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Microchip Technology JAN1N4118C-1/TR
- Part No.:
- JAN1N4118C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4118C-1/TR.pdf
- Description:
- DIODE ZENER 27V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,400
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Product details
Overview
JAN1N4118C-1/TR from Microsemi is a 27 V, 2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JAN level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4118C-1/TR datasheet, JAN1N4118C-1/TR pinout, JAN1N4118C-1/TR application, or JAN1N4118C-1/TR equivalent, key selection criteria include Zener voltage tolerance (±2%), noise density (1 µV/√Hz), temperature coefficient (+0.090 %/°C), and JANS-qualified thermal derating behavior up to +175 °C junction temperature.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 27 V at 250 mA test current, exhibiting low dynamic impedance (150 Ω) and minimal capacitance (<1 pF typical). Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and radiation exposure.
The diode is polarity-marked with a cathode band and requires reverse-bias operation (banded end positive) for regulation. It delivers stable regulation across wide current ranges (IZK to IZM = 20.5 mA to 40 mA) and maintains low noise density - critical for reference circuits in analog signal chains and precision instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 27.0 V ±2% at 250 mA - defines precise regulation point for feedback loops in regulated DC-DC converters |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - sets maximum continuous power handling on standard FR4 PCBs |
| Zener Impedance ZZT | 150 Ω at 250 mA - determines output voltage stability under load transients |
| Noise Density | 1 µV/√Hz - enables use in low-noise voltage references for ADCs and sensor front-ends |
| Temp Coefficient αVZ | +0.090 %/°C - quantifies drift over temperature; supports predictable compensation in wide-range environments |
| Reverse Leakage IR | 10 nA @ 21.3 V - ensures minimal quiescent current in standby or battery-backed systems |
| Junction Temp Range | –65 °C to +175 °C - qualifies for extended-temperature military and avionics applications |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead plating; cathode indicated by band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal | Connected to system ground or common return path; must be held at lower potential than cathode during regulation |
| Cathode | Regulated output terminal | Banded end; connected to input supply rail; maintains 27 V relative to anode when reverse-biased above knee current |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for mission-critical systems requiring screening to military standards |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Low noise density (1 µV/√Hz) | Enables direct use in high-resolution analog references without external filtering |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| ESD immunity per MIL-STD-750 Method 1020 | Withstands >4 kV HBM without parameter shift - simplifies handling in production and field repair |
Applications
| Avionics Power Reference | Spacecraft Voltage Monitor |
|---|---|
Use Scenario: Stable 27 V reference for ADC calibration and sensor biasing in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference providing traceable, low-drift regulation independent of load current variation. Use Value: ±2% initial tolerance and +0.090 %/°C tempco ensure <±0.5% total error over –55 °C to +125 °C operating range. | Use Scenario: Radiation-hardened voltage clamp in satellite power bus monitoring circuits. IC Role / Device Role / Timing Role: Overvoltage protection element and precision threshold detector in telemetry subsystems. Use Value: Inherent radiation hardness per MicroNote 050 and hermetic DO-35 packaging ensure functional integrity after 100 krad(Si) TID exposure. |
| Military Radio PSU | Undersea Sonar Bias Supply |
Use Scenario: Regulation of local 27 V rail feeding RF power amplifier stages in handheld tactical radios. IC Role / Device Role / Timing Role: Primary shunt regulator maintaining stable bias under pulsed RF load conditions. Use Value: 150 Ω ZZT and 500 mW rating support transient current surges up to 40 mA without voltage droop exceeding 6 V. | Use Scenario: Low-noise bias source for hydrophone preamplifiers deployed in deep-ocean sensor arrays. IC Role / Device Role / Timing Role: Ultra-low-noise voltage reference establishing DC operating point for high-gain analog front-ends. Use Value: 1 µV/√Hz noise density prevents degradation of SNR in sub-mV signal detection below 1 kHz bandwidth. |
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 V, 2% Zener voltage but in DO-213AA surface-mount package; no axial leads | Requires SMT reflow assembly; unsuitable for through-hole prototyping or wire-wrap boards | Select when board space is constrained and automated assembly is used |
| JANTXV1N4118C-1 | Identical electrical specs but qualified to JANTXV level with enhanced screening and tighter lot traceability | Required for programs mandating JANTXV-level documentation and failure analysis reporting | Select when contractual requirements specify JANTXV qualification beyond JAN |
Compared with JAN1N4118C-1/TR, the 1N4118US-1 offers identical regulation performance in a compact SMT form factor, while JANTXV1N4118C-1 adds extended screening rigor - both serve distinct mechanical and compliance needs without altering core voltage regulation behavior.
Availability
JAN1N4118C-1/TR is available at Aetrix Electronics and suitable for avionics power reference, spacecraft voltage monitor, and military radio PSU applications requiring stable component supply with full MIL-spec traceability and RoHS-compliant options.
Supply support for JAN1N4118C-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 JAN1N4118C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation in harsh-environment systems where long-term stability and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance of JAN1N4118C-1/TR?
JAN1N4118C-1/TR has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number per Microsemi's nomenclature. This means its nominal 27 V Zener voltage falls within 26.46 V to 27.54 V at 250 mA test current and 25 °C ambient, verified per MIL-PRF-19500/435 screening.
Is JAN1N4118C-1/TR RoHS compliant?
JAN1N4118C-1/TR is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions (e.g., 1N4118C-1e3); JAN-level parts like JAN1N4118C-1/TR use traditional tin-lead plating per MIL-STD-750 and are exempt from RoHS under military procurement waivers.
What does the "TR" suffix indicate in JAN1N4118C-1/TR?
The "TR" suffix in JAN1N4118C-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. This version contains the same JAN-qualified die and DO-35 package as the bulk version but is supplied on carrier tape for high-volume manufacturing.
How is polarity marked on JAN1N4118C-1/TR?
JAN1N4118C-1/TR uses a single cathode band near one lead end to indicate polarity. For proper Zener regulation, the banded (cathode) end must be held at a higher potential than the unmarked (anode) end - i.e., reverse-biased operation - with current flowing from cathode to anode.
What is the maximum Zener current IZM for JAN1N4118C-1/TR?
The maximum Zener current IZM for JAN1N4118C-1/TR is 40 mA, derived from its 500 mW power rating and 27 V Zener voltage (P = V × I → I = 0.5 W / 27 V ≈ 18.5 mA), but specified as 40 mA in Microsemi's Electrical Characteristics table to account for thermal margin and transient capability under controlled lead-temperature conditions.
JAN1N4118C-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:
- ±2%
- Power - Max:
- -
- 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)
JAN1N4118C-1/TR FAQ
1.How can I place an order for JAN1N4118C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4118C-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 JAN1N4118C-1/TR reliable?
The price and inventory of JAN1N4118C-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 JAN1N4118C-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4118C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4118C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4118C-1/TR?
JAN1N4118C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4118C-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 JAN1N4118C-1/TR?
For technical support, including JAN1N4118C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4118C-1/TR requirements.
6.How does Aetrix verify that JAN1N4118C-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4118C-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 JAN1N4118C-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4118C-1/TR?
All JAN1N4118C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4118C-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 JAN1N4118C-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4118C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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