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Microchip Technology 1N4701UR-1/TR
- Part No.:
- 1N4701UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4701UR-1/TR.pdf
- Description:
- DIODE ZENER 14V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,208
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Product details
Overview
1N4701UR-1/TR from Microsemi is a 14.0 V, ±5% tolerance, 500 mW surface-mount Zener diode in DO-213AA (SOD-80/MLL34) MELF package, tested at 50 µA Zener current, with 0.14 V voltage regulation and 0.05 µA reverse leakage at 10.6 V, used for precision voltage reference and low-power regulation in space-constrained industrial power supplies.
For engineers reviewing the 1N4701UR-1/TR datasheet, 1N4701UR-1/TR pinout, 1N4701UR-1/TR application, or 1N4701UR-1/TR equivalent, key selection criteria include its hermetically sealed glass construction, metallurgically bonded die, MIL-PRF-19500 up-screening capability, RoHS-compliant commercial version, and minimal 1.5 pF capacitance at zero bias - critical for noise-sensitive analog references and radiation-tolerant designs.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across wide temperature (–65°C to +175°C) and current ranges, with thermal resistance junction-to-end cap of 100°C/W and junction-to-ambient of 250°C/W on FR4 board. Its low 50 µA test current enables ultra-low-power biasing in battery-backed circuits.
The DO-213AA package uses end-cap terminations with tin-lead or matte-tin plating, cathode marked by band, and polarity defined for banded-end-positive operation. It delivers inherent radiation hardness per MicroNote 050 and ESD immunity per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.0 V at 50 µA - defines precise regulation point for low-current reference circuits |
| Power Dissipation (PD) | 0.5 W - supports continuous operation up to 35 mA at 14 V without derating below 50°C ambient |
| Voltage Regulation (∆VZ) | 0.14 V - indicates tight knee behavior between 10 µA and 100 µA, enabling stable low-current regulation |
| Reverse Leakage (IR) | 0.05 µA at 10.6 V - ensures negligible error current in high-impedance bias networks |
| Forward Voltage (VF) | 1.5 V at 100 mA - confirms standard silicon PN junction behavior for forward conduction checks |
| Junction Temperature Range | –65°C to +175°C - enables deployment in extended-temperature industrial, aerospace, and downhole systems |
Pinout & Package
DO-213AA (SOD-80 / MLL34) hermetically sealed glass MELF package with axial end-cap terminals; cathode indicated by colored band; polarity requires banded end to be positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node when regulating reverse voltage |
| Cathode | Banded end | Connected to regulated voltage rail; must be held positive relative to anode for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in harsh environments |
| Metallurgical die bonding | Eliminates wire bonds to enhance reliability and thermal stability under thermal cycling |
| MIL-PRF-19500 up-screening option | Enables qualification for military/aerospace applications with traceable lot-level screening data |
| Low 1.5 pF capacitance | Minimizes high-frequency loading in RF detector and timing reference circuits |
| Non-ESD-sensitive design | Withstands handling without protection circuitry per MIL-STD-750 Method 1020 |
Applications
| Industrial Sensor Signal Conditioning | Space-Qualified Power Monitor Reference |
|---|---|
Use Scenario: Providing stable 14 V reference for 4–20 mA transmitter front-end op-amps in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision shunt voltage reference establishing fixed bias point for instrumentation amplifiers. Use Value: ±5% tolerance and <0.14 V regulation shift ensure ≤0.2% full-scale error over 0–70°C operating range. |
Use Scenario: Serving as primary voltage reference in radiation-hardened DC-DC converter feedback loop aboard LEO satellites. IC Role / Device Role / Timing Role: Radiation-tolerant Zener regulator maintaining feedback divider accuracy despite TID exposure. Use Value: Inherent radiation hardness per MicroNote 050 and hermetic seal prevent parametric degradation after 100 krad(Si). |
| Low-Power Battery Backup Circuit | Medical Infusion Pump Voltage Clamp |
Use Scenario: Clamping backup supply rail to 14 V during main power failure in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-current Zener clamp limiting supercapacitor discharge voltage to protect downstream regulators. Use Value: 50 µA test current enables regulation with <1 µA standby current draw, extending battery life by >12 months. |
Use Scenario: Stabilizing microcontroller I/O rail against transient spikes during motor actuation in Class II medical devices. IC Role / Device Role / Timing Role: Transient-suppressing shunt regulator protecting ADC inputs from ESD-induced latch-up. Use Value: 0.05 µA leakage at 10.6 V prevents false triggering while 1.5 pF capacitance avoids signal distortion at 10 kHz sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4701A | Same 14 V nominal Zener voltage but in DO-41 through-hole package; ±5% tolerance; 1.0 W power rating | Requires PCB through-hole mounting and larger board area; higher power allows >70 mA regulation current | Select when mechanical robustness or higher dissipation is prioritized over size and surface-mount compatibility |
| BZX55C14 | 14 V Zener in DO-35 glass package; ±5% tolerance; 500 mW rating; 5 mA test current; higher 100 nA leakage at 11.2 V | Larger footprint than DO-213AA; less suitable for high-reliability or radiation-exposed environments | Choose for cost-sensitive commercial designs where hermetic sealing and MIL-PRF-19500 screening are not required |
Compared with 1N4701A and BZX55C14, the 1N4701UR-1/TR offers superior space efficiency via MELF SMD packaging, guaranteed hermeticity, and radiation tolerance - making it optimal for miniaturized, mission-critical, or extended-temperature deployments where reliability outweighs cost or power headroom.
Availability
1N4701UR-1/TR is available at Aetrix Electronics and suitable for industrial sensor conditioning, space-grade power monitoring, and medical infusion pump voltage clamping requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for 1N4701UR-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, radiation-hardened, and aerospace-grade components.
The 1N4701UR-1/TR belongs to Microsemi's legacy 1N4678UR-1 to 1N4717UR-1 Zener series, engineered for precision voltage regulation in mission-critical systems where hermetic integrity, low-leakage performance, and extended temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N4701UR-1/TR?
The 1N4701UR-1/TR has a nominal Zener voltage of 14.0 V with a standard tolerance of ±5%, as confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0240-1 Rev. 2. Tighter 2% (C suffix) and 1% (D suffix) tolerance variants are available upon request, but the base 1N4701UR-1/TR part carries the ±5% specification.
Is the 1N4701UR-1/TR RoHS compliant?
Yes, the 1N4701UR-1/TR is available in RoHS-compliant form with matte-tin plating on its end caps, designated by the "e3" suffix in the part nomenclature. RoHS compliance applies only to the commercial-grade version; up-screened versions per MIL-PRF-19500 retain tin-lead plating unless otherwise specified.
What does the "TR" suffix indicate in 1N4701UR-1/TR?
The "TR" suffix denotes tape-and-reel packaging per EIA-481-1-B standard, enabling automated SMT placement. This is a packaging option - not a functional variant - and does not affect electrical specifications. The "UR-1" portion identifies the metallurgically bonded, surface-mount DO-213AA construction.
Can the 1N4701UR-1/TR be used in radiation-intensive environments?
Yes, the 1N4701UR-1/TR exhibits inherent radiation hardness as documented in Microsemi's MicroNote 050. Its hermetically sealed glass package and metallurgically bonded die structure provide proven resilience to total ionizing dose (TID), making it suitable for low-earth orbit satellite power monitors and nuclear instrumentation systems.
What is the maximum steady-state power dissipation for the 1N4701UR-1/TR?
The 1N4701UR-1/TR is rated for 0.5 W steady-state power dissipation at end-cap temperature (TEC) < 125°C or ambient temperature (TA) < 50°C on FR4 board with 1 oz copper. Derating begins linearly above these temperatures, reaching zero dissipation at 175°C junction temperature per the power derating curve on page 4.
1N4701UR-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):
- 14 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 100 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4701UR-1/TR FAQ
1.How can I place an order for 1N4701UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4701UR-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 1N4701UR-1/TR reliable?
The price and inventory of 1N4701UR-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 1N4701UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4701UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4701UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4701UR-1/TR?
1N4701UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4701UR-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 1N4701UR-1/TR?
For technical support, including 1N4701UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4701UR-1/TR requirements.
6.How does Aetrix verify that 1N4701UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4701UR-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 1N4701UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4701UR-1/TR?
All 1N4701UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4701UR-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 1N4701UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4701UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4701UR-1/TR Tags
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BZT52C5V6T-7
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MM5Z5V1ST1G
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