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Microchip Technology JANTX1N4621D-1
- Part No.:
- JANTX1N4621D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4621D-1.pdf
- Description:
- DIODE ZENER 3.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,696
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Product details
Overview
JANTX1N4621D-1 from Microsemi is a 1% tolerance, 3.6 V, 500 mW 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 JANTX1N4621D-1 datasheet, JANTX1N4621D-1 pinout, JANTX1N4621D-1 application, or JANTX1N4621D-1 equivalent, key selection criteria include Zener voltage tolerance (±1%), dynamic impedance (1700 Ω @ 250 mA), noise density (1 µV/√Hz), temperature coefficient (–0.065 %/°C), and military-grade reliability qualification.
Technical Context
This Zener diode operates in reverse breakdown with cathode-banded polarity, delivering stable 3.6 V regulation across current (250 mA test point) and temperature (–65 °C to +175 °C) extremes. Its internal metallurgical bond ensures low thermal resistance (RθJL = 250 °C/W) and radiation hardness per MicroNote 050.
Designed for precision reference and low-noise biasing, it exhibits minimal capacitance (typical <1.5 pF at 0 V), low leakage (<2.0 µA @ 2.9 V), and tightly controlled temperature coefficient - critical for analog front-ends and voltage references in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.6 V ±1% @ 250 mA - enables precise voltage clamping in regulated power rails |
| Power Dissipation | 500 mW @ TL = 25 °C - supports continuous operation in compact axial-leaded layouts |
| Dynamic Impedance ZZT | 1700 Ω @ 250 mA - determines regulation stiffness under load transients |
| Noise Density | 1 µV/√Hz @ 250 mA - essential for low-noise analog references and sensor biasing |
| Temp Coefficient αVZ | –0.065 %/°C - ensures predictable drift in wide-temperature military systems |
| Reverse Leakage IR | ≤2.0 µA @ 2.9 V - minimizes standby current in battery-backed circuits |
| Junction Temp Range | –65 °C to +175 °C - validated for space, avionics, and downhole electronics |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node during Zener operation; must be negative relative to cathode |
| Cathode (banded end) | Zener regulation terminal | Connected to higher-potential node; reverse-biased to maintain 3.6 V reference |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for mission-critical aerospace and defense applications |
| 1% Zener voltage tolerance | Enables tighter system-level voltage margining without post-calibration |
| Metallurgical bond construction | Provides superior thermal stability and radiation hardness vs. epoxy-bonded alternatives |
| Low noise density (1 µV/√Hz) | Supports high-resolution ADC references and precision op-amp bias networks |
| Hermetic glass sealing | Ensures long-term parameter stability in humid, corrosive, or vacuum environments |
Applications
| Aerospace Power Conditioning | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary 3.6 V rail in satellite power management units exposed to thermal cycling and radiation. IC Role / Device Role / Timing Role: Zener diode providing primary voltage reference for DC-DC converter feedback and supervisor IC thresholds. Use Value: JANTX1N4621D-1's –65 °C to +175 °C junction range and radiation hardness ensure uninterrupted regulation over orbital lifetime. | Use Scenario: Biasing analog front-end circuitry in radar receiver modules operating in high-vibration battlefield environments. IC Role / Device Role / Timing Role: Low-noise voltage reference for RF amplifier bias networks and ADC driver stages. Use Value: 1 µV/√Hz noise density and 1% tolerance maintain signal integrity in sensitive LNA and mixer bias paths. |
| Avionics Sensor Interface | Tactical Radio Voltage Clamp |
Use Scenario: Providing stable excitation voltage for strain gauge bridges in flight control sensors. IC Role / Device Role / Timing Role: Precision Zener reference establishing bridge excitation level independent of supply variation. Use Value: –0.065 %/°C tempco and low leakage (<2 µA) minimize measurement drift across –55 °C to +125 °C operational envelope. | Use Scenario: Clamping transient overvoltage on 5 V logic rails in handheld tactical radios subjected to ESD and load dump events. IC Role / Device Role / Timing Role: Fast-response Zener clamp protecting microcontroller I/O and transceiver interfaces. Use Value: DO-35 mechanical robustness and MIL-qualified construction withstand repeated surge stress without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4621D-1 | Higher reliability screening (JANTXV level), tighter parametric limits, enhanced lot traceability | Required for Class H/V avionics where failure modes demand extended burn-in and radiation testing | Select when full JANTXV qualification per MIL-PRF-19500/435 is mandated |
| 1N4621UR-1 | Same electrical specs, but in DO-213AA surface-mount package (no axial leads) | Suitable for automated SMT assembly; not interchangeable in through-hole designs | Choose for space-constrained PCBs requiring reflow-compatible packaging |
Compared with JANTX1N4621D-1, the JANTXV variant adds screening rigor for ultra-high-reliability use, while the 1N4621UR-1 offers identical regulation performance in a surface-mount form factor - enabling layout flexibility without sacrificing voltage accuracy or noise performance.
Availability
JANTX1N4621D-1 is available at Aetrix Electronics and suitable for aerospace power conditioning, defense system reference, and avionics sensor interface applications requiring stable component supply across extended product lifecycles.
Supply support for JANTX1N4621D-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 1N46xx-1 series was designed specifically to meet MIL-PRF-19500/435 requirements for ruggedized, low-noise Zener regulation in mission-critical systems where parameter stability under extreme conditions is non-negotiable.
FAQ
What is the Zener voltage tolerance for JANTX1N4621D-1?
JANTX1N4621D-1 has a nominal Zener voltage of 3.6 V with ±1% tolerance, as indicated by the "D" suffix in the part number per Microsemi's nomenclature. This tight tolerance is verified per MIL-PRF-19500/435 screening and supports precision voltage reference applications where calibration margin is constrained.
Is JANTX1N4621D-1 RoHS compliant?
No, JANTX1N4621D-1 is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions (e.g., 1N4621D-1e3); military-grade variants like JANTX1N4621D-1 retain tin-lead plating per MIL-STD-750 to ensure solderability and reliability in high-reliability assemblies.
What is the maximum Zener current rating for JANTX1N4621D-1?
JANTX1N4621D-1 has a maximum Zener current (IZM) of 83 mA at 25 °C, derived from its 500 mW power rating and 3.6 V Zener voltage. Derating begins linearly above 50 °C lead temperature, reaching zero dissipation at 175 °C per Figure 2 in the datasheet.
How does the temperature coefficient of JANTX1N4621D-1 affect its performance?
JANTX1N4621D-1 has a temperature coefficient of –0.065 %/°C, meaning its Zener voltage decreases by approximately 2.34 mV per °C rise. This predictable negative drift allows designers to compensate in feedback networks or select complementary components for zero-drift references in wide-temperature applications.
Can JANTX1N4621D-1 be used as a substitute for JANS1N4621D-1?
No, JANTX1N4621D-1 cannot be substituted for JANS1N4621D-1 without design review. While both share identical electrical specs, JANS qualification requires additional radiation hardness testing and lot acceptance procedures per MIL-PRF-19500/435. JANTX is qualified for high-reliability use but lacks the full JANS-level screening required for space-grade applications.
JANTX1N4621D-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:
- ±1%
- 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)
JANTX1N4621D-1 FAQ
1.How can I place an order for JANTX1N4621D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4621D-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 JANTX1N4621D-1 reliable?
The price and inventory of JANTX1N4621D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4621D-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4621D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4621D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4621D-1?
JANTX1N4621D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4621D-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 JANTX1N4621D-1?
For technical support, including JANTX1N4621D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4621D-1 requirements.
6.How does Aetrix verify that JANTX1N4621D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4621D-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 JANTX1N4621D-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4621D-1?
All JANTX1N4621D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4621D-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 JANTX1N4621D-1 part is unused and in its original packaging.
Return procedure for JANTX1N4621D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4621D-1 Tags
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