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Microchip Technology 1N4101UR/TR
- Part No.:
- 1N4101UR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4101UR/TR.pdf
- Description:
- DIODE ZENER 8.2V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:245
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Product details
Overview
1N4101UR/TR from Microsemi is a glass-encapsulated surface-mount Zener diode in DO-213AA (SOD-80/MELF) package, rated for 0.5 W steady-state power dissipation, with nominal Zener voltage 8.2 V ±5%, 250 mA test current, and 200 Ω maximum Zener impedance at 25 °C. It operates across -65 °C to +175 °C and serves as a precision voltage reference in low-power analog regulation circuits.
For engineers reviewing the 1N4101UR/TR datasheet, 1N4101UR/TR pinout, 1N4101UR/TR application, or 1N4101UR/TR equivalent, key selection criteria include its hermetically sealed MELF construction, low noise density (1 µV/√Hz), tight thermal resistance (150 °C/W junction-to-end-cap), RoHS-compliant e3 suffix, and tape-and-reel packaging (TR) for automated assembly.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown, with cathode band marking polarity and banded end held positive during regulation. Its Zener voltage exhibits a +0.048 %/°C temperature coefficient - positive and stable above 6 V - enabling predictable drift compensation in temperature-sensitive references.
The DO-213AA package provides hermetic glass sealing, ESD insensitivity per MIL-STD-750 Method 1020, and minimal parasitic capacitance (typical 46 pF at 8.2 V), supporting high-frequency stability in feedback and clamping applications where low noise and radiation hardness are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 8.2 V ±5% at 250 mA test current - defines regulated output level under standard bias conditions |
| Power Dissipation | 0.5 W at TEC < 100 °C - limits continuous thermal load on end-cap termination |
| Zener Impedance | 200 Ω max at IZT = 250 mA - determines regulation stiffness against load current variation |
| Reverse Leakage Current | 0.5 µA max at 6.24 V - ensures low quiescent error in high-impedance reference nodes |
| Noise Density | 1 µV/√Hz typical at 25 °C - critical for low-noise analog references and sensor signal conditioning |
| Operating Temperature | -65 °C to +175 °C - supports aerospace, downhole, and military-grade thermal environments |
| Thermal Resistance | 150 °C/W junction-to-end-cap - enables direct thermal path design using end-cap solder pads |
Pinout & Package
DO-213AA (SOD-80/MELF) hermetically sealed glass package with axial symmetry and cathode band marking. No discrete pins - terminals are metallized end caps; polarity observed by band placement (banded end = cathode = positive during Zener operation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode End Cap (banded) | Zener cathode | Connected to higher potential node; regulates voltage when reverse-biased |
| Anode End Cap (unbanded) | Zener anode | Connected to lower potential node; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Enables long-term reliability in harsh environments without moisture ingress or parameter drift |
| Low noise density (1 µV/√Hz) | Minimizes added noise in precision reference and instrumentation amplifier feedback paths |
| Positive tempco (+0.048 %/°C) | Allows predictable voltage shift with temperature - usable for drift compensation in matched pairs |
| RoHS-compliant e3 finish | Tin-plated end caps meet lead-free soldering requirements without compromising solderability |
| ESD-insensitive per MIL-STD-750 | Eliminates need for handling precautions in production; suitable for unshielded assembly lines |
Applications
| Industrial Sensor Reference | Aerospace Power Monitoring |
|---|---|
Use Scenario: Stable 8.2 V reference for RTD or strain gauge bridge excitation in factory-floor temperature transmitters. IC Role / Device Role / Timing Role: Two-terminal Zener voltage reference providing fixed bias point independent of supply ripple. Use Value: Low 1 µV/√Hz noise ensures sub-0.01% measurement accuracy; hermetic seal prevents calibration drift in humid enclosures. |
Use Scenario: Overvoltage clamp in satellite power bus monitoring circuit exposed to wide thermal swings (-55 °C to +125 °C). IC Role / Device Role / Timing Role: Reverse-biased Zener regulating comparator input threshold against bus transients. Use Value: Radiation-hardened structure and -65 °C to +175 °C rating ensure functional integrity in orbital radiation and thermal vacuum environments. |
| Medical Instrumentation Bias | Downhole Oilfield Electronics |
Use Scenario: Precision bias source for op-amp input stages in portable ECG front-ends requiring ultra-low-noise DC offsets. IC Role / Device Role / Timing Role: Low-noise Zener reference stabilizing gain-setting networks and ADC reference buffers. Use Value: 200 Ω ZZT and 0.5 µA leakage maintain offset stability under varying load currents, reducing calibration frequency. |
Use Scenario: Voltage reference in high-temperature logging tools deployed at >150 °C wellbore depths. IC Role / Device Role / Timing Role: Primary regulation element in local LDO pre-regulator stage feeding ASICs. Use Value: 150 °C/W junction-to-end-cap thermal resistance allows direct mounting to heat-sinking metal housings, sustaining regulation at 175 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C8V2 | Surface-mount SOT-23 package; 350 mW rating; 8.2 V ±5%; 80 Ω ZZT; higher capacitance (~90 pF) | Higher power density but lower thermal robustness; not rated beyond +150 °C | Select for cost-sensitive consumer designs where board space is constrained and full military temp range is unnecessary |
| 1N4734A | Through-hole DO-41 package; 1 W rating; 8.2 V ±5%; 7 Ω ZZT; 500 pF capacitance; no RoHS e3 option | Superior regulation stiffness but larger footprint and no high-temp qualification | Select for prototyping or legacy industrial systems requiring higher power margin and manual assembly compatibility |
Compared with BZX84-C8V2 and 1N4734A, the 1N4101UR/TR delivers superior high-temperature endurance (-65 °C to +175 °C), hermetic reliability, and low-noise performance - making it optimal for mission-critical analog references where environmental resilience outweighs raw Zener impedance minimization.
Availability
1N4101UR/TR is available at Aetrix Electronics and suitable for industrial sensor reference, aerospace power monitoring, and medical instrumentation bias applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1N4101UR/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 analog, RF, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N4101UR/TR belongs to Microsemi's legacy DO-213AA glass Zener family, engineered for extreme-temperature stability, hermetic integrity, and low-noise voltage regulation in safety-critical analog subsystems.
FAQ
What is the Zener voltage tolerance for 1N4101UR/TR?
The 1N4101UR/TR has a nominal Zener voltage of 8.2 V with a standard tolerance of ±5%, as specified in the Microsemi datasheet. This tolerance applies to devices without additional suffixes; tighter tolerances (±2% or ±1%) require C or D suffixes respectively, which are not present in the TR-suffixed commercial version.
Does 1N4101UR/TR support lead-free soldering processes?
Yes, the 1N4101UR/TR carries the "e3" suffix indicating RoHS compliance and annealed matte-tin plating on end caps, qualified for lead-free reflow up to 260 °C for 10 seconds per MIL-STD-750 Method 2026 - fully compatible with standard Pb-free assembly lines.
What is the maximum reverse leakage current for 1N4101UR/TR at rated voltage?
At 6.24 V (76% of nominal 8.2 V), the 1N4101UR/TR exhibits a maximum reverse leakage current of 0.5 µA, per the Microsemi electrical characteristics table. This low leakage ensures minimal error current in high-impedance reference divider networks.
Can 1N4101UR/TR be used in high-radiation environments?
Yes, the 1N4101UR/TR is inherently radiation-hardened as documented in Microsemi MicroNote 050, making it suitable for space-grade and nuclear instrumentation applications where total ionizing dose (TID) resilience is required without derating.
What does the "TR" suffix indicate in 1N4101UR/TR?
The "TR" suffix in 1N4101UR/TR denotes tape-and-reel packaging per EIA-481-1-A standard: 12 mm carrier tape, 2000 units per 7-inch reel. This format enables automated pick-and-place assembly and is distinct from bulk or ammo-pack options.
1N4101UR/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):
- 8.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6.24 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
1N4101UR/TR FAQ
1.How can I place an order for 1N4101UR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4101UR/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 1N4101UR/TR reliable?
The price and inventory of 1N4101UR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4101UR/TR is usually 5 days.
3.What payment methods are accepted for 1N4101UR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4101UR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4101UR/TR?
1N4101UR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4101UR/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 1N4101UR/TR?
For technical support, including 1N4101UR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4101UR/TR requirements.
6.How does Aetrix verify that 1N4101UR/TR is sourced from the original manufacturer or authorized distributors?
All 1N4101UR/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 1N4101UR/TR meets industry standards.
7.What is the process for return or replacement of 1N4101UR/TR?
All 1N4101UR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4101UR/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 1N4101UR/TR part is unused and in its original packaging.
Return procedure for 1N4101UR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4101UR/TR Tags
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