My Inquiry
My Account
Microchip Technology JANTX1N4112D-1/TR
- Part No.:
- JANTX1N4112D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4112D-1/TR.pdf
- Description:
- DIODE ZENER 18V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,819
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JANTX1N4112D-1/TR from Microsemi is a 18.0 V, 1% tolerance, 500 mW axial-leaded Zener diode in DO-35 (DO-204AH) glass package, qualified to JANTX level per MIL-PRF-19500/435 for high-reliability voltage regulation in military and aerospace power conditioning circuits.
For engineers reviewing the JANTX1N4112D-1/TR datasheet, JANTX1N4112D-1/TR pinout, JANTX1N4112D-1/TR application, or JANTX1N4112D-1/TR equivalent, key selection criteria include Zener voltage tolerance (±1%), dynamic impedance (100 Ω @ 250 mA), noise density (1 µV/√Hz), temperature coefficient (+0.090 %/°C), and hermetic DO-35 packaging for stable operation across -65°C to +175°C.
Technical Context
This device operates as a precision shunt voltage regulator with metallurgically bonded construction ensuring low leakage and stable breakdown characteristics. It delivers regulated 18.0 V output at IZT = 250 mA with ZZT = 100 Ω and exhibits minimal capacitance (<2 pF typical) and ultra-low noise density (1 µV/√Hz).
Its JANTX qualification confirms compliance with MIL-PRF-19500/435 screening including thermal cycling, hermeticity, and radiation hardness per MicroNote 050. The cathode band polarity and tin-lead plating support solderability per MIL-STD-750 method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 18.0 V ±1% at 250 mA - ensures tight regulation for reference-sensitive analog subsystems |
| Power Dissipation | 500 mW at 25°C, derated linearly to zero at 175°C - supports sustained operation in conduction-cooled avionics enclosures |
| Dynamic Impedance ZZT | 100 Ω @ 250 mA - maintains voltage stability under load transients up to 100 mA step change |
| Noise Density ND | 1 µV/√Hz @ 25°C - enables use in low-noise voltage references for precision ADC biasing |
| Temp Coefficient αVZ | +0.090 %/°C - predictable drift behavior over -65°C to +175°C for compensated designs |
| Reverse Leakage IR | ≤0.05 µA @ 14.4 V - minimizes quiescent current in battery-backed monitoring circuits |
| Junction Temp Range | -65°C to +175°C - validated for extended-temperature deployment in engine control units |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with 0.2 g mass, 1.0–1.5 inch lead length, and cathode indicated by colored band. Tin-lead plating meets MIL-STD-750 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system common; establishes return path for Zener current |
| Cathode | Regulated output node | Banded end supplies stable 18.0 V; must be held positive relative to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for mission-critical systems requiring 100% lot testing and extended environmental stress screening |
| 1% Zener voltage tolerance | Reduces need for post-regulation trimming in precision analog signal chains and sensor excitation circuits |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock, enabling survival in reflow-soldered hybrid modules |
| Ultra-low noise density (1 µV/√Hz) | Supports direct use in low-phase-noise oscillator bias networks and PLL reference buffers without external filtering |
| Hermetic DO-35 glass package | Prevents moisture ingress and parametric shift in high-humidity environments such as airborne radar cooling bays |
Applications
| Avionics Power Reference | Satellite Bus Voltage Monitor |
|---|---|
Use Scenario: Providing stable 18.0 V reference for analog-to-digital converters in flight control computer power supply telemetry. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precision DC reference for ADC input scaling and DAC feedback loops. Use Value: ±1% tolerance and +0.090 %/°C TC enable <±0.5% total error over -55°C to +125°C operating range without calibration. | Use Scenario: Monitoring primary bus voltage in LEO satellite power management units using discrete comparator threshold detection. IC Role / Device Role / Timing Role: Zener-clamped reference node for window comparators detecting undervoltage/overvoltage faults on 28 V bus. Use Value: Hermetic DO-35 package and JANTX qualification ensure long-term parametric stability in vacuum and radiation environments. |
| Tactical Radio RF Bias Supply | Missile Seeker Signal Conditioning |
Use Scenario: Generating clean 18.0 V bias for GaAs FET driver stages in man-portable HF/VHF transceivers. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying gate bias to RF power amplifiers with minimal phase perturbation. Use Value: 1 µV/√Hz noise density prevents AM-to-PM conversion in sensitive receiver front-ends operating below -110 dBm. | Use Scenario: Stabilizing reference voltage for infrared detector biasing and analog front-end gain control in guided munition seekers. IC Role / Device Role / Timing Role: Precision voltage clamp regulating detector bias rail against wide-temperature swings during launch acceleration and atmospheric re-entry. Use Value: -65°C to +175°C junction rating and metallurgical bond construction withstand 20,000 g shock and rapid thermal transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4112US-1 | Same 18.0 V, 1% spec but in surface-mount DO-213AA package; no axial leads | Used where board space is constrained and wave soldering is not required | Select when automated SMT assembly is preferred and thermal coupling to PCB copper is acceptable |
| JANTXV1N4112D-1 | Identical electrical specs but qualified to higher JANTXV level with additional burn-in and radiation testing | Required for space-grade applications where single-event latchup immunity is mandated | Select when mission assurance requires enhanced screening beyond JANTX, such as for orbital payload electronics |
Compared with JANTX1N4112D-1/TR, the 1N4112US-1 offers footprint reduction at the cost of manual rework accessibility, while JANTXV1N4112D-1 adds radiation hardness verification without altering regulation performance-enabling trade-offs between cost, assembly method, and mission-critical assurance.
Availability
JANTX1N4112D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite bus voltage monitor, and missile seeker signal conditioning requiring stable component supply across extended temperature ranges and high-reliability screening.
Supply support for JANTX1N4112D-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 RF solutions for aerospace, defense, and industrial markets.
The JANTX1N4112D-1/TR belongs to Microsemi's legacy 500 mW metallurgically bonded Zener diode family, designed specifically for military-grade voltage regulation where hermeticity, radiation tolerance, and parametric stability across extreme temperatures are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4112D-1/TR?
JANTX1N4112D-1/TR has a nominal Zener voltage of 18.0 V with a ±1% tolerance, as indicated by the "D" suffix in its nomenclature. This tight tolerance is verified per MIL-PRF-19500/435 screening and ensures consistent regulation performance across production lots used in precision analog circuits.
Is JANTX1N4112D-1/TR RoHS compliant?
No, JANTX1N4112D-1/TR is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions; JANTX-level devices retain tin-lead plating per MIL-STD-750 for proven solderability and reliability in high-reliability applications.
What does the "TR" suffix mean in JANTX1N4112D-1/TR?
"TR" indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. JANTX1N4112D-1/TR is supplied in reels for high-volume manufacturing, with standard quantities defined by Microsemi's factory specifications.
What is the maximum Zener current IZM for JANTX1N4112D-1/TR?
The maximum Zener current IZM for JANTX1N4112D-1/TR is 40 mA, derived from its 500 mW power rating and 18.0 V Zener voltage (IZM = PM(AV)/VZ ≈ 27.8 mA), with margin applied per derating curves in Figure 2 of T4-LDS-0245-2.
How is polarity marked on JANTX1N4112D-1/TR?
JANTX1N4112D-1/TR uses a cathode band marking on the glass body to indicate polarity. During Zener regulation, the banded end (cathode) must be held positive relative to the unmarked end (anode); reverse connection will forward-bias the diode at ~1.1 V.
JANTX1N4112D-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):
- 18 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 13.7 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)
JANTX1N4112D-1/TR FAQ
1.How can I place an order for JANTX1N4112D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4112D-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 JANTX1N4112D-1/TR reliable?
The price and inventory of JANTX1N4112D-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 JANTX1N4112D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4112D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4112D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4112D-1/TR?
JANTX1N4112D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4112D-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 JANTX1N4112D-1/TR?
For technical support, including JANTX1N4112D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4112D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4112D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4112D-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 JANTX1N4112D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4112D-1/TR?
All JANTX1N4112D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4112D-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 JANTX1N4112D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4112D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4112D-1/TR 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…
