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Microchip Technology JANTX1N4621-1/TR
- Part No.:
- JANTX1N4621-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4621-1/TR.pdf
- Description:
- DIODE ZENER 3.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,779
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Product details
Overview
JANTX1N4621-1/TR from Microsemi is a 500 mW, 3.6 V ±5% metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation. It delivers 250 mA Zener test current, 1700 Ω dynamic impedance at IZT, and operates across –65 °C to +175 °C junction temperature range in precision reference and power-supply feedback circuits.
For engineers reviewing the JANTX1N4621-1/TR datasheet, JANTX1N4621-1/TR pinout, JANTX1N4621-1/TR application, or JANTX1N4621-1/TR equivalent, key selection criteria include its MIL-qualified reliability grade, low noise density (1 µV/√Hz), tight thermal coefficient (–0.065 %/°C), and axial-leaded DO-35 mechanical compatibility with legacy through-hole designs.
Technical Context
This Zener diode operates in reverse breakdown with cathode-banded polarity, requiring the banded end to be biased positive relative to the anode for regulation. Its metallurgical bond ensures stable voltage output under thermal cycling and radiation exposure, supporting operation up to 175 °C junction temperature.
The device exhibits a maximum reverse leakage current of 2.0 µA at 2.0 V and maintains 3.6 V regulation at 250 mA test current. Its dynamic impedance of 1700 Ω at IZT and temperature coefficient of –0.065 %/°C enable predictable performance in analog reference and overvoltage clamp applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.6 V ±5% at 250 mA - defines nominal regulation point with tolerance suitable for military-grade reference design. |
| Power Dissipation | 500 mW at 25 °C - supports stable regulation in compact layouts with linear derating to zero at 175 °C. |
| Dynamic Impedance ZZT | 1700 Ω at IZT - indicates moderate AC impedance affecting regulation stability under varying load currents. |
| Temperature Coefficient αVZ | –0.065 %/°C - enables predictable VZ drift in wide-temperature environments like avionics or downhole electronics. |
| Noise Density ND | 1 µV/√Hz - provides ultra-low broadband noise critical for precision analog references and sensor excitation. |
| Reverse Leakage IR | 2.0 µA at 2.0 V - ensures minimal parasitic current in standby or low-power bias networks. |
| Junction Temperature Range | –65 °C to +175 °C - qualifies for extreme-environment deployment including aerospace and defense 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; lead length 1.0–1.5 inches (25.4–38.1 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased during regulation. |
| Cathode (banded end) | Zener regulation output / voltage reference node | Banded end must be held at higher potential than anode to enter breakdown and regulate at 3.6 V. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for defense and space programs requiring assured reliability. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and radiation, improving long-term parameter stability. |
| Ultra-low noise density (1 µV/√Hz) | Enables use in low-noise voltage references for ADCs, DACs, and precision instrumentation without added filtering. |
| Hermetic glass DO-35 package | Provides moisture and contaminant immunity essential for mission-critical systems operating in harsh environments. |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Reduces handling precautions and eliminates need for ESD-protected workstations during assembly. |
Applications
| Aerospace Power Monitoring | Defense System Reference Voltage |
|---|---|
Use Scenario: Monitoring regulated bus voltage in satellite power distribution units under thermal vacuum conditions. IC Role / Device Role / Timing Role: Zener diode providing stable 3.6 V reference for ADC input scaling and comparator threshold setting. Use Value: Maintains ±5% regulation across –65 °C to +175 °C and survives total ionizing dose >100 krad(Si), ensuring data integrity over mission lifetime. | Use Scenario: Biasing precision op-amps in radar receiver front-end signal conditioning modules. IC Role / Device Role / Timing Role: Low-noise 3.6 V reference source replacing higher-drift alternatives in analog signal chains. Use Value: 1 µV/√Hz noise density minimizes baseline ripple on RF detector outputs, preserving dynamic range. |
| Industrial Control Loop Clamp | Avionics Sensor Excitation |
Use Scenario: Overvoltage protection for 4–20 mA current loop transmitters exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Shunt regulator clamping loop voltage to prevent damage to downstream DACs and isolators. Use Value: 500 mW power rating and 1700 Ω dynamic impedance allow safe dissipation of transient energy without latch-up. | Use Scenario: Providing excitation voltage to strain-gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Stable 3.6 V reference enabling ratiometric measurement accuracy independent of supply variation. Use Value: –0.065 %/°C temperature coefficient limits bridge offset drift to <0.1% FS over –55 °C to +125 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4621US | Same 3.6 V Zener voltage and DO-35 package but commercial-grade (non-military); RoHS-compliant matte-tin plating. | Lacks MIL-PRF-19500/435 qualification; unsuitable for JANTX-requiring programs. | Select when cost, RoHS compliance, or volume production outweighs military screening requirements. |
| JANTXV1N4621-1 | Identical electrical specs but qualified to JANTXV level - includes extended environmental testing (e.g., burn-in, life test) beyond JANTX. | Required for programs specifying JANTXV-level assurance (e.g., NASA Class S, DoD critical subsystems). | Select when higher reliability assurance, longer qualification records, or tighter lot traceability are mandated. |
Compared with JANTX1N4621-1/TR, 1N4621US offers RoHS compliance and lower cost but no military qualification, while JANTXV1N4621-1 adds burn-in and life-test validation for mission-critical deployments where failure risk must be minimized.
Availability
JANTX1N4621-1/TR is available at Aetrix Electronics and suitable for aerospace power monitoring, defense system reference voltage generation, and industrial control loop clamp applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N4621-1/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 1N46xx-1 series was designed specifically to meet MIL-PRF-19500/435 requirements for ruggedized, low-noise Zener regulation in safety-critical systems where parameter stability under radiation and thermal stress is mandatory.
FAQ
What is the Zener voltage tolerance for JANTX1N4621-1/TR?
JANTX1N4621-1/TR has a nominal Zener voltage of 3.6 V with a standard tolerance of ±5%, as defined in the JEDEC-registered specification and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies at 25 °C with the diode in thermal equilibrium and is maintained across the full JANTX qualification screen.
Is JANTX1N4621-1/TR RoHS compliant?
No, JANTX1N4621-1/TR is not RoHS compliant. Per the nomenclature guide on page 2 of T4-LDS-0245-2 Rev. 1, the "e3" suffix denotes RoHS compliance and is only available on commercial-grade versions (e.g., 1N4621-1e3). JANTX1N4621-1/TR uses tin-lead plating per MIL-STD-750 and retains lead content required for military reliability standards.
What is the maximum reverse leakage current for JANTX1N4621-1/TR?
The maximum reverse leakage current (IR) for JANTX1N4621-1/TR is 2.0 µA at VR = 2.0 V, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value is measured at 25 °C and reflects the device's ability to maintain low standby current in clamp or reference configurations.
Does JANTX1N4621-1/TR require special handling for ESD sensitivity?
No, JANTX1N4621-1/TR is non-sensitive to ESD per MIL-STD-750 Method 1020, as stated in the Applications/Benefits section on page 1 of T4-LDS-0245-2 Rev. 1. This eliminates the need for ESD-protective packaging, wrist straps, or ionizers during standard handling and assembly operations.
What is the thermal resistance junction-to-lead for JANTX1N4621-1/TR?
The thermal resistance junction-to-lead (RθJL) for JANTX1N4621-1/TR is 250 °C/W when measured with 3/8 inch (10 mm) lead length from the body, as listed in the Maximum Ratings table on page 1 of T4-LDS-0245-2 Rev. 1. This value supports thermal modeling for PCB layout and heatsinking decisions in high-reliability power regulation circuits.
JANTX1N4621-1/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:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1700 Ohms
- Current - Reverse Leakage @ Vr:
- 3.5 µA @ 2 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)
JANTX1N4621-1/TR FAQ
1.How can I place an order for JANTX1N4621-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4621-1/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 JANTX1N4621-1/TR reliable?
The price and inventory of JANTX1N4621-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4621-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4621-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4621-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4621-1/TR?
JANTX1N4621-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4621-1/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 JANTX1N4621-1/TR?
For technical support, including JANTX1N4621-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4621-1/TR requirements.
6.How does Aetrix verify that JANTX1N4621-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4621-1/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 JANTX1N4621-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4621-1/TR?
All JANTX1N4621-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4621-1/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 JANTX1N4621-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4621-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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