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Microchip Technology JANS1N4124-1/TR
- Part No.:
- JANS1N4124-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4124-1/TR.pdf
- Description:
- DIODE ZENER 43V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,912
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Product details
Overview
JANS1N4124-1/TR from Microsemi is a 43.0 V, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications, with 1% Zener voltage tolerance, 250 µA test current, and 250 Ω dynamic impedance at IZT.
For engineers reviewing the JANS1N4124-1/TR datasheet, JANS1N4124-1/TR pinout, JANS1N4124-1/TR application, or JANS1N4124-1/TR equivalent, key selection criteria include its radiation-hardened construction, low noise density (≤1 µV/√Hz), temperature coefficient of +0.095 %/°C, and hermetic DO-35 packaging suitable for extreme-environment voltage regulation.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-bias breakdown mode, with cathode band marking polarity and specified Zener voltage measured at 250 µA IZT under thermal equilibrium. Its metallurgical bond ensures stable junction behavior across wide temperature ranges (-65 °C to +175 °C).
The JANS1N4124-1/TR exhibits low capacitance (typical <2 pF at 0 V), minimal ESD sensitivity per MIL-STD-750 Method 1020, and inherent radiation hardness documented in Microsemi MicroNote 050 - characteristics critical for space-grade power conditioning and reference circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 43.0 V ±1% at 250 µA - enables precise 43 V reference generation with tight tolerance for mission-critical biasing. |
| Power Dissipation | 500 mW @ TC = 25 °C - supports stable regulation in compact through-hole layouts with linear derating to zero at 175 °C. |
| Dynamic Impedance ZZT | 250 Ω @ 250 µA - ensures low AC impedance for effective ripple suppression in analog supply rails. |
| Reverse Leakage IR | ≤0.01 µA @ 32.7 V - guarantees minimal quiescent current draw in low-power standby circuits. |
| Temp. Coefficient αVZ | +0.095 %/°C - provides predictable, monotonic VZ drift over temperature for calibrated reference designs. |
| Noise Density ND | ≤1 µV/√Hz @ IZT - delivers ultra-low broadband noise essential for high-resolution ADC references and sensor excitation. |
| Max Zener Current IZM | 32.7 mA - defines safe continuous operating limit before thermal runaway under full-rated power. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead or RoHS-compliant matte-tin 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 | Reference Ground Node | Connected to system ground or lowest potential node; serves as return path for Zener current. |
| Cathode (banded end) | Regulated Output Node | Provides stable 43.0 V output when reverse-biased; must be held positive relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical Bond Construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock in flight hardware. |
| JANS Qualification | Fully tested to MIL-PRF-19500/435 requirements including burn-in, life test, and radiation exposure screening. |
| Radiation Hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - no additional shielding required. |
| Low Capacitance | Typical <2 pF at 0 V - preserves high-frequency signal integrity in RF bias networks and fast-switching regulators. |
| ESD Immunity | Non-sensitive per MIL-STD-750 Method 1020 - withstands handling without special grounding protocols. |
Applications
| Spacecraft Power Bus Regulation | Aerospace Sensor Reference Supply |
|---|---|
Use Scenario: Regulating unregulated 48 V bus down to stable 43 V for avionics subsystems requiring fault-tolerant voltage control. IC Role / Device Role / Timing Role: Shunt Zener regulator providing passive overvoltage clamping and precision biasing for DC-DC converter feedback networks. Use Value: JANS1N4124-1/TR's radiation hardness and -65 °C to +175 °C operation ensure uninterrupted regulation during launch vibration and orbital thermal extremes. | Use Scenario: Supplying excitation voltage to piezoresistive pressure transducers in jet engine monitoring systems. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference source for ratiometric analog front-end calibration. Use Value: JANS1N4124-1/TR's ≤1 µV/√Hz noise density and +0.095 %/°C αVZ enable sub-0.1% measurement accuracy across engine temperature profiles. |
| Military Radar Bias Networks | Satellite Payload Voltage Monitoring |
Use Scenario: Providing stable bias to GaAs FET amplifiers in phased-array radar transmit modules exposed to high-G acceleration. IC Role / Device Role / Timing Role: High-reliability shunt regulator maintaining constant gate bias despite input ripple and transient load changes. Use Value: JANS1N4124-1/TR's metallurgical bond and DO-35 hermetic seal prevent parameter shift under mechanical stress and vacuum outgassing. | Use Scenario: Acting as threshold detector in satellite battery management system to trigger undervoltage lockout at 43 V. IC Role / Device Role / Timing Role: Precision Zener clamp used in comparator-based voltage monitor circuit with known trip point. Use Value: JANS1N4124-1/TR's ±1% tolerance and stable αVZ allow deterministic trip-point design without post-calibration trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4124-1 | Same electrical specs but qualified only to JANTXV level; lower screening rigor than JANS. | Limited to non-flight-critical ground support equipment where full JANS radiation testing is not mandated. | Select when cost and lead time constraints outweigh need for full space qualification. |
| 1N4124US-1 | Surface-mount DO-213AA variant; identical VZ, IZT, ZZT, and αVZ but different thermal resistance and mounting geometry. | Used in PCB-space-constrained designs requiring automated assembly; lacks axial-lead flexibility for prototyping or repair. | Choose for volume production where reflow compatibility and board area savings justify redesign. |
Compared with JANTXV1N4124-1 and 1N4124US-1, the JANS1N4124-1/TR offers the highest reliability assurance for flight hardware due to full JANS screening, while retaining identical regulation performance - making it the sole choice for Class S space applications where failure is not an option.
Availability
JANS1N4124-1/TR is available at Aetrix Electronics and suitable for spacecraft power regulation, aerospace sensor reference supplies, and military radar bias networks requiring stable component supply with guaranteed long-term obsolescence management.
Supply support for JANS1N4124-1/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 JANS1N4124-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, engineered specifically for voltage reference and regulation in mission-critical defense, space, and nuclear instrumentation systems.
FAQ
What is the Zener voltage tolerance of JANS1N4124-1/TR?
The JANS1N4124-1/TR has a nominal Zener voltage of 43.0 V with a ±1% tolerance, as indicated by the "D" suffix in the part nomenclature per Microsemi's T4-LDS-0245-2 specification. This tight tolerance is verified during JANS-level screening and applies at 250 µA test current and 25 °C ambient.
Is JANS1N4124-1/TR compatible with lead-free soldering processes?
JANS1N4124-1/TR uses tin-lead plating per standard configuration and is rated for 260 °C solder temperature for 10 seconds. For RoHS compliance, Microsemi offers commercial-grade e3 variants - however, the JANS-qualified JANS1N4124-1/TR itself is not RoHS-compliant and requires SnPb soldering per MIL-STD-750 Method 2026.
What is the maximum operating temperature range for JANS1N4124-1/TR?
The JANS1N4124-1/TR is rated for junction and storage temperatures from -65 °C to +175 °C, as confirmed in the Maximum Ratings table of T4-LDS-0245-2. Its thermal resistance junction-to-lead is 250 °C/W with 3/8″ lead length, enabling reliable operation in extreme environmental conditions typical of missile guidance and satellite systems.
Does JANS1N4124-1/TR require external heat sinking?
No external heat sink is required for JANS1N4124-1/TR at ambient temperatures below 50 °C, as its 500 mW power rating is fully usable up to that point. Above 50 °C, power must be linearly derated to zero at 175 °C per Figure 2 in T4-LDS-0245-2 - standard FR4 PCB layout with 4 mm² copper pads provides sufficient thermal dissipation for most applications.
How does the noise performance of JANS1N4124-1/TR compare to lower-voltage Zeners?
JANS1N4124-1/TR exhibits ≤1 µV/√Hz noise density at 250 µA, consistent with Microsemi's specification that noise falls rapidly below 6.8 V and stabilizes at this ultra-low level for higher-voltage devices like the 43 V JANS1N4124-1/TR - making it superior to many 5–12 V Zeners in low-noise reference applications requiring high PSRR.
JANS1N4124-1/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):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 250 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 32.7 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)
JANS1N4124-1/TR FAQ
1.How can I place an order for JANS1N4124-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4124-1/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 JANS1N4124-1/TR reliable?
The price and inventory of JANS1N4124-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4124-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4124-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4124-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4124-1/TR?
JANS1N4124-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4124-1/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 JANS1N4124-1/TR?
For technical support, including JANS1N4124-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4124-1/TR requirements.
6.How does Aetrix verify that JANS1N4124-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4124-1/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 JANS1N4124-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4124-1/TR?
All JANS1N4124-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4124-1/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 JANS1N4124-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4124-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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