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Microchip Technology JANTX1N4621C-1
- Part No.:
- JANTX1N4621C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4621C-1.pdf
- Description:
- DIODE ZENER 3.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,125
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Product details
Overview
JANTX1N4621C-1 from Microsemi is a 500 mW, 3.6 V ±2% metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4621C-1 datasheet, JANTX1N4621C-1 pinout, JANTX1N4621C-1 application, or JANTX1N4621C-1 equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification status - critical for precision reference and ruggedized bias design.
Technical Context
The JANTX1N4621C-1 operates as a reverse-biased voltage reference with 3.6 V nominal Zener voltage at 250 mA test current, exhibiting -0.065 %/°C temperature coefficient and 1700 Ω dynamic impedance (ZZT) at IZT. Its internal metallurgical bond ensures stable breakdown characteristics under thermal cycling.
Designed for operation across -65 °C to +175 °C junction temperature range, it delivers 1 μV/√Hz noise density at low voltages and supports regulated output with ≤3.5 μA reverse leakage at VR = 2.0 V - enabling use in low-noise analog references and hardened sensor bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.6 V ±2% at 250 mA - precise reference point for low-voltage regulation circuits |
| Power Dissipation | 500 mW @ TC = 25 °C - supports continuous operation in compact axial-leaded layouts |
| Dynamic Impedance ZZT | 1700 Ω at IZT = 250 mA - defines regulation stiffness under load variation |
| Temp Coefficient αVZ | -0.065 %/°C - enables predictable drift compensation in wide-temperature systems |
| Noise Density ND | 1 μV/√Hz - minimal broadband noise for precision analog reference applications |
| Reverse Leakage IR | ≤3.5 μA @ VR = 2.0 V - ensures low standby current in always-on bias networks |
| Max Zener Current IZM | 83 mA - sets upper limit for safe DC regulation without thermal runaway |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package; cathode indicated by band; tin-lead plating; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit common; establishes reference node for regulated output |
| Cathode | Zener breakdown terminal / regulated voltage output | Banded end; supplies stable 3.6 V when reverse biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense deployments requiring extended lifetime and radiation tolerance |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and mechanical stress |
| 1 μV/√Hz noise density | Enables use in low-noise instrumentation references without external filtering |
| Hermetic glass DO-35 package | Prevents moisture ingress and long-term parameter drift in harsh environmental conditions |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Allows handling without special ESD controls during assembly and field maintenance |
Applications
| Aerospace Power Conditioning | Defense System Bias Networks |
|---|---|
Use Scenario: Regulating reference voltage for analog-to-digital converter (ADC) front-end in satellite telemetry modules operating across -55 °C to +125 °C. IC Role / Device Role / Timing Role: Precision Zener reference providing stable 3.6 V node for ADC voltage reference input. Use Value: -0.065 %/°C tempco and 2% tolerance ensure <±15 mV total drift over full temperature range - meeting MIL-STD-1540B accuracy requirements. | Use Scenario: Establishing stable bias for RF amplifier stages in tactical radio transceivers exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: Low-noise Zener regulator supplying clean 3.6 V to GaAs FET gate bias networks. Use Value: 1 μV/√Hz noise density prevents AM sideband degradation in 30–512 MHz transmit paths - validated per MIL-STD-461G CS114. |
| Avionics Sensor Signal Conditioning | Radiation-Hardened Instrumentation |
Use Scenario: Providing excitation voltage for strain gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Stable Zener source driving Wheatstone bridge with matched tempco compensation. Use Value: Matched -0.065 %/°C coefficient minimizes bridge offset drift vs. silicon strain gauges - achieving <0.05% FS error over -55 °C to +85 °C. | Use Scenario: Voltage reference in nuclear reactor monitoring electronics requiring TID tolerance >100 krad(Si). IC Role / Device Role / Timing Role: Radiation-hardened Zener reference maintaining regulation after proton and gamma exposure. Use Value: Inherent radiation hardness per Microsemi MicroNote 050 eliminates need for shielding or derating - certified to JANS level for space-grade deployment. |
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 | Same electrical specs but in DO-213AA surface-mount package; no axial leads | Required for automated SMT assembly; unsuitable for through-hole prototyping or manual repair | Select when board space constraints or reflow-only production demand SMT packaging |
| JAN1N4621C-1 | Identical electrical and mechanical specs but qualified only to JAN level (lower screening than JANTX) | Approved for commercial-space and non-critical avionics; not cleared for flight-critical subsystems | Select when cost sensitivity outweighs full JANTX screening requirements |
Compared with JANTX1N4621C-1, the 1N4621US-1 offers identical regulation performance in a surface-mount form factor ideal for high-density PCBs, while JAN1N4621C-1 provides reduced cost and screening depth - making both viable alternatives depending on assembly method and qualification tier requirements.
Availability
JANTX1N4621C-1 is available at Aetrix Electronics and suitable for aerospace power conditioning, defense system bias networks, and avionics sensor signal conditioning requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for JANTX1N4621C-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 1N46xx-1 series was developed specifically for military-grade voltage regulation where hermetic sealing, radiation tolerance, and extreme temperature stability are mandatory - targeting flight-critical and mission-essential electronics.
FAQ
What is the Zener voltage tolerance of JANTX1N4621C-1?
JANTX1N4621C-1 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its nomenclature. This means its nominal 3.6 V Zener voltage falls within 3.528 V to 3.672 V at 250 mA test current and 25 °C ambient - meeting tight regulation needs in precision analog circuits where standard ±5% parts would introduce unacceptable error.
Is JANTX1N4621C-1 RoHS compliant?
No, JANTX1N4621C-1 is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants, not for JANTX-level qualified parts like JANTX1N4621C-1, which retain tin-lead plating to meet MIL-STD-750 solderability and reliability requirements.
What is the maximum operating temperature for JANTX1N4621C-1?
JANTX1N4621C-1 supports a junction and storage temperature range of -65 °C to +175 °C. Its rated 500 mW power dissipation linearly derates to zero at 175 °C, allowing reliable operation in engine bay, radar transmitter, and space payload environments where thermal extremes exceed commercial component limits.
How does the noise performance of JANTX1N4621C-1 compare to higher-voltage Zeners?
JANTX1N4621C-1 delivers 1 μV/√Hz noise density - significantly lower than 6.8 V+ Zeners (which reach 40 μV/√Hz). This ultra-low noise arises from its low-voltage Zener mechanism and makes JANTX1N4621C-1 preferred for sub-5 V reference applications where noise directly impacts ADC ENOB and sensor resolution.
Can JANTX1N4621C-1 be used in surface-mount designs?
JANTX1N4621C-1 itself is axial-leaded DO-35 and not surface-mount compatible. However, Microsemi offers the functionally identical 1N4621US-1 in DO-213AA package - same 3.6 V ±2% Zener voltage and JANTX qualification - enabling direct migration to SMT layouts without circuit redesign.
JANTX1N4621C-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):
- 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 FAQ
1.How can I place an order for JANTX1N4621C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4621C-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 JANTX1N4621C-1 reliable?
The price and inventory of JANTX1N4621C-1 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 is usually 5 days.
3.What payment methods are accepted for JANTX1N4621C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4621C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4621C-1?
JANTX1N4621C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4621C-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 JANTX1N4621C-1?
For technical support, including JANTX1N4621C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4621C-1 requirements.
6.How does Aetrix verify that JANTX1N4621C-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4621C-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 JANTX1N4621C-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4621C-1?
All JANTX1N4621C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4621C-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 JANTX1N4621C-1 part is unused and in its original packaging.
Return procedure for JANTX1N4621C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4621C-1 Tags
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MMBZ5240B-7-F
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