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Microchip Technology JAN1N4621D-1
- Part No.:
- JAN1N4621D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4621D-1.pdf
- Description:
- DIODE ZENER 3.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,482
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Product details
Overview
JAN1N4621D-1 from Microsemi is a 500 mW, 3.6 V ±1% tolerance metallurgically bonded glass Zener diode in DO-35 package, qualified to JAN level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies, reference circuits, and overvoltage protection.
For engineers reviewing the JAN1N4621D-1 datasheet, JAN1N4621D-1 pinout, JAN1N4621D-1 application, or JAN1N4621D-1 equivalent, key selection factors include its 1% Zener voltage tolerance, 1700 Ω dynamic impedance at 250 mA test current, -0.065 %/°C temperature coefficient, and hermetically sealed axial-leaded construction for stable operation across -65 °C to +175 °C.
Technical Context
This Zener diode operates in reverse breakdown with cathode band indicating the positive terminal during regulation. Its metallurgical bond ensures low noise density (1 µV/√Hz typical at 3.6 V) and radiation hardness per Microsemi MicroNote 050.
It delivers precise voltage reference stability under varying load and temperature conditions, with thermal resistance junction-to-lead of 250 °C/W at 10 mm lead length and linear power derating from 500 mW at 25 °C to zero at 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.6 V ±1% at 250 mA - enables tight-tolerance reference generation in precision analog circuits |
| Power Dissipation | 500 mW at 25 °C - supports continuous regulation in compact, unheatsinked designs |
| Dynamic Impedance ZZT | 1700 Ω at IZT = 250 mA - defines output impedance in shunt regulation loop |
| Temperature Coefficient αVZ | -0.065 %/°C - ensures predictable drift direction and magnitude over operating range |
| Noise Density ND | 1 µV/√Hz - minimizes broadband noise injection into sensitive analog references |
| Max Reverse Current IR | 2.0 µA at VR = 3.5 V - guarantees low leakage in standby or low-power modes |
| Junction Temperature Range | -65 °C to +175 °C - validated for extreme-environment deployment without derating penalties |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed body; cathode indicated by single black band; tin-lead plating; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased input terminal | Connected to lower-potential node; carries full Zener current during regulation |
| Cathode | Regulated output terminal | Banded end; held at stable 3.6 V above anode when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for military/aerospace use with full traceability and screening |
| Metallurgical bonding | Eliminates interfacial voids to ensure long-term parameter stability under thermal cycling |
| 1% Zener voltage tolerance | Reduces need for external trimming in calibration-critical reference applications |
| Low noise density (1 µV/√Hz) | Preserves signal integrity in low-noise amplifiers and precision ADC reference paths |
| Hermetic glass encapsulation | Prevents moisture ingress and parametric shift in humid or corrosive environments |
Applications
| Aerospace Power Conditioning | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary rail in satellite DC-DC converters exposed to wide thermal swings and radiation. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 3.6 V bias for op-amps and comparators. Use Value: -0.065 %/°C TC and JANS-level qualification ensure minimal drift and guaranteed lifetime performance. | Use Scenario: Precision voltage reference in radar receiver front-end calibration circuitry. IC Role / Device Role / Timing Role: Low-noise Zener source for DAC offset correction and ADC reference scaling. Use Value: 1 µV/√Hz noise density prevents degradation of SNR in RF sampling paths. |
| Industrial Sensor Signal Chain | Nuclear Instrumentation |
Use Scenario: Biasing thermocouple amplifier stages in oil & gas downhole monitoring tools. IC Role / Device Role / Timing Role: Stable 3.6 V reference for instrumentation-grade op-amp gain-setting networks. Use Value: Hermetic DO-35 package withstands high-pressure, high-humidity borehole environments. | Use Scenario: Radiation-hardened voltage clamp in nuclear reactor control system analog interfaces. IC Role / Device Role / Timing Role: Overvoltage protector and reference stabilizer in safety-critical analog monitoring loops. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or redundancy. |
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 surface-mount DO-213AA package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or wire-wrap | Select when automated assembly and board space constraints outweigh manual handling needs |
| JANTXV1N4621D-1 | Identical electrical and mechanical specs, but qualified to higher JANTXV reliability level with extended screening | Required for mission-critical flight hardware where burn-in and lot acceptance testing are mandated | Select when program requirements exceed JAN-level screening per MIL-PRF-19500/435 |
Compared with JAN1N4621D-1, the 1N4621US-1 offers identical regulation performance in a space-saving SMT form factor, while JANTXV1N4621D-1 provides enhanced reliability assurance for flight-critical systems-neither is pin-compatible due to differing packages or screening levels.
Availability
JAN1N4621D-1 is available at Aetrix Electronics and suitable for aerospace power conditioning, defense system reference design, and industrial sensor signal chain applications requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JAN1N4621D-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 stringent military voltage regulation requirements, combining hermetic packaging, metallurgical bonding, and MIL-qualified screening for mission-critical analog reference stability.
FAQ
What is the Zener voltage tolerance of JAN1N4621D-1?
JAN1N4621D-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 achieved through post-process binning and verified during JAN-level qualification testing per MIL-PRF-19500/435.
Is JAN1N4621D-1 RoHS compliant?
No, JAN1N4621D-1 is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions (e.g., 1N4621D-1e3); JAN-level parts retain tin-lead plating per MIL-STD-750 method 2026 and are exempt from RoHS restrictions under defense procurement regulations.
What is the maximum Zener test current for JAN1N4621D-1?
The maximum Zener test current IZT for JAN1N4621D-1 is 250 mA, as specified in the Electrical Characteristics table on page 3 of the T4-LDS-0245-2 datasheet. This current establishes the operating point for measuring VZ, ZZT, and other parameters at 25 °C ambient.
How does the temperature coefficient affect JAN1N4621D-1 performance?
JAN1N4621D-1 has a temperature coefficient αVZ 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 multi-stage references or select complementary devices for zero-TC designs.
Can JAN1N4621D-1 be used in surface-mount designs?
No, JAN1N4621D-1 uses a DO-35 axial-leaded glass package and is not suitable for surface-mount assembly. For SMT equivalents, consider 1N4621US-1 (DO-213AA) or 1PMT4621 (DO-216), both sharing identical electrical specs but requiring different footprint and reflow profiles.
JAN1N4621D-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:
- 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)
JAN1N4621D-1 FAQ
1.How can I place an order for JAN1N4621D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4621D-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 JAN1N4621D-1 reliable?
The price and inventory of JAN1N4621D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4621D-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4621D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4621D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4621D-1?
JAN1N4621D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4621D-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 JAN1N4621D-1?
For technical support, including JAN1N4621D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4621D-1 requirements.
6.How does Aetrix verify that JAN1N4621D-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4621D-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 JAN1N4621D-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4621D-1?
All JAN1N4621D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4621D-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 JAN1N4621D-1 part is unused and in its original packaging.
Return procedure for JAN1N4621D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4621D-1 Tags
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