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Microchip Technology 1N4133UR/TR
- Part No.:
- 1N4133UR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4133UR/TR.pdf
- Description:
- DIODE ZENER 87V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,872
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Product details
Overview
1N4133UR/TR from Microsemi is a glass-encapsulated surface-mount Zener diode with 87 V nominal Zener voltage, 0.5 W power rating, ±5% voltage tolerance (no suffix), 250 mA Zener test current, and DO-213AA (SOD-80/MLL34) MELF package. It regulates voltage in precision reference and overvoltage protection circuits across industrial temperature ranges.
For engineers reviewing the 1N4133UR/TR datasheet, 1N4133UR/TR pinout, 1N4133UR/TR application, or 1N4133UR/TR equivalent, key selection factors include Zener voltage stability over temperature (αVZ = +0.095 %/°C), low reverse leakage (≤0.01 μA at VR), hermetic glass sealing, and RoHS-compliant e3 marking with TR tape-and-reel packaging.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in silicon. Its Zener impedance of 1000 Ω at 250 mA ensures stable regulation under varying load conditions, and its thermal resistance of 150 °C/W (junction-to-end-cap) supports reliable operation up to +175 °C storage temperature.
The cathode band indicates polarity for reverse-bias operation, and its minimal capacitance (≈5.1 pF, typical per Figure 3) enables use in high-frequency stabilization and noise-sensitive analog references without signal coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 87 V ±5% at 250 mA - sets precise clamping threshold for overvoltage protection |
| Power Dissipation | 0.5 W at TEC < 100 °C - defines maximum continuous thermal load on end cap |
| Zener Impedance ZZT | 1000 Ω at IZT = 250 mA - determines output voltage deviation under load transients |
| Reverse Leakage IR | ≤0.01 μA at rated VR - ensures negligible standby current in high-impedance bias networks |
| Noise Density | 1 μV/√Hz at IZT - supports low-noise voltage references in instrumentation amplifiers |
| Temp. Coefficient αVZ | +0.095 %/°C - quantifies positive drift with temperature, critical for wide-range stability |
| Package | DO-213AA (SOD-80/MLL34) - hermetically sealed glass MELF for moisture resistance and reliability |
Pinout & Package
Two-terminal device in DO-213AA (SOD-80/MLL34) glass MELF package. Cathode identified by single dark band; anode is unmarked end. Mounted with banded end positive relative to opposite end during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to system rail requiring stable reference; reverse-biased during operation |
| Anode (unmarked end) | Reference ground/reference return | Typically tied to circuit common or bias source; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass seal | Prevents moisture ingress and long-term parameter drift in harsh environments |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling |
| Radiation-hardened construction | Inherently radiation-tolerant per MicroNote 050 - suitable for space-qualified subsystems |
| RoHS-compliant finish | Tin-plated end caps per MIL-STD-750 Method 2026 - meets environmental compliance without solderability loss |
| Stable regulation over -65°C to +175°C | Enables deployment in downhole, aerospace, and military electronics without derating penalties |
Applications
| High-Voltage Power Supply Reference | Overvoltage Clamp in Industrial PLC Inputs |
|---|---|
Use Scenario: Stabilizing feedback divider in 100 V DC-DC converter output stage. IC Role / Device Role / Timing Role: Zener reference providing fixed 87 V threshold to error amplifier input. Use Value: Maintains ±0.5% output regulation despite line/load variation and 100 °C ambient rise. | Use Scenario: Protecting 24 V digital input channel against 100 V surge events. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting transient voltage to ≤87 V. Use Value: Absorbs 0.5 W surge energy without degradation, preserving downstream optocoupler integrity. |
| Precision Analog Sensor Biasing | Aerospace Voltage Monitor Reference |
Use Scenario: Generating stable bias for high-impedance piezoresistive pressure sensor bridge. IC Role / Device Role / Timing Role: Low-noise (1 μV/√Hz), low-leakage (0.01 μA) reference source. Use Value: Enables 16-bit measurement resolution by minimizing offset drift and Johnson noise contribution. | Use Scenario: Calibrating voltage monitor in satellite power distribution unit operating at -55°C to +125°C. IC Role / Device Role / Timing Role: Radiation-hardened, temperature-stable Zener reference traceable to flight-grade specs. Use Value: Delivers <±0.2% total error over full temperature range without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C82LT1G | 82 V nominal, SOT-23 package, 350 mW rating, ±5% tolerance, higher ZZT (1200 Ω) | Suitable for PCB space-constrained designs but lacks hermetic seal and radiation hardness | Select when board area is critical and environmental stress is low; not for aerospace or high-reliability use |
| 1N4743A | 13 V nominal, DO-41 axial package, 1 W rating, ±5% tolerance, lower temp coefficient (0.055 %/°C) | Higher power and axial form factor; incompatible voltage level and mounting method | Choose only for 13 V reference needs with through-hole assembly; not a functional substitute for 87 V requirement |
Compared with BZX84-C82LT1G and 1N4743A, the 1N4133UR/TR uniquely delivers 87 V regulation in a hermetically sealed, radiation-tolerant MELF package with validated performance from -65°C to +175°C - essential for mission-critical voltage referencing where reliability outweighs cost or footprint.
Availability
1N4133UR/TR is available at Aetrix Electronics and suitable for high-voltage reference design, industrial overvoltage protection, and aerospace sensor biasing requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N4133UR/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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and high-voltage analog components for defense, aerospace, and industrial markets.
The 1N4133UR/TR belongs to Microsemi's legacy DO-213AA glass Zener family, engineered for precision voltage regulation in extreme environments where hermeticity, temperature stability, and long-term parametric consistency are mandatory.
FAQ
What is the Zener voltage tolerance for 1N4133UR/TR?
The 1N4133UR/TR has a nominal Zener voltage of 87 V with a standard tolerance of ±5%, as indicated by the absence of C (±2%) or D (±1%) suffix. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current, per JEDEC registration and Microsemi datasheet Rev D.
Is 1N4133UR/TR RoHS compliant?
Yes, the "e3" suffix in 1N4133UR/TR denotes RoHS compliance, with annealed matte-tin plating on end caps per MIL-STD-750 Method 2026. The device meets lead-free soldering requirements including 260 °C for 10 seconds, and is documented in Microsemi's official datasheet as RoHS-compliant.
What does the "TR" suffix mean in 1N4133UR/TR?
The "TR" suffix indicates tape-and-reel packaging per EIA-481-1-A standard: 12 mm carrier tape, 2000 units per 7-inch reel. This format supports automated SMT placement and is specified in the Microsemi datasheet for all UR-series Zeners requiring volume production handling.
Can 1N4133UR/TR replace 1N4133UR in a design?
Yes - 1N4133UR/TR is functionally identical to 1N4133UR except for packaging: both share identical electrical parameters, DO-213AA package, and Zener characteristics. The "TR" adds tape-and-reel delivery; no circuit or layout changes are needed when substituting 1N4133UR/TR for 1N4133UR in SMT assembly.
What is the maximum operating temperature for 1N4133UR/TR?
The 1N4133UR/TR is rated for operating and storage temperatures from -65 °C to +175 °C. Its thermal resistance is 150 °C/W junction-to-end-cap, and full 0.5 W power dissipation is guaranteed only when end-cap temperature remains below 100 °C, per derating curve in Figure 2 of the Microsemi datasheet.
1N4133UR/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 87 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1000 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 66.12 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4133UR/TR FAQ
1.How can I place an order for 1N4133UR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4133UR/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 1N4133UR/TR reliable?
The price and inventory of 1N4133UR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4133UR/TR is usually 5 days.
3.What payment methods are accepted for 1N4133UR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4133UR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4133UR/TR?
1N4133UR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4133UR/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 1N4133UR/TR?
For technical support, including 1N4133UR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4133UR/TR requirements.
6.How does Aetrix verify that 1N4133UR/TR is sourced from the original manufacturer or authorized distributors?
All 1N4133UR/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 1N4133UR/TR meets industry standards.
7.What is the process for return or replacement of 1N4133UR/TR?
All 1N4133UR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4133UR/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 1N4133UR/TR part is unused and in its original packaging.
Return procedure for 1N4133UR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4133UR/TR Tags
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