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Microchip Technology 1N4133
- Part No.:
- 1N4133
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N4133.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
1N4133 from Microsemi is a 500 mW, 87 V metallurgically bonded glass Zener diode in DO-35 (DO-204AH) package, qualified to JANS level per MIL-PRF-19500/435, with ±5% Zener voltage tolerance, 1000 Ω dynamic impedance at 250 mA test current, and maximum reverse leakage of 10 nA at 69.6 V.
For engineers reviewing the 1N4133 datasheet, 1N4133 pinout, 1N4133 application, or 1N4133 equivalent, this device serves as a high-reliability voltage reference in aerospace power conditioning, radiation-hardened sensor biasing, and military-grade analog signal regulation where stable breakdown voltage and low noise density are critical.
Technical Context
The 1N4133 operates in reverse-biased Zener breakdown mode with cathode band marking polarity, requiring banded end to be positive relative to anode for regulation. Its metallurgical bond ensures mechanical robustness under thermal cycling and shock, supporting operation across –65 °C to +175 °C junction temperature range.
It exhibits +0.100 %/°C temperature coefficient above 80 V, delivers 40 µV/√Hz noise density at 87 V (per family trend), and maintains ≤10 nA reverse leakage at VR = 0.8 × VZ (69.6 V), enabling precision reference use in low-current, high-stability analog circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 87 V at 250 mA test current - defines precise regulation point for high-voltage reference design |
| Power Dissipation | 500 mW at 25 °C - sets maximum continuous DC power handling before thermal derating begins at 50 °C |
| Dynamic Impedance ZZT | 1000 Ω at IZT = 250 mA - indicates voltage regulation stability under load current variation |
| Reverse Leakage IR | ≤10 nA at 69.6 V - ensures minimal error current in high-impedance reference divider networks |
| Temperature Coefficient αVZ | +0.100 %/°C - quantifies drift rate for system-level temperature compensation planning |
| Noise Density ND | ≤40 µV/√Hz (typical, extrapolated from 6.8 V+ family data) - constrains broadband noise contribution in precision analog stages |
| Junction Temp Range | –65 °C to +175 °C - enables deployment in extended-environment avionics and space-qualified electronics |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by single black band; weight ≈0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference return node | Connected to circuit ground or lowest potential point in Zener regulator topology |
| Cathode (banded end) | Zener regulation output terminal | Provides stabilized 87 V output when biased positively relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Enables mechanical integrity and reliability under MIL-STD-883 vibration/shock testing |
| JANS qualification per MIL-PRF-19500/435 | Validates performance for spaceflight and nuclear-hardened systems requiring full screening |
| Low reverse leakage (≤10 nA) | Minimizes current error in high-resistance voltage dividers used for ADC reference scaling |
| Hermetic glass sealing | Prevents moisture ingress and parameter shift over decades in sealed enclosures |
| Radiation hardness (MicroNote 050) | Supports operation in total ionizing dose (TID) environments up to 100 krad(Si) |
Applications
| Aerospace Power Conditioning | Military Sensor Biasing |
|---|---|
Use Scenario: Regulating auxiliary supply rails in satellite power management units where input voltage varies widely due to solar array fluctuations. IC Role / Device Role / Timing Role: Zener diode providing fixed 87 V reference for overvoltage protection comparators and DC-DC feedback loops. Use Value: Stable breakdown voltage ensures consistent trip thresholds despite thermal cycling between –65 °C and +125 °C in orbit. | Use Scenario: Supplying bias voltage to radiation-tolerant photodiode arrays in battlefield optical sensors. IC Role / Device Role / Timing Role: High-reliability voltage reference establishing calibrated photocurrent measurement baseline. Use Value: ≤10 nA leakage prevents signal corruption in picoampere-level sensor outputs under extreme temperature gradients. |
| Nuclear Instrumentation | Avionics Test Equipment |
Use Scenario: Calibrating high-voltage pulse generators used in neutron detection front-end amplifiers. IC Role / Device Role / Timing Role: Precision Zener reference in metrology-grade voltage calibration chains. Use Value: +0.100 %/°C TC allows predictable correction over wide ambient ranges in uncooled reactor monitoring cabinets. | Use Scenario: Stabilizing reference nodes in portable flight control system BIT (Built-In Test) hardware. IC Role / Device Role / Timing Role: Voltage clamp protecting FPGA I/O during hot-swap power sequencing. Use Value: Hermetic DO-35 package withstands repeated thermal shock during field maintenance without parameter drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4133UR-1 | Same electrical specs; DO-213AA surface-mount package instead of DO-35 axial lead | Requires PCB rework for SMT assembly; eliminates through-hole mounting but reduces thermal resistance to ambient | Select for space-constrained boards needing automated placement and higher board density |
| 1N4133-1 (JANTXV grade) | Identical DO-35 package and Zener parameters; tighter screening and extended burn-in vs. standard 1N4133-1 | Used where enhanced reliability testing is mandated (e.g., DoD procurement contracts), not required for commercial industrial use | Select when JANTXV qualification documentation and traceability are contractually required |
Compared with 1N4133UR-1 and 1N4133-1 (JANTXV), the base 1N4133 offers optimal cost-performance balance for high-reliability axial-lead designs where manual or wave-solder assembly is acceptable and full JANTXV screening is unnecessary.
Availability
1N4133 is available at Aetrix Electronics and suitable for aerospace power conditioning, military sensor biasing, and nuclear instrumentation requiring stable component supply with full MIL-PRF-19500/435 traceability.
Supply support for 1N4133 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 defense, aerospace, and industrial markets.
The 1N4133 belongs to Microsemi's legacy 500 mW metallurgically bonded Zener diode family, engineered specifically for military and space applications demanding hermetic sealing, radiation tolerance, and extended temperature operation.
FAQ
What is the Zener voltage tolerance for 1N4133?
The 1N4133 has a nominal Zener voltage of 87 V with a standard tolerance of ±5%, as defined in the JEDEC-registered specification and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current. The 1N4133 does not include tighter 2% or 1% tolerance variants in its base nomenclature.
Is 1N4133 suitable for surface-mount assembly?
No - the standard 1N4133 is packaged in the axial-leaded DO-35 (DO-204AH) glass case and requires through-hole or axial mounting. For surface-mount use, Microsemi offers the 1N4133UR-1 variant in DO-213AA package. The 1N4133 itself is not rated for reflow or hand-soldering in SMT processes.
What is the maximum reverse leakage current for 1N4133?
The maximum reverse leakage current (IR) for 1N4133 is 10 nA, measured at VR = 69.6 V (0.8 × VZ). This value is specified in the Electrical Characteristics table on page 3 of the datasheet and reflects worst-case leakage under defined test conditions at 25 °C.
Does 1N4133 have radiation hardness certification?
Yes - the 1N4133 is inherently radiation hard as documented in Microsemi MicroNote 050, and its JANS-qualified versions are screened per MIL-PRF-19500/435 for total ionizing dose (TID) resilience. Radiation hardness is a core design feature of the metallurgically bonded glass construction used in the 1N4133.
What is the thermal resistance junction-to-lead for 1N4133?
The thermal resistance junction-to-lead (RθJL) for 1N4133 is 250 °C/W, measured with 3/8 inch (10 mm) lead length from the package body. This value is listed in the Maximum Ratings table on page 1 of T4-LDS-0245-2 Rev. 1 and informs heatsinking requirements for sustained 500 mW operation.
1N4133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
1N4133 FAQ
1.How can I place an order for 1N4133 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4133 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 1N4133 reliable?
The price and inventory of 1N4133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4133 is usually 5 days.
3.What payment methods are accepted for 1N4133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4133?
1N4133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4133 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 1N4133?
For technical support, including 1N4133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4133 requirements.
6.How does Aetrix verify that 1N4133 is sourced from the original manufacturer or authorized distributors?
All 1N4133 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 1N4133 meets industry standards.
7.What is the process for return or replacement of 1N4133?
All 1N4133 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4133, 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 1N4133 part is unused and in its original packaging.
Return procedure for 1N4133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4133 Tags
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