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Microchip Technology JAN1N4120C-1/TR
- Part No.:
- JAN1N4120C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4120C-1/TR.pdf
- Description:
- DIODE ZENER 30V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,666
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Product details
Overview
JAN1N4120C-1/TR from Microsemi is a 30 V, 2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JAN level per MIL-PRF-19500/435, used for precision voltage regulation in military and aerospace power supply reference circuits.
For engineers reviewing the JAN1N4120C-1/TR datasheet, JAN1N4120C-1/TR pinout, JAN1N4120C-1/TR application, or JAN1N4120C-1/TR equivalent, key selection criteria include Zener voltage tolerance (±2%), temperature coefficient (+0.095 %/°C), noise density (1 µV/√Hz), dynamic impedance (200 Ω), and JANS-qualified reliability for high-reliability embedded systems.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 30.0 V at 250 mA test current, exhibiting low dynamic impedance (200 Ω) and minimal capacitance (typical <2 pF). Its metallurgical bond construction ensures stable regulation across -65 °C to +175 °C junction temperature range.
The JAN1N4120C-1/TR delivers 1 µV/√Hz noise density at IZT, supports 40 mA maximum Zener current, and features a +0.095 %/°C temperature coefficient - optimized for stable reference performance under thermal stress in regulated DC-DC converter feedback paths and analog sensor biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 30.0 V ±2% at 250 mA - enables precise 30 V reference generation with tight tolerance for feedback loop accuracy |
| Power Dissipation | 500 mW at 25 °C - supports continuous regulation in compact axial-leaded designs without forced cooling |
| Dynamic Impedance ZZT | 200 Ω at 250 mA - ensures low output impedance for stable regulation under varying load conditions |
| Noise Density ND | 1 µV/√Hz at 250 mA - critical for low-noise analog references in instrumentation and signal conditioning |
| Temp Coefficient αVZ | +0.095 %/°C - predictable positive drift allows compensation in high-stability reference designs |
| Max Reverse Current IR | 0.01 µA at 22.8 V - guarantees minimal leakage in high-impedance bias networks |
| Junction Temp Range | -65 °C to +175 °C - validated for operation in extreme environments including space and avionics |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by band; leads are tin-lead plated and solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side in Zener regulation; carries full load current during reverse breakdown |
| Cathode (banded end) | Zener regulation terminal | Connected to higher-potential side; defines regulated output node in shunt regulator topology |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for defense/aerospace applications with full lot traceability and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| 1 µV/√Hz noise density | Enables use in ultra-low-noise voltage references for precision ADCs and DACs |
| Hermetic glass sealing | Prevents moisture ingress and parameter drift over decades in harsh environments |
| 2% Zener voltage tolerance | Reduces need for post-calibration in mission-critical voltage reference circuits |
Applications
| Aerospace Power Reference | Military Avionics Biasing |
|---|---|
Use Scenario: Stable 30 V reference in flight control system DC-DC converter feedback loops. IC Role / Device Role / Timing Role: Shunt Zener reference providing precision voltage setpoint for error amplifier input. Use Value: ±2% tolerance and +0.095 %/°C TC ensure <±0.5% total error over -55 °C to +125 °C operating range. | Use Scenario: Bias voltage source for RF front-end LNAs in tactical radios. IC Role / Device Role / Timing Role: Low-noise Zener regulator supplying clean 30 V to GaAs FET drain nodes. Use Value: 1 µV/√Hz noise density prevents degradation of receiver noise figure in sensitive receive paths. |
| Satellite Sensor Conditioning | Nuclear Instrumentation Reference |
Use Scenario: Reference for radiation-hardened analog front-ends measuring solar array current. IC Role / Device Role / Timing Role: Radiation-tolerant voltage reference maintaining accuracy after 100 krad(Si) TID exposure. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in LEO missions. | Use Scenario: Calibration reference in reactor monitoring systems requiring long-term stability. IC Role / Device Role / Timing Role: Hermetically sealed Zener providing traceable 30 V standard for periodic instrument recalibration. Use Value: Glass DO-35 package prevents parameter drift over 20+ year service life in inaccessible installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4120US-1 | Same 30 V, 2% Zener voltage but in surface-mount DO-213AA package; no axial leads | Requires PCB redesign for SMT assembly; lacks JAN qualification; rated only to JANTX level | Select when automated assembly and board space savings outweigh military qualification requirements |
| JAN1N4120D-1/TR | Identical 30 V rating and JAN qualification, but tighter 1% Zener tolerance (vs. 2% for JAN1N4120C-1/TR) | Higher cost and longer lead time; justified only where <±0.3 V absolute reference accuracy is mandatory | Select when system-level calibration budget demands sub-1% initial voltage error |
Compared with 1N4120US-1 and JAN1N4120D-1/TR, the JAN1N4120C-1/TR uniquely balances MIL-qualified reliability, axial-leaded through-hole compatibility, and 2% tolerance - making it optimal for legacy military hardware upgrades and repair programs where form-fit-function replacement is required.
Availability
JAN1N4120C-1/TR is available at Aetrix Electronics and suitable for aerospace power reference, military avionics biasing, and satellite sensor conditioning requiring stable component supply across extended product lifecycles.
Supply support for JAN1N4120C-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 JAN1N4120C-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, engineered specifically for voltage reference stability in defense, space, and nuclear instrumentation systems.
FAQ
What is the Zener voltage and tolerance of JAN1N4120C-1/TR?
JAN1N4120C-1/TR has a nominal Zener voltage of 30.0 V with a ±2% tolerance, measured at 250 mA test current and 25 °C ambient. This tolerance is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1, where "C" in the part number explicitly denotes 2% Zener voltage tolerance per the nomenclature guide.
Is JAN1N4120C-1/TR qualified to MIL-PRF-19500/435 standards?
Yes, JAN1N4120C-1/TR is qualified to JAN level per MIL-PRF-19500/435, as stated in the DESCRIPTION section on page 1 and verified in the PART NOMENCLATURE table where "JAN" prefix confirms compliance. It undergoes full screening including temperature cycling, burn-in, and parametric testing per the specification.
What is the maximum power dissipation and derating behavior of JAN1N4120C-1/TR?
JAN1N4120C-1/TR has a rated average power dissipation of 0.5 W at 25 °C, linearly derated to zero at 175 °C junction temperature. Derating begins at 50 °C lead temperature per Note 2 on page 1, with thermal resistance junction-to-ambient of 300 °C/W on FR4 board per the Maximum Ratings table.
Does JAN1N4120C-1/TR have low noise performance suitable for precision references?
Yes, JAN1N4120C-1/TR delivers 1 µV/√Hz noise density at 250 mA test current, as specified in the Electrical Characteristics table for 1N4120-1. This value is confirmed in the FEATURES section (page 1), which states noise falls to 1 µV/√Hz at lower voltages - directly applicable to the 30 V JAN1N4120C-1/TR variant.
What package type and marking does JAN1N4120C-1/TR use?
JAN1N4120C-1/TR uses the hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode indicated by a band. Per MECHANICAL AND PACKAGING (page 2), it is marked with the full part number and supplied in tape-and-reel format due to the "TR" suffix.
JAN1N4120C-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:
- ±2%
- Power - Max:
- -
- 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)
JAN1N4120C-1/TR FAQ
1.How can I place an order for JAN1N4120C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4120C-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 JAN1N4120C-1/TR reliable?
The price and inventory of JAN1N4120C-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 JAN1N4120C-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4120C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4120C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4120C-1/TR?
JAN1N4120C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4120C-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 JAN1N4120C-1/TR?
For technical support, including JAN1N4120C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4120C-1/TR requirements.
6.How does Aetrix verify that JAN1N4120C-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4120C-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 JAN1N4120C-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4120C-1/TR?
All JAN1N4120C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4120C-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 JAN1N4120C-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4120C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4120C-1/TR Tags
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