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Microchip Technology JAN1N4120D-1/TR
- Part No.:
- JAN1N4120D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4120D-1/TR.pdf
- Description:
- DIODE ZENER 30V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,679
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Product details
Overview
JAN1N4120D-1/TR from Microsemi is a 30 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial package, qualified to JAN level per MIL-PRF-19500/435 for high-reliability voltage regulation in military and aerospace power supply circuits.
For engineers reviewing the JAN1N4120D-1/TR datasheet, JAN1N4120D-1/TR pinout, JAN1N4120D-1/TR application, or JAN1N4120D-1/TR equivalent, key selection criteria include Zener voltage tolerance (±1%), dynamic impedance (200 Ω @ 250 mA), noise density (13 µV/√Hz), temperature coefficient (+0.095 %/°C), and JANS-qualified thermal robustness up to +175 °C junction temperature.
Technical Context
This device operates as a precision shunt 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 (typical 13 pF). Its metallurgical bond construction ensures stable regulation across wide current and temperature ranges.
Designed for high-reliability environments, it supports reverse leakage current ≤0.01 µA at 22.8 V (VR), maintains ±1% voltage tolerance, and delivers predictable temperature coefficient behavior (+0.095 %/°C), enabling accurate voltage reference design without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30.0 V at IZT = 250 mA - defines precise regulation point for reference and clamp circuits |
| Zener Tolerance | ±1% - enables tight voltage control in critical analog and power monitoring systems |
| Power Dissipation | 500 mW at TC = 25 °C - supports stable operation in compact, conduction-cooled designs |
| Dynamic Impedance (ZZT) | 200 Ω @ IZT - ensures low output impedance for effective ripple suppression |
| Noise Density (ND) | 13 µV/√Hz @ IZT - minimizes voltage reference noise in precision instrumentation |
| Temp Coefficient (αVZ) | +0.095 %/°C - provides predictable drift behavior for compensated reference designs |
| Max Reverse Leakage (IR) | 0.01 µA @ VR = 22.8 V - guarantees low standby current in battery-backed systems |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by band; 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 lower-potential rail during Zener operation |
| Cathode (banded end) | Zener regulation terminal | Applied positive bias relative to anode to enable breakdown and voltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for defense/aerospace use with full traceability and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical stress |
| Low noise density (13 µV/√Hz) | Enables use in high-resolution ADC references and low-noise analog front-ends |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in harsh environments |
| ESD immunity (MIL-STD-750 Method 1020) | Supports handling and assembly without special ESD controls |
Applications
| Avionics Power Monitoring | Military Radar Bias Supply |
|---|---|
Use Scenario: Regulating reference voltage for analog-to-digital converters measuring 28 V DC bus voltage in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 30 V reference against load and line variation. Use Value: ±1% tolerance and +0.095 %/°C tempco ensure <±0.5% total error over –55 °C to +125 °C operating range. | Use Scenario: Clamping and stabilizing high-voltage bias rails feeding GaN RF amplifier stages in airborne radar transceivers. IC Role / Device Role / Timing Role: Precision Zener clamp protecting sensitive gate drivers from overvoltage transients. Use Value: 200 Ω dynamic impedance and 500 mW rating sustain transient energy without parametric shift. |
| Satellite Onboard Computer PSU | Tactical Radio Reference Generator |
Use Scenario: Generating stable 30 V reference for radiation-hardened voltage supervisors monitoring spacecraft power subsystems. IC Role / Device Role / Timing Role: Radiation-tolerant shunt regulator serving as primary voltage reference in fault-tolerant power sequencing logic. Use Value: Inherent radiation hardness per MicroNote 050 and JANS-level screening ensure >100 krad(Si) TID performance. | Use Scenario: Providing low-noise 30 V reference for frequency synthesizer PLLs in manpack HF/VHF radios. IC Role / Device Role / Timing Role: Low-noise Zener source for phase detector biasing and loop filter reference points. Use Value: 13 µV/√Hz noise density prevents phase jitter degradation in sub-10 Hz offset PLL applications. |
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 | Requires PCB rework for SMT assembly; lacks axial lead flexibility for prototyping or through-hole repair | Select when automated assembly and board space constraints outweigh manual serviceability needs |
| JANTXV1N4120D-1 | Identical electrical specs but qualified to JANTXV level with enhanced screening and tighter lot traceability | Required for programs mandating JANTXV-level documentation and extended burn-in testing | Select when program requirements exceed JAN-level screening, especially for flight-critical subsystems |
Compared with JAN1N4120D-1/TR, the 1N4120US-1 offers identical regulation performance in a space-saving SMT form factor, while JANTXV1N4120D-1 adds higher screening rigor-neither is pin-compatible due to differing packages or qualification scope, making them application-specific alternatives rather than drop-in replacements.
Availability
JAN1N4120D-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, military radar bias supply, and satellite onboard computer PSU requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JAN1N4120D-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, mixed-signal, and radiation-hardened components for defense, aerospace, and industrial markets.
The JAN1N4120D-1/TR belongs to Microsemi's legacy 1N4099–1N4135 series of metallurgically bonded Zener diodes, engineered specifically for precision voltage regulation in mission-critical mil-aero power systems where stability, longevity, and environmental resilience are non-negotiable.
FAQ
What is the Zener voltage tolerance of JAN1N4120D-1/TR?
JAN1N4120D-1/TR has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its nomenclature. This tight tolerance ensures the actual regulation voltage remains within 29.7 V to 30.3 V at 250 mA test current and 25 °C, supporting high-accuracy reference applications in military-grade power supplies where standard ±5% parts would introduce unacceptable error margins.
Is JAN1N4120D-1/TR RoHS compliant?
No, JAN1N4120D-1/TR is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions (e.g., 1N4120D-1e3); JAN-level parts like JAN1N4120D-1/TR retain traditional tin-lead plating to meet MIL-STD-750 solderability requirements and avoid reliability risks associated with pure matte-tin finishes in high-reliability thermal cycling environments.
What does the "TR" suffix indicate in JAN1N4120D-1/TR?
"TR" indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. JAN1N4120D-1/TR contains the same die, qualification, and electrical specs as JAN1N4120D-1, but is supplied on carrier tape instead of bulk or ammo-pack formats-critical for high-volume production of defense electronics requiring consistent feed reliability and traceability.
What is the maximum reverse leakage current for JAN1N4120D-1/TR?
JAN1N4120D-1/TR specifies a maximum reverse leakage current (IR) of 0.01 µA at VR = 22.8 V and 25 °C. This ultra-low leakage supports low-power standby modes in battery-operated avionics subsystems and ensures minimal loading on upstream regulators, preserving overall system efficiency without compromising regulation accuracy.
How is polarity marked on JAN1N4120D-1/TR?
Polarity is marked by a single black cathode band near one end of the DO-35 glass body. During Zener operation, the banded (cathode) end must be held positive relative to the unmarked (anode) end. Incorrect polarity will forward-bias the diode, resulting in ~1.1 V drop instead of 30 V regulation-and may cause irreversible damage if sustained at high current.
JAN1N4120D-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:
- -
- 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)
JAN1N4120D-1/TR FAQ
1.How can I place an order for JAN1N4120D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4120D-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 JAN1N4120D-1/TR reliable?
The price and inventory of JAN1N4120D-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 JAN1N4120D-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4120D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4120D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4120D-1/TR?
JAN1N4120D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4120D-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 JAN1N4120D-1/TR?
For technical support, including JAN1N4120D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4120D-1/TR requirements.
6.How does Aetrix verify that JAN1N4120D-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4120D-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 JAN1N4120D-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4120D-1/TR?
All JAN1N4120D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4120D-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 JAN1N4120D-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4120D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4120D-1/TR Tags
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