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Microchip Technology JANTX1N4123-1/TR
- Part No.:
- JANTX1N4123-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4123-1/TR.pdf
- Description:
- DIODE ZENER 39V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,476
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Product details
Overview
JANTX1N4123-1/TR from Microsemi is a 500 mW, 39.0 V ±5% metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability applications. It delivers stable voltage regulation at 250 mA test current with 200 Ω dynamic impedance, 0.01 µA max reverse leakage at 31.2 V, and +0.095 %/°C temperature coefficient.
For engineers reviewing the JANTX1N4123-1/TR datasheet, JANTX1N4123-1/TR pinout, JANTX1N4123-1/TR application, or JANTX1N4123-1/TR equivalent, key selection criteria include Zener voltage tolerance, MIL-qualified reliability grade, thermal resistance (250 °C/W junction-to-lead), noise density (≤1 µV/√Hz), and DO-35 mechanical compatibility in space-constrained analog reference and power supply designs.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures low noise and radiation hardness per MicroNote 050, supporting operation across -65 °C to +175 °C junction temperature range.
The JANTX1N4123-1/TR exhibits 29.7 mA maximum Zener current at rated 500 mW dissipation, linearly derated above 50 °C lead temperature, and maintains ≤1 µV/√Hz noise density due to its low-voltage Zener structure - distinct from higher-noise 6.8 V+ variants in the same family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 39.0 V @ 250 mA - precise reference point for regulated output in feedback loops |
| Zener Impedance ZZT | 200 Ω - limits regulation error under load transients |
| Reverse Leakage IR | 0.01 µA @ 31.2 V - ensures minimal standby current in high-impedance bias networks |
| Noise Density ND | ≤1 µV/√Hz - enables low-noise analog references in instrumentation |
| Temp Coefficient αVZ | +0.095 %/°C - predictable drift behavior for compensated circuits |
| Power Dissipation PM(AV) | 500 mW @ TL = 25 °C - defines thermal design margin on PCB with 3/8″ lead length |
| Junction Temp Range | -65 °C to +175 °C - supports extended industrial and aerospace environments |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by color band; 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 lower-potential rail in shunt regulator configuration |
| Cathode (banded end) | Zener regulation node | Applied to input voltage source; regulates voltage between cathode and anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for defense/aerospace systems requiring traceable lot data and screening |
| Metallurgical bond construction | Enables inherent radiation hardness and low long-term parameter drift |
| Low noise density (≤1 µV/√Hz) | Supports precision analog references without external filtering in sensitive measurement paths |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter shift over decades of field operation |
| Non-ESD-sensitive per MIL-STD-750 | Eliminates need for ESD handling protocols during manual assembly or rework |
Applications
| Avionics Power Monitoring | Satellite DC-DC Reference |
|---|---|
Use Scenario: Monitoring 28 V aircraft bus voltage with ±0.5 V accuracy over -55 °C to +125 °C. IC Role / Device Role / Timing Role: Shunt reference for comparator-based overvoltage detection circuit. Use Value: JANTX1N4123-1/TR's +0.095 %/°C tempco and MIL-qualified stability ensure consistent trip thresholds across flight envelope. | Use Scenario: Providing stable 39 V reference for isolated feedback in radiation-hardened DC-DC converters. IC Role / Device Role / Timing Role: Primary voltage reference in secondary-side optocoupler feedback loop. Use Value: Hermetic DO-35 package and metallurgical bond enable >100 krad(Si) TID tolerance without parameter degradation. |
| Downhole Oilfield Sensor Bias | Tactical Radio RF Stage Bias |
Use Scenario: Generating precision bias for MEMS pressure sensor front-end in 175 °C wellbore environment. IC Role / Device Role / Timing Role: High-temp Zener reference for op-amp gain-setting network. Use Value: JANTX1N4123-1/TR's 175 °C max junction temperature and 250 °C/W RθJL allow direct mounting to heat-sinked PCB traces. | Use Scenario: Setting gate bias for GaN RF power amplifier stage in manpack radio transceiver. IC Role / Device Role / Timing Role: Low-noise voltage clamp protecting amplifier input from transient overvoltage. Use Value: ≤1 µV/√Hz noise density prevents injection of broadband noise into sensitive RF receive path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4123US-1 | Same electrical specs but in DO-213AA surface-mount package; no axial leads | Requires SMT reflow process; unsuitable for through-hole prototyping or high-vibration mechanical retention | Select when board space is constrained and automated assembly is used |
| JANTXV1N4123-1 | Higher screening level (JANTXV vs JANTX); tighter parametric limits and extended environmental testing | Required for mission-critical avionics where failure modes must be statistically bounded | Select when DO-35 form factor is retained but enhanced reliability assurance is mandated |
Compared with JANTX1N4123-1/TR, the 1N4123US-1 offers identical regulation performance in a compact SMT footprint but sacrifices mechanical robustness and hand-solderability, while the JANTXV1N4123-1 adds cost and test overhead for marginal parametric improvement in non-failure-critical subsystems.
Availability
JANTX1N4123-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite DC-DC reference, and downhole oilfield sensor bias requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N4123-1/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 aerospace, defense, and industrial markets.
The JANTX1N4123-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in harsh-environment systems where parametric stability, radiation tolerance, and long-term reliability outweigh cost sensitivity.
FAQ
What is the Zener voltage tolerance for JANTX1N4123-1/TR?
JANTX1N4123-1/TR has a nominal Zener voltage of 39.0 V with ±5% tolerance, consistent with the standard JEDEC specification for the 1N4099–1N4135 series. This tolerance applies at 25 °C with the diode in thermal equilibrium and is verified per MIL-PRF-19500/435 screening requirements for JANTX-level devices.
Is JANTX1N4123-1/TR RoHS compliant?
No, JANTX1N4123-1/TR is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions (e.g., 1N4123-1e3); military-spec parts like JANTX1N4123-1/TR use tin-lead plating per MIL-STD-750 and are exempt from RoHS restrictions under EU Directive 2011/65/EU Annex III.
What is the maximum power dissipation of JANTX1N4123-1/TR at 100 °C lead temperature?
At 100 °C lead temperature, JANTX1N4123-1/TR's rated average power dissipation is linearly derated from 500 mW at 25 °C to zero at 175 °C. Using the derating slope of 7.14 mW/°C, the maximum allowable power at 100 °C is approximately 236 mW - calculated as 500 mW − (75 °C × 7.14 mW/°C).
How does the noise performance of JANTX1N4123-1/TR compare to higher-voltage Zeners in the same family?
JANTX1N4123-1/TR exhibits ≤1 µV/√Hz noise density, significantly lower than 6.8 V+ variants (e.g., 40 µV/√Hz for 6.8 V parts). This is due to its lower Zener voltage mechanism, making JANTX1N4123-1/TR preferable for low-noise analog references where broadband noise injection must be minimized.
Can JANTX1N4123-1/TR be used in surface-mount designs?
JANTX1N4123-1/TR is packaged in axial-leaded DO-35 and is not suitable for standard surface-mount assembly. For SMT implementation, the functionally equivalent 1N4123US-1 in DO-213AA package should be selected - it shares identical electrical characteristics but requires reflow soldering and lacks the mechanical retention of axial leads.
JANTX1N4123-1/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):
- 39 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 29.7 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)
JANTX1N4123-1/TR FAQ
1.How can I place an order for JANTX1N4123-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4123-1/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 JANTX1N4123-1/TR reliable?
The price and inventory of JANTX1N4123-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4123-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4123-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4123-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4123-1/TR?
JANTX1N4123-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4123-1/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 JANTX1N4123-1/TR?
For technical support, including JANTX1N4123-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4123-1/TR requirements.
6.How does Aetrix verify that JANTX1N4123-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4123-1/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 JANTX1N4123-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4123-1/TR?
All JANTX1N4123-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4123-1/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 JANTX1N4123-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4123-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4123-1/TR Tags
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