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Microchip Technology JAN1N4122D-1/TR
- Part No.:
- JAN1N4122D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4122D-1/TR.pdf
- Description:
- DIODE ZENER 36V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,194
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Product details
Overview
JAN1N4122D-1/TR from Microsemi is a 36 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4122D-1/TR datasheet, JAN1N4122D-1/TR pinout, JAN1N4122D-1/TR application, or JAN1N4122D-1/TR equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification status - critical for precision reference and radiation-hardened designs.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 36.0 V at 250 mA test current (IZT), exhibiting a temperature coefficient of +0.095 %/°C and dynamic impedance of 200 Ω at IZT. Its metallurgical bond construction ensures stable regulation across wide current and temperature ranges.
Designed for high-reliability environments, JAN1N4122D-1/TR maintains ≤0.01 µA reverse leakage at 27.4 V (VR), supports up to 40 mA maximum Zener current (IZM), and delivers low noise density (1 µV/√Hz typical) - enabling use in low-drift analog references and hardened power monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36.0 V ±1% at 250 mA - enables precise 36 V rail regulation with tight tolerance for mission-critical biasing. |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in conduction-limited linear regulators without forced cooling. |
| Dynamic Impedance (ZZT) | 200 Ω at 250 mA - ensures minimal output voltage variation under load transients in feedback references. |
| Temperature Coefficient (αVZ) | +0.095 %/°C - provides predictable, monotonic drift for compensated reference designs above 30 V. |
| Noise Density (ND) | 1 µV/√Hz - enables ultra-low-noise performance in precision instrumentation and ADC reference buffers. |
| Reverse Leakage (IR) | ≤0.01 µA at 27.4 V - guarantees negligible error current in high-impedance sensing nodes. |
| Max Zener Current (IZM) | 40 mA - defines safe continuous operating limit for long-term reliability in regulated supply paths. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; must be held at lower potential than cathode for Zener operation. |
| Cathode | Regulated output node | Banded end; supplies stable 36 V when reverse-biased; polarity reversal causes forward conduction and loss of regulation. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for space-grade applications including radiation hardness per MicroNote 050 and ESD immunity per MIL-STD-750 method 1020. |
| 1% Zener voltage tolerance | Reduces calibration burden in precision voltage references and eliminates need for post-manufacture trimming in flight hardware. |
| Metallurgical bond construction | Ensures long-term parameter stability under thermal cycling and mechanical shock, critical for avionics and satellite subsystems. |
| Low noise density (1 µV/√Hz) | Supports sub-10 ppm measurement accuracy in high-resolution data acquisition systems without external filtering. |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter drift over decades, satisfying 20+ year lifecycle requirements in defense electronics. |
Applications
| Avionics Power Monitoring | Satellite Voltage Reference |
|---|---|
Use Scenario: Real-time detection of 36 V bus deviations in flight control power distribution units. IC Role / Device Role / Timing Role: Zener diode providing stable 36 V reference for comparator input in fault-detection circuitry. Use Value: 1% tolerance and +0.095 %/°C TC enable ±0.5% total error over –55 to +125 °C, meeting DO-160 Section 22 surge immunity requirements. | Use Scenario: Biasing low-noise op-amps in star tracker analog front-ends aboard LEO satellites. IC Role / Device Role / Timing Role: Low-noise 36 V reference source for precision current sources driving photodiode arrays. Use Value: 1 µV/√Hz noise density prevents degradation of <1 LSB ENOB in 18-bit SAR ADCs sampling at 1 MSPS. |
| Nuclear Instrumentation | Tactical Radio RF Biasing |
Use Scenario: High-stability bias for Geiger-Müller tube preamplifiers in radiation survey meters. IC Role / Device Role / Timing Role: Regulated 36 V supply establishing fixed gain in charge-integration amplifiers. Use Value: JANS qualification and inherent radiation hardness eliminate single-event latchup risk during field deployment in contaminated zones. | Use Scenario: Setting gate voltage for GaN RF power amplifiers in manpack radios operating across desert and arctic climates. IC Role / Device Role / Timing Role: Temperature-compensated Zener reference generating stable bias point for Class AB amplifier stages. Use Value: Linear derating from 500 mW at 25 °C to zero at 175 °C allows uninterrupted operation at full power up to +105 °C ambient. |
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 36 V, 1% spec, but in surface-mount DO-213AA package; no axial leads. | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy chassis wiring. | Select when automated pick-and-place and board space constraints outweigh manual assembly needs. |
| JANTXV1N4122D-1 | Identical electrical specs and DO-35 package, but qualified to JANTXV (not JANS) per MIL-PRF-19500/435. | Lacks full radiation hardness validation and extended temperature screening required for orbital missions. | Select for ground-based military systems where cost sensitivity outweighs space qualification requirements. |
Compared with JAN1N4122D-1/TR, 1N4122US-1 trades axial-mount flexibility for SMT manufacturability, while JANTXV1N4122D-1 reduces qualification scope to lower cost - neither offers pin-compatible replacement without verifying mechanical fit and environmental compliance.
Availability
JAN1N4122D-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite voltage reference, nuclear instrumentation, and tactical radio RF biasing requiring stable component supply across extended temperature and radiation environments.
Supply support for JAN1N4122D-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 JAN1N4122D-1/TR belongs to Microsemi's 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 of JAN1N4122D-1/TR?
JAN1N4122D-1/TR has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its nomenclature. This is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1, where VZ = 36.0 V at IZT = 250 mA with 1% tolerance. The tighter tolerance reduces calibration overhead in high-accuracy reference designs compared to standard 5% variants like JAN1N4122-1/TR.
Is JAN1N4122D-1/TR qualified for space applications?
Yes, JAN1N4122D-1/TR is qualified to JANS level per MIL-PRF-19500/435, which includes radiation hardness assurance per Microsemi MicroNote 050 and screening for spaceflight environments. Its hermetic DO-35 package, metallurgical bond construction, and guaranteed performance from –65 °C to +175 °C make it suitable for LEO and GEO satellite subsystems where long-term parametric stability is mandatory.
What is the maximum Zener current (IZM) for JAN1N4122D-1/TR?
The maximum Zener current (IZM) for JAN1N4122D-1/TR is 40 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value corresponds to the current at which the device reaches its rated 500 mW power dissipation at 25 °C. Exceeding 40 mA risks thermal runaway unless derated per the curve in Figure 2.
Does JAN1N4122D-1/TR have low noise performance?
Yes, JAN1N4122D-1/TR exhibits a typical noise density of 1 µV/√Hz, as stated in the FEATURES section and confirmed in the Electrical Characteristics table for devices ≥6.8 V. This ultra-low noise enables use in precision analog circuits such as ADC reference buffers and low-drift op-amp bias networks where spectral purity directly impacts measurement resolution.
What does the "TR" suffix indicate in JAN1N4122D-1/TR?
The "TR" suffix in JAN1N4122D-1/TR indicates tape-and-reel packaging per EIA-296 standard, intended for automated SMT placement equipment. Per the MECHANICAL and PACKAGING section on page 2, this option requires consultation with the factory for minimum order quantities and is distinct from bulk or ammo-pack configurations used in manual assembly or prototyping workflows.
JAN1N4122D-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:
- ±1%
- 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)
JAN1N4122D-1/TR FAQ
1.How can I place an order for JAN1N4122D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4122D-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 JAN1N4122D-1/TR reliable?
The price and inventory of JAN1N4122D-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 JAN1N4122D-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4122D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4122D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4122D-1/TR?
JAN1N4122D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4122D-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 JAN1N4122D-1/TR?
For technical support, including JAN1N4122D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4122D-1/TR requirements.
6.How does Aetrix verify that JAN1N4122D-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4122D-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 JAN1N4122D-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4122D-1/TR?
All JAN1N4122D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4122D-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 JAN1N4122D-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4122D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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