My Inquiry
My Account
Microchip Technology JAN1N4120C-1
- Part No.:
- JAN1N4120C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4120C-1.pdf
- Description:
- DIODE ZENER 30V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,361
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JAN1N4120C-1 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 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4120C-1 datasheet, JAN1N4120C-1 pinout, JAN1N4120C-1 application, or JAN1N4120C-1 equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification status - critical for precision biasing, reference, and overvoltage protection in harsh-environment designs.
Technical Context
This device operates as a reverse-biased voltage regulator with a nominal Zener voltage of 30.0 V at 250 mA test current (IZT), exhibiting +0.095 %/°C temperature coefficient and 200 Ω dynamic impedance (ZZT) at IZT. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and radiation exposure.
Designed for operation across –65 °C to +175 °C junction temperature range, it delivers 40 µA maximum reverse leakage (IR) at VR = 22.8 V and maintains low noise density (1 µV/√Hz typical below 6.8 V, scaling with voltage), making it suitable for low-noise analog references where stability outweighs ultra-low capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 30.0 V ±2% at 250 mA - precise regulation point for mid-range DC reference and clamp circuits |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - supports continuous operation in conduction-cooled military chassis |
| Dynamic Impedance ZZT | 200 Ω at 250 mA - limits output voltage variation under load current shifts up to ±10 mA |
| Temp Coefficient αVZ | +0.095 %/°C - predictable positive drift enables compensation in multi-diode reference strings |
| Noise Density ND | 1 µV/√Hz (typical) - minimal broadband noise for precision analog sensing and instrumentation front-ends |
| Reverse Leakage IR | 40 µA max at 22.8 V - ensures low standby power loss in high-impedance bias networks |
| Junction Temp Range | –65 °C to +175 °C - validated for extended-temperature avionics, downhole, and space-grade electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by band; leads are tin-lead plated and solderable per MIL-STD-750 method 2026. Weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse voltage applied between cathode and anode to enable regulation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; supplies regulated 30 V output when reverse-biased above breakdown; must be held at higher potential than anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for mission-critical systems requiring screening to Level H (JAN) per military specification |
| Metallurgical bond construction | Eliminates interfacial delamination risk during thermal shock and long-term high-temperature operation |
| 2% Zener voltage tolerance (C suffix) | Reduces calibration overhead in precision voltage references versus standard 5% variants |
| Low noise density (1 µV/√Hz) | Enables use in low-drift analog signal chains without external filtering or post-regulation buffering |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter shift in high-humidity or vacuum environments |
Applications
| Aerospace Power Conditioning | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary 30 V rail in satellite power distribution units exposed to thermal cycling and radiation. IC Role / Device Role / Timing Role: Zener diode providing stable voltage reference for DC-DC converter feedback and overvoltage protection circuitry. Use Value: JAN-level qualification and –65 °C to +175 °C operation ensure uninterrupted regulation across orbital temperature extremes. | Use Scenario: Biasing precision op-amps and ADC drivers in radar receiver front-ends operating in mobile military platforms. IC Role / Device Role / Timing Role: Low-noise 30 V reference source replacing bulkier IC-based references where size and radiation hardness are critical. Use Value: 1 µV/√Hz noise density and inherent radiation hardness (per MicroNote 050) preserve SNR in sensitive RF signal paths. |
| Industrial Control Safety Logic | Downhole Instrumentation |
Use Scenario: Providing fail-safe voltage threshold detection in SIL-2-rated emergency shutdown controllers for oil & gas plants. IC Role / Device Role / Timing Role: Zener clamp element in redundant overvoltage monitor circuits that trigger hardware trip signals. Use Value: 2% tolerance and MIL-qualified consistency reduce false-trip probability versus commercial-grade diodes. | Use Scenario: Stabilizing sensor excitation voltage in borehole pressure/temperature gauges deployed at >150 °C ambient. IC Role / Device Role / Timing Role: High-temperature-stable Zener reference enabling accurate analog-to-digital conversion under extreme thermal stress. Use Value: +0.095 %/°C tempco and validated 175 °C junction rating allow direct mounting on hot-surface PCBs without derating penalties. |
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 Zener voltage and JAN qualification, but in surface-mount DO-213AA package | Requires rework of through-hole layout; suited for space-constrained, automated assembly | Select when board real estate or reflow compatibility outweighs axial-lead serviceability |
| JANTXV1N4120C-1 | Identical electrical specs and 2% tolerance, but qualified to JANTXV level (enhanced screening, tighter parametric limits) | Required for flight-critical subsystems where burn-in and lot traceability exceed JAN requirements | Select when program mandates JANTXV-level reliability documentation and screening depth |
Compared with JAN1N4120C-1, the 1N4120US-1 offers identical regulation performance in a compact SMT form factor, while JANTXV1N4120C-1 provides deeper process control and extended test coverage - both serve distinct mechanical and assurance-tier requirements without altering core circuit functionality.
Availability
JAN1N4120C-1 is available at Aetrix Electronics and suitable for aerospace power conditioning, defense system reference, and industrial control safety logic requiring stable component supply across extended temperature and radiation-exposed environments.
Supply support for JAN1N4120C-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 analog and mixed-signal components.
The JAN1N4120C-1 belongs to Microsemi's legacy 1N4099–1N4135 family of mil-qualified Zener diodes, designed specifically for voltage regulation in mission-critical defense, space, and nuclear instrumentation systems where long-term parametric stability and environmental survivability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JAN1N4120C-1?
JAN1N4120C-1 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This is confirmed in the nomenclature table of Microsemi T4-LDS-0245-2 Rev. 1, where "C = 2%" is explicitly defined. The nominal Zener voltage is 30.0 V at 250 mA test current (IZT), measured at 25 °C with the diode in thermal equilibrium.
Is JAN1N4120C-1 RoHS compliant?
No, JAN1N4120C-1 is not RoHS compliant. Per Microsemi T4-LDS-0245-2 Rev. 1, RoHS compliance (e3 suffix) is available only on commercial-grade versions of this series. The "JAN" prefix indicates military qualification level, and the absence of "e3" in the full part number confirms non-RoHS lead-tin plating per MIL-STD-750.
What is the maximum reverse leakage current for JAN1N4120C-1?
The maximum reverse leakage current (IR) for JAN1N4120C-1 is 40 µA at VR = 22.8 V, as specified in the Electrical Characteristics table on page 3 of Microsemi T4-LDS-0245-2 Rev. 1. This value applies at 25 °C and reflects worst-case leakage under rated reverse voltage conditions prior to full Zener conduction.
What package type does JAN1N4120C-1 use?
JAN1N4120C-1 uses the DO-35 (also designated DO-204AH) axial-leaded, hermetically sealed glass package. Mechanical dimensions and construction details are provided on page 5 of Microsemi T4-LDS-0245-2 Rev. 1, confirming body diameter (BD) 0.056–0.090 inches and overall length (LL) 1.000–1.500 inches.
Does JAN1N4120C-1 have radiation hardness certification?
Yes, JAN1N4120C-1 is inherently radiation hard, as documented in Microsemi MicroNote 050 referenced in the Applications/Benefits section of T4-LDS-0245-2 Rev. 1. Its metallurgically bonded glass construction and MIL-PRF-19500/435 qualification support operation in total ionizing dose (TID) environments typical of low-earth orbit and nuclear instrumentation applications.
JAN1N4120C-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:
- ±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 FAQ
1.How can I place an order for JAN1N4120C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4120C-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 JAN1N4120C-1 reliable?
The price and inventory of JAN1N4120C-1 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 is usually 5 days.
3.What payment methods are accepted for JAN1N4120C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4120C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4120C-1?
JAN1N4120C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4120C-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 JAN1N4120C-1?
For technical support, including JAN1N4120C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4120C-1 requirements.
6.How does Aetrix verify that JAN1N4120C-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4120C-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 JAN1N4120C-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4120C-1?
All JAN1N4120C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4120C-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 JAN1N4120C-1 part is unused and in its original packaging.
Return procedure for JAN1N4120C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4120C-1 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
