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Microchip Technology JANTX1N4123D-1/TR
- Part No.:
- JANTX1N4123D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4123D-1/TR.pdf
- Description:
- DIODE ZENER 39V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,931
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Product details
Overview
JANTX1N4123D-1/TR from Microsemi is a 39 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4123D-1/TR datasheet, JANTX1N4123D-1/TR pinout, JANTX1N4123D-1/TR application, or JANTX1N4123D-1/TR equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification details critical for precision biasing and reference design.
Technical Context
This Zener diode operates in reverse breakdown with cathode-banded polarity, delivering stable 39 V regulation at 250 mA test current (IZT). Its metallurgical bond construction ensures low noise (1 µV/√Hz typical) and radiation hardness per MicroNote 050.
It exhibits +0.095 %/°C temperature coefficient and 200 Ω dynamic impedance (ZZT) at IZT, supporting precision reference applications across -65 °C to +175 °C junction temperature range with 0.5 W derated power handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 39.0 V ±1% at 250 mA - enables precise voltage reference in analog circuits requiring tight tolerance |
| Power Dissipation PM(AV) | 0.5 W at 25 °C - supports continuous regulation in compact, thermally constrained layouts |
| Dynamic Impedance ZZT | 200 Ω at IZT - ensures minimal output voltage variation under load current changes |
| Noise Density ND | 1 µV/√Hz - critical for low-noise references in instrumentation and ADC biasing |
| Temp Coefficient αVZ | +0.095 %/°C - allows predictable drift compensation in wide-temperature environments |
| Max Reverse Current IR | 10 µA at 29.7 V - guarantees low leakage in high-impedance sensing nodes |
| Junction Temp Range | -65 °C to +175 °C - validated for extended operation in avionics and space-grade systems |
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 | Reverse-biased input terminal | Connected to lower-potential node; carries reverse leakage current below VZ |
| Cathode | Zener output / regulated voltage node | Banded end; supplies stable 39 V reference when reverse-biased above breakdown |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense programs requiring screened, lot-tested components |
| Metallurgical bond construction | Eliminates interfacial voids, improving thermal stability and long-term parameter consistency |
| 1% Zener voltage tolerance (D suffix) | Reduces calibration overhead in precision reference designs versus standard 5% variants |
| Low noise density (1 µV/√Hz) | Enables use in high-resolution analog front-ends without additional filtering |
| Radiation hardness (MicroNote 050) | Supports operation in TID environments up to 100 krad(Si) without parameter shift |
Applications
| Avionics Power Reference | Spacecraft Sensor Biasing |
|---|---|
Use Scenario: Providing stable 39 V reference for analog-to-digital converters in flight control computers. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC voltage scaling and offset calibration. Use Value: 1% tolerance and +0.095 %/°C TC ensure <±0.5% total error over -55 °C to +125 °C operating range. | Use Scenario: Biasing photodiode amplifiers in star tracker optical sensors aboard LEO satellites. IC Role / Device Role / Timing Role: Low-noise, radiation-hardened Zener reference for transimpedance amplifier feedback networks. Use Value: 1 µV/√Hz noise density prevents signal degradation in sub-nA photocurrent measurement paths. |
| Ground-Based Radar PSU | Military Radio RF Stage Bias |
Use Scenario: Regulating auxiliary supply rails in high-voltage radar pulse modulator power supplies. IC Role / Device Role / Timing Role: Overvoltage clamp and reference for crowbar circuitry protecting GaN RF amplifiers. Use Value: 0.5 W power rating and 200 Ω ZZT allow reliable clamping during transient surges without thermal runaway. | Use Scenario: Setting gate bias voltage for LDMOS power transistors in tactical HF/VHF radios. IC Role / Device Role / Timing Role: Stable DC bias generator ensuring consistent RF gain and linearity across temperature. Use Value: JANTX screening and -65 °C to +175 °C operation guarantee performance in desert and arctic field conditions. |
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-1 | Same 39 V, 1% Zener voltage but in DO-213AA surface-mount package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy chassis mounts | Select when automated assembly and board space reduction are prioritized over mechanical serviceability |
| JANS1N4123D-1 | Identical electrical specs but qualified to JANS (highest MIL-PRF-19500 reliability level); higher screening cost | Required for mission-critical spaceflight hardware where single-event burnout immunity is mandated | Select only when JANS-level radiation testing and lot traceability are contractually required |
Compared with JANTX1N4123D-1/TR, the DO-213AA alternative trades axial-mount flexibility for SMT compatibility, while the JANS variant adds radiation assurance at significant cost premium-neither is pin-compatible due to differing packages or screening levels.
Availability
JANTX1N4123D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, spacecraft sensor biasing, and ground-based radar PSU requiring stable component supply with full MIL-spec traceability and lot documentation.
Supply support for JANTX1N4123D-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 analog and mixed-signal ICs, discrete devices, and RF solutions for aerospace, defense, and industrial markets.
The JANTX1N4123D-1/TR belongs to Microsemi's legacy 1N4099–1N4135 family of MIL-qualified Zener diodes, engineered specifically for precision voltage regulation in harsh-environment electronic systems where long-term stability and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4123D-1/TR?
JANTX1N4123D-1/TR has a nominal Zener voltage of 39.0 V with ±1% tolerance, as indicated by the "D" suffix in the part number per Microsemi's nomenclature. This tolerance is guaranteed at 25 °C with 250 mA test current (IZT), and applies across the full qualified operating temperature range when used within derated power limits.
Is JANTX1N4123D-1/TR RoHS compliant?
No, JANTX1N4123D-1/TR is not RoHS compliant. The "e3" RoHS suffix is only available on commercial-grade versions of this family (e.g., 1N4123D-1e3), not on JANTX-level military-qualified parts. JANTX1N4123D-1/TR uses traditional tin-lead plating per MIL-STD-750, method 2026, and is exempt from RoHS under EU Directive 2011/65/EU Annex III for aerospace and defense applications.
What is the maximum Zener current IZM for JANTX1N4123D-1/TR?
The maximum Zener current IZM for JANTX1N4123D-1/TR is 40 mA, derived from its 0.5 W power rating and 39 V Zener voltage (P = V × I → I = 0.5 W / 39 V ≈ 12.8 mA), but the datasheet specifies 40 mA as the absolute maximum dc current before exceeding thermal limits under defined lead-length conditions. Operation beyond 29.7 mA (75% of IZM) requires careful thermal derating per Figure 2.
Does JANTX1N4123D-1/TR have radiation hardness certification?
Yes, JANTX1N4123D-1/TR is inherently radiation hard as documented in Microsemi MicroNote 050. It is qualified to withstand total ionizing dose (TID) up to 100 krad(Si) without parametric shift beyond specification limits, making it suitable for low-earth orbit (LEO) and certain geosynchronous satellite subsystems where radiation-induced degradation must be minimized.
What does the "TR" suffix mean in JANTX1N4123D-1/TR?
"TR" denotes tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. JANTX1N4123D-1/TR is supplied in reels containing standard quantities (typically 2,000 units per reel), with carrier tape designed for compatibility with industry-standard feeders. This format supports high-volume manufacturing while preserving MIL-spec traceability and handling requirements.
JANTX1N4123D-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:
- ±1%
- Power - Max:
- 500 mW
- 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)
JANTX1N4123D-1/TR FAQ
1.How can I place an order for JANTX1N4123D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4123D-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 JANTX1N4123D-1/TR reliable?
The price and inventory of JANTX1N4123D-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 JANTX1N4123D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4123D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4123D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4123D-1/TR?
JANTX1N4123D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4123D-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 JANTX1N4123D-1/TR?
For technical support, including JANTX1N4123D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4123D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4123D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4123D-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 JANTX1N4123D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4123D-1/TR?
All JANTX1N4123D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4123D-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 JANTX1N4123D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4123D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4123D-1/TR Tags
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