My Inquiry
My Account
Microchip Technology JANTX1N4618-1/TR
- Part No.:
- JANTX1N4618-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4618-1/TR.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,346
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JANTX1N4618-1/TR from Microsemi is a 2.7 V, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANTX level per MIL-PRF-19500/435, with 5% voltage tolerance, 1500 Ω dynamic impedance at 250 mA test current, and 0.5 µA reverse leakage at 2.0 V. It serves as a precision voltage reference in military-grade power regulation and analog signal conditioning circuits.
For engineers reviewing the JANTX1N4618-1/TR datasheet, JANTX1N4618-1/TR pinout, JANTX1N4618-1/TR application, or JANTX1N4618-1/TR equivalent, key selection criteria include Zener voltage stability over temperature (αVZ = −0.075 %/°C), low noise density (1 µV/√Hz), hermetic DO-35 packaging, and MIL-qualified reliability for aerospace and defense systems.
Technical Context
This device operates in reverse breakdown to maintain stable 2.7 V regulation across 250 mA test current and up to 90 mA maximum Zener current. Its metallurgical bond construction ensures low thermal resistance (RθJL = 250 °C/W) and radiation hardness per MicroNote 050.
The diode exhibits minimal capacitance (typical <1.5 pF), low forward voltage (1.1 V @ 200 mA), and is non-sensitive to ESD per MIL-STD-750 Method 1020 - enabling use in high-reliability analog front-ends where noise, leakage, and environmental robustness are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.7 V @ 250 mA - defines precise regulation point for low-voltage reference design |
| Power Dissipation | 500 mW @ TL = 25 °C - supports continuous operation in compact axial-leaded layouts |
| Zener Impedance ZZT | 1500 Ω @ 250 mA - indicates moderate AC impedance affecting regulation accuracy under dynamic load |
| Reverse Leakage IR | 0.5 µA @ 2.0 V - ensures minimal standby current in battery-backed or low-power bias networks |
| Noise Density | 1 µV/√Hz - enables use in low-noise analog references where spectral purity matters |
| Temp Coefficient αVZ | −0.075 %/°C - provides predictable, negative drift for compensation in wide-temperature designs |
| Package | DO-35 (DO-204AH) - hermetically sealed glass axial package rated for −65 to +175 °C operation |
Pinout & Package
Hermetically sealed DO-35 (DO-204AH) glass axial package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by band; banded end must be held positive for Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; forms low-impedance path for Zener current sink |
| Cathode | Regulated output node | Banded terminal; supplies stable 2.7 V when reverse-biased; requires series current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for defense/aerospace programs requiring high-reliability components |
| Metallurgical bond construction | Enables low thermal resistance (250 °C/W) and inherent radiation hardness per MicroNote 050 |
| Low noise density (1 µV/√Hz) | Supports precision analog references in instrumentation, ADC biasing, and sensor excitation circuits |
| Hermetic DO-35 glass package | Provides long-term stability and moisture immunity in harsh environments including space and avionics |
| Non-ESD-sensitive per MIL-STD-750 | Eliminates need for special handling during assembly in high-volume military production lines |
Applications
| Avionics Power Monitoring | Spacecraft Sensor Biasing |
|---|---|
Use Scenario: Regulating reference voltage for analog-to-digital converters monitoring aircraft bus voltage and engine parameters. IC Role / Device Role / Timing Role: Zener diode providing stable 2.7 V reference for precision ADC input scaling and offset calibration. Use Value: −0.075 %/°C tempco and 1 µV/√Hz noise ensure measurement accuracy across −55 to +125 °C operational range. | Use Scenario: Supplying bias voltage to radiation-tolerant MEMS accelerometers and temperature sensors aboard LEO satellites. IC Role / Device Role / Timing Role: Low-leakage (0.5 µA) Zener reference maintaining sensor excitation integrity during extended eclipse periods. Use Value: Hermetic DO-35 package and inherent radiation hardness eliminate parameter shift after 100 krad(Si) total ionizing dose exposure. |
| Military Radio RF Front-End | Tactical Data Link Voltage Clamping |
Use Scenario: Stabilizing local oscillator tuning voltage in S-band transceivers operating under extreme thermal cycling. IC Role / Device Role / Timing Role: Zener regulator establishing fixed DC bias point for varactor diodes in PLL-based synthesizers. Use Value: 1500 Ω dynamic impedance and 250 mA test current ensure stable tuning voltage despite RF-induced current ripple. | Use Scenario: Protecting RS-422 receiver inputs against transient overvoltage in battlefield vehicle data networks. IC Role / Device Role / Timing Role: Low-capacitance (≈1.5 pF) Zener clamp limiting differential input swing without distorting 10 Mbps signaling. Use Value: Minimal capacitance preserves signal edge rate while 2.7 V clamping threshold prevents CMOS input latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4618US-1 | Same electrical specs but in DO-213AA surface-mount package; no axial leads | Used where PCB real estate is constrained and reflow assembly is required | Select when transitioning from through-hole to SMT without changing circuit topology |
| JANTXV1N4618-1 | Identical electrical and mechanical specs but qualified to higher JANTXV reliability level per MIL-PRF-19500/435 | Required for mission-critical subsystems where burn-in and lot acceptance testing are mandated | Select when program specifications require enhanced screening beyond JANTX level |
Compared with JANTX1N4618-1/TR, the 1N4618US-1 offers identical regulation performance in a space-saving SMT form factor, while JANTXV1N4618-1 delivers stricter screening and extended lifetime testing - making the former ideal for size-constrained commercial derivatives and the latter essential for flight-critical avionics.
Availability
JANTX1N4618-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, spacecraft sensor biasing, and military radio RF front-end designs requiring stable component supply across extended product lifecycles.
Supply support for JANTX1N4618-1/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 and mixed-signal ICs, discrete devices, and timing solutions for aerospace, defense, and industrial markets.
The 1N4614–1N4627 series was designed specifically to meet MIL-PRF-19500/435 requirements for ruggedized, low-noise Zener regulation in mission-critical analog subsystems.
FAQ
What is the Zener voltage tolerance for JANTX1N4618-1/TR?
JANTX1N4618-1/TR has a nominal Zener voltage of 2.7 V with ±5% tolerance per JEDEC standard, meaning the actual regulation voltage falls between 2.565 V and 2.835 V at 250 mA test current and 25 °C ambient. This tolerance is inherent to the JAN/JANTX-level qualification and applies across the full operating temperature range of −65 to +175 °C.
Is JANTX1N4618-1/TR RoHS compliant?
No, JANTX1N4618-1/TR is not RoHS compliant. The "e3" suffix denotes RoHS compliance, which is only available on commercial-grade versions (e.g., 1N4618-1e3). JANTX-level parts retain tin-lead plating per MIL-STD-750 and are exempt from RoHS restrictions due to their military qualification and reliability requirements.
What is the maximum Zener current rating for JANTX1N4618-1/TR?
The maximum Zener current (IZM) for JANTX1N4618-1/TR is 90 mA. This value is derived from the 500 mW power rating and 2.7 V Zener voltage (P = V × I), with linear derating applied above 50 °C lead temperature - reaching zero dissipation at 175 °C per Figure 2 in the datasheet.
How does the temperature coefficient affect JANTX1N4618-1/TR's regulation accuracy?
JANTX1N4618-1/TR has a temperature coefficient αVZ of −0.075 %/°C, meaning its Zener voltage decreases by approximately 2.025 mV per °C rise from 25 °C. Over a −55 to +125 °C range, this results in a total drift of ±114 mV - a key factor in precision reference designs requiring external compensation or tight thermal management.
Can JANTX1N4618-1/TR be used in surface-mount assemblies?
No, JANTX1N4618-1/TR uses the axial-leaded DO-35 (DO-204AH) package and is not suitable for standard SMT reflow. For surface-mount equivalents, consider the 1N4618US-1 in DO-213AA package - which shares identical electrical characteristics but requires different board layout and assembly processes.
JANTX1N4618-1/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):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1500 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4618-1/TR FAQ
1.How can I place an order for JANTX1N4618-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4618-1/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 JANTX1N4618-1/TR reliable?
The price and inventory of JANTX1N4618-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4618-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4618-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4618-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4618-1/TR?
JANTX1N4618-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4618-1/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 JANTX1N4618-1/TR?
For technical support, including JANTX1N4618-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4618-1/TR requirements.
6.How does Aetrix verify that JANTX1N4618-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4618-1/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 JANTX1N4618-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4618-1/TR?
All JANTX1N4618-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4618-1/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 JANTX1N4618-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4618-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4618-1/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
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
