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Microchip Technology JAN1N4126D-1/TR
- Part No.:
- JAN1N4126D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4126D-1/TR.pdf
- Description:
- DIODE ZENER 51V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,009
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Product details
Overview
JAN1N4126D-1/TR from Microsemi is a 51 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4126D-1/TR datasheet, JAN1N4126D-1/TR pinout, JAN1N4126D-1/TR application, or JAN1N4126D-1/TR equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification details critical for precision reference and radiation-hardened designs.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 51.0 V at 250 mA test current, exhibiting a temperature coefficient of +0.100 %/°C and dynamic impedance of 300 Ω at IZT. Its metallurgical bond construction ensures stable regulation across wide current and temperature ranges.
Designed for high-reliability environments, it features hermetic glass sealing, non-ESD-sensitive operation per MIL-STD-750 Method 1020, and inherent radiation hardness documented in Microsemi MicroNote 050 - all validated under JANS-level qualification per MIL-PRF-19500/435.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51.0 V ±1% at 250 mA - enables precise voltage clamping in regulated power rails requiring tight tolerance |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact, convection-cooled military PCB layouts |
| Dynamic Impedance ZZT | 300 Ω at IZT - limits output voltage variation under load transients in reference circuits |
| Noise Density ND | 1 µV/√Hz at 51 V - ensures low-noise performance in precision analog references and sensor excitation |
| Temp Coefficient αVZ | +0.100 %/°C - predictable positive drift allows compensation in temperature-stable reference designs |
| Max Reverse Current IR | 10 µA at VR = 38.8 V - guarantees minimal leakage in high-impedance bias networks |
| Junction Temp Range | –65 °C to +175 °C - enables deployment in extended-temperature avionics and space-grade electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; banded end is positive during Zener regulation. Hermetically sealed, tin-lead plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference node | Connected to system ground or lower-potential rail; defines Zener breakdown polarity |
| Cathode | Regulated output node | Banded end; provides stable 51 V reference when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated reliability for flight-critical systems with full lot traceability and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| 1% Zener voltage tolerance | Reduces need for external trimming in precision reference circuits |
| Inherent radiation hardness | Meets TID requirements for low-earth orbit without additional shielding or derating |
| Low capacitance (typ. <2 pF) | Minimizes high-frequency loading in RF bias and fast-switching regulator feedback paths |
Applications
| Avionics Power Regulation | Satellite Reference Supply |
|---|---|
Use Scenario: Regulating auxiliary 51 V bus in airborne radar transmitter modules operating from 28 V DC input. IC Role / Device Role / Timing Role: Primary Zener reference for linear post-regulator stage ensuring stable gate drive voltage. Use Value: JANS qualification and –65 °C to +175 °C operation guarantee uninterrupted function during rapid cabin pressure and temperature excursions. | Use Scenario: Providing stable bias voltage for radiation-tolerant op-amps in satellite star tracker analog front-end. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC reference divider network. Use Value: 1 µV/√Hz noise density and inherent radiation hardness eliminate need for redundant reference ICs in TID-constrained payloads. |
| Ground-Based Radar Bias | Nuclear Instrumentation |
Use Scenario: Generating fixed 51 V bias for GaN HEMT gate drivers in S-band pulse amplifiers. IC Role / Device Role / Timing Role: High-stability Zener clamp protecting driver ICs from overvoltage during switching transients. Use Value: 300 Ω dynamic impedance and 500 mW rating sustain transient energy absorption without parameter shift. | Use Scenario: Establishing calibrated reference in neutron flux monitoring systems deployed in reactor containment zones. IC Role / Device Role / Timing Role: Radiation-hardened voltage standard for analog signal conditioning circuitry. Use Value: JANS-level screening and documented radiation response per MicroNote 050 ensure long-term calibration integrity under neutron/gamma exposure. |
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-1 | Same 51 V, 1% spec but in DO-213AA surface-mount package; no axial leads | Requires PCB re-layout for SMT assembly; unsuitable for through-hole prototyping or wire-wrap | Select when automated assembly and board space constraints outweigh manual serviceability needs |
| JANTXV1N4126D-1 | Identical electrical specs and DO-35 package; differs only in JANTXV qualification level (less stringent screening than JANS) | Approved for high-reliability ground systems but not flight-qualified; lower cost and shorter lead time | Select for non-flight-critical defense programs where full JANS screening is unnecessary |
Compared with JAN1N4126D-1/TR, the 1N4126US-1 offers identical regulation performance in a space-saving SMT form factor, while JANTXV1N4126D-1 delivers matching electrical behavior with reduced qualification rigor - enabling trade-offs between cost, lead time, and mission assurance level.
Availability
JAN1N4126D-1/TR is available at Aetrix Electronics and suitable for avionics power regulation, satellite reference supply, and nuclear instrumentation requiring stable component supply with full traceability and long-lifecycle support.
Supply support for JAN1N4126D-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) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and aerospace-grade components.
The JAN1N4126D-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, engineered specifically for voltage reference stability in mission-critical defense, space, and nuclear applications.
FAQ
What is the Zener voltage tolerance for JAN1N4126D-1/TR?
The JAN1N4126D-1/TR has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its nomenclature. This is confirmed in the Electrical Characteristics table on Page 3 of Microsemi T4-LDS-0245-2, where VZ = 51.0 V at IZT = 250 mA with 1% tolerance. The tighter tolerance reduces calibration drift in precision reference circuits compared to standard 5% variants like JAN1N4126-1.
Is JAN1N4126D-1/TR RoHS compliant?
No, JAN1N4126D-1/TR is not RoHS compliant. Per the nomenclature guide on Page 2 of T4-LDS-0245-2, the "e3" suffix indicates RoHS compliance, which is absent in JAN1N4126D-1/TR. The part uses tin-lead plating per MIL-STD-750 and is intended for high-reliability military applications where leaded finishes are required for solder joint integrity.
What does the "TR" suffix mean in JAN1N4126D-1/TR?
The "TR" suffix in JAN1N4126D-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. As stated on Page 2 of T4-LDS-0245-2, this option is available for all parts in the series, and the factory must be consulted for minimum order quantities. The electrical and mechanical specifications remain identical to the bulk version.
What is the maximum Zener current IZM for JAN1N4126D-1/TR?
The maximum Zener current IZM for JAN1N4126D-1/TR is 40 mA, as specified in the Electrical Characteristics table on Page 3 of T4-LDS-0245-2. This value corresponds to the 500 mW power rating derated at higher ambient temperatures and ensures safe continuous operation without exceeding thermal limits in DO-35 package configurations.
How is polarity marked on JAN1N4126D-1/TR?
Polarity on JAN1N4126D-1/TR is marked by a cathode band on the glass body; the banded end is the cathode and must be held positive relative to the anode for proper Zener regulation. This marking convention is explicitly defined in the Mechanical and Packaging section on Page 2 of T4-LDS-0245-2 and aligns with JEDEC DO-35 standards.
JAN1N4126D-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:
- ±1%
- 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)
JAN1N4126D-1/TR FAQ
1.How can I place an order for JAN1N4126D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4126D-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 JAN1N4126D-1/TR reliable?
The price and inventory of JAN1N4126D-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 JAN1N4126D-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4126D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4126D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4126D-1/TR?
JAN1N4126D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4126D-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 JAN1N4126D-1/TR?
For technical support, including JAN1N4126D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4126D-1/TR requirements.
6.How does Aetrix verify that JAN1N4126D-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4126D-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 JAN1N4126D-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4126D-1/TR?
All JAN1N4126D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4126D-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 JAN1N4126D-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4126D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4126D-1/TR Tags
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