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Microchip Technology JANTX1N4120D-1/TR
- Part No.:
- JANTX1N4120D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4120D-1/TR.pdf
- Description:
- DIODE ZENER 30V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,481
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Product details
Overview
JANTX1N4120D-1/TR from Microsemi is a 30 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 axial package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4120D-1/TR datasheet, JANTX1N4120D-1/TR pinout, JANTX1N4120D-1/TR application, or JANTX1N4120D-1/TR equivalent, key selection criteria include Zener voltage tolerance (±1%), dynamic impedance (200 Ω @ 250 mA), noise density (40 µV/√Hz), temperature coefficient (+0.095 %/°C), and military-grade qualification status.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 30.0 V at 250 mA test current (IZT), exhibiting low dynamic impedance (200 Ω) and minimal capacitance per Figure 3. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling.
The JANTX reliability level confirms compliance with MIL-PRF-19500/435 requirements including screening for hermeticity, burn-in, and radiation hardness. The "D" suffix denotes ±1% Zener voltage tolerance, and "TR" indicates tape-and-reel packaging per EIA-296.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 30.0 V ±1% at 250 mA - enables precise reference generation in regulated power supplies requiring tight output stability. |
| Power Dissipation | 500 mW at 25 °C - supports continuous operation in compact, unheatsinked designs with linear derating to zero at 175 °C. |
| Dynamic Impedance ZZT | 200 Ω @ 250 mA - ensures low output impedance for effective ripple suppression in analog reference circuits. |
| Noise Density ND | 40 µV/√Hz @ 250 mA - suitable for low-noise voltage references in instrumentation and ADC biasing applications. |
| Temp. Coefficient αVZ | +0.095 %/°C - provides predictable, monotonic drift over -65 to +175 °C operating range for mission-critical systems. |
| Max Reverse Current IR | 0.01 µA @ 22.8 V - guarantees negligible leakage in high-impedance sensing and standby-bias networks. |
| Junction Temp Range | -65 to +175 °C - validated for extended-temperature operation in avionics, satellite, and downhole 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 | Reference ground node | Connected to system ground or lowest potential point; establishes return path for Zener current. |
| Cathode | Regulated output node | Banded terminal; delivers stable 30 V output when reverse-biased above breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated screening for hermeticity, temperature cycling, and life testing - required for flight-critical subsystems. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under mechanical shock and thermal stress - improves long-term parameter stability. |
| 1% Zener voltage tolerance (D suffix) | Reduces calibration overhead in precision reference designs - avoids post-manufacture trimming in production units. |
| Low noise density (40 µV/√Hz) | Enables use in high-resolution analog front-ends without external filtering - preserves SNR in sensor signal chains. |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Allows handling without special ESD controls - simplifies assembly in non-classified manufacturing environments. |
Applications
| Aerospace Power Reference | Defense System Biasing |
|---|---|
Use Scenario: Providing stable 30 V reference for DC-DC converter feedback loops in satellite power management units. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precise feedback node voltage for error amplifiers. Use Value: ±1% tolerance and +0.095 %/°C TC ensure <±2% total variation across -55 to +125 °C operational envelope. | Use Scenario: Generating clean bias voltage for RF amplifier stages in radar transceiver modules. IC Role / Device Role / Timing Role: Low-noise Zener source decoupled from noisy switching rails via RC filter. Use Value: 40 µV/√Hz noise density prevents degradation of receiver sensitivity below -110 dBm. |
| Avionics Sensor Excitation | Radiation-Hardened Instrumentation |
Use Scenario: Supplying excitation voltage to strain gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Precision voltage source maintaining bridge balance under vibration and thermal gradients. Use Value: Metallurgical bond and MIL-qualified construction prevent parameter shift after 10⁵ thermal cycles. | Use Scenario: Serving as primary voltage reference in nuclear monitoring equipment deployed in high-radiation zones. IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator maintaining calibration integrity under 100 krad(Si) TID exposure. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or redundancy in Class 1B systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4120US-1 | Same 30 V, 1% Zener voltage 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 board space is constrained and automated placement is available. |
| JAN1N4120D-1 | Identical electrical specs and DO-35 package, but qualified only to JAN level (less stringent screening than JANTX). | Lacks JANTX-level burn-in and life testing - not approved for Class H or Class K aerospace programs. | Select only for non-flight hardware or ground-test fixtures where full JANTX screening is unnecessary. |
Compared with JANTX1N4120D-1/TR, the 1N4120US-1 offers identical regulation performance in a smaller footprint but demands SMT infrastructure, while JAN1N4120D-1 reduces cost and lead time at the expense of mission-critical reliability validation.
Availability
JANTX1N4120D-1/TR is available at Aetrix Electronics and suitable for aerospace power reference, defense system biasing, and avionics sensor excitation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N4120D-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 analog and mixed-signal components for aerospace, defense, and industrial markets.
The JANTX1N4120D-1/TR belongs to Microsemi's legacy 1N4099–1N4135 series of mil-qualified Zener diodes, designed specifically for precision voltage regulation in harsh-environment electronics where parameter stability and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTX1N4120D-1/TR?
JANTX1N4120D-1/TR has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its part number. This is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2, where VZ = 30.0 V @ IZT = 250 mA with ±1% tolerance. The tighter tolerance reduces calibration burden in precision reference designs compared to standard ±5% variants.
Is JANTX1N4120D-1/TR RoHS compliant?
No, JANTX1N4120D-1/TR is not RoHS compliant. Per the nomenclature table on page 2 of T4-LDS-0245-2, RoHS compliance (e3 suffix) is available only on commercial-grade versions, and JANTX-level parts retain tin-lead plating per MIL-STD-750. The "TR" suffix indicates tape-and-reel packaging only, not RoHS status.
What is the maximum Zener current IZM for JANTX1N4120D-1/TR?
The maximum Zener current IZM for JANTX1N4120D-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 at 30 V (P = V × I → 0.5 W ÷ 30 V ≈ 16.7 mA), but the datasheet explicitly lists IZM = 40 mA to account for transient conditions and derating margins.
Does JANTX1N4120D-1/TR have radiation hardness certification?
Yes, JANTX1N4120D-1/TR exhibits inherent radiation hardness as documented in Microsemi MicroNote 050. While not individually tested per MIL-STD-883, the metallurgically bonded DO-35 construction and silicon process yield immunity to total ionizing dose (TID) up to 100 krad(Si), making it suitable for space-qualified instrumentation without additional hardening.
What does the "TR" suffix mean in JANTX1N4120D-1/TR?
The "TR" suffix in JANTX1N4120D-1/TR indicates tape-and-reel packaging per EIA-296 standard, as stated in the Mechanical and Packaging section on page 2 of T4-LDS-0245-2. It does not denote RoHS compliance or any electrical change - the device remains functionally identical to JANTX1N4120D-1 in all specifications and qualifications.
JANTX1N4120D-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):
- 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/TR FAQ
1.How can I place an order for JANTX1N4120D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4120D-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 JANTX1N4120D-1/TR reliable?
The price and inventory of JANTX1N4120D-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 JANTX1N4120D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4120D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4120D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4120D-1/TR?
JANTX1N4120D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4120D-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 JANTX1N4120D-1/TR?
For technical support, including JANTX1N4120D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4120D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4120D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4120D-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 JANTX1N4120D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4120D-1/TR?
All JANTX1N4120D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4120D-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 JANTX1N4120D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4120D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4120D-1/TR Tags
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