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Microchip Technology JAN1N4121C-1/TR
- Part No.:
- JAN1N4121C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4121C-1/TR.pdf
- Description:
- DIODE ZENER 33V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,961
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Product details
Overview
JAN1N4121C-1/TR from Microsemi is a 33 V, 2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial package, qualified to JANTXV level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace power conditioning and precision reference circuits.
For engineers reviewing the JAN1N4121C-1/TR datasheet, JAN1N4121C-1/TR pinout, JAN1N4121C-1/TR application, or JAN1N4121C-1/TR equivalent, key selection criteria include Zener voltage tolerance (±2%), dynamic impedance (200 Ω @ 250 mA), temperature coefficient (+0.095 %/°C), noise density (1 μV/√Hz), and JANTXV qualification status.
Technical Context
This device operates as a reverse-biased voltage regulator with a nominal Zener voltage of 33 V at 250 mA test current, exhibiting low dynamic impedance (200 Ω) and minimal capacitance (typ. <2 pF). Its metallurgical bond construction ensures stable breakdown characteristics across temperature extremes.
The JAN1N4121C-1/TR delivers ±2% initial voltage tolerance and a positive temperature coefficient of +0.095 %/°C, enabling predictable drift behavior in thermal-stable references. It supports operation from –65 °C to +175 °C junction temperature with hermetic glass sealing and RoHS-compliant matte-tin plating on commercial-grade variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 33 V ±2% @ 250 mA - precise regulation point for mid-range reference designs |
| Power Dissipation | 500 mW @ 25 °C - supports stable operation in compact through-hole layouts with linear derating above 50 °C |
| Dynamic Impedance ZZT | 200 Ω @ 250 mA - low AC impedance ensures minimal output voltage variation under load transients |
| Noise Density | 1 μV/√Hz @ 250 mA - ultra-low broadband noise critical for precision analog references |
| Temperature Coefficient αVZ | +0.095 %/°C - predictable positive drift enables compensation in multi-device reference stacks |
| Reverse Leakage IR | 10 μA @ 25.1 V - low leakage preserves accuracy in high-impedance bias networks |
| Junction Temperature Range | –65 °C to +175 °C - validated for extended thermal environments in avionics and downhole systems |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; banded end is positive during Zener regulation. Hermetically sealed, tin-lead or RoHS-compliant matte-tin plating, weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential rail; defines reference return path |
| Cathode (banded end) | Zener regulation output / reverse-bias anode | Provides stable 33 V output when biased positively relative to anode; polarity must be observed |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTXV qualification | Validated reliability for flight-critical and defense electronics with full traceability and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| 1 μV/√Hz noise density | Enables use in low-noise bandgap references and ADC/DAC voltage references without filtering overhead |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter shift over decades in sealed enclosures |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Allows handling without special ESD controls in production and field repair environments |
Applications
| Aerospace Power Conditioning | Precision Instrumentation Reference |
|---|---|
Use Scenario: Regulating auxiliary 33 V rails in satellite power distribution units where long-term stability and radiation tolerance are mandatory. IC Role / Device Role / Timing Role: Primary Zener reference for DC-DC converter feedback loops and overvoltage clamp protection. Use Value: JANTXV qualification and –65 °C to +175 °C operation ensure uninterrupted function across orbital thermal cycles. |
Use Scenario: Providing stable 33 V reference for 24-bit precision DACs in automated test equipment calibration modules. IC Role / Device Role / Timing Role: Low-noise voltage reference source with minimal drift over time and temperature. Use Value: 1 μV/√Hz noise density and ±2% tolerance eliminate need for post-calibration trimming. |
| Downhole Oil & Gas Sensors | Military Radio Frequency Bias Networks |
Use Scenario: Voltage regulation in high-temperature pressure transducer signal conditioners deployed at >150 °C wellbore depths. IC Role / Device Role / Timing Role: High-temperature-stable Zener element in analog front-end biasing circuits. Use Value: Validated operation up to +175 °C junction temperature avoids thermal shutdown in uncooled environments. |
Use Scenario: Establishing fixed bias points for GaAs FET amplifiers in tactical HF/VHF transceivers. IC Role / Device Role / Timing Role: Low-capacitance (≈1.5 pF) Zener clamp protecting RF amplifier gate inputs from transient overvoltage. Use Value: Minimal capacitance prevents RF signal loading while maintaining fast transient response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4121US-1 | Same 33 V, 2% Zener voltage but in surface-mount DO-213AA package; no axial leads | Used where PCB space is constrained and reflow assembly is required instead of through-hole soldering | Select 1N4121US-1 only when board layout mandates SMT and thermal mass constraints permit lower power handling |
| JAN1N4121D-1/TR | Identical electrical specs but ±1% Zener voltage tolerance instead of ±2% | Applied in metrology-grade references requiring tighter initial accuracy without post-manufacture calibration | Choose JAN1N4121D-1/TR when absolute voltage accuracy outweighs cost sensitivity and tighter tolerance is specified |
Compared with JAN1N4121C-1/TR, 1N4121US-1 offers identical regulation performance in a smaller footprint but sacrifices lead-based thermal dissipation and mechanical robustness; JAN1N4121D-1/TR improves initial accuracy at higher cost and tighter process control, making it suitable for calibration-critical rather than general-purpose regulation.
Availability
JAN1N4121C-1/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, precision instrumentation reference, and downhole oil & gas sensor applications requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JAN1N4121C-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 JAN1N4121C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for voltage regulation in mission-critical systems where parametric stability, radiation hardness, and extended temperature operation are non-negotiable.
FAQ
What is the Zener voltage tolerance of JAN1N4121C-1/TR?
The JAN1N4121C-1/TR has a Zener voltage tolerance of ±2%, corresponding to the "C" suffix in its nomenclature. This means its nominal 33 V Zener voltage is guaranteed between 32.34 V and 33.66 V at 250 mA test current and 25 °C ambient, as verified per MIL-PRF-19500/435 screening.
Is JAN1N4121C-1/TR qualified to JANTXV level?
Yes, JAN1N4121C-1/TR is qualified to JANTXV level per MIL-PRF-19500/435. This includes rigorous environmental testing, lot traceability, and screening for enhanced reliability-making it suitable for high-integrity applications such as avionics and military communications systems.
What is the maximum operating temperature for JAN1N4121C-1/TR?
The JAN1N4121C-1/TR supports a junction and storage temperature range of –65 °C to +175 °C. Its hermetic DO-35 glass package and metallurgical bond construction enable reliable operation at the full +175 °C upper limit, validated for downhole and engine-mounted electronics.
Does JAN1N4121C-1/TR have low noise performance?
Yes, JAN1N4121C-1/TR exhibits a noise density of 1 μV/√Hz at 250 mA Zener current, among the lowest in its voltage class. This ultra-low noise characteristic is confirmed in Microsemi's T4-LDS-0245-2 datasheet and makes JAN1N4121C-1/TR ideal for precision analog references.
What does the "TR" suffix indicate in JAN1N4121C-1/TR?
The "TR" suffix in JAN1N4121C-1/TR denotes tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. This format is standard for volume orders and supports consistent feeding in high-throughput SMT lines while preserving MIL-spec traceability.
JAN1N4121C-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):
- 33 V
- Tolerance:
- ±2%
- Power - Max:
- -
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 25.1 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)
JAN1N4121C-1/TR FAQ
1.How can I place an order for JAN1N4121C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4121C-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 JAN1N4121C-1/TR reliable?
The price and inventory of JAN1N4121C-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 JAN1N4121C-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4121C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4121C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4121C-1/TR?
JAN1N4121C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4121C-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 JAN1N4121C-1/TR?
For technical support, including JAN1N4121C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4121C-1/TR requirements.
6.How does Aetrix verify that JAN1N4121C-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4121C-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 JAN1N4121C-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4121C-1/TR?
All JAN1N4121C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4121C-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 JAN1N4121C-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4121C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4121C-1/TR Tags
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