My Inquiry
My Account
Microchip Technology JANTX1N4118D-1/TR
- Part No.:
- JANTX1N4118D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4118D-1/TR.pdf
- Description:
- DIODE ZENER 27V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,013
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JANTX1N4118D-1/TR from Microsemi is a 27.0 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JANTX level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4118D-1/TR datasheet, JANTX1N4118D-1/TR pinout, JANTX1N4118D-1/TR application, or JANTX1N4118D-1/TR equivalent, key selection criteria include Zener voltage tolerance (±1%), dynamic impedance (150 Ω @ 250 mA), noise density (1 µV/√Hz), temperature coefficient (+0.090 %/°C), and military qualification level.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 27.0 V at 250 mA test current (IZT), exhibiting low dynamic impedance (150 Ω) and minimal noise density (1 µV/√Hz). Its metallurgical bond construction ensures stable breakdown characteristics across temperature extremes.
The JANTX1N4118D-1/TR is rated for junction temperatures from –65 °C to +175 °C, with thermal resistance junction-to-lead of 250 °C/W at 10 mm lead length, enabling reliable operation in conduction-cooled military chassis environments without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27.0 V ±1% at 250 mA - enables precise reference generation for analog monitoring circuits requiring tight regulation tolerance. |
| Power Dissipation | 500 mW at 25 °C - supports stable DC biasing in low-power analog subsystems without external heatsinking. |
| Dynamic Impedance (ZZT) | 150 Ω @ IZT - ensures minimal output voltage variation under load transients in feedback loops. |
| Noise Density (ND) | 1 µV/√Hz - critical for low-noise voltage references in precision instrumentation and ADC reference buffers. |
| Temp. Coefficient (αVZ) | +0.090 %/°C - provides predictable, monotonic drift over –65 to +175 °C for mission-critical thermal compensation. |
| Reverse Leakage (IR) | ≤0.01 µA @ 20.5 V - guarantees negligible standby current in high-impedance sensing nodes. |
| Max Zener Current (IZM) | 40 mA - defines absolute safe operating limit before thermal runaway under sustained overload. |
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 | Reference ground node | Connected to system ground or common return; establishes reference potential for Zener regulation. |
| Cathode | Zener output terminal | Banded end; supplies regulated 27.0 V when reverse-biased; must be held positive relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace avionics and missile guidance systems requiring extended lifetime under shock/vibration. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term parameter stability in space-grade applications. |
| 1% Zener voltage tolerance | Reduces calibration overhead in precision voltage monitors where ±5% commercial parts would require trimming. |
| Hermetic glass sealing | Prevents moisture ingress and parametric shift in humid or salt-laden environments such as naval electronics enclosures. |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for low-earth orbit satellite power conditioning. |
Applications
| Avionics Power Monitoring | Missile Guidance Reference |
|---|---|
Use Scenario: Real-time detection of 28 VDC bus undervoltage/overvoltage in flight control computers. IC Role / Device Role / Timing Role: Shunt reference element in comparator-based fault-detection circuitry. Use Value: ±1% tolerance ensures trip thresholds remain within MIL-STD-704E limits without recalibration across temperature. | Use Scenario: Stable voltage reference for inertial measurement unit (IMU) analog front-end amplifiers. IC Role / Device Role / Timing Role: Precision DC bias source for op-amp gain-setting networks. Use Value: 1 µV/√Hz noise density prevents degradation of gyro signal-to-noise ratio during high-dynamic maneuvers. |
| Satellite Power Conditioning | Nuclear Command & Control |
Use Scenario: Regulation of auxiliary 27 V rail feeding radiation-hardened FPGAs in LEO satellites. IC Role / Device Role / Timing Role: Primary shunt regulator in unregulated DC-DC converter feedback path. Use Value: Inherent radiation hardness eliminates need for shielding or derating, reducing SWaP-C. | Use Scenario: Critical voltage reference in hardened command decoder logic powering nuclear launch sequencers. IC Role / Device Role / Timing Role: Fail-safe Zener clamp protecting CMOS input stages from ESD and transient overvoltage. Use Value: JANTX qualification and –65 to +175 °C operation ensure functionality after electromagnetic pulse (EMP) exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4118US-1 | Same 27.0 V, 1% spec but in DO-213AA surface-mount package; no axial leads. | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy chassis wiring. | Select when board space is constrained and automated placement is available. |
| JANS1N4118D-1 | Identical electrical specs but qualified to JANS (highest reliability level); higher screening cost and longer lead time. | Required only for manned spacecraft or strategic weapon systems where zero defect probability is mandated. | Select only if JANS-level traceability and extended burn-in are contractually required. |
Compared with JANTX1N4118D-1/TR, the 1N4118US-1 offers identical regulation performance in a space-saving SMT form factor, while JANS1N4118D-1 adds full radiation and lot-level screening for ultra-high-assurance missions-neither is pin-compatible due to differing packages.
Availability
JANTX1N4118D-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, missile guidance reference, and satellite power conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for JANTX1N4118D-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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The JANTX1N4118D-1/TR belongs to Microsemi's MIL-qualified Zener diode family engineered specifically for precision voltage regulation in mission-critical systems where parameter stability, radiation tolerance, and long-term reliability outweigh cost sensitivity.
FAQ
What is the Zener voltage tolerance of JANTX1N4118D-1/TR?
JANTX1N4118D-1/TR has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its nomenclature. This is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1, where JANTX1N4118D-1/TR corresponds to the 1N4118-1 row with D = 1% tolerance. The device delivers 27.0 V ±0.27 V at 250 mA test current under standard conditions.
Is JANTX1N4118D-1/TR RoHS compliant?
No, JANTX1N4118D-1/TR is not RoHS compliant. Per the nomenclature guide on page 2 of T4-LDS-0245-2 Rev. 1, the "e3" suffix indicates RoHS compliance, and it is explicitly stated that RoHS versions are available only for commercial-grade parts-not for JAN, JANTX, JANTXV, or JANS levels. JANTX1N4118D-1/TR carries no e3 suffix and uses tin-lead plating per MIL-STD-750.
What is the maximum Zener current rating for JANTX1N4118D-1/TR?
The maximum Zener current (IZM) for JANTX1N4118D-1/TR is 40 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value represents the absolute maximum continuous dc current the device can sustain without exceeding its 500 mW power limit at 25 °C ambient, assuming proper thermal management via lead conduction.
Does JANTX1N4118D-1/TR have radiation hardness certification?
Yes, JANTX1N4118D-1/TR is inherently radiation hard, as documented in Microsemi MicroNote 050 referenced in the Applications/Benefits section of T4-LDS-0245-2 Rev. 1. This characteristic stems from its metallurgically bonded glass construction and is applicable across the entire 1N4099–1N4135 family, including JANTX1N4118D-1/TR, making it suitable for low-earth orbit satellite applications.
What does the "TR" suffix mean in JANTX1N4118D-1/TR?
The "TR" suffix in JANTX1N4118D-1/TR indicates tape-and-reel packaging per EIA-296 standard, as stated in the Mechanical and Packaging section on page 2 of T4-LDS-0245-2 Rev. 1. This format supports automated pick-and-place assembly and is distinct from bulk or ammo-pack options; quantity requirements must be confirmed with the factory.
JANTX1N4118D-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):
- 27 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 20.5 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)
JANTX1N4118D-1/TR FAQ
1.How can I place an order for JANTX1N4118D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4118D-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 JANTX1N4118D-1/TR reliable?
The price and inventory of JANTX1N4118D-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 JANTX1N4118D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4118D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4118D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4118D-1/TR?
JANTX1N4118D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4118D-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 JANTX1N4118D-1/TR?
For technical support, including JANTX1N4118D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4118D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4118D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4118D-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 JANTX1N4118D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4118D-1/TR?
All JANTX1N4118D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4118D-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 JANTX1N4118D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4118D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4118D-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…
