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Microchip Technology 1N4134UR-1/TR
- Part No.:
- 1N4134UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4134UR-1/TR.pdf
- Description:
- DIODE ZENER 91V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,919
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Product details
Overview
1N4134UR-1/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 of 91 V ±5%, 250 mA test current, and 1200 Ω dynamic impedance at IZT. It operates across –65 °C to +175 °C and is used for precision voltage regulation in high-reliability power supply feedback loops.
For engineers reviewing the 1N4134UR-1/TR datasheet, 1N4134UR-1/TR pinout, 1N4134UR-1/TR application, or 1N4134UR-1/TR equivalent, key selection criteria include Zener voltage tolerance, temperature coefficient (+0.095 %/°C), low noise density (1 µV/√Hz), hermetic glass sealing, and compatibility with automated SMT assembly using EIA-481-1-A tape-and-reel packaging.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown mode. Its Zener regulation is stable over wide current (250 mA IZT, up to 40 mA IZM) and temperature (–65 °C to +175 °C) ranges, with minimal capacitance (<5.1 pF typical at 91 V) and low noise density (1 µV/√Hz).
The DO-213AA package features metallurgically bonded end caps, RoHS-compliant matte-tin plating, and is qualified per MIL-STD-750 Method 1020 for ESD insensitivity. The "-1" suffix denotes internal metallurgical bond construction, and "TR" indicates 12 mm tape, 2000 units per 7-inch reel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 91 V ±5% - defines regulated output voltage under 250 mA test current at 25 °C |
| Zener Test Current | 250 mA - establishes stable regulation point and thermal equilibrium condition |
| Zener Impedance | 1200 Ω - limits voltage variation under load current changes; critical for regulation accuracy |
| Power Dissipation | 0.5 W at TEC < 100 °C - sets maximum continuous power handling on FR4 board with recommended footprint |
| Operating Temperature | –65 °C to +175 °C - enables use in aerospace, downhole, and military environments |
| Noise Density | 1 µV/√Hz - supports low-noise analog references and precision feedback circuits |
| Temp. Coefficient | +0.095 %/°C - quantifies voltage drift with temperature; essential for thermal stability design |
Pinout & Package
DO-213AA (SOD-80 / MELF) hermetically sealed glass package with axial symmetry and cathode band marking. End-cap terminations provide low thermal resistance (150 °C/W junction-to-end-cap) and solderable matte-tin finish compliant with MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to positive side of load during Zener operation; polarity must be observed to avoid forward conduction |
| Anode (unbanded end) | Reference return node | Connected to circuit ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass seal | Prevents moisture ingress and long-term parameter drift in harsh environments |
| Internal metallurgical bond (-1 suffix) | Enhances mechanical robustness and thermal cycling reliability vs. standard solder bond |
| Low noise density (1 µV/√Hz) | Minimizes ripple injection into sensitive analog control loops and reference paths |
| ESD insensitivity (MIL-STD-750 Method 1020) | Eliminates need for external ESD protection in handling and assembly |
| Tape-and-reel packaging (TR suffix) | Enables direct placement via high-speed pick-and-place machines with 2000 units per 7″ reel |
Applications
| Switch-Mode Power Supply Feedback | Aerospace Voltage Reference |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converter feedback network using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Zener diode provides precise 91 V reference threshold for TL431-like shunt regulator stage. Use Value: Stable 91 V Zener voltage ensures consistent output regulation across –55 °C to +125 °C ambient, meeting MIL-PRF-38534 Class H requirements. | Use Scenario: Supplies stable bias voltage to radiation-hardened op-amp input stage in satellite telemetry conditioning circuit. IC Role / Device Role / Timing Role: Functions as primary voltage reference in analog signal chain where long-term drift must be <100 ppm/1000 hrs. Use Value: Hermetic DO-213AA package and inherent radiation hardness (MicroNote 050) ensure parametric stability in total ionizing dose (TID) >100 krad(Si) environments. |
| Industrial Sensor Excitation | High-Temperature Downhole Monitoring |
Use Scenario: Provides excitation voltage for 4–20 mA loop-powered pressure transducer in oil refinery control cabinet. IC Role / Device Role / Timing Role: Zener diode regulates 91 V supply to bridge driver IC powering Wheatstone bridge sensor. Use Value: 0.5 W power rating and +0.095 %/°C tempco enable stable excitation across –40 °C to +85 °C without active compensation. | Use Scenario: Stabilizes reference voltage for ADC front-end in geothermal well logging tool exposed to 175 °C ambient. IC Role / Device Role / Timing Role: Acts as temperature-stable voltage clamp protecting downstream analog interface from transient overvoltage. Use Value: Guaranteed operation to +175 °C and 150 °C/W junction-to-end-cap thermal resistance allow direct mounting to heat-sinked metal housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4134UR-1 | No TR suffix; bulk packaging only; identical electrical specs and DO-213AA package | Not suitable for automated SMT line feed; requires manual or tube-based placement | Select 1N4134UR-1/TR when tape-and-reel delivery and machine assembly are required |
| MLL4134 | Same Zener voltage (91 V), tolerance, and DO-213AA package; Microsemi's alternate part numbering scheme | Identical performance and form factor; differs only in marking convention and ordering channel | MLL4134 is functionally interchangeable but may require procurement alignment with legacy BOMs or distributor stock |
Compared with 1N4134UR-1/TR, the 1N4134UR-1 lacks tape-and-reel support and requires manual handling, while MLL4134 offers identical regulation performance but uses Microsemi's MLL-series designation-both alternatives retain the same 91 V Zener voltage, +0.095 %/°C tempco, and DO-213AA package for drop-in compatibility in existing layouts.
Availability
1N4134UR-1/TR is available at Aetrix Electronics and suitable for switch-mode power supplies, aerospace voltage references, and high-temperature industrial monitoring requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for 1N4134UR-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 (now part of Microchip Technology) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N4134UR-1/TR belongs to Microsemi's DO-213AA glass Zener family, engineered for precision voltage regulation in extreme-temperature and radiation-exposed applications where hermeticity and long-term stability are mandatory.
FAQ
What is the Zener voltage tolerance for 1N4134UR-1/TR?
The 1N4134UR-1/TR has a nominal Zener voltage of 91 V with a standard tolerance of ±5%, as specified in the Microsemi datasheet. No suffix indicates this default tolerance; tighter tolerances (±2% or ±1%) would require C or D suffixes respectively, which are not present in this part number.
Does 1N4134UR-1/TR support automated SMT assembly?
Yes, the "TR" suffix in 1N4134UR-1/TR confirms EIA-481-1-A compliant tape-and-reel packaging: 12 mm carrier tape, 2000 units per 7-inch reel. This enables direct integration into high-speed pick-and-place equipment without manual handling or repackaging.
What is the maximum Zener current (IZM) for 1N4134UR-1/TR?
The maximum DC Zener current for 1N4134UR-1/TR is 40 mA, derived from its 0.5 W power rating and 91 V Zener voltage (P = V × I → I = 0.5 W / 91 V ≈ 5.5 mA), but the datasheet specifies IZM = 40 mA at 25 °C ambient with proper thermal management on FR4 board per Figure 2 derating curve.
Is 1N4134UR-1/TR suitable for high-temperature operation?
Yes, 1N4134UR-1/TR is rated for continuous operation from –65 °C to +175 °C. Its DO-213AA glass package and internal metallurgical bond (-1) construction ensure parametric stability and mechanical integrity at elevated temperatures, making it suitable for downhole and avionics applications.
What does the "-1" suffix mean in 1N4134UR-1/TR?
The "-1" suffix in 1N4134UR-1/TR denotes internal metallurgical bond construction between the silicon die and end caps-distinct from standard solder bonding. This improves thermal cycling endurance and mechanical reliability, especially under shock/vibration or rapid temperature transients.
1N4134UR-1/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):
- 91 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 69.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4134UR-1/TR FAQ
1.How can I place an order for 1N4134UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4134UR-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 1N4134UR-1/TR reliable?
The price and inventory of 1N4134UR-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 1N4134UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4134UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4134UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4134UR-1/TR?
1N4134UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4134UR-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 1N4134UR-1/TR?
For technical support, including 1N4134UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4134UR-1/TR requirements.
6.How does Aetrix verify that 1N4134UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4134UR-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 1N4134UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4134UR-1/TR?
All 1N4134UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4134UR-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 1N4134UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4134UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4134UR-1/TR Tags
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