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Microchip Technology 1N4698UR-1
- Part No.:
- 1N4698UR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4698UR-1.pdf
- Description:
- DIODE ZENER 11V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,483
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Product details
Overview
1N4698UR-1 from Microsemi is a 500 mW surface-mount Zener diode in DO-213AA (SOD80/MLL34) MELF package, rated for 11.0 V nominal Zener voltage at 50 µA test current, ±5% tolerance, with 0.11 V regulation change between 10 µA and 100 µA. It operates across –65 °C to +175 °C junction temperature and is used for precision low-current voltage reference and regulation in space-constrained analog circuits.
For engineers reviewing the 1N4698UR-1 datasheet, 1N4698UR-1 pinout, 1N4698UR-1 application, or 1N4698UR-1 equivalent, key selection criteria include its ultra-low Zener test current (50 µA), hermetically sealed glass construction, metallurgically bonded die, minimal capacitance (<1.5 pF), and MIL-PRF-19500 up-screening capability for high-reliability programs.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown, where regulation stability relies on controlled avalanche conduction at precisely defined current and temperature conditions. Its 50 µA test current enables stable operation in micropower circuits, while the metallurgical bond between silicon die and metal end caps ensures thermal robustness and long-term parameter stability under thermal cycling.
The DO-213AA package provides hermetic sealing and low parasitic capacitance-critical for noise-sensitive references-and supports solder reflow per MIL-STD-750 Method 2026. Voltage regulation performance is specified at 25 °C with 20-second thermal stabilization, and derating begins above 50 °C ambient or 125 °C end-cap temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.0 V at IZT = 50 µA - defines precise regulation point for low-power biasing and reference generation |
| Zener Tolerance | ±5% - standard grade; tighter 2% (C) or 1% (D) options available per part nomenclature |
| Voltage Regulation (∆VZ) | 0.11 V - difference between VZ at 100 µA and 10 µA, indicating low dynamic impedance in microcurrent range |
| Max Reverse Leakage (IR) | 0.05 µA at VR = 8.4 V - ensures negligible error current in high-impedance reference nodes |
| Power Dissipation (PD) | 0.5 W - rated at TEC < 125 °C or TA < 50 °C on FR4 board with 1 oz Cu |
| Junction Temperature Range | –65 °C to +175 °C - supports operation in extreme environments including aerospace and downhole instrumentation |
| Thermal Resistance (RθJA) | 250 °C/W - determines required board copper area and airflow for thermal management |
Pinout & Package
DO-213AA (SOD80/MLL34) MELF glass package: hermetically sealed, cylindrical, axial-symmetrical with metallized end caps. Cathode indicated by single black band; banded end is positive during Zener operation. Weight: 0.04 g. RoHS-compliant matte-tin plating available (commercial grade only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; forms low-impedance return path for Zener current |
| Cathode (banded end) | Regulated output node | Provides stable 11.0 V relative to anode when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded die | Eliminates wire bonds and interfacial delamination risk, enabling >106 thermal cycles without parameter shift |
| Hermetic glass seal | Prevents moisture ingress and corrosion, supporting 20+ year shelf life and reliability in humid or sealed enclosures |
| Ultra-low test current (50 µA) | Enables use in battery-powered sensor front-ends and micropower LDO feedback networks without loading error |
| MIL-PRF-19500 up-screening option | Available with screening levels MQ (JAN), MX (JANTX), MV (JANTXV), MSP (JANS) for space, defense, and nuclear applications |
| Low capacitance (<1.5 pF) | Minimizes high-frequency coupling into reference nodes-critical for ADC reference buffers and RF bias networks |
Applications
| Medical Sensor Calibration | Avionics Power Monitoring |
|---|---|
Use Scenario: Calibrating 16-bit delta-sigma ADCs in portable ECG monitors using a ratiometric reference architecture. IC Role / Device Role / Timing Role: Precision 11.0 V Zener reference establishing absolute voltage scale for analog front-end gain and offset correction. Use Value: 0.11 V regulation spread over 10× current range ensures <0.1% full-scale error contribution across battery discharge cycle. |
Use Scenario: Monitoring 28 V aircraft bus voltage via resistive divider feeding a microcontroller ADC input. IC Role / Device Role / Timing Role: Stable 11.0 V clamp protecting ADC input from transients while providing known reference for ratio-based measurement. Use Value: Hermetic DO-213AA package withstands vibration and humidity; 175 °C max junction temp supports engine bay proximity mounting. |
| Satellite Payload Telemetry | Industrial Process Controller |
Use Scenario: Biasing radiation-hardened op-amps in low-noise telemetry amplifiers aboard LEO satellites. IC Role / Device Role / Timing Role: Low-capacitance (1.5 pF), low-leakage (0.05 µA) voltage reference minimizing signal distortion and power drain. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in TID environments up to 100 krad(Si). |
Use Scenario: Providing stable reference for 4–20 mA loop transmitter DACs in hazardous-area process transmitters. IC Role / Device Role / Timing Role: Primary voltage reference for current-loop output stage, operating continuously at 75 °C ambient. Use Value: Metallurgical bond and –65 °C to +175 °C rating ensure zero drift over 15-year field life in oil & gas control cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4698US-1 (Microsemi) | Same electrical specs but in DO-35 (through-hole) package; no MELF form factor | Requires PCB through-hole footprint; unsuitable for automated SMT assembly or high-density layouts | Select when legacy through-hole design or manual prototyping is required |
| BZX55C11 (ON Semiconductor) | 11 V, ±5%, 500 mW, DO-35; higher leakage (5 µA @ 8.4 V) and larger ∆VZ (0.25 V) | Lacks hermetic seal and metallurgical bonding; not qualified to MIL-PRF-19500 | Acceptable for commercial-grade industrial controls where cost outweighs long-term stability |
Compared with 1N4698UR-1, the 1N4698US-1 offers identical regulation performance but requires through-hole assembly, while BZX55C11 trades lower cost for reduced reliability, higher leakage, and non-hermetic construction-making 1N4698UR-1 the only choice for high-stability, high-reliability, or space-constrained SMT designs.
Availability
1N4698UR-1 is available at Aetrix Electronics and suitable for medical sensor calibration, avionics power monitoring, satellite telemetry, and industrial process control requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N4698UR-1 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 precision analog components for aerospace, defense, and industrial markets.
The 1N4678UR-1 through 1N4717UR-1 series was designed to deliver JEDEC-standard Zener performance in hermetic MELF packages with metallurgical bonding-targeting applications demanding long-term stability, low leakage, and operation in extreme thermal or radiation environments.
FAQ
What is the Zener voltage tolerance for 1N4698UR-1 as shipped?
The 1N4698UR-1 is manufactured with a standard ±5% Zener voltage tolerance at 50 µA test current. Tighter tolerances-2% (marked with 'C') and 1% (marked with 'D')-are available as configurable options per the part nomenclature guide; the base 1N4698UR-1 carries the default 5% band without additional suffix.
Can 1N4698UR-1 be used in reflow soldering processes?
Yes, 1N4698UR-1 supports lead-free reflow soldering with a maximum solder temperature of 260 °C for 10 seconds, compliant with MIL-STD-750 Method 2026. Its DO-213AA glass body and matte-tin (RoHS) or tin-lead terminations are qualified for standard SMT reflow profiles, including peak temperatures up to 260 °C.
Does 1N4698UR-1 require derating at elevated ambient temperatures?
Yes, 1N4698UR-1 must be derated above 50 °C ambient temperature when mounted on FR4 with 1 oz copper. Its 500 mW power rating applies only below that threshold; above 50 °C, dissipation linearly decreases to zero at 125 °C end-cap temperature, per the published power derating curve in Figure 1 of the datasheet.
Is 1N4698UR-1 suitable for space applications?
Yes-1N4698UR-1 is eligible for MIL-PRF-19500 up-screening (MQ/JAN, MX/JANTX, MV/JANTXV, MSP/JANS levels) and exhibits inherent radiation hardness per Microsemi MicroNote 050. When procured with appropriate screening, it meets requirements for low-Earth orbit and geosynchronous satellite payload subsystems.
How does the metallurgical bond in 1N4698UR-1 improve reliability compared to wire-bonded Zeners?
The metallurgical bond in 1N4698UR-1 eliminates thermomechanical stress points associated with aluminum or gold wire bonds. This prevents interfacial fatigue failure under thermal cycling, enabling >1 million cycles between –65 °C and +175 °C without parameter shift-critical for automotive under-hood or downhole oilfield electronics where 1N4698UR-1 delivers proven long-term stability.
1N4698UR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 8.4 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
1N4698UR-1 FAQ
1.How can I place an order for 1N4698UR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4698UR-1 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 1N4698UR-1 reliable?
The price and inventory of 1N4698UR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4698UR-1 is usually 5 days.
3.What payment methods are accepted for 1N4698UR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4698UR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4698UR-1?
1N4698UR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4698UR-1 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 1N4698UR-1?
For technical support, including 1N4698UR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4698UR-1 requirements.
6.How does Aetrix verify that 1N4698UR-1 is sourced from the original manufacturer or authorized distributors?
All 1N4698UR-1 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 1N4698UR-1 meets industry standards.
7.What is the process for return or replacement of 1N4698UR-1?
All 1N4698UR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4698UR-1, 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 1N4698UR-1 part is unused and in its original packaging.
Return procedure for 1N4698UR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4698UR-1 Tags
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