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Microchip Technology JANS1N4108-1/TR
- Part No.:
- JANS1N4108-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4108-1/TR.pdf
- Description:
- DIODE ZENER 14V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,953
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Product details
Overview
JANS1N4108-1/TR from Microsemi is a 500 mW, 14.0 V Zener voltage regulator diode in DO-35 (DO-204AH) glass package, qualified to JANS level per MIL-PRF-19500/435, with ±5% tolerance, 200 Ω dynamic impedance at 250 mA, and max reverse current of 0.05 µA at 11.2 V. It delivers stable reference voltage in high-reliability power supply regulation.
For engineers reviewing the JANS1N4108-1/TR datasheet, JANS1N4108-1/TR pinout, JANS1N4108-1/TR application, or JANS1N4108-1/TR equivalent, key selection factors include its JANS-level radiation-hardened qualification, low noise density (≤1 µV/√Hz below 6.8 V), 175 °C max junction temperature, and axial-leaded DO-35 mechanical robustness for aerospace and defense systems.
Technical Context
This device operates as a reverse-biased Zener regulator with metallurgically bonded construction for enhanced thermal stability and reliability. Its 14.0 V nominal Zener voltage is specified at 250 mA test current (IZT), with dynamic impedance (ZZT) of 200 Ω and temperature coefficient of +0.085 %/°C - indicating positive drift over temperature.
The diode exhibits ultra-low leakage: maximum reverse current (IR) is 0.05 µA at VR = 11.2 V (80% of VZ), and it maintains stable regulation across -65 °C to +175 °C junction temperature range. Its 500 mW power rating derates linearly to zero at 175 °C ambient on standard FR4 PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 14.0 V at 250 mA - provides precise DC reference for analog sensing and feedback loops. |
| Zener Tolerance | ±5% - supports cost-effective design where tight voltage accuracy is not mission-critical. |
| Dynamic Impedance ZZT | 200 Ω at IZT - ensures minimal output voltage variation under load current changes. |
| Max Reverse Current IR | 0.05 µA at 11.2 V - enables low-power standby operation without significant quiescent loss. |
| Junction Temp Range | -65 °C to +175 °C - certified for extreme-environment deployment in avionics and space-grade electronics. |
| Power Dissipation | 500 mW at 25 °C, derated linearly to zero at 175 °C - defines safe operating area for thermal design. |
| Noise Density ND | ≤1 µV/√Hz - critical for low-noise reference applications such as precision ADC biasing. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction; cathode indicated by band - operated with banded end positive relative to anode for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; establishes reference point for regulated output. |
| Cathode | Zener regulation terminal / input for reverse bias | Connected to unregulated supply; develops stable 14.0 V drop when reverse-biased above breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Guarantees full screening, lot traceability, and radiation hardness for flight-critical systems. |
| Metallurgical bond construction | Improves thermal cycling endurance and long-term parameter stability vs. epoxy-bonded alternatives. |
| Low noise density ≤1 µV/√Hz | Enables use in high-resolution analog front-ends without requiring external filtering. |
| Hermetic glass DO-35 package | Provides moisture immunity and outgassing control required for vacuum and sealed enclosure use. |
| Non-ESD-sensitive per MIL-STD-750 | Eliminates need for ESD handling protocols during assembly and field maintenance. |
Applications
| Aerospace Power Regulation | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary rail voltage in satellite power distribution units exposed to thermal cycling and ionizing radiation. IC Role / Device Role / Timing Role: Zener diode providing primary voltage reference for DC-DC converter feedback networks. Use Value: JANS qualification and inherent radiation hardness ensure uninterrupted regulation over 15+ year orbital lifetime. | Use Scenario: Stabilizing bias voltage for RF amplifier stages in radar transceivers operating in wide ambient temperature ranges. IC Role / Device Role / Timing Role: Precision shunt reference maintaining gain stability across -55 °C to +125 °C operational envelope. Use Value: Low 200 Ω dynamic impedance minimizes gain drift caused by supply ripple and load transients. |
| Avionics Sensor Conditioning | Nuclear Instrumentation |
Use Scenario: Supplying excitation voltage to strain gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Low-noise 14.0 V reference source for ratiometric measurement circuits. Use Value: ≤1 µV/√Hz noise density prevents degradation of microvolt-level bridge output resolution. | Use Scenario: Establishing calibrated threshold voltage in radiation detector pulse-shaping amplifiers. IC Role / Device Role / Timing Role: Stable Zener clamp defining comparator trip point in high-dose gamma environments. Use Value: Hermetic DO-35 packaging and metallurgical bond prevent parameter shift under cumulative 10⁶ rad(Si) exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4108US-1 | Same electrical specs but in DO-213AA surface-mount package; no axial leads. | Used where board space is constrained and reflow soldering is preferred over through-hole assembly. | Select when transitioning from through-hole to SMT manufacturing without changing circuit topology. |
| JANTXV1N4108-1 | Identical Zener parameters and DO-35 package, but qualified only to JANTXV level (not JANS); lower screening rigor. | Suitable for non-flight hardware where full JANS radiation testing is not mandated. | Choose for cost-sensitive ground-test equipment or subsystems with relaxed qualification requirements. |
Compared with JANS1N4108-1/TR, the 1N4108US-1 offers identical regulation performance in a compact SMT form factor, while JANTXV1N4108-1 reduces procurement cost and lead time at the expense of full JANS radiation assurance - enabling tiered qualification strategies across program phases.
Availability
JANS1N4108-1/TR is available at Aetrix Electronics and suitable for aerospace power regulation, defense system reference, and avionics sensor conditioning requiring stable component supply under extended lifecycle commitments.
Supply support for JANS1N4108-1/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) designs high-reliability semiconductors for aerospace, defense, and industrial markets, with expertise in radiation-hardened and mil-spec discrete components.
The JANS1N4108-1/TR belongs to Microsemi's legacy 1N4099–1N4135 series of glass Zener diodes, engineered specifically for high-stability voltage reference in mission-critical analog circuits subject to extreme environmental stress.
FAQ
What is the Zener voltage tolerance for JANS1N4108-1/TR?
JANS1N4108-1/TR has a nominal Zener voltage of 14.0 V with ±5% tolerance, consistent with the standard JEDEC specification for the 1N4099–1N4135 family. This tolerance applies at 25 °C with the diode in thermal equilibrium and is verified per MIL-PRF-19500/435 screening requirements for JANS-level devices.
Is JANS1N4108-1/TR radiation hardened?
Yes, JANS1N4108-1/TR is inherently radiation hard as documented in Microsemi MicroNote 050 and qualified to JANS level per MIL-PRF-19500/435. Its metallurgically bonded glass construction and hermetic DO-35 package provide proven resistance to total ionizing dose (TID) and single-event effects in space and nuclear environments.
What is the maximum reverse leakage current for JANS1N4108-1/TR?
The maximum reverse current (IR) for JANS1N4108-1/TR is 0.05 µA measured at VR = 11.2 V (80% of nominal VZ). This ultra-low leakage is guaranteed across the full -65 °C to +175 °C junction temperature range and supports low-power standby modes in battery-backed systems.
Does JANS1N4108-1/TR require special ESD handling?
No, JANS1N4108-1/TR is non-sensitive to ESD per MIL-STD-750 Method 1020. Its glass package and metallurgical bond eliminate static charge accumulation pathways, allowing standard handling without ESD protection measures during assembly or field service.
What is the thermal resistance junction-to-lead for JANS1N4108-1/TR?
JANS1N4108-1/TR has a thermal resistance junction-to-lead (RθJL) of 250 °C/W when mounted with 3/8 inch (10 mm) lead length from body. This value is measured under standardized conditions and informs heatsinking requirements for continuous 500 mW operation in high-temperature chassis environments.
JANS1N4108-1/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):
- 14 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4108-1/TR FAQ
1.How can I place an order for JANS1N4108-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4108-1/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 JANS1N4108-1/TR reliable?
The price and inventory of JANS1N4108-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4108-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4108-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4108-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4108-1/TR?
JANS1N4108-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4108-1/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 JANS1N4108-1/TR?
For technical support, including JANS1N4108-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4108-1/TR requirements.
6.How does Aetrix verify that JANS1N4108-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4108-1/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 JANS1N4108-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4108-1/TR?
All JANS1N4108-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4108-1/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 JANS1N4108-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4108-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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