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Microchip Technology JANTXV1N4121D-1
- Part No.:
- JANTXV1N4121D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTXV1N4121D-1.pdf
- Description:
- DIODE ZENER 33V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,044
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Product details
Overview
JANTXV1N4121D-1 from Microsemi is a 33 V, 1% tolerance, 500 mW 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 JANTXV1N4121D-1 datasheet, JANTXV1N4121D-1 pinout, JANTXV1N4121D-1 application, or JANTXV1N4121D-1 equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification details essential for precision analog reference and overvoltage protection design.
Technical Context
This device operates as a two-terminal voltage reference with cathode-banded polarity, requiring reverse-bias operation where the banded end is positive relative to the anode. Its metallurgical bond construction ensures stable breakdown characteristics across -65 °C to +175 °C junction temperature range.
It delivers 33 V regulation at 250 mA test current (IZT), with 200 Ω maximum dynamic impedance (ZZT) and +0.095 %/°C temperature coefficient - enabling predictable drift compensation in stabilized power rails and precision sensor biasing circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 33.0 V ±1% at 250 mA - defines precise regulation point for feedback loops and reference generation |
| Power Dissipation PM(AV) | 500 mW - supports continuous regulation in compact axial-leaded layouts without forced cooling |
| Dynamic Impedance ZZT | 200 Ω max at IZT - limits output voltage variation under load transients in regulated supplies |
| Temperature Coefficient αVZ | +0.095 %/°C - enables accurate thermal drift modeling for high-stability references |
| Noise Density ND | 40 μV/√Hz max - ensures low-noise performance in analog signal conditioning and precision measurement |
| Reverse Leakage IR | 10 μA max at 25.1 V - guarantees minimal quiescent current in standby or low-power modes |
| Junction Temp Range TJ | -65 °C to +175 °C - validated for extreme-environment deployment in avionics and space-grade systems |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead plating; cathode indicated by band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias current sink | Connected to system ground or lower-potential node during Zener operation |
| Cathode (banded end) | Regulated output terminal | Provides stable 33 V reference when biased above breakdown with series resistor |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTXV qualification | Validated reliability for mission-critical aerospace and defense applications with full lot traceability |
| 1% Zener voltage tolerance (suffix D) | Reduces calibration overhead and improves system-level accuracy without external trimming |
| Metallurgical bond construction | Ensures long-term parameter stability and resistance to thermal cycling-induced degradation |
| Low noise density (≤40 μV/√Hz) | Minimizes interference in sensitive analog front-ends such as ADC references and op-amp bias networks |
| Hermetic glass encapsulation | Prevents moisture ingress and parametric shift in high-humidity or vacuum environments |
Applications
| Avionics Power Regulation | Satellite Sensor Biasing |
|---|---|
Use Scenario: Regulating auxiliary 33 V rail in flight control computer power distribution units. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing stable bias for isolated DC-DC converter feedback networks. Use Value: JANTXV1N4121D-1's ±1% tolerance and +0.095 %/°C TC enable <±2% total regulation error across -55 °C to +125 °C operating range without active compensation. | Use Scenario: Supplying precision bias voltage to radiation-hardened CMOS image sensor pixel arrays. IC Role / Device Role / Timing Role: Low-noise, high-stability Zener reference replacing bulkier IC-based solutions in SWaP-constrained payloads. Use Value: 40 μV/√Hz noise density and hermetic DO-35 package ensure signal integrity and lifetime reliability in LEO radiation environments. |
| Ground-Based Radar Receivers | Tactical Radio Transceiver References |
Use Scenario: Stabilizing local oscillator supply in S-band radar IF amplifiers subject to wide ambient swings. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant 33 V for GaAs FET bias networks under pulsed RF loading. Use Value: 500 mW rating and 200 Ω dynamic impedance limit voltage sag to <0.5 V during 100 mA transient loads, preserving gain flatness. | Use Scenario: Providing reference voltage for automatic gain control (AGC) circuitry in HF/VHF manpack radios. IC Role / Device Role / Timing Role: Precision voltage clamp defining AGC threshold in analog signal chains exposed to ESD and lightning-induced surges. Use Value: Non-sensitive ESD behavior per MIL-STD-750 Method 1020 and inherent radiation hardness reduce field failure rates in deployed units. |
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, 1% spec but in DO-213AA surface-mount package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy chassis mounts | Select when board space is constrained and automated placement is available |
| JANS1N4121D-1 | Identical electrical specs but qualified to JANS (highest MIL-PRF-19500 level); higher screening and testing rigor | Required for spaceflight and nuclear-hardened systems; not cost-justified for airborne non-safety-critical use | Select only when JANS-level radiation tolerance and lot acceptance testing are mandated |
Compared with JANTXV1N4121D-1, the 1N4121US-1 offers footprint reduction at the expense of mechanical mounting flexibility, while JANS1N4121D-1 adds qualification overhead without electrical benefit - making JANTXV1N4121D-1 the optimal balance of reliability, cost, and design compatibility for high-integrity avionics.
Availability
JANTXV1N4121D-1 is available at Aetrix Electronics and suitable for avionics power regulation, satellite sensor biasing, ground-based radar receivers, and tactical radio transceiver references requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for JANTXV1N4121D-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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The JANTXV1N4121D-1 belongs to Microsemi's MIL-qualified Zener diode family engineered specifically for precision voltage regulation in harsh-environment electronic systems where parameter stability and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage and tolerance of JANTXV1N4121D-1?
JANTXV1N4121D-1 has a nominal Zener voltage of 33.0 V with ±1% tolerance (indicated by the 'D' suffix). This specification is measured at 250 mA test current (IZT) and 25 °C ambient, and is guaranteed across its qualified military temperature range. The tight tolerance reduces need for post-calibration in precision analog circuits.
Is JANTXV1N4121D-1 RoHS compliant?
No - JANTXV1N4121D-1 is not RoHS compliant. Per the manufacturer's documentation, RoHS-compliant versions (suffix e3) are available only for commercial-grade variants (e.g., 1N4121D-1e3), not for JANTXV or higher military reliability levels. JANTXV1N4121D-1 uses traditional tin-lead plating per MIL-STD-750.
What is the maximum power dissipation and derating behavior of JANTXV1N4121D-1?
JANTXV1N4121D-1 has a rated average power dissipation of 500 mW at 25 °C lead temperature. Power must be linearly derated starting at 50 °C, reaching zero at 175 °C. On a typical FR4 board, derating begins at 25 °C ambient - critical for thermal design in enclosed avionics enclosures.
How is polarity marked on JANTXV1N4121D-1, and how must it be connected?
JANTXV1N4121D-1 uses a cathode band to indicate polarity. For Zener regulation, the banded (cathode) end must be held positive relative to the anode - i.e., reverse-biased. Forward conduction occurs at ~1.1 V, but regulation only functions in reverse breakdown mode above 33 V.
What does the 'JANTXV' prefix signify for JANTXV1N4121D-1?
The 'JANTXV' prefix indicates qualification per MIL-PRF-19500/435 at the JANTXV reliability level - including extended temperature screening (-65 °C to +175 °C), burn-in, and lot traceability. It sits between JANTX (lower screening) and JANS (space-grade), making JANTXV1N4121D-1 appropriate for high-integrity airborne systems.
JANTXV1N4121D-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:
- ±1%
- 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)
JANTXV1N4121D-1 FAQ
1.How can I place an order for JANTXV1N4121D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4121D-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 JANTXV1N4121D-1 reliable?
The price and inventory of JANTXV1N4121D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4121D-1 is usually 5 days.
3.What payment methods are accepted for JANTXV1N4121D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4121D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4121D-1?
JANTXV1N4121D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4121D-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 JANTXV1N4121D-1?
For technical support, including JANTXV1N4121D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4121D-1 requirements.
6.How does Aetrix verify that JANTXV1N4121D-1 is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4121D-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 JANTXV1N4121D-1 meets industry standards.
7.What is the process for return or replacement of JANTXV1N4121D-1?
All JANTXV1N4121D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4121D-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 JANTXV1N4121D-1 part is unused and in its original packaging.
Return procedure for JANTXV1N4121D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4121D-1 Tags
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