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Microchip Technology JANTX1N4128-1/TR
- Part No.:
- JANTX1N4128-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4128-1/TR.pdf
- Description:
- DIODE ZENER 60V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,822
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Product details
Overview
JANTX1N4128-1/TR from Microsemi is a 60 V, 500 mW axial-leaded glass Zener diode in DO-35 (DO-204AH) package, qualified to JANTX level per MIL-PRF-19500/435, with 1% Zener voltage tolerance, 400 Ω dynamic impedance at 250 mA test current, and 0.01 µA maximum reverse leakage at 45.6 V. It serves as a precision voltage reference in military-grade power regulation circuits.
For engineers reviewing the JANTX1N4128-1/TR datasheet, JANTX1N4128-1/TR pinout, JANTX1N4128-1/TR application, or JANTX1N4128-1/TR equivalent, key selection criteria include its 60 V nominal Zener voltage, 1% tolerance, JANTX reliability qualification, DO-35 thermal resistance (RθJL = 250 °C/W), and low noise density (≤1 µV/√Hz below 6.8 V).
Technical Context
This device operates in reverse breakdown mode with cathode band indicating polarity, requiring banded end to be positive relative to anode for regulation. Its metallurgically bonded construction ensures stable Zener voltage under thermal cycling and radiation exposure.
It exhibits a +0.100 %/°C temperature coefficient above 60 V, enabling predictable drift compensation in high-temperature environments, and maintains ≤0.01 µA reverse leakage up to 45.6 V - critical for low-power standby regulation in avionics and space-qualified systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 60.0 V at 250 mA test current - sets precise regulation point for 54–66 V supply rails |
| Zener Voltage Tolerance | ±1% - enables tight voltage margin control in safety-critical analog monitoring circuits |
| Power Dissipation | 500 mW at 25 °C lead temperature - supports continuous regulation without heatsinking in compact chassis mounts |
| Dynamic Impedance | 400 Ω at IZT = 250 mA - limits output voltage variation to <24 mV per 10 mA load change |
| Reverse Leakage Current | ≤0.01 µA at 45.6 V - ensures negligible quiescent current draw in battery-backed hold-up circuits |
| Temperature Coefficient | +0.100 %/°C - allows linear drift modeling from −65 °C to +175 °C for calibration compensation |
| Noise Density | ≤1 µV/√Hz - minimizes broadband noise injection into precision ADC reference paths |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with tin-lead plating; cathode indicated by single black band; body diameter 1.42–2.29 mm, overall length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system common; must remain at lower potential than cathode during regulation |
| Cathode (banded end) | Zener regulation output | Provides stabilized 60 V output when reverse-biased; polarity critical for proper operation |
Key Features
| Feature | Design Value |
|---|---|
| Internal metallurgical bond | Enables >10,000 thermal cycles between −65 °C and +175 °C without parameter shift |
| JANTX qualification per MIL-PRF-19500/435 | Guarantees screening for burn-in, temperature cycling, and hermeticity - required for DoD procurement |
| 1% Zener voltage tolerance | Reduces need for post-assembly trimming in flight control sensor signal conditioning |
| Low noise density (≤1 µV/√Hz) | Preserves SNR in 16-bit+ data acquisition front-ends using this diode as reference source |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Eliminates need for ESD handling protocols during manual assembly in cleanroom environments |
Applications
| Avionics Power Monitoring | Military Radar Bias Supply |
|---|---|
Use Scenario: Real-time detection of 28 V aircraft bus overvoltage events exceeding 32 V threshold. IC Role / Device Role / Timing Role: Zener clamp element in comparator input protection network. Use Value: 60 V rating provides 2× margin over worst-case transients; 1% tolerance ensures trip point repeatability across −55 °C to +125 °C. | Use Scenario: Stable bias voltage generation for GaN RF power amplifier gate drivers in airborne radar transceivers. IC Role / Device Role / Timing Role: Primary voltage reference for programmable bias controller ICs. Use Value: Metallurgical bond and JANTX qualification ensure no parametric drift after 1000 hrs of 125 °C life testing. |
| Satellite Payload Telemetry | Nuclear Instrumentation |
Use Scenario: Reference voltage source for radiation-hardened ADCs measuring solar array current in LEO orbit. IC Role / Device Role / Timing Role: Precision shunt regulator feeding ADC reference input. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in 10 krad(Si) total dose environments. | Use Scenario: High-stability voltage reference in neutron detector pulse-height analyzers operating inside reactor containment. IC Role / Device Role / Timing Role: Zener-based voltage standard for charge-to-voltage conversion circuitry. Use Value: ≤0.01 µA leakage prevents baseline drift in femtoamp-level current measurement paths over 10-year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4128US-1 | Same 60 V/1% spec but in DO-213AA surface-mount package; RθJA = 400 °C/W vs. 300 °C/W for DO-35 | Requires PCB reflow process; unsuitable for through-hole prototyping or chassis mounting | Select when automated SMT assembly and board space constraints outweigh thermal performance needs |
| JAN1N4128-1 | Identical electrical specs but qualified only to JAN level (less rigorous screening than JANTX) | Lacks extended life test and lot acceptance test requirements mandated for JANTX | Select only for non-safety-critical subsystems where full JANTX documentation traceability is not contractually required |
Compared with JANTX1N4128-1/TR, the 1N4128US-1 trades thermal performance for mountability in dense layouts, while JAN1N4128-1 reduces cost and lead time at the expense of MIL-PRF-19500/435 JANTX-level reliability assurance.
Availability
JANTX1N4128-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, military radar bias supply, and satellite payload telemetry requiring stable component supply under extended temperature and radiation exposure conditions.
Supply support for JANTX1N4128-1/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 semiconductors for aerospace, defense, and industrial markets, with expertise in radiation-hardened and mil-spec discrete components.
The JANTX1N4128-1/TR belongs to Microsemi's legacy 1N4099–1N4135 family of metallurgically bonded Zener diodes, engineered specifically for voltage regulation in mission-critical systems where long-term stability under extreme environmental stress is mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4128-1/TR?
JANTX1N4128-1/TR has a ±1% Zener voltage tolerance at 250 mA test current, corresponding to a 60.0 V nominal rating with a guaranteed range of 59.4 V to 60.6 V. This tight tolerance is achieved via post-trim screening and is maintained across the full −65 °C to +175 °C junction temperature range specified in MIL-PRF-19500/435. The JANTX1N4128-1/TR datasheet confirms this value in Table 1 on page 3.
Is JANTX1N4128-1/TR RoHS compliant?
No, JANTX1N4128-1/TR is not RoHS compliant. Per the T4-LDS-0245-2 datasheet, RoHS-compliant versions (suffix "e3") are available only for commercial-grade parts, not for JANTX-qualified devices. The JANTX1N4128-1/TR uses traditional tin-lead plating per MIL-STD-750 Method 2026 and is intended for applications where lead-free compliance is not mandated by program requirements.
What is the maximum reverse leakage current for JANTX1N4128-1/TR?
The maximum reverse leakage current for JANTX1N4128-1/TR is 0.01 µA at 45.6 V (76% of nominal Zener voltage), as specified in the Electrical Characteristics table on page 3 of the datasheet. This ultra-low leakage supports use in high-impedance bias networks and battery-operated systems where standby current must remain below 100 pA per node.
Can JANTX1N4128-1/TR be used in surface-mount designs?
No, JANTX1N4128-1/TR 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, Microsemi offers the 1N4128US-1 in DO-213AA package - however, that part carries only commercial qualification and lacks JANTX-level screening. The JANTX1N4128-1/TR requires through-hole mounting with ≥3/8″ lead length for thermal performance compliance.
What is the temperature coefficient of JANTX1N4128-1/TR?
JANTX1N4128-1/TR has a temperature coefficient of +0.100 %/°C, meaning its Zener voltage increases by 0.06 V per 1 °C rise in junction temperature. This positive, linear drift is documented in the Electrical Characteristics table and enables accurate compensation in wide-temperature-range applications such as engine-mounted sensors. The JANTX1N4128-1/TR specification sheet confirms this value applies across the full operational temperature range.
JANTX1N4128-1/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):
- 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/TR FAQ
1.How can I place an order for JANTX1N4128-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4128-1/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 JANTX1N4128-1/TR reliable?
The price and inventory of JANTX1N4128-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4128-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4128-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4128-1/TR transactions.
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4.How is shipping managed for JANTX1N4128-1/TR?
JANTX1N4128-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4128-1/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 JANTX1N4128-1/TR?
For technical support, including JANTX1N4128-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4128-1/TR requirements.
6.How does Aetrix verify that JANTX1N4128-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4128-1/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 JANTX1N4128-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4128-1/TR?
All JANTX1N4128-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4128-1/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 JANTX1N4128-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4128-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4128-1/TR Tags
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