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Microchip Technology JANTXV1N4121C-1
- Part No.:
- JANTXV1N4121C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTXV1N4121C-1.pdf
- Description:
- DIODE ZENER 33V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,525
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Product details
Overview
JANTXV1N4121C-1 from Microsemi is a 500 mW, 33 V, ±2% tolerance metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTXV level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTXV1N4121C-1 datasheet, JANTXV1N4121C-1 pinout, JANTXV1N4121C-1 application, or JANTXV1N4121C-1 equivalent, key selection criteria include Zener voltage accuracy (±2%), low noise density (≤40 µV/√Hz), radiation hardness, and hermetic DO-35 packaging for harsh-environment operation.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 33 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 mechanical stress.
Rated for junction temperatures from –65 °C to +175 °C and qualified to JANTXV reliability level, the JANTXV1N4121C-1 supports operation in high-radiation environments per Microsemi MicroNote 050 and meets MIL-STD-750 ESD immunity requirements without external protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 33 V ±2% at 250 mA - enables precise reference generation in regulated DC-DC feedback paths |
| Power Dissipation | 500 mW at 25 °C - supports stable regulation in compact, convection-cooled designs |
| Dynamic Impedance ZZT | 200 Ω at 250 mA - limits output voltage variation under load transients |
| Noise Density | ≤40 µV/√Hz - critical for low-noise analog references and precision instrumentation |
| Temp Coefficient αVZ | +0.095 %/°C - predictable positive drift simplifies temperature compensation in wide-range systems |
| Reverse Leakage IR | ≤10 µA at 25.1 V - ensures minimal quiescent current in standby or battery-powered circuits |
| Junction Temp Range | –65 °C to +175 °C - validated for extended operation in avionics, downhole, and space-grade electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by band; leads are tin-lead or RoHS-compliant matte-tin plated and solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; must be held at lower potential than cathode during regulation |
| Cathode | Zener regulation terminal | Banded end; connected to unregulated input rail; maintains 33 V drop across load when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTXV qualification | Guarantees screening, testing, and traceability for mission-critical aerospace and defense deployments |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration, ensuring long-term parametric stability |
| Hermetic glass DO-35 package | Prevents moisture ingress and corrosion in high-humidity or salt-spray environments without conformal coating |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for low-earth orbit and nuclear applications |
| Low capacitance (typ. <2 pF) | Minimizes high-frequency coupling into sensitive analog nodes and preserves signal integrity in RF-adjacent circuits |
Applications
| Aerospace Power Reference | Defense System Voltage Clamp |
|---|---|
Use Scenario: Providing stable 33 V reference for ADCs and DACs in satellite telemetry conditioning modules operating across –55 °C to +125 °C. IC Role / Device Role / Timing Role: Shunt voltage reference element in precision analog front-end circuitry. Use Value: ±2% tolerance and +0.095 %/°C TC enable <0.5% total error over full temperature range without calibration. | Use Scenario: Clamping transient overvoltage on 28 V DC distribution buses in military vehicle electronics exposed to load dump events. IC Role / Device Role / Timing Role: Primary overvoltage protection device in MIL-STD-1275-compliant power interface. Use Value: 500 mW rating and 200 Ω ZZT allow sustained clamping at 33 V with <100 ns response to 100 V spikes. |
| Nuclear Instrumentation Supply | Avionics Sensor Biasing |
Use Scenario: Generating stable bias voltage for radiation-hardened photomultiplier tube (PMT) anode chains in reactor monitoring systems. IC Role / Device Role / Timing Role: High-reliability Zener shunt regulator supplying graded HV bias rails. Use Value: Inherent radiation hardness eliminates need for shielding or derating, supporting >100 krad(Si) TID operation. | Use Scenario: Regulating excitation voltage for strain gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Low-noise voltage reference source for bridge excitation in closed-loop servo systems. Use Value: ≤40 µV/√Hz noise density prevents signal-to-noise degradation in microvolt-level bridge outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4121US-1 | Same 33 V ±2% spec but in DO-213AA surface-mount package; no axial leads | Requires PCB re-layout for SMT assembly; unsuitable for through-hole prototyping or wire-wrap | Select when automated SMT production and board space constraints outweigh manual assembly needs |
| JANS1N4121C-1 | Identical electrical specs and DO-35 package but qualified to JANS (highest MIL-PRF-19500 level) with full lot traceability | Required for spaceflight and nuclear safety-critical systems where JANTXV is insufficient | Choose only when JANS-level documentation, screening, and radiation assurance are mandated |
Compared with JANTXV1N4121C-1, the 1N4121US-1 offers identical regulation performance in a smaller footprint but sacrifices mechanical robustness and hand-solderability, while JANS1N4121C-1 delivers enhanced process control and radiation validation at higher cost and longer lead time.
Availability
JANTXV1N4121C-1 is available at Aetrix Electronics and suitable for aerospace power references, defense system voltage clamps, and nuclear instrumentation supplies requiring stable component supply with full MIL-PRF-19500 traceability and long-term obsolescence management.
Supply support for JANTXV1N4121C-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 components for aerospace, defense, and industrial markets.
The JANTXV1N4121C-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, designed specifically for precision voltage regulation in mission-critical systems where parametric stability, radiation tolerance, and hermetic reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance and test current for JANTXV1N4121C-1?
JANTXV1N4121C-1 has a nominal Zener voltage of 33 V with ±2% tolerance, measured at a Zener test current (IZT) of 250 mA. This tight tolerance ensures consistent regulation across production lots and supports high-accuracy feedback loops in regulated power supplies without trimming.
Is JANTXV1N4121C-1 suitable for high-radiation environments?
Yes, JANTXV1N4121C-1 is inherently radiation hard per Microsemi MicroNote 050 and qualified to MIL-PRF-19500/435 JANTXV level, making it suitable for low-earth orbit satellites and nuclear instrumentation where total ionizing dose (TID) resistance is required without additional shielding.
What is the maximum power dissipation and thermal derating behavior of JANTXV1N4121C-1?
JANTXV1N4121C-1 is rated for 500 mW average power dissipation at 25 °C lead temperature, linearly derated to zero at 175 °C. Derating begins at 50 °C, providing 375 mW at 87.5 °C - enabling reliable operation in convection-cooled avionics enclosures without forced airflow.
Does JANTXV1N4121C-1 have low noise performance for precision analog applications?
Yes, JANTXV1N4121C-1 exhibits ≤40 µV/√Hz noise density at its 33 V Zener voltage, significantly lower than standard Zeners. This enables use as a clean reference in high-resolution data acquisition systems, such as 16-bit+ ADC biasing, where noise-induced quantization error must be minimized.
What package type and marking does JANTXV1N4121C-1 use?
JANTXV1N4121C-1 uses the hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode indicated by a band. It is marked with the full part number "JANTXV1N4121C-1" and complies with MIL-STD-750 solderability requirements for both tin-lead and RoHS-compliant plating options.
JANTXV1N4121C-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):
- 33 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 25.1 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)
JANTXV1N4121C-1 FAQ
1.How can I place an order for JANTXV1N4121C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4121C-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 JANTXV1N4121C-1 reliable?
The price and inventory of JANTXV1N4121C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4121C-1 is usually 5 days.
3.What payment methods are accepted for JANTXV1N4121C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4121C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4121C-1?
JANTXV1N4121C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4121C-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 JANTXV1N4121C-1?
For technical support, including JANTXV1N4121C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4121C-1 requirements.
6.How does Aetrix verify that JANTXV1N4121C-1 is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4121C-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 JANTXV1N4121C-1 meets industry standards.
7.What is the process for return or replacement of JANTXV1N4121C-1?
All JANTXV1N4121C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4121C-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 JANTXV1N4121C-1 part is unused and in its original packaging.
Return procedure for JANTXV1N4121C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4121C-1 Tags
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Diodes Incorporated
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