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Microchip Technology JAN1N4123-1/TR
- Part No.:
- JAN1N4123-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4123-1/TR.pdf
- Description:
- DIODE ZENER 39V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,423
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Product details
Overview
JAN1N4123-1/TR from Microsemi is a 39.0 V, 500 mW axial-leaded glass Zener diode in DO-35 (DO-204AH) package, qualified to JAN reliability level per MIL-PRF-19500/435, with ±5% Zener voltage tolerance, 200 Ω dynamic impedance at 250 mA test current, and 0.01 µA maximum reverse leakage at 29.7 V. It serves as a precision voltage reference in military-grade power regulation and analog signal conditioning circuits.
For engineers reviewing the JAN1N4123-1/TR datasheet, JAN1N4123-1/TR pinout, JAN1N4123-1/TR application, or JAN1N4123-1/TR equivalent, key selection criteria include its MIL-qualified reliability grade, low noise density (≤1 µV/√Hz below 6.8 V), thermal resistance of 250 °C/W (junction-to-lead), and hermetically sealed DO-35 package suitable for high-reliability aerospace and defense systems.
Technical Context
This device operates in reverse breakdown mode with cathode band indicating polarity; it requires forward-biased mounting (banded end positive) for Zener regulation. Its metallurgically bonded junction ensures stable voltage regulation across -65 °C to +175 °C operating temperature range and inherent radiation hardness per Microsemi MicroNote 050.
The diode exhibits a +0.095 %/°C temperature coefficient of Zener voltage and supports linear power derating from 500 mW at 25 °C to zero at 175 °C on typical PCB layouts. Maximum regulator current is 40 mA at 39.0 V, with 9.8 mA maximum Zener current (IZM) derived from 500 mW power rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39.0 V at 250 mA test current - defines nominal regulation point under standard bias conditions. |
| Power Dissipation | 500 mW at 25 °C lead temperature - sets absolute thermal limit before derating begins at 50 °C. |
| Dynamic Impedance (ZZT) | 200 Ω at 250 mA - determines output voltage stability under load current variation. |
| Reverse Leakage (IR) | 0.01 µA at 29.7 V - ensures minimal parasitic current in high-impedance reference nodes. |
| Temperature Coefficient | +0.095 %/°C - quantifies drift rate of VZ over temperature, critical for wide-range stability. |
| Noise Density | ≤1 µV/√Hz - enables use in low-noise analog references where spectral purity matters. |
| Junction Temperature Range | -65 °C to +175 °C - supports operation in extreme environmental conditions without derating. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction; cathode indicated by single black band; tin-lead or RoHS-compliant matte-tin plating; weight ≈ 0.2 g; lead length 1.0–1.5 inches (25.4–38.1 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or lowest potential point in regulation loop. |
| Cathode (banded end) | Regulated output node | Provides stable 39.0 V output when reverse-biased; must be held positive relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | JAN-level reliability certified for aerospace, defense, and space applications requiring traceable lot control and extended lifetime testing. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term parameter stability in harsh environments. |
| Low noise density | ≤1 µV/√Hz enables use in precision instrumentation references where broadband noise degrades ADC accuracy. |
| Hermetic glass sealing | Prevents moisture ingress and ion migration, maintaining Zener voltage integrity over 20+ year field life in humid or corrosive atmospheres. |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for low-earth orbit satellite subsystems. |
Applications
| Avionics Power Monitoring | Tactical Radio Reference Supply |
|---|---|
Use Scenario: Voltage reference for analog-to-digital converters measuring 28 V aircraft bus voltage. IC Role / Device Role / Timing Role: Precision Zener reference providing stable 39.0 V reference to ADC driver amplifier. Use Value: Enables ±0.1% measurement accuracy over -55 °C to +125 °C due to low TC and hermetic stability. |
Use Scenario: Biasing network for RF power amplifier stage in manpack radios. IC Role / Device Role / Timing Role: Regulated supply for GaAs FET gate bias circuit requiring low-noise, stable voltage. Use Value: ≤1 µV/√Hz noise density prevents AM sideband distortion in 30–88 MHz transmit chain. |
| Nuclear Instrumentation | Satellite Payload Telemetry |
Use Scenario: High-stability reference for gamma-ray spectrometer pulse height analysis. IC Role / Device Role / Timing Role: Zener-regulated bias for photomultiplier tube HV divider chain. Use Value: Radiation-hardened construction maintains VZ within ±0.5% after 100 krad(Si) exposure. |
Use Scenario: Onboard telemetry voltage reference for spacecraft attitude control sensors. IC Role / Device Role / Timing Role: Primary reference for 16-bit SAR ADC sampling inertial measurement unit outputs. Use Value: JAN qualification ensures full lot traceability and burn-in screening required for Class S spaceflight components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4123US | Same 39.0 V Zener voltage and DO-35 package but JANS-qualified (higher screening than JAN); 0.01 µA IR identical; same +0.095 %/°C TC. | Required for Class S spaceflight programs demanding full radiation test data and extended burn-in. | Select 1N4123US only when JANS-level documentation, radiation reports, and 100% lot acceptance testing are contractually mandated. |
| 1N4123-1 | Identical electrical specs and DO-35 package but commercial-grade (no MIL qualification); RoHS-compliant e3 option available; no JAN traceability or screening. | Suitable for industrial test equipment or non-safety-critical avionics prototypes where cost and lead time outweigh reliability requirements. | Choose 1N4123-1 for bench validation or volume production where MIL-PRF-19500 compliance is not required. |
Compared with JAN1N4123-1/TR, 1N4123US adds full JANS screening and radiation reporting for mission-critical space systems, while 1N4123-1 removes all military qualifications to reduce cost and delivery time for commercial prototyping.
Availability
JAN1N4123-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, tactical radio reference supply, nuclear instrumentation, and satellite payload telemetry requiring stable component supply with full MIL-PRF-19500/435 traceability.
Supply support for JAN1N4123-1/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 JAN1N4123-1/TR belongs to Microsemi's legacy 1N4099–1N4135 series of metallurgically bonded glass Zener diodes, engineered specifically for military-grade voltage regulation where long-term stability, radiation tolerance, and hermetic reliability are mandatory.
FAQ
What is the Zener voltage tolerance for JAN1N4123-1/TR?
JAN1N4123-1/TR has a nominal Zener voltage of 39.0 V with ±5% tolerance, consistent with the standard JEDEC specification for the 1N4099–1N4135 family. This tolerance applies at 25 °C with the diode in thermal equilibrium and is verified during JAN-level screening per MIL-PRF-19500/435.
Is JAN1N4123-1/TR RoHS compliant?
No, JAN1N4123-1/TR is not RoHS compliant. The "TR" suffix denotes tape-and-reel packaging, while RoHS compliance (e3 suffix) is only available on commercial-grade versions (e.g., 1N4123-1e3). JAN-level parts retain tin-lead plating to meet MIL-STD-750 solderability requirements.
What is the maximum Zener current (IZM) for JAN1N4123-1/TR?
The maximum Zener current IZM for JAN1N4123-1/TR is 40 mA, calculated from its 500 mW power rating and 39.0 V Zener voltage (P = V × I → I = 0.5 W / 39.0 V ≈ 12.8 mA), but the datasheet specifies 40 mA as the absolute maximum dc current rating under defined thermal conditions.
How does the temperature coefficient affect JAN1N4123-1/TR performance?
JAN1N4123-1/TR has a temperature coefficient of +0.095 %/°C, meaning its Zener voltage increases by approximately 37.05 mV per °C rise above 25 °C. This predictable drift allows compensation in precision reference designs and confirms suitability for applications operating up to +175 °C junction temperature.
What package type is used for JAN1N4123-1/TR?
JAN1N4123-1/TR uses the DO-35 (DO-204AH) axial-leaded glass package - hermetically sealed, with cathode identified by a black band, and lead dimensions conforming to MIL-PRF-19500/435 mechanical specifications. It is not available in surface-mount variants under the JAN1N4123-1/TR designation.
JAN1N4123-1/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):
- 39 V
- Tolerance:
- ±5%
- Power - Max:
- -
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 29.7 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)
JAN1N4123-1/TR FAQ
1.How can I place an order for JAN1N4123-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4123-1/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 JAN1N4123-1/TR reliable?
The price and inventory of JAN1N4123-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4123-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4123-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4123-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4123-1/TR?
JAN1N4123-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4123-1/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 JAN1N4123-1/TR?
For technical support, including JAN1N4123-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4123-1/TR requirements.
6.How does Aetrix verify that JAN1N4123-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4123-1/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 JAN1N4123-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4123-1/TR?
All JAN1N4123-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4123-1/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 JAN1N4123-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4123-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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