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Microchip Technology JANTX1N4621C-1/TR
- Part No.:
- JANTX1N4621C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4621C-1/TR.pdf
- Description:
- DIODE ZENER 3.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,125
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Product details
Overview
JANTX1N4621C-1/TR from Microsemi is a 500 mW, 3.6 V Zener diode in DO-35 glass package with 2% voltage tolerance, metallurgically bonded construction, and MIL-PRF-19500/435 JANTX qualification for high-reliability voltage regulation in aerospace power conditioning circuits.
For engineers reviewing the JANTX1N4621C-1/TR datasheet, JANTX1N4621C-1/TR pinout, JANTX1N4621C-1/TR application, or JANTX1N4621C-1/TR equivalent, key selection criteria include Zener voltage (3.6 V), test current (250 mA), dynamic impedance (1700 Ω), noise density (1 µV/√Hz), and JANTX-level radiation-hardened reliability for space-grade analog reference design.
Technical Context
This axial-leaded Zener diode operates in reverse breakdown to maintain stable 3.6 V output across wide current (IZK to IZM) and temperature (-65 °C to +175 °C) ranges. Its metallurgical bond ensures low thermal resistance (RθJL = 250 °C/W) and minimal capacitance per Figure 3.
It delivers 1 µV/√Hz noise density at 3.6 V - among the lowest in the 1N46xx series - and exhibits -0.065 %/°C temperature coefficient, enabling precision low-voltage reference use where drift must be minimized below 4 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.6 V @ 250 mA - precise regulation point for low-voltage biasing and reference generation |
| Power Dissipation | 500 mW - supports continuous operation up to 25 °C ambient before linear derating begins at 50 °C |
| Zener Impedance ZZT | 1700 Ω - defines voltage stability under varying load current near regulation knee |
| Noise Density | 1 µV/√Hz - enables ultra-low-noise analog references in sensitive instrumentation front-ends |
| Temp Coefficient αVZ | -0.065 %/°C - predictable negative drift allows compensation in precision voltage references |
| Reverse Leakage IR | 2.0 µA @ 2.0 V - ensures minimal standby current in low-power hold-up and sensing circuits |
| Max Regulator Current IZM | 83 mA - sets upper limit for sustained Zener conduction without exceeding 500 mW rating |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-glass package with cathode band marking; 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 | Ground-reference terminal | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener regulation output | Banded end - supplies regulated 3.6 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated for high-reliability aerospace and defense applications with full traceability and screening |
| Metallurgical bond construction | Enables robust thermal performance (RθJL = 250 °C/W) and long-term stability under thermal cycling |
| 1 µV/√Hz noise density | Supports low-noise analog references in precision ADC drivers and sensor signal chains |
| 2% Zener voltage tolerance (C suffix) | Reduces calibration burden in production systems requiring tight initial accuracy |
| Hermetic glass DO-35 package | Provides moisture immunity and radiation hardness per MicroNote 050 for space environments |
Applications
| Avionics Power Reference | Satellite Sensor Biasing |
|---|---|
Use Scenario: Providing stable 3.6 V reference for analog-to-digital converters in flight control computers. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC input scaling and DAC feedback loops. Use Value: -0.065 %/°C tempco and 1 µV/√Hz noise ensure <±0.5 LSB error over -55 °C to +125 °C operating range. | Use Scenario: Biasing photodiode and op-amp front-ends in Earth observation payload sensors. IC Role / Device Role / Timing Role: Low-drift, low-noise Zener regulator supplying clean analog supply rails. Use Value: Hermetic DO-35 package and JANTX qualification guarantee operation in total ionizing dose >100 krad(Si) environments. |
| Rad-Hard FPGA Configuration | Tactical Radio Voltage Clamp |
Use Scenario: Stabilizing configuration voltage for SRAM-based FPGAs in radiation-prone orbital platforms. IC Role / Device Role / Timing Role: Primary voltage clamp protecting FPGA VCCINT during power-up and transient events. Use Value: 500 mW power rating and 83 mA IZM allow safe clamping of 100 ms surges without degradation. | Use Scenario: Overvoltage protection and rail stabilization in handheld military radios operating from 6–12 V batteries. IC Role / Device Role / Timing Role: Zener shunt regulator maintaining constant 3.6 V for RF synthesizer PLL ICs. Use Value: 2% tolerance (C suffix) eliminates need for post-assembly trimming in field-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 |
|---|---|---|---|
| 1N4621US-1/TR | Same 3.6 V, 2% tolerance, but in surface-mount DO-213AA package; no axial leads | Requires PCB redesign for SMT assembly; lacks JANTX qualification | Select for commercial SMT volume production where MIL-spec is not required |
| JANTXV1N4621C-1/TR | Identical electrical specs but qualified to JANTXV level (enhanced screening, tighter parametric limits) | Approved for critical subsystems in manned spacecraft and missile guidance where failure risk is unacceptable | Select when system-level qualification mandates JANTXV-level testing and lot traceability |
Compared with JANTX1N4621C-1/TR, the 1N4621US-1/TR offers footprint reduction at the cost of reliability certification, while JANTXV1N4621C-1/TR provides stricter screening and lower defect probability for mission-critical functions - both require explicit validation against the target board's thermal and mechanical constraints.
Availability
JANTX1N4621C-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite sensor biasing, rad-hard FPGA configuration, and tactical radio voltage clamp applications requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JANTX1N4621C-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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N46xx series was developed specifically for military-grade Zener regulation in harsh-environment electronics, emphasizing radiation hardness, hermetic sealing, and extended temperature operation.
FAQ
What is the Zener voltage and tolerance of JANTX1N4621C-1/TR?
JANTX1N4621C-1/TR has a nominal Zener voltage of 3.6 V at 250 mA test current with ±2% tolerance (denoted by the "C" suffix). This tight tolerance reduces calibration overhead in precision analog systems and ensures consistent performance across production lots without individual trimming.
Is JANTX1N4621C-1/TR qualified to MIL-PRF-19500/435?
Yes, JANTX1N4621C-1/TR is fully qualified to MIL-PRF-19500/435 at the JANTX reliability level, including screening for vibration, thermal shock, and burn-in per military standards. This qualification confirms its suitability for high-integrity applications such as flight hardware and secure communications equipment.
What is the maximum power dissipation and derating behavior of JANTX1N4621C-1/TR?
JANTX1N4621C-1/TR 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, ensuring safe operation within thermal limits across extended environmental profiles.
Does JANTX1N4621C-1/TR have low-noise characteristics suitable for precision references?
Yes, JANTX1N4621C-1/TR delivers 1 µV/√Hz noise density at 3.6 V - the lowest in its 3–4 V Zener range - making it ideal for low-noise analog references in ADC drivers, sensor interfaces, and oscillator bias networks where spectral purity is critical.
What package type and marking does JANTX1N4621C-1/TR use?
JANTX1N4621C-1/TR 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 and complies with MIL-STD-750 solderability requirements using tin-lead or RoHS-compliant matte-tin plating.
JANTX1N4621C-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):
- 3.6 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1700 Ohms
- Current - Reverse Leakage @ Vr:
- 3.5 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4621C-1/TR FAQ
1.How can I place an order for JANTX1N4621C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4621C-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 JANTX1N4621C-1/TR reliable?
The price and inventory of JANTX1N4621C-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 JANTX1N4621C-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4621C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4621C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4621C-1/TR?
JANTX1N4621C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4621C-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 JANTX1N4621C-1/TR?
For technical support, including JANTX1N4621C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4621C-1/TR requirements.
6.How does Aetrix verify that JANTX1N4621C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4621C-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 JANTX1N4621C-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4621C-1/TR?
All JANTX1N4621C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4621C-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 JANTX1N4621C-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4621C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4621C-1/TR Tags
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