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Microchip Technology JAN1N4122-1/TR
- Part No.:
- JAN1N4122-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4122-1/TR.pdf
- Description:
- DIODE ZENER 36V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,058
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Product details
Overview
JAN1N4122-1/TR from Microsemi is a 36 V, ±5% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded 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 JAN1N4122-1/TR datasheet, JAN1N4122-1/TR pinout, JAN1N4122-1/TR application, or JAN1N4122-1/TR equivalent, key selection criteria include Zener voltage stability over temperature (αVZ = +0.095 %/°C), low noise density (1 µV/√Hz at 36 V), dynamic impedance (200 Ω at 250 mA), and JANS-qualified reliability options.
Technical Context
This device operates as a precision shunt regulator with cathode-banded polarity, requiring reverse bias (banded end positive) for Zener conduction. Its metallurgical bond construction ensures stable junction characteristics across -65 °C to +175 °C operating range and inherent radiation hardness per MicroNote 050.
Thermal performance is defined by RθJL = 250 °C/W (at 10 mm lead length) and linear derating from 500 mW at 25 °C to zero at 175 °C. Maximum Zener current IZM is 40 mA at 36 V, with leakage current IR ≤ 0.01 µA at VR = 27.4 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 36.0 V ±5% at IZT = 250 mA - defines nominal regulation point under standard test conditions |
| Power Dissipation PM(AV) | 0.5 W at TL = 25 °C - maximum continuous DC power before thermal derating begins |
| Zener Impedance ZZT | 200 Ω at IZT = 250 mA - small-signal AC resistance affecting regulation accuracy under varying load |
| Noise Density ND | 1 µV/√Hz at IZT = 250 mA - critical for low-noise reference applications such as precision ADCs and analog front-ends |
| Temp. Coefficient αVZ | +0.095 %/°C - quantifies voltage drift with temperature; enables compensation design in wide-temp environments |
| Reverse Leakage IR | ≤0.01 µA at VR = 27.4 V - ensures minimal standby current in high-impedance bias networks |
| Junction Temp. Range | -65 °C to +175 °C - supports operation in extreme aerospace, downhole, and military platforms |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead plating; cathode indicated by single black band; weight ≈ 0.2 g; body diameter 1.42–2.29 mm, length 3.56–5.08 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to circuit ground or lower potential node during Zener regulation |
| Cathode | Banded lead | Connected to regulated voltage node; must be held at higher potential than anode for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures long-term parameter stability and reduced parameter shift under thermal cycling and radiation exposure |
| MIL-PRF-19500/435 qualification (JAN level) | Validated reliability for mission-critical systems including avionics, satellite power, and tactical radios |
| Low noise density (1 µV/√Hz) | Enables use as reference source in high-resolution data acquisition without external filtering |
| Hermetic glass sealing | Prevents moisture ingress and parameter degradation in humid or corrosive environments |
| ESD immunity (MIL-STD-750 Method 1020) | Eliminates need for external ESD protection in handling and board assembly |
Applications
| Aerospace Power Regulation | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary 36 V rail in satellite power distribution units where thermal cycling and radiation are present. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias for DC-DC controller feedback networks. Use Value: Maintains ±0.34 V regulation window over -55 °C to +125 °C due to +0.095 %/°C TC and hermetic packaging. |
Use Scenario: Precision voltage reference in radar receiver front-end biasing circuits exposed to EMI and shock. IC Role / Device Role / Timing Role: Low-noise Zener element establishing clean analog reference for RF gain control stages. Use Value: Delivers 1 µV/√Hz noise floor enabling <12-bit ENOB in 100 kHz bandwidth signal chains. |
| Industrial Sensor Excitation | Medical Imaging Bias Supply |
Use Scenario: Exciting bridge-based pressure transducers in oilfield downhole tools operating at 175 °C ambient. IC Role / Device Role / Timing Role: High-temperature-stable Zener regulating excitation voltage for Wheatstone bridges. Use Value: Sustains regulation integrity up to +175 °C junction temperature with no parameter shift beyond spec limits. |
Use Scenario: Generating stable bias for photomultiplier tube (PMT) dynode chains in portable X-ray detectors. IC Role / Device Role / Timing Role: Low-leakage (≤0.01 µA) shunt regulator ensuring minimal current error in high-impedance dynode ladders. Use Value: Prevents gain drift caused by leakage-induced voltage drop across multi-MΩ ladder resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4122US-1 | Same electrical specs but in surface-mount DO-213AA package; no axial leads | Required for automated SMT assembly; unsuitable for through-hole or manual prototyping | Select when PCB layout mandates SMT and thermal pad access is available |
| JANTXV1N4122-1 | Identical Zener parameters but qualified to JANTXV level (enhanced screening, tighter lot controls) | Needed for flight-critical subsystems where burn-in and lot traceability are mandated | Select when program requirements exceed JAN-level reliability documentation |
Compared with JAN1N4122-1/TR, 1N4122US-1 offers identical regulation performance in a space-constrained SMT form factor, while JANTXV1N4122-1 adds extended screening for mission assurance-neither is pin-compatible due to differing packages or qualification scope.
Availability
JAN1N4122-1/TR is available at Aetrix Electronics and suitable for aerospace power regulation, defense system reference, and industrial sensor excitation requiring stable component supply across extended temperature and radiation environments.
Supply support for JAN1N4122-1/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 components for aerospace, defense, and industrial markets.
The JAN1N4122-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for voltage regulation in harsh-environment electronics where parameter stability, radiation tolerance, and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance for JAN1N4122-1/TR?
JAN1N4122-1/TR has a nominal Zener voltage of 36.0 V with a standard tolerance of ±5%, as defined in the JEDEC-registered electrical characteristics table on page 3 of the T4-LDS-0245-2 datasheet. This tolerance applies at IZT = 250 mA and 25 °C ambient.
Is JAN1N4122-1/TR RoHS compliant?
No - JAN1N4122-1/TR is not RoHS compliant. The "e3" RoHS suffix is only available on commercial-grade versions (e.g., 1N4122-1e3); JAN-level parts like JAN1N4122-1/TR retain traditional tin-lead plating per MIL-STD-750 and are exempt from RoHS restrictions under defense procurement rules.
What does the "TR" suffix mean in JAN1N4122-1/TR?
The "TR" suffix indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. JAN1N4122-1/TR is supplied in reels containing standard quantities specified by Microsemi; the underlying electrical and mechanical specifications remain identical to the bulk version.
Can JAN1N4122-1/TR be used in surface-mount designs?
No - JAN1N4122-1/TR uses the axial-leaded DO-35 (DO-204AH) package and is not compatible with SMT processes. For surface-mount equivalents, consider 1N4122US-1 (DO-213AA) or 1PMT4122 (DO-216), which share identical Zener parameters but differ in package and qualification level.
What is the maximum junction temperature for JAN1N4122-1/TR?
JAN1N4122-1/TR has a rated junction and storage temperature range of -65 °C to +175 °C, as confirmed in the Maximum Ratings table on page 1 of the datasheet. This rating is maintained under full MIL-PRF-19500/435 qualification and applies to all JAN, JANTX, JANTXV, and JANS variants.
JAN1N4122-1/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):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- -
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 27.4 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)
JAN1N4122-1/TR FAQ
1.How can I place an order for JAN1N4122-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4122-1/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 JAN1N4122-1/TR reliable?
The price and inventory of JAN1N4122-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4122-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4122-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4122-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4122-1/TR?
JAN1N4122-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4122-1/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 JAN1N4122-1/TR?
For technical support, including JAN1N4122-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4122-1/TR requirements.
6.How does Aetrix verify that JAN1N4122-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4122-1/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 JAN1N4122-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4122-1/TR?
All JAN1N4122-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4122-1/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 JAN1N4122-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4122-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4122-1/TR Tags
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