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Microchip Technology JANS1N4618D-1/TR
- Part No.:
- JANS1N4618D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4618D-1/TR.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,082
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Product details
Overview
JANS1N4618D-1/TR from Microsemi is a 2.7 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications, with dynamic impedance of 1500 Ω at 250 mA and max reverse leakage of 0.5 µA at rated voltage.
For engineers reviewing the JANS1N4618D-1/TR datasheet, JANS1N4618D-1/TR pinout, JANS1N4618D-1/TR application, or JANS1N4618D-1/TR equivalent, this page delivers verified Zener voltage, temperature coefficient, noise density, power derating behavior, and military qualification status - all critical for precision voltage reference design in radiation-hardened or extended-temperature environments.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures stable junction characteristics under thermal cycling and mechanical stress, supporting operation from –65 °C to +175 °C.
It exhibits a negative temperature coefficient of –0.075 %/°C and low noise density (1 µV/√Hz typical at 2.7 V), making it suitable for low-noise analog references where stability across temperature and minimal broadband noise are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.7 V ±1% at 250 mA - defines precise regulation point for biasing or reference circuits |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - sets maximum continuous thermal load on PCB layout |
| Dynamic Impedance ZZT | 1500 Ω at IZT = 250 mA - determines output voltage variation under load current changes |
| Reverse Leakage IR | ≤0.5 µA at rated voltage - ensures minimal parasitic current in high-impedance sensing nodes |
| Temp Coefficient αVZ | –0.075 %/°C - enables predictable drift compensation in wide-temperature designs |
| Noise Density ND | 1 µV/√Hz at 2.7 V - supports low-noise analog front-ends without added filtering |
| Junction Temp Range | –65 °C to +175 °C - qualifies for extreme-environment deployment without derating penalties |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package; cathode identified by single black band; leads tin-lead plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; establishes reference return path |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; supplies stable 2.7 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Meets full screening, lot traceability, and radiation hardness requirements for space-grade systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk during thermal shock or vibration, ensuring long-term parameter stability |
| 1% Zener voltage tolerance | Reduces need for post-production trimming in precision reference circuits |
| Low 1 µV/√Hz noise density | Enables direct use in sensitive instrumentation amplifiers without external noise filtering |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter shift over decades in sealed enclosures |
Applications
| Avionics Power Monitoring | Satellite Onboard Reference |
|---|---|
Use Scenario: Monitoring regulated bus voltage in flight control computers using discrete comparator-based fault detection. IC Role / Device Role / Timing Role: Precision 2.7 V reference for comparator threshold setting against 3.3 V supply rail. Use Value: Tight 1% tolerance and –0.075 %/°C TC ensure consistent trip points across –55 °C to +125 °C operational range. | Use Scenario: Providing stable bias voltage to radiation-tolerant op-amps in star tracker signal conditioning chains. IC Role / Device Role / Timing Role: Low-noise Zener reference source for transimpedance amplifier feedback networks. Use Value: 1 µV/√Hz noise density avoids degrading SNR in photon-counting analog stages. |
| Nuclear Instrumentation | Tactical Radio Biasing |
Use Scenario: Calibrating gamma spectrometer ADC reference inputs in reactor monitoring systems. IC Role / Device Role / Timing Role: Primary voltage standard for 12-bit SAR ADC internal reference divider network. Use Value: JANS-level qualification guarantees parametric stability after 100 krad(Si) total ionizing dose exposure. | Use Scenario: Generating local 2.7 V bias for RF front-end LNAs in manpack radios operating in desert environments. IC Role / Device Role / Timing Role: Temperature-stable DC bias generator compensating for GaAs FET VGS drift. Use Value: Hermetic DO-35 package prevents humidity-induced leakage increase at 95% RH, 70 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4618D-1 | Same electrical specs but qualified only to JANTXV level; no radiation hardness data published | Lacks documented TID performance; unsuitable for space missions requiring radiation assurance | Select when cost sensitivity outweighs need for full JANS screening and radiation test reports |
| 1N4618D-1/TR (commercial) | Identical Zener parameters and DO-35 package, but RoHS-compliant matte-tin plating and no MIL qualification | Not screened for reliability or environmental stress; limited to non-critical industrial prototypes | Choose for bench validation or non-mission-critical subsystems where MIL-PRF-19500 compliance is not mandated |
Compared with JANTXV1N4618D-1 and 1N4618D-1/TR, the JANS1N4618D-1/TR provides verified radiation hardness, full lot traceability, and extended temperature performance - essential for flight hardware where parameter drift or latent failure cannot be tolerated.
Availability
JANS1N4618D-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite onboard reference, nuclear instrumentation, and tactical radio biasing requiring stable component supply across extended temperature and radiation-exposed environments.
Supply support for JANS1N4618D-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 1N4614–1N4627 series was designed specifically to deliver precision Zener regulation in mission-critical defense and space systems where long-term stability, hermetic integrity, and MIL-qualified screening are mandatory.
FAQ
What is the Zener voltage tolerance of JANS1N4618D-1/TR?
JANS1N4618D-1/TR has a nominal Zener voltage of 2.7 V with a guaranteed tolerance of ±1%, as indicated by the "D" suffix in the part number per Microsemi's nomenclature. This tight tolerance is maintained across the full operating temperature range and qualifies the device for precision reference applications where post-calibration is impractical.
Is JANS1N4618D-1/TR radiation hardened?
Yes, JANS1N4618D-1/TR is inherently radiation hard per Microsemi MicroNote 050 and qualified to JANS level under MIL-PRF-19500/435, which includes total ionizing dose (TID) testing and lot acceptance screening for space-grade reliability. The metallurgical bond and hermetic DO-35 package contribute directly to its radiation tolerance.
What does the "TR" suffix mean in JANS1N4618D-1/TR?
The "TR" suffix indicates tape-and-reel packaging per EIA-296 standard, enabling automated placement in high-volume manufacturing. JANS1N4618D-1/TR retains full JANS qualification and electrical specifications; only the packaging format differs from the bulk or ammo-pack versions.
What is the maximum Zener test current IZT for JANS1N4618D-1/TR?
The maximum Zener test current IZT for JANS1N4618D-1/TR is 250 mA, as specified in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0245-2 datasheet. This current defines the operating point at which VZ, ZZT, and other key parameters are measured and guaranteed.
Can JANS1N4618D-1/TR be used in surface-mount designs?
No - JANS1N4618D-1/TR uses the axial-leaded DO-35 (DO-204AH) through-hole package. For surface-mount equivalents, Microsemi offers the 1N4618UR-1 in DO-213AA and 1PMT4618 in DO-216 packages, but those are commercial-grade and lack JANS qualification.
JANS1N4618D-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:
- ±1%
- 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)
JANS1N4618D-1/TR FAQ
1.How can I place an order for JANS1N4618D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4618D-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 JANS1N4618D-1/TR reliable?
The price and inventory of JANS1N4618D-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 JANS1N4618D-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4618D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4618D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4618D-1/TR?
JANS1N4618D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4618D-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 JANS1N4618D-1/TR?
For technical support, including JANS1N4618D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4618D-1/TR requirements.
6.How does Aetrix verify that JANS1N4618D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4618D-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 JANS1N4618D-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4618D-1/TR?
All JANS1N4618D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4618D-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 JANS1N4618D-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4618D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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