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Microchip Technology JANS1N4122D-1/TR
- Part No.:
- JANS1N4122D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4122D-1/TR.pdf
- Description:
- DIODE ZENER 36V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,901
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Product details
Overview
JANS1N4122D-1/TR from Microsemi is a 36 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers stable voltage regulation at 250 mA test current with 200 Ω dynamic impedance, low noise density (1 µV/√Hz), and operates across –65 °C to +175 °C junction temperature.
For engineers reviewing the JANS1N4122D-1/TR datasheet, JANS1N4122D-1/TR pinout, JANS1N4122D-1/TR application, or JANS1N4122D-1/TR equivalent, key selection criteria include Zener voltage tolerance (1%), radiation hardness, hermetic DO-35 packaging, MIL-qualified reliability level, and thermal derating behavior above 50 °C.
Technical Context
This device functions as a precision shunt voltage regulator in feedback loops and reference circuits where long-term stability under extreme environmental stress is required. Its metallurgical bond construction ensures mechanical robustness and low parameter drift, while its 1% voltage tolerance and +0.095 %/°C temperature coefficient support tight regulation in temperature-varying systems.
The JANS1N4122D-1/TR exhibits minimal capacitance (typical <2 pF at 36 V), enabling use in low-noise analog references and timing circuits. Its 1 µV/√Hz noise density at 36 V and 250 mA makes it suitable for precision instrumentation front-ends where signal integrity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 36.0 V ±1% at 250 mA - enables accurate 36 V reference generation with minimal calibration overhead |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - defines maximum continuous power handling on standard FR4 PCBs |
| Dynamic Impedance ZZT | 200 Ω at 250 mA - determines output voltage variation under load current changes |
| Noise Density | 1 µV/√Hz at 36 V - supports low-noise analog reference design without additional filtering |
| Temp Coefficient αVZ | +0.095 %/°C - quantifies voltage drift over temperature; requires compensation in wide-range systems |
| Reverse Leakage IR | 10 nA max at 28.8 V - ensures minimal error current in high-impedance bias networks |
| Junction Temp Range | –65 °C to +175 °C - validated for operation in space-grade and downhole electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package. Cathode indicated by band; operated with banded end positive relative to anode for Zener regulation. Approximate weight: 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential point in shunt regulator configuration |
| Cathode | Zener output node | Provides regulated 36 V output; must be decoupled locally to suppress noise and transients |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for Class S (space-level) reliability with full lot traceability and screening per military standards |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| Hermetic DO-35 glass package | Prevents moisture ingress and parameter shift over decades of field operation |
| 1% Zener voltage tolerance | Reduces need for post-assembly trimming in precision reference designs |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for low-earth orbit missions |
Applications
| Avionics Power Reference | Satellite Sensor Biasing |
|---|---|
Use Scenario: Providing stable 36 V reference for ADC drivers and op-amp bias networks in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precision analog operating point. Use Value: 1% tolerance and radiation hardness ensure consistent performance across mission lifetime without recalibration. | Use Scenario: Biasing photodiode amplifiers and MEMS gyroscope interfaces in LEO satellite payloads. IC Role / Device Role / Timing Role: Low-noise Zener reference supplying clean bias voltage to sensitive analog front-ends. Use Value: 1 µV/√Hz noise density minimizes signal-to-noise degradation in low-light or high-resolution sensing. |
| Nuclear Instrumentation | Downhole Telemetry |
Use Scenario: Regulating supply rails for gamma spectrometer pulse-height analyzers operating in reactor containment zones. IC Role / Device Role / Timing Role: High-temperature-stable voltage reference maintaining calibration integrity at 150 °C ambient. Use Value: –65 °C to +175 °C junction rating and TID tolerance enable uninterrupted operation in high-radiation, high-temp environments. | Use Scenario: Generating reference voltage for pressure/temperature sensor signal conditioning in oil well logging tools. IC Role / Device Role / Timing Role: Hermetically sealed shunt regulator ensuring long-term stability under extreme thermal cycling and vibration. Use Value: Metallurgical bond and DO-35 hermeticity prevent parameter drift after 20,000+ thermal cycles in downhole deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4122D-1 | Same 36 V, 1%, DO-35, but qualified only to JANTXV level - lower screening rigor and no Class S radiation testing | Suitable for high-reliability ground-based military systems where full JANS screening is not mandated | Select when cost sensitivity outweighs need for space-grade radiation assurance |
| 1N4122D-1/TR | Commercial-grade version - RoHS-compliant, no MIL qualification, same electrical specs and DO-35 package | Applicable in industrial test equipment and non-safety-critical instrumentation requiring 36 V reference | Choose for volume production where extended temperature range and radiation hardness are unnecessary |
Compared with JANTXV1N4122D-1 and 1N4122D-1/TR, the JANS1N4122D-1/TR provides verified Class S radiation tolerance, full lot traceability, and extended temperature validation - essential for mission-critical aerospace systems where failure is not an option.
Availability
JANS1N4122D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite sensor biasing, and nuclear instrumentation requiring stable component supply under extended temperature and radiation exposure conditions.
Supply support for JANS1N4122D-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 JANS1N4122D-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 Zener diode product line, engineered specifically for precision voltage reference applications in harsh-environment electronics where parametric stability and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANS1N4122D-1/TR?
JANS1N4122D-1/TR has a nominal Zener voltage of 36.0 V with a guaranteed tolerance of ±1% at 250 mA test current, as specified in the Microsemi T4-LDS-0245-2 datasheet. This tight tolerance eliminates the need for external trimming in precision reference circuits and supports repeatable performance across production lots.
Is JANS1N4122D-1/TR radiation hardened?
Yes, JANS1N4122D-1/TR is inherently radiation hard per Microsemi MicroNote 050 and qualified to JANS level under MIL-PRF-19500/435. Its metallurgically bonded structure and hermetic DO-35 package provide proven tolerance to total ionizing dose (TID), making JANS1N4122D-1/TR suitable for low-earth orbit satellite systems and nuclear instrumentation.
What is the maximum operating temperature for JANS1N4122D-1/TR?
JANS1N4122D-1/TR is rated for junction and storage temperatures from –65 °C to +175 °C. Its power dissipation must be linearly derated from 500 mW starting at 50 °C lead temperature, reaching zero at 175 °C. This enables JANS1N4122D-1/TR deployment in downhole telemetry tools and avionics enclosures with minimal thermal margin.
Does JANS1N4122D-1/TR have low noise performance?
Yes, JANS1N4122D-1/TR delivers a noise density of 1 µV/√Hz at 36 V and 250 mA, per Figure 1 and Table on page 3 of the T4-LDS-0245-2 datasheet. This ultra-low noise characteristic makes JANS1N4122D-1/TR ideal for precision analog references in instrumentation amplifiers and high-resolution data acquisition systems.
What does the "TR" suffix indicate in JANS1N4122D-1/TR?
The "TR" suffix in JANS1N4122D-1/TR denotes tape-and-reel packaging per EIA-296 standard, enabling automated placement in high-volume manufacturing. This format is standard for JANS1N4122D-1/TR and supports consistent feeding in pick-and-place systems without manual handling or contamination risk.
JANS1N4122D-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 (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4122D-1/TR FAQ
1.How can I place an order for JANS1N4122D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4122D-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 JANS1N4122D-1/TR reliable?
The price and inventory of JANS1N4122D-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 JANS1N4122D-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4122D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4122D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4122D-1/TR?
JANS1N4122D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4122D-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 JANS1N4122D-1/TR?
For technical support, including JANS1N4122D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4122D-1/TR requirements.
6.How does Aetrix verify that JANS1N4122D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4122D-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 JANS1N4122D-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4122D-1/TR?
All JANS1N4122D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4122D-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 JANS1N4122D-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4122D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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