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Microchip Technology JANTX1N4122C-1/TR
- Part No.:
- JANTX1N4122C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4122C-1/TR.pdf
- Description:
- DIODE ZENER 36V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,526
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Product details
Overview
JANTX1N4122C-1/TR from Microsemi is a 36 V, ±2% tolerance, 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 JANTX1N4122C-1/TR datasheet, JANTX1N4122C-1/TR pinout, JANTX1N4122C-1/TR application, or JANTX1N4122C-1/TR equivalent, key selection factors include Zener voltage tolerance (±2%), low noise density (1 µV/√Hz), MIL-spec qualification level, thermal resistance (250 °C/W junction-to-lead), and axial-leaded DO-35 mechanical robustness.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 36 V at 250 mA test current, exhibiting a temperature coefficient of +0.095 %/°C and dynamic impedance of 200 Ω at IZT. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and radiation exposure.
Designed for operation in the reverse-biased breakdown region, it delivers regulated voltage across wide current ranges (IZK to IZM = 27.4 mA max) while maintaining low capacitance (<10 pF typical) and minimal ESD sensitivity per MIL-STD-750 method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 36 V ±2% at 250 mA - ensures tight regulation for reference circuits requiring stable 36 V bias |
| Power Dissipation | 500 mW @ TC = 25 °C - supports continuous regulation in compact axial-leaded layouts with linear derating above 50 °C |
| Zener Impedance ZZT | 200 Ω @ 250 mA - limits output voltage variation under load transients in feedback networks |
| Noise Density ND | 1 µV/√Hz - enables low-noise voltage references in precision analog signal chains |
| Temp Coefficient αVZ | +0.095 %/°C - predictable positive drift allows compensation in temperature-critical designs |
| Reverse Leakage IR | 10 µA @ 28.8 V - ensures minimal quiescent current in standby-mode regulators |
| Junction Temp Range | –65 to +175 °C - supports operation in extended-environment military avionics and space-qualified systems |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return path; defines regulation reference point |
| Cathode | Zener output terminal | Provides regulated 36 V output when reverse-biased; marked by color band |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense applications requiring traceable lot control and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Low noise density (1 µV/√Hz) | Enables use in high-fidelity reference stages without additional filtering |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| ±2% Zener tolerance (C suffix) | Reduces need for external trimming in production calibration of voltage references |
Applications
| Avionics Power Reference | Satellite DC-DC Converter Feedback |
|---|---|
Use Scenario: Providing stable 36 V reference for analog-to-digital converters and sensor excitation in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for precision ADCs and op-amps. Use Value: ±2% tolerance and +0.095 %/°C tempco enable <±0.5% total error over –55 to +125 °C operating range. | Use Scenario: Setting output voltage in isolated flyback converter feedback loop on LEO satellite power management units. IC Role / Device Role / Timing Role: Zener-based voltage clamp defining optocoupler LED drive threshold for secondary-side regulation. Use Value: Radiation-hardened construction and –65 to +175 °C junction rating ensure uninterrupted operation in orbital thermal vacuum. |
| Ground-Based Radar Bias Supply | Tactical Radio RF Amplifier Bias |
Use Scenario: Generating stable bias for GaN HEMT gate drivers in S-band radar transmitter modules. IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed negative gate voltage relative to source. Use Value: 200 Ω dynamic impedance minimizes gate voltage perturbation during RF switching transients. | Use Scenario: Regulating collector supply for Class-C RF power amplifiers in manpack radios operating across desert and arctic climates. IC Role / Device Role / Timing Role: Temperature-compensated Zener reference stabilizing amplifier operating point. Use Value: Low 1 µV/√Hz noise prevents AM sideband degradation in narrowband voice transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4122US-1 | Same 36 V ±2% Zener voltage but in surface-mount DO-213AA package; no axial leads | Requires PCB redesign for SMT assembly; eliminates through-hole mounting and lead-forming steps | Select when automated placement and board space reduction outweigh manual assembly flexibility |
| JANS1N4122C-1 | Identical electrical specs but qualified to JANS (highest MIL-PRF-19500/435 level) with full radiation hardness assurance | Required for spaceflight missions where total ionizing dose >100 krad(Si) must be guaranteed | Select only when JANS-level screening, lot traceability, and radiation test reports are contractually mandated |
Compared with JANTX1N4122C-1/TR, the 1N4122US-1 offers footprint miniaturization at the cost of mechanical mounting flexibility, while JANS1N4122C-1 adds radiation assurance overhead without improving baseline regulation performance for terrestrial applications.
Availability
JANTX1N4122C-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite DC-DC converter feedback, and ground-based radar bias supply requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JANTX1N4122C-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 JANTX1N4122C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for voltage regulation in mission-critical systems where parameter stability, radiation tolerance, and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTX1N4122C-1/TR?
The "C" suffix in JANTX1N4122C-1/TR denotes a ±2% Zener voltage tolerance at 250 mA test current, tighter than the standard ±5% (blank suffix) version. This tolerance is verified per MIL-PRF-19500/435 screening and applies across the full operating temperature range when used within rated power limits.
Is JANTX1N4122C-1/TR RoHS compliant?
No, JANTX1N4122C-1/TR is not RoHS compliant. The "e3" RoHS designation appears only on commercial-grade versions (e.g., 1N4122C-1e3); JANTX-level parts retain tin-lead plating per MIL-STD-750 method 2026 to ensure solderability and reliability under thermal cycling in military environments.
What does the "TR" suffix indicate in JANTX1N4122C-1/TR?
"TR" indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. JANTX1N4122C-1/TR contains the same die, qualification, and electrical specs as the bulk-packaged JANTX1N4122C-1, with added logistics support for high-volume production lines.
How is polarity marked on JANTX1N4122C-1/TR?
JANTX1N4122C-1/TR uses a cathode band - a single painted ring near one end of the DO-35 glass body. For proper Zener regulation, the banded end must be connected to the more positive potential; the unmarked end is the anode and connects to circuit ground or lower potential.
What is the maximum Zener current IZM for JANTX1N4122C-1/TR?
The maximum Zener current IZM for JANTX1N4122C-1/TR is 27.4 mA at 25 °C ambient, derived from its 500 mW power rating and 36 V Zener voltage. Operation above this current requires derating per the linear curve in Figure 2 of the datasheet to prevent junction overheating and parametric shift.
JANTX1N4122C-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):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 27.4 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)
JANTX1N4122C-1/TR FAQ
1.How can I place an order for JANTX1N4122C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4122C-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 JANTX1N4122C-1/TR reliable?
The price and inventory of JANTX1N4122C-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 JANTX1N4122C-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4122C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4122C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4122C-1/TR?
JANTX1N4122C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4122C-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 JANTX1N4122C-1/TR?
For technical support, including JANTX1N4122C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4122C-1/TR requirements.
6.How does Aetrix verify that JANTX1N4122C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4122C-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 JANTX1N4122C-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4122C-1/TR?
All JANTX1N4122C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4122C-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 JANTX1N4122C-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4122C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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