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Microchip Technology JANTX1N4120D-1
- Part No.:
- JANTX1N4120D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4120D-1.pdf
- Description:
- DIODE ZENER 30V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,108
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Product details
Overview
JANTX1N4120D-1 from Microsemi is a 1% tolerance, 30 V, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies, reference circuits, and overvoltage protection.
For engineers reviewing the JANTX1N4120D-1 datasheet, JANTX1N4120D-1 pinout, JANTX1N4120D-1 application, or JANTX1N4120D-1 equivalent, key selection criteria include Zener voltage tolerance (±1%), dynamic impedance (200 Ω @ 250 mA), noise density (1 µV/√Hz), temperature coefficient (+0.095 %/°C), and MIL-qualified thermal derating behavior.
Technical Context
This device operates as a precision shunt regulator with a nominal Zener voltage of 30.0 V at 250 mA test current, exhibiting low noise density (1 µV/√Hz) and stable regulation across –65 °C to +175 °C junction temperature range. Its metallurgical bond construction ensures robustness under thermal cycling and radiation exposure.
The JANTX1N4120D-1 features a maximum reverse leakage current of 0.01 µA at 22.8 V and dynamic impedance of 200 Ω measured at 10% AC modulation superimposed on IZT, supporting stable reference performance in low-noise analog and mixed-signal systems requiring MIL-spec reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 30.0 V ±1% at 250 mA - enables precise voltage clamping and reference generation in regulated power rails. |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - defines safe continuous operating envelope on standard FR4 PCBs. |
| Dynamic Impedance ZZT | 200 Ω @ 250 mA - determines output voltage stability under load transients in feedback or reference paths. |
| Noise Density | 1 µV/√Hz - critical for low-noise analog references in instrumentation and ADC/DAC biasing. |
| Temp. Coefficient αVZ | +0.095 %/°C - quantifies drift magnitude over temperature, enabling accurate error budgeting in wide-range environments. |
| Reverse Leakage IR | 0.01 µA @ 22.8 V - ensures minimal parasitic current draw in high-impedance sensing or standby circuits. |
| Junction Temp. Range | –65 °C to +175 °C - supports operation in extreme environments including space-grade and engine-mounted electronics. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by band; banded end is positive during Zener regulation. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential point in shunt regulation configuration. |
| Cathode | Zener regulation node | Banded terminal; connected to input rail or voltage source to be clamped/regulatd. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated screening, testing, and traceability for aerospace and defense programs requiring assured reliability. |
| 1% Zener voltage tolerance | Reduces calibration overhead and improves accuracy in precision reference designs without post-manufacture trimming. |
| Metallurgical bond construction | Enhances thermal and mechanical robustness versus epoxy-bonded alternatives, critical for high-vibration or thermal-cycling applications. |
| Low noise density (1 µV/√Hz) | Supports use in ultra-low-noise analog front-ends where reference noise directly impacts signal-to-noise ratio. |
| Hermetic glass packaging | Prevents moisture ingress and long-term parameter drift, ensuring stable performance over decades in sealed enclosures. |
Applications
| Aerospace Power Conditioning | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary 30 V supply rail in satellite payload power management unit exposed to thermal vacuum and radiation. IC Role / Device Role / Timing Role: Shunt Zener regulator providing stable 30 V reference for DC-DC converter feedback and sensor biasing. Use Value: JANTX1N4120D-1's JANTX qualification, –65 °C to +175 °C operation, and inherent radiation hardness ensure uninterrupted regulation under mission-critical conditions. | Use Scenario: Precision voltage reference in radar receiver analog front-end requiring low-noise, stable bias for LNA stages. IC Role / Device Role / Timing Role: Low-noise Zener reference source for op-amp gain-setting and ADC reference divider networks. Use Value: 1 µV/√Hz noise density and ±1% tolerance minimize baseline offset drift and quantization error in high-dynamic-range receivers. |
| Industrial Control Safety Circuit | Avionics Overvoltage Protection |
Use Scenario: Clamp circuit in programmable logic controller (PLC) analog input module protecting against field-wiring transients up to 60 V. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting input voltage to 30 V while absorbing surge energy within 500 mW rating. Use Value: DO-35 package allows through-hole mounting with mechanical retention, and 200 Ω ZZT ensures predictable clamping threshold under fast-rising transients. | Use Scenario: Overvoltage monitor in aircraft flight control computer power interface detecting >30 V excursions on 28 V DC bus. IC Role / Device Role / Timing Role: Zener-based comparator reference enabling fail-safe shutdown when bus voltage exceeds design limit. Use Value: +0.095 %/°C tempco and MIL-qualified consistency allow deterministic trip-point design across –55 °C to +85 °C operational envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4120D-1 | Higher screening level (JANTXV vs JANTX); tighter parametric limits and extended life testing. | Suitable for mission-critical subsystems where failure probability must be minimized beyond JANTX requirements. | Select when program specification mandates JANTXV-level reliability or extended burn-in is required. |
| 1N4120US-1 | Same electrical specs but in surface-mount DO-213AA package; no axial leads. | Used in space-constrained or automated assembly contexts where through-hole mounting is impractical. | Select when board layout requires SMT placement or reflow compatibility is mandatory. |
Compared with JANTX1N4120D-1, the JANTXV variant offers enhanced screening for higher assurance, while the 1N4120US-1 provides identical regulation performance in a compact surface-mount form factor-neither is pin-compatible due to differing packages, and both require layout adaptation.
Availability
JANTX1N4120D-1 is available at Aetrix Electronics and suitable for aerospace power conditioning, defense system reference, and industrial control safety circuits requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JANTX1N4120D-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, radiation-hardened, and military-grade analog and discrete components.
The JANTX1N4120D-1 belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, designed specifically for voltage regulation and reference applications in harsh-environment electronics where long-term stability and guaranteed performance are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTX1N4120D-1?
JANTX1N4120D-1 has a nominal Zener voltage of 30.0 V with ±1% tolerance, as indicated by the "D" suffix in its part number per Microsemi's nomenclature. This tight tolerance is achieved through post-production screening and is maintained across the full operating temperature range of –65 °C to +175 °C, making JANTX1N4120D-1 suitable for precision reference applications where calibration drift must be minimized.
Is JANTX1N4120D-1 RoHS compliant?
No, JANTX1N4120D-1 is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants-not for JAN, JANTX, JANTXV, or JANS reliability levels. JANTX1N4120D-1 retains traditional tin-lead plating to meet MIL-STD-750 solderability requirements and ensure compatibility with legacy aerospace assembly processes.
What is the maximum reverse leakage current for JANTX1N4120D-1?
The maximum reverse leakage current for JANTX1N4120D-1 is 0.01 µA at 22.8 V (76% of nominal VZ). This ultra-low leakage is specified in the Electrical Characteristics table and reflects the device's suitability for high-impedance bias networks and low-power standby circuits where parasitic current must be strictly bounded.
How does the thermal derating of JANTX1N4120D-1 work?
JANTX1N4120D-1 is rated for 500 mW at 25 °C lead temperature and linearly derates to zero power dissipation at 175 °C. Derating begins at 50 °C for lead temperature or 25 °C for ambient on typical FR4 boards. This behavior is defined in Figure 2 of the datasheet and must be applied in thermal design to ensure JANTX1N4120D-1 remains within safe operating limits under worst-case ambient and power conditions.
Can JANTX1N4120D-1 be used in surface-mount applications?
No, JANTX1N4120D-1 uses the axial-leaded DO-35 (DO-204AH) package and is not suitable for surface-mount assembly. For SMT equivalents, Microsemi offers the 1N4120US-1 in DO-213AA package - same electrical specs but different mechanical form. JANTX1N4120D-1 requires through-hole mounting with appropriate lead forming and soldering per MIL-STD-2000.
JANTX1N4120D-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):
- 30 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 22.8 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)
JANTX1N4120D-1 FAQ
1.How can I place an order for JANTX1N4120D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4120D-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 JANTX1N4120D-1 reliable?
The price and inventory of JANTX1N4120D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4120D-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4120D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4120D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4120D-1?
JANTX1N4120D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4120D-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 JANTX1N4120D-1?
For technical support, including JANTX1N4120D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4120D-1 requirements.
6.How does Aetrix verify that JANTX1N4120D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4120D-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 JANTX1N4120D-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4120D-1?
All JANTX1N4120D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4120D-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 JANTX1N4120D-1 part is unused and in its original packaging.
Return procedure for JANTX1N4120D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4120D-1 Tags
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