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Microchip Technology JANTX1N4128-1
- Part No.:
- JANTX1N4128-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4128-1.pdf
- Description:
- DIODE ZENER 60V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,371
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Product details
Overview
JANTX1N4128-1 from Microsemi is a 500 mW, 60 V Zener voltage regulator diode in DO-35 glass axial-leaded package, qualified to MIL-PRF-19500/435 JANTX level, with 1% voltage tolerance, 400 Ω dynamic impedance at 250 mA, and maximum reverse leakage of 0.01 µA at 45.6 V. It serves as a precision reference in military-grade power supply regulation and analog circuit biasing.
For engineers reviewing the JANTX1N4128-1 datasheet, JANTX1N4128-1 pinout, JANTX1N4128-1 application, or JANTX1N4128-1 equivalent, key selection criteria include its 60 V nominal Zener voltage, JANTX reliability qualification, DO-35 thermal resistance (RθJL = 250 °C/W), low noise density (≤1 µV/√Hz below 6.8 V), and radiation-hardened construction per MicroNote 050.
Technical Context
The JANTX1N4128-1 operates in reverse breakdown mode with cathode-banded polarity, requiring the banded end to be held positive relative to the anode for regulation. Its metallurgically bonded junction ensures stable voltage reference over temperature (αVZ = +0.100 %/°C) and high-reliability operation across -65 °C to +175 °C junction range.
It delivers regulated output at IZT = 250 mA with VZ = 60.0 V ±1%, exhibits minimal capacitance (typical <2 pF per Figure 3), and maintains low noise density - critical for precision analog signal chains and low-jitter timing references in aerospace avionics and test instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 60.0 V ±1% at 250 mA - enables precise 60 V rail regulation in high-voltage analog front-ends |
| Power Dissipation | 500 mW @ TL = 25 °C - supports stable operation with linear derating to zero at 175 °C |
| Dynamic Impedance ZZT | 400 Ω max at 250 mA - ensures tight regulation under varying load current |
| Reverse Leakage IR | ≤0.01 µA at 45.6 V - guarantees negligible current draw in standby or high-impedance reference nodes |
| Temp Coefficient αVZ | +0.100 %/°C - predictable positive drift simplifies temperature compensation in wide-range environments |
| Noise Density | ≤1 µV/√Hz - ultra-low broadband noise preserves SNR in precision measurement circuits |
| Junction Temp Range | -65 °C to +175 °C - certified for extended operation in harsh military and space platforms |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package; cathode indicated by band; tin-lead plating; weight ≈0.2 g; lead length 25.4–38.1 mm.
| 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 Terminal | Provides stable 60 V reference when reverse-biased; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Internal Metallurgical Bond | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| MIL-PRF-19500/435 JANTX Qualification | Validated screening for burn-in, temperature cycling, and life testing per military standards |
| Radiation Hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 |
| Low Capacitance | Typical <2 pF - minimizes phase shift and loading in high-frequency feedback paths |
| ESD Robustness | Non-sensitive per MIL-STD-750 Method 1020 - withstands handling without protection circuitry |
Applications
| Aerospace Power Conditioning | Military Avionics Reference |
|---|---|
Use Scenario: Regulating auxiliary 60 V bus in satellite power distribution units where voltage stability over temperature and radiation exposure is mission-critical. IC Role / Device Role / Timing Role: Zener diode acting as primary shunt reference for DC-DC converter feedback loop. Use Value: Maintains ±1% output accuracy across -55 °C to +125 °C ambient with no calibration drift due to metallurgical bond integrity. | Use Scenario: Providing stable bias voltage for RF amplifier stages in airborne radar transceivers operating in high-G and vibration environments. IC Role / Device Role / Timing Role: Precision voltage reference for gain-setting networks and local oscillator tuning circuits. Use Value: Ultra-low noise density (<1 µV/√Hz) prevents phase noise degradation in L-band synthesizers. |
| Test Equipment Calibration | Nuclear Instrumentation |
Use Scenario: Serving as traceable 60 V reference standard in portable multimeter calibration rigs used by field service technicians. IC Role / Device Role / Timing Role: Primary voltage standard in automated calibration subsystems requiring NIST-traceable stability. Use Value: JANTX qualification ensures long-term repeatability and lot-to-lot consistency required for metrology-grade equipment. | Use Scenario: Biasing photomultiplier tube (PMT) dynode chains in radiation detection systems deployed in nuclear reactor monitoring. IC Role / Device Role / Timing Role: High-voltage Zener reference enabling accurate pulse-height discrimination. Use Value: Radiation hardness allows uninterrupted operation in high-dose-rate zones without parameter shift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4128US (Microchip) | Same 60 V, 1% tolerance, but in surface-mount DO-213AA package; RθJA = 400 °C/W vs. 300 °C/W for JANTX1N4128-1 | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy board repair | Select when automated assembly and space-constrained layouts outweigh thermal performance needs |
| JAN1N4128-1 (Microsemi) | Identical electrical specs and DO-35 package, but qualified only to JAN level (less stringent screening than JANTX) | Approved for non-critical commercial/military hybrids; not cleared for flight hardware or Class H applications | Select only if full JANTX screening is not mandated by program requirements |
Compared with 1N4128US and JAN1N4128-1, the JANTX1N4128-1 provides superior thermal performance (RθJL = 250 °C/W), full JANTX-level screening for burn-in and life testing, and guaranteed radiation hardness - making it the sole choice for Class H aerospace and safety-critical defense systems.
Availability
JANTX1N4128-1 is available at Aetrix Electronics and suitable for aerospace power conditioning, military avionics reference, and nuclear instrumentation requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for JANTX1N4128-1 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) designs high-reliability semiconductors for aerospace, defense, and industrial markets, with expertise in radiation-hardened and mil-qualified discrete components.
The JANTX1N4128-1 belongs to Microsemi's legacy 1N4099–1N4135 family of 500 mW Zener regulators, engineered specifically for precision voltage reference in mission-critical systems where parametric stability, environmental resilience, and qualification integrity are non-negotiable.
FAQ
What is the Zener voltage tolerance and test current for JANTX1N4128-1?
The JANTX1N4128-1 has a nominal Zener voltage of 60.0 V with ±1% tolerance, measured at a Zener test current (IZT) of 250 mA. This tight tolerance ensures consistent regulation in high-precision applications such as avionics power supplies and calibration standards where voltage drift must remain within strict limits across temperature and time.
Is JANTX1N4128-1 RoHS compliant?
No, JANTX1N4128-1 is not RoHS compliant. Per the datasheet, RoHS-compliant versions (suffix "e3") are available only for commercial-grade variants (e.g., 1N4128-1e3), not for JANTX-qualified parts. The JANTX1N4128-1 uses traditional tin-lead plating to meet MIL-STD-750 solderability requirements and maintain compatibility with legacy military assembly processes.
What is the maximum reverse leakage current specification for JANTX1N4128-1?
The maximum reverse leakage current (IR) for JANTX1N4128-1 is 0.01 µA at 45.6 V, as specified in the Electrical Characteristics table. This extremely low leakage ensures minimal power loss and high impedance in reference node applications, preserving accuracy in high-gain analog circuits and battery-powered instrumentation where standby current must be minimized.
How does the temperature coefficient of JANTX1N4128-1 affect its performance in wide-temperature environments?
JANTX1N4128-1 has a temperature coefficient αVZ of +0.100 %/°C, meaning its Zener voltage increases predictably with rising temperature. This positive, linear drift allows straightforward compensation in circuits where temperature-induced error must be modeled or canceled - especially valuable in aerospace systems operating from -65 °C to +175 °C, where uncontrolled drift would compromise regulation accuracy.
Can JANTX1N4128-1 be used in surface-mount designs?
No, JANTX1N4128-1 is packaged exclusively in the axial-leaded DO-35 (DO-204AH) glass case and is not suitable for surface-mount assembly. For SMT-compatible alternatives, consider Microchip's 1N4128US in DO-213AA package - though it lacks JANTX qualification and has higher thermal resistance. JANTX1N4128-1 requires through-hole mounting with ≥10 mm lead length for optimal thermal performance per RθJL spec.
JANTX1N4128-1 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):
- 60 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 400 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 45.6 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)
JANTX1N4128-1 FAQ
1.How can I place an order for JANTX1N4128-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4128-1 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 JANTX1N4128-1 reliable?
The price and inventory of JANTX1N4128-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4128-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4128-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4128-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4128-1?
JANTX1N4128-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4128-1 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 JANTX1N4128-1?
For technical support, including JANTX1N4128-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4128-1 requirements.
6.How does Aetrix verify that JANTX1N4128-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4128-1 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 JANTX1N4128-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4128-1?
All JANTX1N4128-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4128-1, 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 JANTX1N4128-1 part is unused and in its original packaging.
Return procedure for JANTX1N4128-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4128-1 Tags
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