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Microchip Technology JAN1N4126-1
- Part No.:
- JAN1N4126-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4126-1.pdf
- Description:
- DIODE ZENER 51V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,802
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Product details
Overview
JAN1N4126-1 from Microsemi is a 500 mW, 51.0 V metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JAN level per MIL-PRF-19500/435, with ±5% voltage tolerance, 300 °C/W thermal resistance junction-to-ambient, and 40 µV/√Hz max noise density at 25 °C - used for precision voltage regulation in military-grade power supply references and analog signal conditioning.
For engineers reviewing the JAN1N4126-1 datasheet, JAN1N4126-1 pinout, JAN1N4126-1 application, or JAN1N4126-1 equivalent, key selection criteria include Zener voltage accuracy at IZT = 250 mA, dynamic impedance ZZT = 300 Ω, maximum reverse current IR = 0.01 µA at VR = 38.8 V, temperature coefficient αVZ = +0.100 %/°C, and hermetic DO-35 packaging for high-reliability environments.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with regulation established at 51.0 V nominal Zener voltage under 250 mA test current. Its metallurgical bond construction ensures stable long-term voltage drift and low noise performance critical for metrology-grade circuits.
The JAN1N4126-1 exhibits a positive temperature coefficient of +0.100 %/°C above 50 V, enabling predictable thermal compensation in series-connected reference strings. It maintains ≤0.01 µA reverse leakage at 38.8 V and supports full-rated power dissipation up to +50 °C before linear derating to zero at +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51.0 V at IZT = 250 mA - defines precise regulation point for reference design |
| Power Dissipation PM(AV) | 0.5 W at TC = +25 °C - sets maximum continuous thermal load on PCB layout |
| Zener Impedance ZZT | 300 Ω at IZT - determines output voltage stability under load transients |
| Reverse Leakage IR | ≤0.01 µA at VR = 38.8 V - ensures minimal error current in high-impedance bias networks |
| Noise Density ND | ≤40 µV/√Hz at IZT - critical for low-noise analog front-ends and precision ADC references |
| Temp Coefficient αVZ | +0.100 %/°C - enables predictable thermal drift modeling in wide-temperature systems |
| Thermal Resistance RθJA | 300 °C/W - informs heatsinking requirements when operating near rated power |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by band; operated with banded end positive relative to unbanded end for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or lowest potential point in regulation loop |
| Cathode (banded end) | Regulated output node | Delivers stable 51.0 V reference voltage to load or feedback network |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for aerospace and defense applications requiring traceable lot control and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter shift over 20+ year field life in harsh environments |
| Low noise density (≤40 µV/√Hz) | Enables use in high-resolution data acquisition without external filtering |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Allows handling without special ESD controls during manual assembly or rework |
Applications
| Avionics Power Reference | Test Equipment Calibration |
|---|---|
Use Scenario: Providing primary voltage reference for analog-to-digital converters in flight control computers. IC Role / Device Role / Timing Role: Two-terminal Zener regulator establishing stable 51.0 V rail for precision DACs and op-amp biasing. Use Value: JAN-level qualification ensures operation across -65 °C to +175 °C with <±0.5% long-term drift, meeting DO-160 environmental compliance. | Use Scenario: Serving as traceable reference standard in automated calibration systems for multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Primary voltage standard in closed-loop calibration feedback path. Use Value: 300 Ω dynamic impedance and ≤40 µV/√Hz noise enable sub-10 ppm measurement uncertainty at 51.0 V output. |
| Rad-Hard Analog Front-End | Military Radio Bias Supply |
Use Scenario: Generating regulated bias for radiation-tolerant amplifiers in satellite telemetry receivers. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference supplying gate bias to RF LNA stages. Use Value: Inherent radiation hardness per MicroNote 050 allows >100 krad(Si) TID tolerance without parameter degradation. | Use Scenario: Stabilizing local oscillator supply in HF/VHF tactical radios operating in mobile vehicular environments. IC Role / Device Role / Timing Role: Low-noise voltage clamp protecting sensitive PLL circuitry from supply ripple. Use Value: ≤0.01 µA reverse leakage at 38.8 V prevents loading of high-Z tuning varactors, preserving frequency stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4126US | Same 51.0 V Zener voltage, but in surface-mount DO-213AA package; no MIL qualification | Used in commercial-grade SMT designs where board space is constrained and military screening not required | Select when RoHS-compliant SMT assembly is needed and JAN-level reliability is unnecessary |
| JANTXV1N4126 | Identical electrical specs and DO-35 package, but qualified to JANTXV level per MIL-PRF-19500/435 with extended screening | Required for programs demanding enhanced burn-in, temperature cycling, and parametric lot acceptance testing | Select when higher reliability screening beyond JAN level is mandated by system specification |
Compared with JAN1N4126-1, 1N4126US offers footprint reduction but sacrifices hermeticity and radiation tolerance, while JANTXV1N4126 provides identical performance with tighter process controls and broader environmental validation - making it suitable for mission-critical avionics where failure modes must be statistically bounded.
Availability
JAN1N4126-1 is available at Aetrix Electronics and suitable for avionics power reference, test equipment calibration, and rad-hard analog front-end applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JAN1N4126-1 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, radiation-hardened, and aerospace-grade components.
The JAN1N4126-1 belongs to Microsemi's legacy 1N4099–1N4135 family of MIL-qualified Zener diodes, designed specifically for precision voltage regulation in defense, space, and industrial systems where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance for JAN1N4126-1?
JAN1N4126-1 has a nominal Zener voltage of 51.0 V with a standard tolerance of ±5%, as defined by JEDEC registration and verified per MIL-PRF-19500/435 test requirements. This tolerance applies at IZT = 250 mA and TC = +25 °C, and remains stable across its qualified operating temperature range of –65 °C to +175 °C.
Is JAN1N4126-1 RoHS compliant?
No, JAN1N4126-1 is not RoHS compliant. The "e3" RoHS designation is only available on commercial-grade versions (e.g., 1N4126-1e3); JAN-level parts retain traditional tin-lead plating per MIL-STD-750 Method 2026 to ensure solderability and reliability under extreme thermal stress, and are exempt from RoHS under EU Directive 2011/65/EU Annex III.
What is the maximum reverse leakage current for JAN1N4126-1?
JAN1N4126-1 specifies a maximum reverse leakage current (IR) of 0.01 µA at VR = 38.8 V and TA = +25 °C. This ultra-low leakage ensures minimal error contribution in high-impedance reference divider networks and supports accurate biasing of sensitive analog circuitry without measurable loading effects.
Can JAN1N4126-1 be used in surface-mount designs?
No, JAN1N4126-1 uses a DO-35 axial-leaded glass package and is not compatible with surface-mount assembly. For SMT equivalents, consider the 1N4126US in DO-213AA package - though it lacks MIL qualification and hermetic sealing, and is intended for commercial applications only.
What is the thermal derating behavior of JAN1N4126-1?
JAN1N4126-1 linearly derates from 500 mW starting at TL = +50 °C, reaching zero power dissipation at +175 °C. On a typical FR4 PCB with 4 mm² copper pads, ambient derating begins at +25 °C, following the same linear slope - requiring thermal design margins below 500 mW when operating above +50 °C lead temperature.
JAN1N4126-1 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):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- -
- Impedance (Max) (Zzt):
- 300 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 38.8 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)
JAN1N4126-1 FAQ
1.How can I place an order for JAN1N4126-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4126-1 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 JAN1N4126-1 reliable?
The price and inventory of JAN1N4126-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4126-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4126-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4126-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4126-1?
JAN1N4126-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4126-1 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 JAN1N4126-1?
For technical support, including JAN1N4126-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4126-1 requirements.
6.How does Aetrix verify that JAN1N4126-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4126-1 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 JAN1N4126-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4126-1?
All JAN1N4126-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4126-1, 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 JAN1N4126-1 part is unused and in its original packaging.
Return procedure for JAN1N4126-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4126-1 Tags
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