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Microchip Technology JAN1N4621-1
- Part No.:
- JAN1N4621-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4621-1.pdf
- Description:
- DIODE ZENER 3.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,328
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Product details
Overview
JAN1N4621-1 from Microsemi is a 500 mW, 3.6 V ±5% metallurgically bonded glass Zener diode in DO-35 package, designed for precision voltage regulation in high-reliability military and aerospace systems operating from -65°C to +175°C. It delivers stable regulation at 250 mA test current with 1700 Ω dynamic impedance and 2.0 µA reverse leakage at 3.6 V.
For engineers reviewing the JAN1N4621-1 datasheet, JAN1N4621-1 pinout, JAN1N4621-1 application, or JAN1N4621-1 equivalent, key selection criteria include Zener voltage tolerance, temperature coefficient (-0.065 %/°C), noise density (1 µV/√Hz), junction-to-lead thermal resistance (250 °C/W), and MIL-PRF-19500/435 JAN qualification level.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 3.6 V at 250 mA, exhibiting low noise density (1 µV/√Hz) and a negative temperature coefficient (-0.065 %/°C). Its metallurgical bond construction ensures mechanical stability under thermal cycling and shock.
The DO-35 axial-glass package enables hermetic sealing and supports operation across -65°C to +175°C junction temperature range. Thermal resistance junction-to-lead is 250 °C/W at 3/8" lead length, enabling reliable power dissipation up to 500 mW at 25°C ambient before linear derating begins at 50°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.6 V ±5% at 250 mA - defines precise regulation point for low-voltage reference circuits |
| Power Dissipation | 500 mW at 25°C - sets maximum continuous DC power handling before thermal derating |
| Dynamic Impedance ZZT | 1700 Ω at 250 mA - indicates voltage regulation stiffness under load variation |
| Reverse Leakage IR | 2.0 µA at 3.6 V - ensures minimal parasitic current in standby or sensing paths |
| Temp Coefficient αVZ | -0.065 %/°C - enables predictable drift compensation in wide-temperature designs |
| Noise Density ND | 1 µV/√Hz - critical for low-noise analog references and precision instrumentation |
| Junction Temp Range | -65°C to +175°C - supports operation in extreme environmental conditions per MIL spec |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; banded end is positive during Zener regulation. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded end supplies stable 3.6 V reference when reverse biased; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures mechanical integrity and long-term parameter stability under thermal cycling and vibration |
| MIL-PRF-19500/435 JAN qualification | Validates reliability for defense and space applications requiring traceable lot control and screening |
| Low noise density (1 µV/√Hz) | Supports high-resolution ADC references and low-drift analog signal chains without added filtering |
| Hermetically sealed glass package | Prevents moisture ingress and parameter shift over time in humid or corrosive environments |
| Non-ESD-sensitive design | Eliminates need for special ESD handling protocols per MIL-STD-750 method 1020 |
Applications
| Avionics Power Monitoring | Satellite Onboard Computer Reference |
|---|---|
Use Scenario: Monitoring 3.3 V rail health in flight control electronics using comparator-based undervoltage detection. IC Role / Device Role / Timing Role: Provides stable 3.6 V Zener reference for comparator threshold setting. Use Value: Enables accurate trip point within ±5% tolerance across -55°C to +125°C operational range. | Use Scenario: Supplying reference voltage to radiation-hardened ADCs sampling sensor data in LEO orbit. IC Role / Device Role / Timing Role: Serves as primary voltage reference for 12-bit SAR ADC front-end. Use Value: Delivers <1 µV/√Hz noise and inherent radiation hardness per MicroNote 050. |
| Tactical Radio RF Bias Control | Nuclear Plant Control System Sensor Interface |
Use Scenario: Setting bias points for GaAs FET amplifiers in handheld HF transceivers exposed to rapid thermal transients. IC Role / Device Role / Timing Role: Regulates gate bias voltage under varying supply and temperature conditions. Use Value: Maintains regulation stability with -0.065 %/°C tempco and 1700 Ω dynamic impedance. | Use Scenario: Conditioning thermocouple signals in safety-critical reactor coolant monitoring systems. IC Role / Device Role / Timing Role: Supplies isolated reference for instrumentation amplifier input stage. Use Value: Operates reliably from -65°C to +175°C with JANS-level screening and hermetic seal. |
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-mil-qualified); no JAN screening or temperature range guarantee | Lacks MIL-PRF-19500/435 qualification; unsuitable for defense/aerospace deployments requiring traceability and extended temperature validation | Select only for cost-sensitive industrial prototypes where full mil-spec compliance is not mandated |
| JANTXV1N4621-1 | Identical electrical specs and package; differs only in qualification level - JANTXV includes enhanced screening (burn-in, life test) beyond JAN | Required for programs demanding higher reliability assurance than JAN but not full JANS radiation hardness | Choose when system-level reliability requirements exceed JAN but do not require full space-grade JANS screening |
Compared with JAN1N4621-1, 1N4621US offers identical regulation performance at lower cost but lacks military qualification and guaranteed -65°C to +175°C operation, while JANTXV1N4621-1 provides superior screening rigor for mission-critical avionics without changing circuit design or layout.
Availability
JAN1N4621-1 is available at Aetrix Electronics and suitable for avionics power monitoring, satellite onboard computer reference, and nuclear plant control system sensor interface requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JAN1N4621-1 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.
JAN1N4621-1 belongs to Microsemi's legacy 1N46xx-1 series of metallurgically bonded Zener diodes, engineered specifically for precision voltage regulation in harsh-environment military and space applications.
FAQ
What is the Zener voltage tolerance of JAN1N4621-1?
JAN1N4621-1 has a nominal Zener voltage of 3.6 V with a standard tolerance of ±5%, as defined in the JEDEC specification and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies at 250 mA test current and 25°C ambient temperature with the device in thermal equilibrium.
Does JAN1N4621-1 meet MIL-PRF-19500/435 requirements?
Yes, JAN1N4621-1 is qualified per MIL-PRF-19500/435 at the JAN reliability level, as explicitly stated in the DESCRIPTION section on page 1 of the datasheet. This includes screening for high-reliability applications and compliance with military environmental and electrical test standards.
What is the maximum junction temperature for JAN1N4621-1?
The maximum junction and storage temperature for JAN1N4621-1 is +175°C, with a minimum of -65°C, as specified in the MAXIMUM RATINGS table on page 1. Derating begins linearly at 50°C lead temperature, reaching zero power at 175°C.
How does the temperature coefficient of JAN1N4621-1 affect its performance?
JAN1N4621-1 has a temperature coefficient of -0.065 %/°C, meaning its Zener voltage decreases by approximately 2.34 mV per °C rise in junction temperature. This predictable negative drift allows designers to compensate in precision reference circuits across wide operating temperatures.
Is JAN1N4621-1 RoHS compliant?
No - JAN1N4621-1 is not RoHS compliant. Per the datasheet, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants, not for JAN-level parts. The JAN1N4621-1 uses traditional tin-lead plating per MIL-STD-750.
JAN1N4621-1 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:
- ±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)
JAN1N4621-1 FAQ
1.How can I place an order for JAN1N4621-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4621-1 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 JAN1N4621-1 reliable?
The price and inventory of JAN1N4621-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4621-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4621-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4621-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4621-1?
JAN1N4621-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4621-1 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 JAN1N4621-1?
For technical support, including JAN1N4621-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4621-1 requirements.
6.How does Aetrix verify that JAN1N4621-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4621-1 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 JAN1N4621-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4621-1?
All JAN1N4621-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4621-1, 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 JAN1N4621-1 part is unused and in its original packaging.
Return procedure for JAN1N4621-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4621-1 Tags
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