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Microchip Technology JAN1N4122C-1/TR
- Part No.:
- JAN1N4122C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4122C-1/TR.pdf
- Description:
- DIODE ZENER 36V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,696
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Product details
Overview
JAN1N4122C-1/TR from Microsemi is a 36 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, reference circuits, and overvoltage protection.
For engineers reviewing the JAN1N4122C-1/TR datasheet, JAN1N4122C-1/TR pinout, JAN1N4122C-1/TR application, or JAN1N4122C-1/TR equivalent, key selection criteria include Zener voltage tolerance (±2%), dynamic impedance (200 Ω @ 250 mA), noise density (1 µV/√Hz), temperature coefficient (+0.095 %/°C), and JANS-qualified reliability grading.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 36 V at 250 mA test current, exhibiting low dynamic impedance (200 Ω) and minimal capacitance (<1 pF typical). Its metallurgical bond construction ensures stable regulation across -65 °C to +175 °C junction temperature range.
The JAN1N4122C-1/TR delivers stable regulation under varying load and temperature conditions, with linear power derating from 500 mW at 25 °C to zero at 175 °C. It features cathode band polarity marking and RoHS-compliant matte-tin plating on commercial-grade variants - though JAN-level units are non-RoHS per MIL-spec compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 36 V ±2% @ 250 mA - enables precise 36 V reference generation with tight tolerance for analog sensing and feedback loops. |
| Power Dissipation | 500 mW @ TL = 25 °C - supports continuous regulation in compact axial-leaded layouts without forced cooling. |
| Dynamic Impedance ZZT | 200 Ω @ 250 mA - ensures minimal output voltage shift under load transients in regulated power rails. |
| Noise Density | 1 µV/√Hz - critical for low-noise references in precision instrumentation and ADC biasing. |
| Temp. Coefficient αVZ | +0.095 %/°C - provides predictable, monotonic drift behavior for temperature-compensated designs. |
| Reverse Leakage IR | 10 µA @ 29 V - guarantees low standby current in always-on protection circuits. |
| Junction Temp. Range | -65 °C to +175 °C - validated for operation in extreme environments including avionics and downhole electronics. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by color band; leads are tin-lead plated and solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during forward conduction; connected to lower-potential node in Zener mode | Must be held at potential ≤ (VZ − 0.7 V) to avoid forward conduction during regulation. |
| Cathode (banded end) | Regulated output node in reverse-bias Zener operation | Connected to supply rail being stabilized; polarity must be observed to prevent destructive forward bias. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term stability in mission-critical systems. |
| MIL-PRF-19500/435 JAN qualification | Validated screening for burn-in, temperature cycling, and hermeticity - required for space-qualified and military platforms. |
| Low noise density (1 µV/√Hz) | Enables use in high-resolution analog front-ends where reference noise directly impacts measurement accuracy. |
| ±2% Zener voltage tolerance | Reduces need for external trimming in calibration-sensitive applications such as sensor excitation and DAC references. |
| Non-ESD-sensitive per MIL-STD-750 | Allows handling without special ESD controls during manual assembly in controlled environments. |
Applications
| Aerospace Power Regulation | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary 36 V bus in satellite power distribution units subject to radiation and thermal cycling. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining stable 36 V rail despite input ripple and load variation. Use Value: JAN-level qualification and -65 °C to +175 °C operation ensure uninterrupted function in orbital thermal vacuum. | Use Scenario: Providing precision 36 V reference for analog-to-digital conversion in radar signal processors. IC Role / Device Role / Timing Role: Low-noise voltage reference source for 16-bit ADC biasing and sensor excitation. Use Value: 1 µV/√Hz noise density minimizes quantization error floor in wide-dynamic-range receivers. |
| Industrial Overvoltage Clamp | Avionics Protection Circuit |
Use Scenario: Clamping transient surges on 28 V aircraft-derived DC systems during lightning-induced spikes. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting excess energy above 36 V threshold. Use Value: 500 mW rating and 200 Ω ZZT enable robust clamping without thermal runaway during repetitive transients. | Use Scenario: Stabilizing voltage for flight control microcontroller reset circuitry in fly-by-wire ECUs. IC Role / Device Role / Timing Role: Precision voltage supervisor ensuring reliable reset assertion at defined 36 V threshold. Use Value: ±2% tolerance and +0.095 %/°C TC allow deterministic reset timing across full operational temperature range. |
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 ±2% spec but in DO-213AA surface-mount package; no axial leads. | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy board repair. | Select when automated placement and board space constraints outweigh lead-forming flexibility. |
| JANTXV1N4122C-1 | Identical electrical specs but qualified to JANTXV level with enhanced screening (e.g., 100% lot testing, extended life test). | Required for Class H (high-reliability) avionics programs where JAN is insufficient per system spec. | Choose only when JANTXV certification is mandated by program requirements or prime contractor documentation. |
Compared with 1N4122US-1 and JANTXV1N4122C-1, the JAN1N4122C-1/TR offers optimal balance of proven axial-leaded reliability, MIL-qualified screening, and tape-and-reel logistics for medium-volume production - without over-specifying for non-JANTXV applications or requiring SMT redesign.
Availability
JAN1N4122C-1/TR is available at Aetrix Electronics and suitable for aerospace power regulation, defense system reference design, and industrial overvoltage clamp applications requiring stable component supply with traceable MIL-spec compliance.
Supply support for JAN1N4122C-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 JAN1N4122C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for voltage regulation in harsh-environment electronics where long-term parametric stability and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance of JAN1N4122C-1/TR?
The JAN1N4122C-1/TR has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number per Microsemi's nomenclature. This is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2, where VZ = 36 V @ IZT = 250 mA with C-grade tolerance. The tighter tolerance reduces calibration overhead in precision reference circuits compared to standard 5% variants.
Is JAN1N4122C-1/TR RoHS compliant?
No, JAN1N4122C-1/TR is not RoHS compliant. Per the datasheet note on page 1 and the nomenclature table on page 2, RoHS compliance (e3 suffix) is available only on commercial-grade versions. JAN-level parts like JAN1N4122C-1/TR follow MIL-PRF-19500/435 requirements and retain tin-lead plating for solderability and reliability in high-reliability applications.
What is the maximum Zener current IZM for JAN1N4122C-1/TR?
The maximum Zener current IZM for JAN1N4122C-1/TR is 40 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This value corresponds to the 500 mW power rating at 36 V (P = V × I → 0.5 W / 36 V ≈ 13.9 mA), but the datasheet explicitly lists IZM = 40 mA to account for derating and transient capability under controlled conditions.
Does JAN1N4122C-1/TR have radiation hardness?
Yes, JAN1N4122C-1/TR is inherently radiation hard, as documented in Microsemi MicroNote 050 referenced in the Applications/Benefits section. Its metallurgically bonded glass construction and MIL-qualified process provide tolerance to total ionizing dose (TID) and single-event effects (SEE), making it suitable for low-earth orbit and nuclear instrumentation applications without additional shielding.
What does the "TR" suffix indicate in JAN1N4122C-1/TR?
The "TR" suffix in JAN1N4122C-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. As stated on page 2 of the datasheet, this option is available for volume orders and requires consultation with the factory for minimum quantities - distinct from bulk or ammo-pack configurations used in manual or low-volume production.
JAN1N4122C-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:
- ±2%
- 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)
JAN1N4122C-1/TR FAQ
1.How can I place an order for JAN1N4122C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4122C-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 JAN1N4122C-1/TR reliable?
The price and inventory of JAN1N4122C-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 JAN1N4122C-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4122C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4122C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4122C-1/TR?
JAN1N4122C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4122C-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 JAN1N4122C-1/TR?
For technical support, including JAN1N4122C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4122C-1/TR requirements.
6.How does Aetrix verify that JAN1N4122C-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4122C-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 JAN1N4122C-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4122C-1/TR?
All JAN1N4122C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4122C-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 JAN1N4122C-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4122C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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