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Microchip Technology JANTX1N4620-1
- Part No.:
- JANTX1N4620-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4620-1.pdf
- Description:
- DIODE ZENER 3.3V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,179
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Product details
Overview
JANTX1N4620-1 from Microsemi is a 500 mW, 3.3 V ±5% metallurgically bonded glass Zener diode in DO-35 package, rated for junction temperatures from –65 °C to +175 °C and qualified to MIL-PRF-19500/435 JANTX level. It delivers stable voltage regulation with 1650 Ω dynamic impedance at 250 mA test current and 3.5 µA max reverse leakage at 1.5 V, used in precision reference and power supply feedback circuits.
For engineers reviewing the JANTX1N4620-1 datasheet, JANTX1N4620-1 pinout, JANTX1N4620-1 application, or JANTX1N4620-1 equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (250 °C/W junction-to-lead), noise density (1 µV/√Hz), and MIL-qualified reliability for aerospace and defense systems.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-biased breakdown mode, with cathode indicated by band and intended for banded-end-positive polarity. Its metallurgical bond construction ensures low noise and high reliability under thermal cycling and radiation exposure.
The JANTX1N4620-1 exhibits a temperature coefficient of –0.075 %/°C and supports stable regulation across 250 mA test current and 85 mA maximum Zener current, with minimal capacitance (<2 pF typical) and non-ESD-sensitive behavior per MIL-STD-750 method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.3 V ±5% at 250 mA - defines nominal regulation point with tight tolerance for reference stability |
| Power Dissipation | 500 mW @ 25 °C - sets maximum continuous thermal load before derating begins at 50 °C |
| Dynamic Impedance ZZT | 1650 Ω @ 250 mA - determines output voltage variation under load changes |
| Reverse Leakage IR | 3.5 µA @ 1.5 V - ensures low standby current in bias networks |
| Noise Density | 1 µV/√Hz - enables use in low-noise analog references and sensor excitation |
| Temp Coefficient αVZ | –0.075 %/°C - quantifies drift direction and magnitude over operating temperature range |
| Junction Temp Range | –65 °C to +175 °C - supports operation in extreme environments including space and engine compartments |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead plating; cathode identified by color band; weight ≈0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during regulation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated voltage node; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace, defense, and high-reliability industrial systems |
| Metallurgical bond construction | Reduces microphonic noise and improves long-term parameter stability under thermal stress |
| Low noise density (1 µV/√Hz) | Enables use in precision analog references without additional filtering |
| Hermetic glass DO-35 package | Prevents moisture ingress and ensures parametric consistency over 20+ year lifetimes |
| Non-ESD-sensitive per MIL-STD-750 | Eliminates need for ESD handling controls during assembly and testing |
Applications
| Avionics Power Reference | Satellite DC-DC Feedback |
|---|---|
Use Scenario: Providing stable 3.3 V reference for ADCs and DACs in flight control computers. IC Role / Device Role / Timing Role: Precision voltage reference source for analog signal conditioning. Use Value: ±5% VZ tolerance and –0.075 %/°C tempco ensure <±10 mV drift over –55 °C to +125 °C operating range. | Use Scenario: Regulating feedback node in isolated 3.3 V DC-DC converters on LEO satellite payloads. IC Role / Device Role / Timing Role: Zener shunt regulator in secondary-side error amplifier loop. Use Value: Radiation-hardened construction and 175 °C max junction temperature support mission-critical operation in vacuum and thermal cycling. |
| Ground Vehicle ECUs | Tactical Radio Bias Networks |
Use Scenario: Generating stable bias voltage for CAN transceiver reference inputs in automotive engine control units. IC Role / Device Role / Timing Role: Low-noise Zener reference for communication interface ICs. Use Value: 1 µV/√Hz noise density prevents corruption of differential bus signaling in noisy 12 V vehicle electrical systems. | Use Scenario: Supplying regulated bias to RF front-end LNAs and mixers in handheld military radios. IC Role / Device Role / Timing Role: Low-capacitance (≈2 pF) voltage clamp and reference generator. Use Value: Minimal capacitance avoids loading sensitive RF nodes while maintaining regulation under pulsed current loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4620US | Same 3.3 V rating and DO-35 package but commercial-grade (non-MIL); RoHS-compliant matte-tin plating | Lacks JANTX qualification and radiation hardness; suitable only for non-mission-critical industrial designs | Select when cost, RoHS compliance, and volume availability outweigh MIL-spec requirements |
| JAN1N4620-1 | Identical electrical specs and DO-35 package; differs only in reliability screening level (JAN vs JANTX) | JAN level has less stringent burn-in and life-test requirements than JANTX; lower confidence in long-term field reliability | Select JAN version only for prototyping or non-flight hardware where full JANTX screening is not mandated |
Compared with JANTX1N4620-1, the 1N4620US offers RoHS compliance and lower cost but no MIL qualification, while JAN1N4620-1 provides identical performance with reduced reliability assurance-making JANTX1N4620-1 the optimal choice for deployed aerospace and defense systems requiring verified lifetime performance.
Availability
JANTX1N4620-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite DC-DC feedback, and ground vehicle ECU applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N4620-1 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 JANTX1N4620-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, designed specifically for precision voltage regulation in harsh-environment electronics where parametric stability, radiation tolerance, and long-term reliability are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4620-1?
JANTX1N4620-1 has a nominal Zener voltage of 3.3 V with a ±5% tolerance, measured at 250 mA test current and 25 °C ambient. This tolerance is standard for the JEDEC-registered 1N4614–1N4627 series unless otherwise marked with C (±2%) or D (±1%) suffixes. The JANTX1N4620-1 does not carry such a suffix and therefore adheres to the base ±5% specification.
Is JANTX1N4620-1 suitable for surface-mount applications?
No, JANTX1N4620-1 is packaged in the axial-leaded DO-35 (DO-204AH) glass case and is not a surface-mount device. Surface-mount variants exist under different part numbers-such as 1N4620UR-1 in DO-213AA or 1PMT4620 in DO-216-but JANTX1N4620-1 requires through-hole mounting with 3/8″ lead length for proper thermal management per its RθJL = 250 °C/W rating.
What is the maximum Zener current IZM for JANTX1N4620-1?
The maximum Zener current IZM for JANTX1N4620-1 is 85 mA, derived from its 500 mW power rating and 3.3 V nominal Zener voltage (IZM = PM(AV)/VZ ≈ 0.5 W / 3.3 V). This value aligns with the "MAXIMUM ZENER CURRENT IZM" column in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1, which lists 85.0 mA for JANTX1N4620-1.
Does JANTX1N4620-1 require derating above 25 °C ambient?
Yes, JANTX1N4620-1 must be linearly derated starting at 25 °C ambient temperature on a typical PCB, reaching zero power dissipation at 175 °C. Per Note 2 on page 2 of T4-LDS-0245-2, the 500 mW rating applies only at 25 °C; above that, power must decrease at 3.33 mW/°C (0.5 W ÷ 150 °C) to maintain safe junction temperature. Derating is mandatory for reliable operation in elevated-temperature environments.
How is polarity marked on JANTX1N4620-1?
JANTX1N4620-1 uses a single color band to indicate the cathode terminal, consistent with industry-standard diode marking. The banded end must be held positive with respect to the unmarked (anode) end during Zener regulation operation. This polarity marking is explicitly stated in the MECHANICAL and PACKAGING section on page 2 of T4-LDS-0245-2 Rev. 1 and applies identically to all devices in the 1N4614–1N4627 series, including JANTX1N4620-1.
JANTX1N4620-1 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):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1650 Ohms
- Current - Reverse Leakage @ Vr:
- 3.5 µA @ 1.5 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)
JANTX1N4620-1 FAQ
1.How can I place an order for JANTX1N4620-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4620-1 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 JANTX1N4620-1 reliable?
The price and inventory of JANTX1N4620-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4620-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4620-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4620-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4620-1?
JANTX1N4620-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4620-1 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 JANTX1N4620-1?
For technical support, including JANTX1N4620-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4620-1 requirements.
6.How does Aetrix verify that JANTX1N4620-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4620-1 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 JANTX1N4620-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4620-1?
All JANTX1N4620-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4620-1, 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 JANTX1N4620-1 part is unused and in its original packaging.
Return procedure for JANTX1N4620-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4620-1 Tags
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