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Microchip Technology JAN1N4626-1
- Part No.:
- JAN1N4626-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4626-1.pdf
- Description:
- DIODE ZENER 5.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,946
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Product details
Overview
JAN1N4626-1 from Microsemi is a 500 mW, 5.6 V metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435. It delivers ±5% Zener voltage tolerance, 1400 Ω dynamic impedance at 250 mA test current, and operates across –65 °C to +175 °C for high-reliability voltage regulation in aerospace power conditioning.
For engineers reviewing the JAN1N4626-1 datasheet, JAN1N4626-1 pinout, JAN1N4626-1 application, or JAN1N4626-1 equivalent, key selection factors include its JANS qualification, low noise density (4 μV/√Hz), 5.6 V nominal Zener voltage with ±5% tolerance, and thermal resistance of 250 °C/W junction-to-lead - critical for stable biasing in radiation-hardened analog references.
Technical Context
The JAN1N4626-1 functions as a precision shunt voltage regulator with a nominal Zener voltage of 5.6 V at 250 mA test current (IZT). Its metallurgical bond construction ensures mechanical robustness and long-term stability under thermal cycling and vibration stress.
It exhibits a temperature coefficient of –0.020 %/°C to +0.040 %/°C, enabling predictable drift compensation in wide-temperature-range circuits. Maximum reverse leakage is 5.0 μA at 4.0 V (VR), and dynamic impedance (ZZT) is 1400 Ω - optimized for low-noise reference generation rather than high-current regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V at 250 mA - defines stable regulation point for analog reference and overvoltage clamp circuits. |
| Power Dissipation | 500 mW at 25 °C - supports continuous operation in compact, unheatsinked designs with linear derating above 50 °C. |
| Zener Impedance (ZZT) | 1400 Ω at 250 mA - indicates moderate AC impedance; suitable for low-frequency biasing, not fast transient suppression. |
| Noise Density (ND) | 4 μV/√Hz at IZT - enables low-noise voltage references in precision instrumentation and sensor signal chains. |
| Temp Coefficient (αVZ) | –0.020 to +0.040 %/°C - allows predictable voltage drift modeling across –65 °C to +175 °C operating range. |
| Reverse Leakage (IR) | 5.0 μA at 4.0 V - ensures minimal quiescent current draw in standby or low-power monitoring circuits. |
| Package | DO-35 (DO-204AH) - axial-leaded, hermetically sealed glass package rated for high-reliability military/aerospace use. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Hermetically sealed, tin-lead or RoHS-compliant matte-tin plating, ~0.2 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference Ground Node | Connected to circuit ground or common return; establishes reference potential for Zener breakdown. |
| Cathode | Regulated Output Node | Banded terminal; supplies stable 5.6 V when reverse-biased; must be held at higher potential than anode. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical Bond Construction | Eliminates interfacial delamination risk under thermal shock and mechanical stress - essential for space-grade reliability. |
| JANS Qualification | Fully qualified per MIL-PRF-19500/435 - meets highest military screening for radiation hardness, burn-in, and life testing. |
| Low Noise Density | 4 μV/√Hz at 5.6 V enables sub-mV RMS noise in precision analog references without external filtering. |
| Hermetic Glass Encapsulation | Prevents moisture ingress and parameter drift over decades - validated for >20-year shelf life in controlled storage. |
| ESD Immunity | Non-sensitive per MIL-STD-750 Method 1020 - eliminates need for handling precautions during board assembly. |
Applications
| Aerospace Power Reference | Radiation-Hardened Sensor Bias |
|---|---|
Use Scenario: Providing stable 5.6 V reference for ADCs and DACs in satellite telemetry modules operating in LEO orbit. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precision analog ground for mixed-signal converters. Use Value: JANS qualification and inherent radiation hardness ensure no parametric shift after 100 krad(Si) total ionizing dose exposure. | Use Scenario: Biasing photodiode amplifiers in nuclear reactor monitoring systems exposed to neutron flux. IC Role / Device Role / Timing Role: Low-noise Zener source supplying regulated voltage to op-amp input stages. Use Value: 4 μV/√Hz noise density prevents signal degradation in femtoamp-level photocurrent measurements. |
| Military Avionics Voltage Clamp | High-Temp Industrial Control Reference |
Use Scenario: Overvoltage protection on 28 V DC distribution buses in fighter jet flight control computers. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping bus spikes to safe levels during load dump events. Use Value: 500 mW power rating and –65 °C to +175 °C operating range sustain reliable clamping across extreme environmental profiles. | Use Scenario: Reference generator for thermocouple signal conditioners in oil refinery combustion controllers. IC Role / Device Role / Timing Role: Primary voltage reference for cold-junction compensation circuits. Use Value: Predictable αVZ (–0.020 to +0.040 %/°C) enables accurate temperature-compensated calibration up to 150 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4626US | Same 5.6 V Zener voltage and DO-35 package, but commercial-grade (non-mil-qualified); RoHS compliant (e3). | Lacks JANS screening and radiation hardness validation; unsuitable for space or nuclear environments. | Select only for cost-sensitive industrial prototypes where full MIL-PRF-19500 compliance is not required. |
| JANTXV1N4626 | Identical electrical specs and DO-35 package; qualified to JANTXV level (lower screening rigor than JANS but higher than JAN). | Validated for high-reliability avionics but not certified for space radiation environments per MIL-STD-883. | Choose when JANS-level radiation assurance is unnecessary but extended temperature and burn-in screening are mandatory. |
Compared with JAN1N4626-1, 1N4626US offers lower cost and RoHS compliance but no military qualification, while JANTXV1N4626 provides intermediate reliability assurance - making JAN1N4626-1 the sole choice for mission-critical spaceflight and nuclear instrumentation where full JANS screening is mandated.
Availability
JAN1N4626-1 is available at Aetrix Electronics and suitable for aerospace power reference, radiation-hardened sensor bias, and military avionics voltage clamp applications requiring stable component supply across extended product lifecycles.
Supply support for JAN1N4626-1 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 defense, aerospace, and industrial markets.
The JAN1N4626-1 belongs to Microsemi's legacy 1N46xx-1 series of metallurgically bonded Zener diodes, engineered specifically for mil-spec voltage regulation where long-term stability, radiation tolerance, and hermetic integrity are non-negotiable.
FAQ
What is the Zener voltage tolerance of JAN1N4626-1?
JAN1N4626-1 has a nominal Zener voltage of 5.6 V with a standard tolerance of ±5%, as defined in the JEDEC-registered specification and confirmed in Microsemi's T4-LDS-0245-2 datasheet. This tolerance applies under thermal equilibrium conditions at 25 °C with 250 mA test current (IZT).
Is JAN1N4626-1 suitable for surface-mount PCB designs?
No - JAN1N4626-1 uses the axial-leaded DO-35 (DO-204AH) glass package and is not a surface-mount device. For SMT equivalents, Microsemi offers the 1N4626UR-1 in DO-213AA and 1PMT4626 in DO-216 packages, which share identical electrical specs but differ in mounting form factor and qualification level.
What is the maximum reverse leakage current for JAN1N4626-1?
The maximum reverse leakage current (IR) for JAN1N4626-1 is 5.0 μA at a reverse voltage (VR) of 4.0 V, per the Electrical Characteristics table in the official Microsemi datasheet T4-LDS-0245-2. This value is specified at 25 °C and reflects worst-case leakage under sub-breakdown bias conditions.
Does JAN1N4626-1 require heatsinking in typical operation?
JAN1N4626-1 does not require external heatsinking at ≤500 mW dissipation and lead temperature ≤50 °C. Its thermal resistance junction-to-lead is 250 °C/W, so at 250 mA and 5.6 V (1.4 W theoretical), it must be operated below 250 mA to stay within 500 mW - typically limiting practical current to ~89 mA for continuous operation at 25 °C ambient.
How is polarity marked on JAN1N4626-1?
JAN1N4626-1 uses a cathode band marking on the glass body - the banded end is the cathode and must be held at a higher potential than the anode to achieve Zener breakdown regulation. Polarity is verified per MIL-STD-750 Method 2026 and documented in the Mechanical and Packaging section of the T4-LDS-0245-2 datasheet.
JAN1N4626-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1400 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 4 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)
JAN1N4626-1 FAQ
1.How can I place an order for JAN1N4626-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4626-1 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 JAN1N4626-1 reliable?
The price and inventory of JAN1N4626-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4626-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4626-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4626-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4626-1?
JAN1N4626-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4626-1 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 JAN1N4626-1?
For technical support, including JAN1N4626-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4626-1 requirements.
6.How does Aetrix verify that JAN1N4626-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4626-1 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 JAN1N4626-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4626-1?
All JAN1N4626-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4626-1, 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 JAN1N4626-1 part is unused and in its original packaging.
Return procedure for JAN1N4626-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4626-1 Tags
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