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Microchip Technology JAN1N4120D-1
- Part No.:
- JAN1N4120D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4120D-1.pdf
- Description:
- DIODE ZENER 30V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,001
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Product details
Overview
JAN1N4120D-1 from Microsemi is a 30 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4120D-1 datasheet, JAN1N4120D-1 pinout, JAN1N4120D-1 application, or JAN1N4120D-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 JANS-level radiation hardness.
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 (typ. <2 pF). Its metallurgical bond construction ensures stable regulation across -65 °C to +175 °C junction temperature range.
The JAN1N4120D-1 delivers 1% initial voltage tolerance and exhibits a positive temperature coefficient of +0.095 %/°C - critical for thermal stability in unregulated DC-DC feedback paths and reference circuits where drift must be minimized over wide ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 30.0 V ±1% at 250 mA - enables precise 30 V rail regulation with tight initial accuracy |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact, convection-cooled military PCBs |
| Dynamic Impedance ZZT | 200 Ω @ 250 mA - ensures low output impedance for effective ripple suppression in analog references |
| Noise Density ND | 1 µV/√Hz @ 250 mA - suitable for low-noise voltage references in precision instrumentation |
| Temp. Coefficient αVZ | +0.095 %/°C - predictable positive drift allows compensation in high-stability reference designs |
| Max Reverse Current IR | 0.01 µA @ 22.8 V - guarantees negligible leakage in high-impedance bias networks |
| Junction Temp Range | -65 °C to +175 °C - validated for extended-temperature operation in avionics and space-grade systems |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package. Cathode indicated by band; banded end is positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink terminal during Zener conduction | Connected to lower-potential node (e.g., ground or return path) in shunt regulator configuration |
| Cathode | Regulated output node | Banded end - connected to input supply; maintains 30 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock in flight-critical systems |
| JANS qualification per MIL-PRF-19500/435 | Validated for Class S (space) and Class H (high-reliability) applications with full lot traceability |
| 1% Zener voltage tolerance | Reduces need for post-assembly trimming in precision voltage references and sensor excitation circuits |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 - no derating required up to 100 krad(Si) |
| Low noise density | 1 µV/√Hz enables use in low-drift analog front-ends without external filtering |
Applications
| Aerospace Power Reference | Defense System Bias Network |
|---|---|
Use Scenario: Stable 30 V reference in satellite DC-DC converter feedback loop operating across -55 °C to +125 °C. IC Role / Device Role / Timing Role: Shunt Zener reference providing error amplifier input voltage for isolated flyback regulation. Use Value: 1% tolerance and +0.095 %/°C TC ensure <±2.5% total drift over full temperature range - meeting MIL-STD-704E line regulation requirements. | Use Scenario: Precision bias source for RF power amplifier stages in radar transceivers exposed to ESD and vibration. IC Role / Device Role / Timing Role: Low-noise, ESD-immune voltage clamp regulating gate bias in GaN HEMT driver circuits. Use Value: 1 µV/√Hz noise density prevents AM-to-PM conversion; non-sensitive ESD rating per MIL-STD-750 method 1020 eliminates need for external protection. |
| Nuclear Instrumentation Supply | High-Temp Industrial Sensor Excitation |
Use Scenario: Radiation-tolerant 30 V reference for scintillation detector PMT high-voltage supplies in nuclear monitoring equipment. IC Role / Device Role / Timing Role: Primary voltage reference in linear HV generator feedback path, operating continuously at 150 °C junction temperature. Use Value: Inherent radiation hardness (no TID-induced parameter shift) and 175 °C max TJ rating eliminate derating or shielding - reducing BOM count by one component. | Use Scenario: Excitation voltage source for RTD bridges in downhole oil/gas logging tools operating at 175 °C ambient. IC Role / Device Role / Timing Role: Stable shunt regulator supplying constant 30 V to Wheatstone bridge, compensating for lead resistance drift. Use Value: Metallurgical bond and -65 °C to +175 °C rating maintain regulation stability without thermal runaway - enabling single-point calibration over full 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 |
|---|---|---|---|
| 1N4120US-1 | Same electrical specs but in surface-mount DO-213AA package; no axial leads | Requires rework of through-hole layout; suited for space-constrained PCBs with automated assembly | Select when board real estate is limited and reflow compatibility is required |
| JANTXV1N4120D-1 | Identical Zener parameters and 1% tolerance, but qualified only to JANTXV (not JANS); lower screening rigor | Approved for airborne but not spaceflight; unsuitable for Class S radiation environments | Select for cost-sensitive airborne platforms where full JANS testing is unnecessary |
Compared with JAN1N4120D-1, the 1N4120US-1 offers identical regulation performance in a surface-mount form factor - eliminating through-hole assembly but requiring PCB redesign; the JANTXV1N4120D-1 provides matching electrical behavior at lower qualification cost, yet lacks JANS-level radiation assurance and thermal cycling validation.
Availability
JAN1N4120D-1 is available at Aetrix Electronics and suitable for aerospace power references, defense system bias networks, and nuclear instrumentation supplies requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for JAN1N4120D-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 aerospace-grade components.
The JAN1N4120D-1 belongs to Microsemi's legacy MIL-PRF-19500/435-qualified Zener diode family, designed specifically for voltage regulation in mission-critical analog subsystems where parametric stability under extreme environmental stress is mandatory.
FAQ
What is the Zener voltage tolerance of JAN1N4120D-1?
JAN1N4120D-1 has a nominal Zener voltage of 30.0 V with ±1% tolerance, as indicated by the "D" suffix in its nomenclature per Microsemi's part numbering system. This tight tolerance is verified at 250 mA test current and enables high-accuracy voltage references without post-production calibration.
Is JAN1N4120D-1 qualified for space applications?
Yes, JAN1N4120D-1 is qualified to JANS level per MIL-PRF-19500/435, making it suitable for spaceflight applications. It undergoes full lot acceptance testing including radiation hardness assurance (RHA), thermal cycling, and burn-in - all documented in Microsemi's QML listing for Class S devices.
What is the maximum junction temperature for JAN1N4120D-1?
The maximum junction temperature for JAN1N4120D-1 is +175 °C, with a minimum of -65 °C. This extended range is validated per MIL-PRF-19500/435 and supports operation in high-temperature environments such as engine-mounted avionics or downhole drilling electronics.
Does JAN1N4120D-1 require external ESD protection?
No, JAN1N4120D-1 is non-sensitive to ESD per MIL-STD-750 Method 1020 and does not require external protection circuitry. Its metallurgically bonded structure and hermetic glass package provide intrinsic immunity to electrostatic discharge events common in handling and assembly.
What is the noise density specification for JAN1N4120D-1?
JAN1N4120D-1 has a maximum noise density of 1 µV/√Hz at 250 mA Zener test current, measured in the 1 kHz–3 kHz band. This ultra-low noise performance makes it suitable for precision analog references where signal integrity must be preserved in sensitive measurement front-ends.
JAN1N4120D-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:
- -
- 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 FAQ
1.How can I place an order for JAN1N4120D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4120D-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 JAN1N4120D-1 reliable?
The price and inventory of JAN1N4120D-1 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 is usually 5 days.
3.What payment methods are accepted for JAN1N4120D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4120D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4120D-1?
JAN1N4120D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4120D-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 JAN1N4120D-1?
For technical support, including JAN1N4120D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4120D-1 requirements.
6.How does Aetrix verify that JAN1N4120D-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4120D-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 JAN1N4120D-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4120D-1?
All JAN1N4120D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4120D-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 JAN1N4120D-1 part is unused and in its original packaging.
Return procedure for JAN1N4120D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4120D-1 Tags
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