My Inquiry
My Account
Microchip Technology JANS1N4618-1/TR
- Part No.:
- JANS1N4618-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4618-1/TR.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,826
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JANS1N4618-1/TR from Microsemi is a 500 mW, 2.7 V Zener voltage regulator diode in DO-35 glass axial-leaded package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers 2.7 V regulation at 250 mA test current, with 1% Zener tolerance (D suffix), 1500 Ω dynamic impedance, and 0.5 µA max reverse leakage at 2.0 V.
For engineers reviewing the JANS1N4618-1/TR datasheet, JANS1N4618-1/TR pinout, JANS1N4618-1/TR application, or JANS1N4618-1/TR equivalent, key selection criteria include its JANS-level radiation hardness, metallurgically bonded construction, low-noise performance (1 µV/√Hz), and stable regulation across -65°C to +175°C junction temperature range.
Technical Context
This device operates as a precision shunt voltage reference in feedback loops and overvoltage protection circuits. Its metallurgical bond ensures mechanical robustness under thermal cycling and shock, while its hermetically sealed DO-35 glass package maintains long-term parameter stability in harsh environments.
The JANS1N4618-1/TR exhibits a negative temperature coefficient of -0.075 %/°C and is rated for 0.5 W average power dissipation, derating linearly to zero at 175 °C. Its low capacitance (<1.5 pF typical) and ESD insensitivity per MIL-STD-750 method 1020 support use in sensitive analog and RF biasing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.7 V at 250 mA - precise reference point for low-voltage regulation and clamping |
| Zener Tolerance | ±1% - tight tolerance enables accurate voltage setting without trimming |
| Power Dissipation | 500 mW - supports stable operation in compact, unheatsinked designs |
| Dynamic Impedance ZZT | 1500 Ω - low impedance ensures minimal output voltage shift under load variation |
| Reverse Leakage IR | 0.5 µA @ 2.0 V - ultra-low leakage preserves accuracy in high-impedance bias networks |
| Noise Density | 1 µV/√Hz - exceptionally low noise suitable for precision reference and sensor excitation |
| Temp Coefficient αVZ | -0.075 %/°C - predictable, stable drift behavior for compensated designs |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Hermetically sealed, tin-lead plated leads solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential point in shunt configuration |
| Cathode | Zener regulation node | Connected to regulated voltage rail; banded end must be held at higher potential than anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Meets full screening and testing requirements for space-grade reliability and radiation hardness |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal stress and vibration |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter drift over decades in mission-critical systems |
| Low noise density (1 µV/√Hz) | Enables use in low-noise analog references without external filtering |
| ESD immunity (MIL-STD-750 method 1020) | Withstands handling and assembly without parameter degradation or failure |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Regulating reference voltage for ADCs monitoring 3.3 V aircraft bus voltage. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 2.7 V input to precision ADC driver stage. Use Value: ±1% tolerance and -0.075 %/°C TC ensure <±0.5% total error across -55°C to +125°C operating range. | Use Scenario: Biasing photodiode amplifier in radiation-hardened star tracker. IC Role / Device Role / Timing Role: Low-noise Zener reference supplying clean bias to op-amp input stage. Use Value: 1 µV/√Hz noise density prevents signal-to-noise degradation in sub-picoamp photocurrent measurement. |
| Nuclear Instrumentation | Tactical Radio RF Stage Bias |
Use Scenario: Setting threshold voltage for gamma pulse discrimination circuitry. IC Role / Device Role / Timing Role: Precision clamp regulating comparator reference against high-dose gamma exposure. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in 100 krad(Si) environments. | Use Scenario: Providing stable gate bias to GaAs FET in L-band transmit amplifier. IC Role / Device Role / Timing Role: Low-capacitance (≤1.5 pF) shunt reference minimizing RF loading on bias network. Use Value: Minimal parasitic capacitance avoids resonance shifts and gain instability above 1 GHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4618-1 | Same electrical specs; qualified to JANTXV level (lower screening rigor than JANS) | Approved for high-reliability ground-based military systems but not spaceflight | Select when full JANS screening is unnecessary and cost sensitivity is higher |
| 1N4618US-1 | Same VZ, IZT, ZZT; surface-mount DO-213AA package instead of axial DO-35 | Requires PCB rework for SMT assembly; no lead-forming or through-hole mounting | Select when automated assembly and board space constraints favor SMT over axial leads |
Compared with JANS1N4618-1/TR, JANTXV1N4618-1 offers identical regulation performance with reduced qualification scope, while 1N4618US-1 provides identical electrical behavior in a surface-mount form factor-neither is pin-compatible due to differing package geometries and terminal configurations.
Availability
JANS1N4618-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, and nuclear instrumentation requiring stable component supply with guaranteed traceability and long-term obsolescence management.
Supply support for JANS1N4618-1/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, radiation-hardened, and aerospace-grade components.
The JANS1N4618-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 Zener diode family, engineered specifically for mission-critical analog reference and protection functions in extreme-environment electronics.
FAQ
What is the Zener voltage and test current for JANS1N4618-1/TR?
JANS1N4618-1/TR has a nominal Zener voltage of 2.7 V measured at a test current (IZT) of 250 mA. This value is specified under thermal equilibrium at 25 °C ambient and reflects the device's regulation point in standard shunt reference configurations. The JANS1N4618-1/TR maintains this voltage with ±1% tolerance across its qualified operating conditions.
Is JANS1N4618-1/TR radiation hardened?
Yes, JANS1N4618-1/TR is inherently radiation hard per Microsemi MicroNote 050 and qualified to JANS level per MIL-PRF-19500/435. Its metallurgically bonded structure and hermetic DO-35 package provide proven resilience to total ionizing dose (TID) up to 100 krad(Si), making it suitable for space and nuclear environments where JANS1N4618-1/TR is deployed.
What is the maximum power dissipation and derating behavior of JANS1N4618-1/TR?
JANS1N4618-1/TR is rated for 500 mW average power dissipation at 25 °C lead temperature, linearly derating to zero at 175 °C. Derating begins at 50 °C for lead temperature or 25 °C for ambient on a typical FR4 board. This behavior ensures safe operation in high-temperature avionics enclosures where JANS1N4618-1/TR serves as a primary voltage reference.
Does JANS1N4618-1/TR have low noise characteristics?
Yes, JANS1N4618-1/TR delivers 1 µV/√Hz noise density at its 2.7 V Zener voltage - among the lowest in its voltage class. This performance is confirmed in Figure 1 of the T4-LDS-0245-2 datasheet and makes JANS1N4618-1/TR ideal for precision analog circuits where noise directly impacts measurement fidelity.
What packaging and marking does JANS1N4618-1/TR use?
JANS1N4618-1/TR uses a hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode indicated by a band. It is marked with the full part number and supplied in tape-and-reel format (TR suffix). The "JANS" prefix confirms full JANS-level qualification, and the "-1" denotes metallurgically bonded construction - all verified features of JANS1N4618-1/TR.
JANS1N4618-1/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):
- 1.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4618-1/TR FAQ
1.How can I place an order for JANS1N4618-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4618-1/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 JANS1N4618-1/TR reliable?
The price and inventory of JANS1N4618-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4618-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4618-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4618-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4618-1/TR?
JANS1N4618-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4618-1/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 JANS1N4618-1/TR?
For technical support, including JANS1N4618-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4618-1/TR requirements.
6.How does Aetrix verify that JANS1N4618-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4618-1/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 JANS1N4618-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4618-1/TR?
All JANS1N4618-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4618-1/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 JANS1N4618-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4618-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4618-1/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…
