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Microchip Technology JANS1N4126C-1/TR
- Part No.:
- JANS1N4126C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4126C-1/TR.pdf
- Description:
- DIODE ZENER 51V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,866
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Product details
Overview
JANS1N4126C-1/TR from Microsemi is a 51 V, ±2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers stable voltage regulation with 300 Ω dynamic impedance at 250 mA test current, 7.5 mA maximum Zener current, and low noise density of 1 µV/√Hz.
For engineers reviewing the JANS1N4126C-1/TR datasheet, JANS1N4126C-1/TR pinout, JANS1N4126C-1/TR application, or JANS1N4126C-1/TR equivalent, key selection criteria include its JANS-level radiation hardness, 51 V nominal Zener voltage with 2% tolerance, DO-35 axial-leaded hermetic package, and verified performance across –65 °C to +175 °C junction temperature range.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures mechanical stability under thermal cycling and shock, critical for space-grade operation.
The JANS1N4126C-1/TR exhibits a positive temperature coefficient of +0.100 %/°C above 50 V, enabling predictable drift compensation in reference circuits. Its 1 µV/√Hz noise density at 51 V supports low-noise analog references where spectral purity is essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51 V ±2% at 250 mA - defines precise regulation point for reference design |
| Power Dissipation | 500 mW @ 25 °C - sets maximum continuous power handling before derating |
| Dynamic Impedance ZZT | 300 Ω @ 250 mA - determines output voltage variation under load current changes |
| Max Reverse Current IR | 10 µA @ 38.8 V - specifies leakage threshold below regulation knee |
| Noise Density ND | 1 µV/√Hz @ 250 mA - enables use in ultra-low-noise voltage references |
| Temp Coefficient αVZ | +0.100 %/°C - quantifies voltage drift over operating temperature range |
| Junction Temp Range | –65 °C to +175 °C - supports operation in extreme environmental conditions |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead plating; cathode indicated by colored band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail in shunt regulation |
| Cathode | Regulated output node | Banded end supplies stable 51 V output when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for spaceflight and nuclear-hardened systems per DoD requirements |
| Metallurgical bond construction | Eliminates die attach voids and delamination risks under thermal stress |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid environments |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 |
| Low capacitance | Typical <1.5 pF - minimizes high-frequency loading in RF bias networks |
Applications
| Spacecraft Power Regulation | Aerospace Reference Circuits |
|---|---|
Use Scenario: Regulating auxiliary bus voltage in satellite power distribution units exposed to wide thermal swings and radiation. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 51 V setpoint for DC-DC converter feedback loops. Use Value: JANS qualification and –65 °C to +175 °C operation ensure reliability across orbital thermal cycles without recalibration. | Use Scenario: Generating precision bias voltages for op-amp input stages in flight control sensor signal conditioning. IC Role / Device Role / Timing Role: Low-noise Zener reference source replacing higher-drift alternatives in analog front-ends. Use Value: 1 µV/√Hz noise density and +0.100 %/°C tempco enable sub-mV stability over mission lifetime. |
| Nuclear Instrumentation | High-Reliability Test Equipment |
Use Scenario: Providing calibrated reference in radiation monitoring instruments deployed in reactor containment zones. IC Role / Device Role / Timing Role: Radiation-hardened voltage clamp protecting ADC inputs from transient overvoltage events. Use Value: Inherent TID tolerance eliminates need for shielding or redundant reference paths in high-dose environments. | Use Scenario: Serving as traceable calibration standard in benchtop multimeters and automated test systems requiring NIST-traceable stability. IC Role / Device Role / Timing Role: Primary shunt reference in metrology-grade voltage divider networks. Use Value: ±2% initial tolerance and hermetic packaging ensure calibration integrity over 10+ years of field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4126C-1 | Same electrical specs but qualified only to JANTXV level; lower radiation tolerance and screening depth than JANS | Suitable for airborne avionics where full JANS qualification is not mandated | Select when cost and lead time are prioritized over space-grade radiation assurance |
| 1N4126C-1/TR | Commercial-grade version; no MIL-PRF-19500 qualification; RoHS-compliant plating | Applicable in industrial test gear or non-safety-critical instrumentation | Choose for terrestrial applications requiring same Zener voltage but without military screening |
Compared with JANS1N4126C-1/TR, JANTXV1N4126C-1 offers reduced screening rigor and radiation assurance, while 1N4126C-1/TR sacrifices all military qualification for commercial cost and RoHS compliance-making JANS1N4126C-1/TR the sole choice for mission-critical space systems demanding full JANS compliance.
Availability
JANS1N4126C-1/TR is available at Aetrix Electronics and suitable for spacecraft power regulation, aerospace reference circuits, and nuclear instrumentation requiring stable component supply with guaranteed long-term obsolescence management.
Supply support for JANS1N4126C-1/TR 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The JANS1N4126C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for radiation-tolerant voltage reference and regulation in mission-critical systems where failure is not an option.
FAQ
What is the Zener voltage tolerance for JANS1N4126C-1/TR?
JANS1N4126C-1/TR has a nominal Zener voltage of 51 V with a ±2% tolerance, as indicated by the "C" suffix in the part number per Microsemi's nomenclature. This tolerance is verified at 250 mA test current and 25 °C ambient, and remains stable across the full –65 °C to +175 °C junction temperature range due to its metallurgical bond construction and JANS-level screening.
Is JANS1N4126C-1/TR compatible with lead-free soldering processes?
JANS1N4126C-1/TR uses traditional tin-lead plating per MIL-STD-750 method 2026 and is rated for 10 s at 260 °C solder temperature. While it can withstand lead-free reflow profiles, it is not RoHS compliant due to its JANS qualification and lead content; Microsemi does not offer a RoHS-compliant JANS variant of JANS1N4126C-1/TR.
What is the maximum Zener current rating for JANS1N4126C-1/TR?
The maximum Zener current IZM for JANS1N4126C-1/TR is 75 mA, derived from its 500 mW power rating and 51 V Zener voltage (P = V × I). This value assumes operation at 25 °C lead temperature; current must be linearly derated above 50 °C per the published power derating curve in the datasheet.
Does JANS1N4126C-1/TR have documented radiation hardness data?
Yes, JANS1N4126C-1/TR is inherently radiation hard as described in Microsemi MicroNote 050. Its metallurgically bonded die and hermetic DO-35 package provide proven tolerance to total ionizing dose (TID), making it suitable for low-earth orbit and nuclear environments without additional shielding or derating.
How is polarity marked on JANS1N4126C-1/TR?
JANS1N4126C-1/TR uses a cathode band marking on the glass body to indicate polarity: the banded end is the cathode and must be held at a higher potential than the anode for proper Zener regulation. This marking complies with JEDEC standards and is visible under standard visual inspection during board assembly.
JANS1N4126C-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 51 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- 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 (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4126C-1/TR FAQ
1.How can I place an order for JANS1N4126C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4126C-1/TR 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 JANS1N4126C-1/TR reliable?
The price and inventory of JANS1N4126C-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4126C-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4126C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4126C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4126C-1/TR?
JANS1N4126C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4126C-1/TR 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 JANS1N4126C-1/TR?
For technical support, including JANS1N4126C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4126C-1/TR requirements.
6.How does Aetrix verify that JANS1N4126C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4126C-1/TR 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 JANS1N4126C-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4126C-1/TR?
All JANS1N4126C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4126C-1/TR, 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 JANS1N4126C-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4126C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4126C-1/TR Tags
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