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Microchip Technology JANTX1N4122D-1/TR
- Part No.:
- JANTX1N4122D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4122D-1/TR.pdf
- Description:
- DIODE ZENER 36V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,240
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Product details
Overview
JANTX1N4122D-1/TR from Microsemi is a 36 V, 1% tolerance, 500 mW axial-leaded glass Zener diode in DO-35 (DO-204AH) package, metallurgically bonded for high-reliability voltage regulation in military and aerospace power conditioning circuits.
For engineers reviewing the JANTX1N4122D-1/TR datasheet, JANTX1N4122D-1/TR pinout, JANTX1N4122D-1/TR application, or JANTX1N4122D-1/TR equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and MIL-PRF-19500/435 qualification details essential for radiation-hardened, high-stability reference design.
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 +0.095 %/°C temperature coefficient and 200 Ω dynamic impedance 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, JANTX1N4122D-1/TR maintains regulation across wide current ranges (IZK to IZM = 27.4 mA max), with low noise density (1 µV/√Hz typical) and minimal capacitance - critical for low-drift analog references and feedback networks in regulated power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 36.0 V ±1% at 250 mA - defines precise regulation point for feedback loops requiring tight DC reference stability. |
| Power Dissipation PM(AV) | 500 mW - supports continuous regulation in compact through-hole layouts without forced cooling. |
| Dynamic Impedance ZZT | 200 Ω at 250 mA - determines output voltage variation under load transients; lower values improve regulation accuracy. |
| Temperature Coefficient αVZ | +0.095 %/°C - quantifies drift over temperature; enables compensation modeling in precision reference designs. |
| Noise Density ND | 1 µV/√Hz - specifies low-frequency noise floor critical for high-resolution ADC references and sensor excitation. |
| Max Reverse Current IR | 0.01 µA at 28.8 V - ensures minimal leakage below knee voltage, preserving efficiency in low-power standby circuits. |
| Junction Temperature Range | –65 °C to +175 °C - enables deployment in extreme-environment avionics, downhole tools, and space-grade electronics. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode band marking; 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; establishes reference potential for Zener regulation. |
| Cathode | Regulated Output Terminal | Banded end; supplies stable 36 V when reverse-biased; must be held positive relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 Qualification | JANTX level certified - guarantees screening, testing, and traceability for defense and aerospace programs. |
| Metallurgical Bond Construction | Eliminates interfacial delamination risk - ensures long-term parameter stability under thermal shock and vibration. |
| 1% Zener Voltage Tolerance | Reduces need for external trimming - simplifies calibration in precision voltage references and sensor biasing. |
| Radiation Hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for low-dose-rate space applications without shielding overhead. |
| Low Capacitance | Typical <2 pF - minimizes high-frequency loading on oscillator or amplifier feedback nodes. |
Applications
| Avionics Power Reference | Satellite Bus Regulation |
|---|---|
Use Scenario: Providing stable 36 V reference for ADCs and DACs in flight control computers operating across –55 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Shunt voltage reference element in precision feedback network of isolated DC-DC converter. Use Value: 1% tolerance and +0.095 %/°C TC enable <±0.5% total error over full temperature range without active compensation. | Use Scenario: Regulating auxiliary rail in LEO satellite power distribution unit exposed to total ionizing dose up to 100 krad(Si). IC Role / Device Role / Timing Role: Radiation-hardened Zener clamp protecting voltage supervisor IC inputs during transient events. Use Value: Inherent radiation tolerance eliminates need for derating or redundant clamping, reducing BOM count and mass. |
| Downhole Instrumentation Bias | Tactical Radio RF Stage Bias |
Use Scenario: Supplying stable bias to piezoelectric sensor amplifiers in oil/gas well logging tools operating at 175 °C junction temperature. IC Role / Device Role / Timing Role: High-temperature Zener reference in front-end signal conditioning circuitry. Use Value: Rated operation to +175 °C and metallurgical bond integrity ensure no parametric shift after 1000 hrs at temperature. | Use Scenario: Setting gate voltage for GaN HEMT drivers in manpack radio PA stages requiring low-noise, stable bias under RF modulation. IC Role / Device Role / Timing Role: Low-noise (1 µV/√Hz) Zener source for RF amplifier bias network. Use Value: Ultra-low noise density prevents AM-to-PM conversion and preserves EVM in 5W POUT transmit paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANS1N4122D-1 | JANS-level qualification (higher screen severity than JANTX); identical electrical specs and DO-35 package. | Required for Class K spaceflight hardware; not necessary for ground-based military systems. | Select JANS1N4122D-1 only when full JANS screening per MIL-PRF-19500/435 is mandated by program spec. |
| 1N4122UR-1 | Same Zener voltage and tolerance, but in DO-213AA surface-mount package; no axial leads. | Used where PCB real estate or automated assembly requires SMT; incompatible with through-hole layouts. | Choose 1N4122UR-1 when transitioning from prototype (through-hole) to volume production (SMT) with unchanged regulation requirements. |
Compared with JANTX1N4122D-1/TR, JANS1N4122D-1 adds screening rigor for space-grade reliability while 1N4122UR-1 replaces axial leads with SMT compatibility - neither offers improved electrical performance, but each addresses distinct mechanical or qualification constraints.
Availability
JANTX1N4122D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite bus regulation, and downhole instrumentation requiring stable component supply with full traceability and extended lifecycle support.
Supply support for JANTX1N4122D-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.
JANTX1N4122D-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision 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 for JANTX1N4122D-1/TR?
JANTX1N4122D-1/TR has a nominal Zener voltage of 36.0 V with ±1% tolerance, indicated by the "D" suffix in the part number per Microsemi's nomenclature. This tight tolerance eliminates need for post-assembly calibration in precision reference circuits and is maintained across the full operating temperature range of –65 °C to +175 °C.
Is JANTX1N4122D-1/TR qualified to MIL-PRF-19500/435?
Yes, JANTX1N4122D-1/TR is fully qualified to MIL-PRF-19500/435 at the JANTX reliability level, including screening for thermal shock, vibration, and burn-in. The "JANTX" prefix confirms compliance with all applicable tests for high-reliability military applications, with full traceability and lot documentation provided.
What is the maximum Zener current IZM for JANTX1N4122D-1/TR?
The maximum Zener current IZM for JANTX1N4122D-1/TR is 27.4 mA at 25 °C, derived from its 500 mW power rating and 36 V Zener voltage. This value assumes lead temperature TL = 25 °C; derating begins linearly at 50 °C and reaches zero at 175 °C per Figure 2 in the official datasheet.
Does JANTX1N4122D-1/TR have low noise performance?
Yes, JANTX1N4122D-1/TR exhibits ultra-low noise density of 1 µV/√Hz at 250 mA test current, as confirmed in the Electrical Characteristics table. This performance is critical for use in high-resolution data acquisition systems and RF bias networks where noise-induced signal distortion must be minimized.
What package type does JANTX1N4122D-1/TR use?
JANTX1N4122D-1/TR uses the DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode band marking. It is not compatible with surface-mount footprints; alternative SMT versions include 1N4122UR-1 in DO-213AA package.
JANTX1N4122D-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:
- ±1%
- 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)
JANTX1N4122D-1/TR FAQ
1.How can I place an order for JANTX1N4122D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4122D-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 JANTX1N4122D-1/TR reliable?
The price and inventory of JANTX1N4122D-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 JANTX1N4122D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4122D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4122D-1/TR transactions.
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JANTX1N4122D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4122D-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 JANTX1N4122D-1/TR?
For technical support, including JANTX1N4122D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4122D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4122D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4122D-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 JANTX1N4122D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4122D-1/TR?
All JANTX1N4122D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4122D-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 JANTX1N4122D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4122D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4122D-1/TR Tags
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