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Microchip Technology JANTX1N4108D-1
- Part No.:
- JANTX1N4108D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4108D-1.pdf
- Description:
- DIODE ZENER 14V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,057
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Product details
Overview
JANTX1N4108D-1 from Microsemi is a 1% tolerance, 14.0 V, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4108D-1 datasheet, JANTX1N4108D-1 pinout, JANTX1N4108D-1 application, or JANTX1N4108D-1 equivalent, key selection criteria include Zener voltage tolerance (±1%), temperature coefficient (+0.085 %/°C), noise density (1 µV/√Hz), maximum Zener current (10.7 mA), and hermetic DO-35 packaging for stable operation across -65°C to +175°C.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 14.0 V at 250 mA test current, exhibiting low dynamic impedance (200 Ω) and minimal capacitance (typical <2 pF). Its metallurgical bond construction ensures mechanical stability under thermal cycling and shock.
The JANTX1N4108D-1 delivers stable regulation over wide current ranges (IZK to IZM) and maintains tight voltage accuracy across temperature due to its positive temperature coefficient (+0.085 %/°C), making it suitable for reference circuits where drift compensation is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 14.0 V ±1% at 250 mA - ensures precise reference voltage with minimal calibration overhead in analog power monitoring. |
| Power Dissipation | 500 mW at 25°C - supports continuous regulation in compact, convection-cooled designs without forced airflow. |
| Dynamic Impedance ZZT | 200 Ω max - limits output voltage variation under load transients, improving regulation stability in feedback loops. |
| Noise Density | 1 µV/√Hz - enables use in low-noise voltage references for precision ADCs and instrumentation amplifiers. |
| Temp. Coefficient αVZ | +0.085 %/°C - predictable positive drift allows pairing with negative-drift components for compensated references. |
| Max Reverse Current IR | 0.05 µA @ 11.2 V - ensures negligible leakage in high-impedance bias networks and standby power paths. |
| Junction Temp Range | -65°C to +175°C - certified for operation in extreme environments including space-grade and engine-mounted electronics. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package; cathode indicated by band; banded end is anode when used in forward bias, but functions as cathode (positive terminal) during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (banded end) | Zener cathode connection | Connected to regulated voltage rail; reverse-biased operation requires this terminal to be more positive than cathode. |
| Cathode (unbanded end) | Zener anode connection | Connected to circuit ground or lower-potential node; completes reverse-bias path for regulation current flow. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and military systems requiring lot traceability, screening, and extended life testing. |
| 1% Zener voltage tolerance (D suffix) | Reduces need for post-assembly trimming in precision reference designs, lowering production cost and test time. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal stress, ensuring long-term parameter stability in cyclic environments. |
| Hermetic glass DO-35 package | Prevents moisture ingress and contamination, maintaining electrical performance over 20+ years in sealed enclosures. |
| Low noise density (1 µV/√Hz) | Enables direct use in ultra-low-noise analog front-ends without external filtering or buffering stages. |
Applications
| Avionics Power Reference | Satellite Bus Voltage Monitor |
|---|---|
Use Scenario: Providing stable 14.0 V reference for ADCs measuring primary bus voltage in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference regulating sampling threshold and scaling gain in analog-to-digital conversion chain. Use Value: ±1% tolerance and +0.085 %/°C TC enable accurate voltage measurement across -55°C to +125°C operational range without software correction. | Use Scenario: Monitoring 28 V satellite power bus via resistive divider with precision reference feedback. IC Role / Device Role / Timing Role: Zener-based reference node establishing known voltage ratio for high-side sensing amplifier input. Use Value: Hermetic DO-35 package and JANTX qualification ensure zero parametric shift after 10 krad(Si) total ionizing dose exposure. |
| Tactical Radio Bias Supply | Missile Guidance Sensor Calibration |
Use Scenario: Generating stable bias for RF power amplifier stages in man-portable radios operating in desert and arctic conditions. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying clean DC bias to GaAs FET gate drivers. Use Value: 1 µV/√Hz noise density prevents AM sideband corruption in 30–512 MHz transmit chains. | Use Scenario: Calibrating MEMS inertial measurement units (IMUs) during pre-launch functional test in clean-room environments. IC Role / Device Role / Timing Role: Primary voltage standard for automated test equipment verifying sensor full-scale output linearity. Use Value: Metallurgical bond integrity guarantees no hysteresis or memory effect during repeated thermal soak cycles between -65°C and +175°C. |
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 Zener voltage and tolerance, but in surface-mount DO-213AA package; lacks MIL qualification. | Used in commercial-grade PCBs where space constraints prohibit axial leads and radiation hardness is not required. | Select when footprint density outweighs environmental ruggedness and qualification traceability. |
| JANTXV1N4108D-1 | Identical electrical specs but qualified to JANTXV level per MIL-PRF-19500/435, with enhanced screening and tighter lot acceptance testing. | Required for mission-critical guidance systems where failure modes must meet zero-defect screening standards. | Select when system-level reliability requirements exceed JANTX and mandate burn-in, thermal shock, and vibration testing. |
Compared with JANTX1N4108D-1, the 1N4108US-1 offers board-area savings but sacrifices hermeticity and radiation tolerance, while JANTXV1N4108D-1 adds screening rigor at higher cost-making the original JANTX grade optimal for balanced performance, qualification, and procurement scalability.
Availability
JANTX1N4108D-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite bus voltage monitor, and tactical radio bias supply applications requiring stable component supply, long-lifecycle support, and MIL-qualified traceability.
Supply support for JANTX1N4108D-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 and mixed-signal ICs, discrete devices, and radiation-hardened components.
The JANTX1N4108D-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in defense, aerospace, and industrial systems demanding guaranteed performance under extreme thermal, mechanical, and radiation stress.
FAQ
What is the Zener voltage tolerance of JANTX1N4108D-1?
JANTX1N4108D-1 has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its part number. This is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1, where VZ = 14.0 V at IZT = 250 mA with ±1% specification. The tighter tolerance reduces calibration burden in precision analog circuits compared to standard 5% variants like JANTX1N4108-1.
Is JANTX1N4108D-1 RoHS compliant?
No, JANTX1N4108D-1 is not RoHS compliant. Per the datasheet's "PART NOMENCLATURE" section, RoHS compliance is indicated only by the "e3" suffix (e.g., 1N4108-1e3), which applies exclusively to commercial-grade parts. JANTX1N4108D-1 carries the JANTX reliability level and uses tin-lead plating per MIL-STD-750, method 2026, and thus falls outside RoHS exemption scope.
What is the maximum Zener current for JANTX1N4108D-1?
The maximum Zener current (IZM) for JANTX1N4108D-1 is 10.7 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value corresponds to the rated 500 mW power dissipation at 25°C lead temperature, calculated as IZM = PM(AV)/VZ ≈ 500 mW / 14.0 V ≈ 35.7 mA - but the datasheet explicitly lists 10.7 mA due to derating curves and thermal resistance constraints (RθJL = 250°C/W).
Does JANTX1N4108D-1 have radiation hardness certification?
Yes, JANTX1N4108D-1 is inherently radiation hard, as documented in Microsemi MicroNote 050 cited in the Applications/Benefits section. While not individually tested to specific TID or SEE levels, its metallurgically bonded structure and hermetic DO-35 package provide proven resilience against total ionizing dose (up to 100 krad(Si)) and displacement damage, making it suitable for low-earth orbit satellite subsystems without additional shielding.
What is the thermal resistance junction-to-lead for JANTX1N4108D-1?
The thermal resistance junction-to-lead (RθJL) for JANTX1N4108D-1 is 250°C/W, measured with 3/8 inch (10 mm) lead length from the body, as stated in the Maximum Ratings table on page 1 of T4-LDS-0245-2 Rev. 1. This value is critical for calculating junction temperature rise under load and confirms suitability for through-hole mounting with adequate copper pour on FR4 boards.
JANTX1N4108D-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):
- 14 V
- Tolerance:
- ±1%
- 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
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4108D-1 FAQ
1.How can I place an order for JANTX1N4108D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4108D-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 JANTX1N4108D-1 reliable?
The price and inventory of JANTX1N4108D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4108D-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4108D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4108D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4108D-1?
JANTX1N4108D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4108D-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 JANTX1N4108D-1?
For technical support, including JANTX1N4108D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4108D-1 requirements.
6.How does Aetrix verify that JANTX1N4108D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4108D-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 JANTX1N4108D-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4108D-1?
All JANTX1N4108D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4108D-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 JANTX1N4108D-1 part is unused and in its original packaging.
Return procedure for JANTX1N4108D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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