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Microchip Technology JAN1N4126C-1
- Part No.:
- JAN1N4126C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4126C-1.pdf
- Description:
- DIODE ZENER 51V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,786
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Product details
Overview
JAN1N4126C-1 from Microsemi is a 51 V, 2% tolerance, 500 mW 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 JAN1N4126C-1 datasheet, JAN1N4126C-1 pinout, JAN1N4126C-1 application, or JAN1N4126C-1 equivalent, key selection factors include its 51 V nominal Zener voltage at 250 mA test current, ±2% voltage tolerance, 300 Ω dynamic impedance, 40 µV/√Hz noise density, and JANS-qualified thermal stability up to +175 °C junction temperature.
Technical Context
This device operates as a precision shunt voltage regulator with a defined breakdown knee at IZK = 250 mA and exhibits low-noise performance critical for analog references. Its metallurgical bond construction ensures stable Zener voltage under thermal cycling and radiation exposure.
The diode's polarity is marked by a cathode band and requires reverse-bias operation (cathode positive) for regulation. Temperature coefficient is +0.100 %/°C, enabling predictable drift compensation in wide-temperature-range designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 51 V at 250 mA test current - sets precise regulation point for feedback loops and reference rails. |
| Zener Voltage Tolerance | ±2% - tighter than standard 5% parts, reducing calibration overhead in precision instrumentation. |
| Power Dissipation | 500 mW at 25 °C - supports stable regulation in compact axial-leaded layouts with derating to zero at 175 °C. |
| Dynamic Impedance | 300 Ω at 250 mA - determines output impedance and load regulation sensitivity in shunt configurations. |
| Noise Density | 40 µV/√Hz - enables use in low-noise analog references where broadband noise impacts ADC accuracy. |
| Temperature Coefficient | +0.100 %/°C - allows predictable voltage drift modeling across -65 to +175 °C operating range. |
| Reverse Leakage Current | ≤1 µA at 38.8 V - ensures minimal quiescent current draw in standby or battery-backed circuits. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead plating; cathode indicated by single band; weight ≈ 0.2 g; lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal | Connected to system ground or low-side return path; must be held at lower potential than cathode during regulation. |
| Cathode | Zener regulation node | Banded end; connected to regulated voltage rail; sinks current to maintain 51 V across load. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures mechanical integrity and long-term parameter stability under shock, vibration, and thermal stress in flight-critical systems. |
| MIL-PRF-19500/435 JAN qualification | Validated reliability for military/aerospace applications including burn-in, life testing, and lot acceptance per screening requirements. |
| Low noise density (40 µV/√Hz) | Supports high-resolution data acquisition where Zener noise directly contributes to system ENOB degradation. |
| Hermetic glass sealing | Prevents moisture ingress and parameter shift over decades of operation in humid or corrosive environments. |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for space-grade analog references. |
Applications
| Aerospace Power Reference | Defense System Overvoltage Clamp |
|---|---|
Use Scenario: Precision 51 V reference for ADC/DAC biasing and sensor excitation in satellite telemetry modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 51 V rail independent of input variation or load transients. Use Value: ±2% tolerance and +0.100 %/°C TC enable <10 ppm/°C drift over -55 to +125 °C, meeting MIL-STD-810G thermal cycling requirements. | Use Scenario: Overvoltage protection on 48 V DC distribution bus in tactical vehicle electronics. IC Role / Device Role / Timing Role: Fast-acting crowbar element clamping transient spikes above 51 V to protect downstream FPGAs and memory. Use Value: 500 mW power rating and 300 Ω dynamic impedance allow sustained clamp current up to 165 mA without thermal runaway. |
| Avionics Sensor Excitation | Secure Communication Module Bias |
Use Scenario: Stable excitation source for strain-gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Low-noise voltage source delivering clean 51 V to bridge arms with minimal added RMS noise. Use Value: 40 µV/√Hz noise density limits added noise to <1.2 µV RMS in 1 kHz bandwidth - preserving 16-bit measurement resolution. | Use Scenario: Bias supply for RF front-end LNAs and mixers in encrypted radio transceivers. IC Role / Device Role / Timing Role: Regulated local supply decoupling sensitive analog stages from noisy digital domains. Use Value: Hermetic DO-35 package prevents humidity-induced leakage drift, ensuring consistent LNA gain stability over 20-year field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4126US-1 | Same 51 V, 2% spec but in DO-213AA surface-mount package; no axial leads. | Used where PCB real estate is constrained and reflow assembly is required instead of through-hole mounting. | Select when automated SMT production is mandatory and thermal pad layout supports RθJL ≤ 250 °C/W. |
| JANTXV1N4126C | Identical electrical specs but qualified to JANTXV level with enhanced screening (e.g., 100% burn-in, extended life test). | Required for mission-critical subsystems where failure probability must be <1 FIT per billion hours. | Select when system-level reliability mandates JANTXV screening beyond JAN baseline. |
Compared with JAN1N4126C-1, 1N4126US-1 enables miniaturized layouts but sacrifices axial-lead serviceability and manual prototyping ease, while JANTXV1N4126C adds cost and lead time for verified ultra-high reliability in launch-critical avionics.
Availability
JAN1N4126C-1 is available at Aetrix Electronics and suitable for aerospace power references, defense system overvoltage clamps, and avionics sensor excitation requiring stable component supply across extended product lifecycles.
Supply support for JAN1N4126C-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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
JAN1N4126C-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in harsh-environment electronics where long-term parametric stability and screening compliance are non-negotiable.
FAQ
What is the Zener voltage tolerance of JAN1N4126C-1?
JAN1N4126C-1 has a ±2% Zener voltage tolerance at 250 mA test current, meaning its actual regulation voltage falls between 49.98 V and 52.02 V under specified conditions. This tighter tolerance reduces calibration burden in precision analog circuits compared to standard 5% parts like JAN1N4126-1. The "C" suffix in JAN1N4126C-1 explicitly denotes the 2% grade.
Is JAN1N4126C-1 suitable for surface-mount assembly?
No, JAN1N4126C-1 uses the axial-leaded DO-35 (DO-204AH) glass package and is intended for through-hole mounting. For surface-mount equivalents, consider 1N4126US-1 in DO-213AA or 1PMT4126 in DO-216 - both share identical 51 V/2% specs but differ in leadform and thermal resistance. JAN1N4126C-1 itself requires wave or hand soldering with 3/8″ lead length for optimal thermal dissipation.
What is the maximum operating temperature for JAN1N4126C-1?
JAN1N4126C-1 has a junction and storage temperature range of -65 °C to +175 °C, fully compliant with MIL-PRF-19500/435. Its power dissipation linearly derates from 500 mW at 25 °C to zero at 175 °C, allowing reliable operation in engine bay or avionics bay environments where ambient temperatures exceed 100 °C - provided PCB copper area and lead length meet thermal resistance requirements (RθJA = 300 °C/W, RθJL = 250 °C/W).
Does JAN1N4126C-1 require external heat sinking?
JAN1N4126C-1 does not require external heat sinking when operated within its 500 mW power limit and with ≥3/8″ (10 mm) lead length from body, as specified in the datasheet. Its RθJL of 250 °C/W enables adequate self-cooling in typical FR4 boards with 4 mm² copper pads. However, sustained operation near IZM = 38.8 mA at full 51 V demands verification of board-level thermal design using the derating curve in Figure 2 of T4-LDS-0245-2.
How does the noise performance of JAN1N4126C-1 compare to lower-voltage Zeners?
JAN1N4126C-1 exhibits 40 µV/√Hz noise density at 250 mA, consistent with Microsemi's specification that noise falls rapidly below 6.8 V and stabilizes at this level for voltages ≥6.8 V. Unlike sub-5 V Zeners (e.g., 1N4120C-1 at 30 V, ND = 13 µV/√Hz), JAN1N4126C-1's higher voltage yields greater absolute noise but remains suitable for reference applications where 51 V provides optimal signal-to-noise ratio against system offsets. Its noise is measured in 1–3 kHz band per Figure 1.
JAN1N4126C-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):
- 51 V
- Tolerance:
- ±2%
- 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)
JAN1N4126C-1 FAQ
1.How can I place an order for JAN1N4126C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4126C-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 JAN1N4126C-1 reliable?
The price and inventory of JAN1N4126C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4126C-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4126C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4126C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4126C-1?
JAN1N4126C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4126C-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 JAN1N4126C-1?
For technical support, including JAN1N4126C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4126C-1 requirements.
6.How does Aetrix verify that JAN1N4126C-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4126C-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 JAN1N4126C-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4126C-1?
All JAN1N4126C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4126C-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 JAN1N4126C-1 part is unused and in its original packaging.
Return procedure for JAN1N4126C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4126C-1 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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