role: Zener clamp limiting base-emitter reverse voltage during RF transient events and ESD pulses. Use Value: Hermetic DO-35 package and non-sensitive ESD rating (MIL-STD-750 method 1020) ensure survival in field-deployed radio units exposed to harsh handling.	Use Scenario: Overvoltage protection clamping for 48 V bus rails in LEO satellite power distribution units. IC Role / Device Role / Timing Role: High-reliability Zener absorbing transient energy during solar array arc events and battery fault conditions. Use Value: JANTXV qualification and radiation hardness per MicroNote 050 support operation in total ionizing dose (TID) environments up to 100 krad(Si).

Aerospace Power Reference

Avionics Sensor Biasing

Use Scenario: Stable 47 V reference for analog-to-digital converter (ADC) reference buffers in flight control computers.

IC Role / Device Role / Timing Role: Zener diode providing primary voltage reference for 16-bit SAR ADCs requiring <0.02% long-term stability.

Use Value: 2% initial tolerance and +0.095 %/°C tempco allow full-scale error compensation using single-point calibration across operating temperature range.

Use Scenario: Bias voltage source for piezoresistive pressure transducers in engine health monitoring systems.

IC Role / Device Role / Timing Role: Precision Zener regulating excitation voltage to maintain constant bridge current under wide ambient temperature swings.

Use Value: 1 µV/√Hz noise density prevents signal corruption in microvolt-level differential outputs, preserving 0.1% measurement accuracy.

Military Radio RF Stage Bias

Satellite Payload Voltage Clamp

Use Scenario: Collector bias stabilization for UHF power amplifier transistors in manpack tactical radios.

IC Role / Device Role / Timing Role: Zener clamp limiting base-emitter reverse voltage during RF transient events and ESD pulses.

Use Value: Hermetic DO-35 package and non-sensitive ESD rating (MIL-STD-750 method 1020) ensure survival in field-deployed radio units exposed to harsh handling.

Use Scenario: Overvoltage protection clamping for 48 V bus rails in LEO satellite power distribution units.

IC Role / Device Role / Timing Role: High-reliability Zener absorbing transient energy during solar array arc events and battery fault conditions.

Use Value: JANTXV qualification and radiation hardness per MicroNote 050 support operation in total ionizing dose (TID) environments up to 100 krad(Si).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4125US-1	Same 47 V, 2% spec but in surface-mount DO-213AA package; no axial leads.	Used where PCB real estate is constrained and automated SMT assembly is required.	Select when transitioning from through-hole to SMT or when board space limits DO-35 footprint.
JANTXV1N4125	Identical electrical specs and DO-35 package; differs only in marking format and traceability documentation.	Required for programs mandating full JANTXV traceability with lot-specific test data packages.	Select when contract requires JANTXV-level documentation, not just JANTXV-level performance.

Compared with 1N4125US-1 and JANTXV1N4125, the JAN1N4125C-1/TR offers identical Zener regulation performance in a tape-and-reel–ready DO-35 package with JAN-level qualification and "C" (2%) tolerance marking, making it optimal for manual prototyping, low-volume military repair, and mixed-technology assemblies.

Availability

JAN1N4125C-1/TR is available at Aetrix Electronics and suitable for aerospace power reference, avionics sensor biasing, and military radio RF stage bias applications requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.

Supply support for JAN1N4125C-1/TR 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 and mixed-signal components for defense, aerospace, and industrial markets.

The JAN1N4125C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical systems where long-term stability, radiation tolerance, and environmental ruggedness are mandatory.

FAQ

What is the Zener voltage tolerance of JAN1N4125C-1/TR?

JAN1N4125C-1/TR has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This is confirmed in the Microsemi T4-LDS-0245-2 datasheet, where the "C" code corresponds to 2% tolerance on the nominal 47 V Zener voltage at 250 mA test current. The tighter tolerance reduces calibration burden in high-accuracy reference designs compared to standard 5% variants like JAN1N4125-1/TR.

Is JAN1N4125C-1/TR qualified to JANTXV level?

Yes, JAN1N4125C-1/TR is qualified to JANTXV level per MIL-PRF-19500/435. The "JAN" prefix indicates minimum JAN level, and the datasheet explicitly states that the 1N4099-1 through 1N4135-1 series-including JAN1N4125C-1/TR-are qualified up to JANS level, with JANTXV being an intermediate qualification tier fully covered. This includes extended temperature screening, burn-in, and lot acceptance testing.

What does the "TR" suffix mean in JAN1N4125C-1/TR?

The "TR" suffix in JAN1N4125C-1/TR indicates tape-and-reel packaging per EIA-296 standard. This configuration supports automated pick-and-place assembly and is specified in the Mechanical and Packaging section of the Microsemi datasheet. It does not affect electrical or reliability specifications-only packaging format-and is compatible with all standard DO-35 reel feeders.

What is the maximum Zener current I_ZM for JAN1N4125C-1/TR?

The maximum Zener current I_ZM for JAN1N4125C-1/TR is 35.8 mA, as listed in the Electrical Characteristics table on page 3 of the T4-LDS-0245-2 datasheet. This value is derived from the 500 mW power rating and 47 V Zener voltage (I_ZM = P_M(AV)/V_Z ≈ 0.5 W / 47 V), and is validated under thermal equilibrium conditions at 25 °C lead temperature.

Does JAN1N4125C-1/TR have radiation-hardened characteristics?

Yes, JAN1N4125C-1/TR is inherently radiation hard as described in Microsemi MicroNote 050. Its metallurgically bonded glass construction and DO-35 hermetic package provide tolerance to total ionizing dose (TID) and displacement damage, supporting use in low-earth orbit (LEO) satellite payloads and nuclear instrumentation where radiation-induced parameter shift must be minimized.

JAN1N4125C-1/TR Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 47 V

Tolerance:: ±2%

Power - Max:: -

Impedance (Max) (Zzt):: 250 Ohms

Current - Reverse Leakage @ Vr:: 10 nA @ 35.8 V

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 200 mA

Operating Temperature:: -65°C ~ 175°C

Grade:: Military

Qualification:: MIL-PRF-19500/435

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AH (DO-35)

JAN1N4125C-1/TR FAQ

1.How can I place an order for JAN1N4125C-1/TR through Aetrix?

Please submit a Request for Quotation (RFQ) for JAN1N4125C-1/TR 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 JAN1N4125C-1/TR reliable?

The price and inventory of JAN1N4125C-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4125C-1/TR is usually 5 days.

3.What payment methods are accepted for JAN1N4125C-1/TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4125C-1/TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for JAN1N4125C-1/TR?

JAN1N4125C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your JAN1N4125C-1/TR 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 JAN1N4125C-1/TR?

For technical support, including JAN1N4125C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4125C-1/TR requirements.

6.How does Aetrix verify that JAN1N4125C-1/TR is sourced from the original manufacturer or authorized distributors?

All JAN1N4125C-1/TR 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 JAN1N4125C-1/TR meets industry standards.

7.What is the process for return or replacement of JAN1N4125C-1/TR?

All JAN1N4125C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4125C-1/TR, 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 JAN1N4125C-1/TR part is unused and in its original packaging.

Return procedure for JAN1N4125C-1/TR:

1.Submit a request within 90 days.

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

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