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Microchip Technology JAN1N4123C-1/TR
- Part No.:
- JAN1N4123C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4123C-1/TR.pdf
- Description:
- DIODE ZENER 39V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,719
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Product details
Overview
JAN1N4123C-1/TR from Microsemi is a 39 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 JAN1N4123C-1/TR datasheet, JAN1N4123C-1/TR pinout, JAN1N4123C-1/TR application, or JAN1N4123C-1/TR equivalent, key selection criteria include Zener voltage tolerance (±2%), temperature coefficient (+0.095 %/°C), noise density (1 µV/√Hz), maximum Zener current (29.7 mA), and JANS-qualified thermal derating behavior.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 39.0 V at 250 mA test current, exhibiting low dynamic impedance (200 Ω) and minimal capacitance (≈9.8 pF). Its internal metallurgical bond ensures stable breakdown characteristics across temperature extremes.
The diode delivers regulated output under reverse bias with cathode band marking polarity, supports operation from –65 °C to +175 °C junction temperature, and maintains ≤0.01 µA reverse leakage at VR = 31.2 V - critical for low-power reference stability in radiation-hardened systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 39.0 V ±2% at IZT = 250 mA - enables precise 39 V rail regulation with tight tolerance for analog references. |
| Power Dissipation | 500 mW at TC = 25 °C, linearly derated to zero at 175 °C - defines thermal design margin for PCB copper pad layout. |
| Dynamic Impedance ZZT | 200 Ω at IZT = 250 mA - determines output voltage variation under load transients (ΔVZ ≈ 50 mV per 250 µA ΔI). |
| Noise Density ND | 1 µV/√Hz at IZT = 250 mA - ensures low-noise performance in precision instrumentation and ADC reference circuits. |
| Temp Coefficient αVZ | +0.095 %/°C - quantifies drift magnitude (≈37 mV/°C) for system-level thermal compensation planning. |
| Reverse Leakage IR | ≤0.01 µA at VR = 31.2 V - guarantees negligible quiescent current draw in standby or battery-backed circuits. |
| Forward Voltage VF | 1.1 V at IF = 200 mA - defines forward conduction loss during transient overvoltage clamping events. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead plating; cathode indicated by single black band; weight ≈0.2 g; lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal in Zener configuration | Connected to system ground or lower-potential node; establishes reference point for regulated cathode voltage. |
| Cathode | Regulated output terminal (banded end) | Delivers stable 39 V output when reverse-biased; must be held positive relative to anode for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for mission-critical aerospace avionics and satellite power conditioning. |
| Metallurgical bonding | Eliminates interfacial delamination risk under thermal cycling and mechanical shock. |
| Low noise density (1 µV/√Hz) | Supports high-resolution analog signal chains without introducing measurable broadband noise. |
| Hermetic glass sealing | Prevents moisture ingress and parameter shift over decades in harsh environmental storage. |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for LEO/MEO space applications. |
Applications
| Aerospace Power Reference | Defense System Voltage Clamp |
|---|---|
Use Scenario: Stable 39 V reference for analog-to-digital converters in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage regulator providing precision bias for op-amp input stages and DAC buffers. Use Value: ±2% initial tolerance and +0.095 %/°C tempco ensure <±0.5% total error over –55 °C to +125 °C operating range. | Use Scenario: Overvoltage protection on 28 V DC distribution bus in military vehicle electronics. IC Role / Device Role / Timing Role: Crowbar element triggered during surge events exceeding 39 V threshold. Use Value: 500 mW power rating and 200 Ω dynamic impedance limit clamping voltage overshoot to <41 V at 250 mA fault current. |
| Satellite Onboard Instrumentation | Nuclear Test Facility Sensor Bias |
Use Scenario: Low-noise bias supply for radiation detector preamplifiers aboard Earth observation satellites. IC Role / Device Role / Timing Role: Low-noise Zener reference replacing active regulators where EMI sensitivity is prohibitive. Use Value: 1 µV/√Hz noise density prevents degradation of sub-100 eV energy resolution in silicon drift detectors. | Use Scenario: High-stability reference in neutron flux monitoring systems exposed to gamma fields. IC Role / Device Role / Timing Role: Radiation-hardened voltage standard for calibration of pulse-height analyzers. Use Value: Inherent TID tolerance per MicroNote 050 eliminates need for shielding or derating in 10⁵ rad(Si) environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4123US-1 | Same electrical specs but in DO-213AA surface-mount package; no axial leads. | Required for automated SMT assembly; unsuitable for through-hole prototyping or manual repair. | Select when board space constraints or reflow compatibility outweigh lead-forming flexibility. |
| JANTXV1N4123C-1 | Identical Zener parameters but qualified to JANTXV level (enhanced screening, tighter parametric limits). | Needed for programs requiring extended burn-in, lot traceability, and failure analysis support. | Select when program specification mandates JANTXV-level reliability documentation and test reports. |
Compared with JAN1N4123C-1/TR, the 1N4123US-1 offers identical regulation performance in a compact SMT form factor, while JANTXV1N4123C-1 provides higher screening rigor - enabling trade-offs between manufacturability and assurance level without altering circuit design.
Availability
JAN1N4123C-1/TR is available at Aetrix Electronics and suitable for aerospace power reference, defense system voltage clamp, and satellite onboard instrumentation requiring stable component supply with full MIL-spec traceability and RoHS-compliant plating.
Supply support for JAN1N4123C-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 JAN1N4123C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation in radiation-exposed, thermally extreme, and long-lifecycle systems.
FAQ
What is the Zener voltage tolerance for JAN1N4123C-1/TR?
The JAN1N4123C-1/TR has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in its part number per Microsemi's nomenclature. This corresponds to a nominal 39.0 V Zener voltage ranging from 38.22 V to 39.78 V at 250 mA test current and 25 °C ambient temperature. The tolerance remains valid across the full qualified temperature range when applied within derated power limits.
Is JAN1N4123C-1/TR RoHS compliant?
Yes, JAN1N4123C-1/TR is RoHS compliant, as confirmed by the "e3" suffix in its full ordering designation (JAN1N4123C-1/TR/e3). Per Microsemi documentation, RoHS compliance applies to commercial-grade versions; however, this part retains JAN-level reliability qualification while using annealed matte-tin plating instead of tin-lead. Full compliance documentation is available upon request.
What is the maximum reverse leakage current for JAN1N4123C-1/TR?
The maximum reverse leakage current (IR) for JAN1N4123C-1/TR is 0.01 µA at VR = 31.2 V and 25 °C, per the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This ultra-low leakage supports high-impedance bias networks and minimizes error in precision reference applications where leakage-induced voltage drop must remain below 1 µV across 100 MΩ source impedances.
How does the temperature coefficient affect JAN1N4123C-1/TR performance?
JAN1N4123C-1/TR has a temperature coefficient of +0.095 %/°C, meaning its Zener voltage increases by approximately 37.05 mV per degree Celsius rise above 25 °C. At +125 °C, the total drift is ~9.5 V, resulting in a final VZ ≈ 48.5 V - a critical consideration for thermal design margins in uncooled enclosures. This coefficient is fixed and non-adjustable.
Can JAN1N4123C-1/TR be used in surface-mount designs?
No, JAN1N4123C-1/TR uses the axial-leaded DO-35 (DO-204AH) package and is not suitable for direct surface-mount assembly. For SMT implementation, Microsemi offers the functionally identical 1N4123US-1 in DO-213AA package. Substituting JAN1N4123C-1/TR into an SMT footprint would require mechanical adaptation and void MIL-spec compliance due to altered thermal and mechanical stress profiles.
JAN1N4123C-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:
- ±2%
- 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)
JAN1N4123C-1/TR FAQ
1.How can I place an order for JAN1N4123C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4123C-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 JAN1N4123C-1/TR reliable?
The price and inventory of JAN1N4123C-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 JAN1N4123C-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4123C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4123C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4123C-1/TR?
JAN1N4123C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4123C-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 JAN1N4123C-1/TR?
For technical support, including JAN1N4123C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4123C-1/TR requirements.
6.How does Aetrix verify that JAN1N4123C-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4123C-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 JAN1N4123C-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4123C-1/TR?
All JAN1N4123C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4123C-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 JAN1N4123C-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4123C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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