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Microchip Technology 1N4691UR-1/TR
- Part No.:
- 1N4691UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4691UR-1/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,499
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Product details
Overview
1N4691UR-1/TR from Microsemi is a 6.2 V, ±5% tolerance, 500 mW surface-mount Zener diode in DO-213AA (SOD80/MLL34) MELF glass package, tested at 50 µA Zener current, with 10.0 V maximum voltage regulation and 5.0 µA reverse leakage at 10.0 V, used for precision low-power voltage reference and regulation in space-constrained analog circuits.
For engineers reviewing the 1N4691UR-1/TR datasheet, 1N4691UR-1/TR pinout, 1N4691UR-1/TR application, or 1N4691UR-1/TR equivalent, key selection criteria include its ultra-low 50 µA test current, hermetically sealed glass construction, MIL-PRF-19500 up-screening capability, RoHS-compliant matte-tin plating option, and minimal 1.5 V forward voltage at 100 mA.
Technical Context
The 1N4691UR-1/TR operates as a two-terminal voltage reference device relying on silicon Zener breakdown, not avalanche, with a nominal 6.2 V regulation point defined at IZT = 50 µA. Its internal metallurgical bond between silicon die and metal end caps ensures high thermal and mechanical reliability under thermal cycling and radiation exposure.
Designed for stable operation across –65 °C to +175 °C junction temperature range, it delivers consistent regulation with only 0.95 V voltage regulation (∆VZ), 10.0 µA reverse leakage at VR = 10.0 V, and 90 mA maximum Zener current (IZM), enabling use in low-current bias networks and sensor excitation circuits where power budget is sub-1 mW.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V at 50 µA - defines precise regulation point for low-current reference applications |
| Tolerance | ±5% - standard commercial-grade accuracy; tighter 1%/2% options available per nomenclature |
| Power Dissipation | 0.5 W - supports continuous operation up to 90 mA IZM at ambient <50 °C on FR4 |
| Reverse Leakage (IR) | 5.0 µA at 10.0 V - ensures minimal error contribution in high-impedance bias networks |
| Voltage Regulation (∆VZ) | 0.95 V - variation between 10 µA and 100 µA test points, indicating stable knee region |
| Junction Temp Range | –65 °C to +175 °C - enables deployment in extended industrial, aerospace, and downhole environments |
| Forward Voltage (VF) | 1.5 V at 100 mA - allows use as low-drop rectifier or clamp in dual-role designs |
Pinout & Package
DO-213AA (SOD80/MLL34) MELF glass package: hermetically sealed cylindrical body with metallurgically bonded metal end caps; cathode indicated by single black band; RoHS-compliant matte-tin or SnPb plating; weight 0.04 g; tape-and-reel packaging per EIA-481-1-B (TR suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Banded end | Connected to regulated voltage node; polarity must be observed to avoid forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in humid or corrosive environments |
| Metallurgical die-to-cap bonding | Provides superior thermal conductivity (RθJL = 100 °C/W) and mechanical robustness vs. epoxy-packaged Zeners |
| Ultra-low 50 µA Zener test current | Enables stable regulation in micro-power circuits where supply current is limited to <100 µA |
| MIL-PRF-19500 up-screening option | Supports qualification for high-reliability military, space, and avionics programs with traceable lot data |
| ESD immunity per MIL-STD-750 Method 1020 | Withstands >4 kV HBM without parameter shift, simplifying handling and board-level ESD design |
Applications
| Industrial Sensor Signal Conditioning | Aerospace Power Monitor Reference |
|---|---|
Use Scenario: Providing stable 6.2 V reference for bridge sensor amplifiers in factory-floor pressure transducers operating from 12 V rails. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference establishing precision bias point for op-amp input stages. Use Value: Low 50 µA test current minimizes loading on high-impedance sensor outputs while maintaining ±5% regulation over –40 °C to +85 °C. | Use Scenario: Generating calibrated threshold voltage for comparator-based overvoltage detection in satellite power distribution units. IC Role / Device Role / Timing Role: Zener-regulated reference node feeding comparator hysteresis network in radiation-hardened monitoring circuit. Use Value: Hermetic DO-213AA package and inherent radiation hardness per MicroNote 050 ensure stable 6.2 V reference under total ionizing dose exposure. |
| Medical Instrument Bias Network | Test & Measurement Calibration Source |
Use Scenario: Supplying fixed 6.2 V bias to photodiode transimpedance amplifier in portable blood oximetry modules. IC Role / Device Role / Timing Role: Low-noise shunt regulator stabilizing virtual ground in ultra-low-power analog front-end. Use Value: 1.5 V forward voltage and 5.0 µA leakage at 10 V enable bidirectional clamping and minimal offset error in precision current-to-voltage conversion. | Use Scenario: Serving as traceable 6.2 V calibration point in handheld multimeter reference subsystems requiring field recalibration. IC Role / Device Role / Timing Role: Primary voltage standard referenced against NIST-traceable sources during production test. Use Value: ±5% tolerance with optional 1% screening and MIL-PRF-19500 up-screening provides metrology-grade repeatability across production lots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A-T | Same 6.2 V nominal, but 1 W power rating, DO-41 through-hole package, 10 mA IZT | Requires PCB through-hole mounting and higher bias current; unsuitable for space-constrained SMT layouts | Select when higher power margin or legacy through-hole compatibility is required |
| BZX84-C6V2 | 6.2 V SOT-23 package, 350 mW rating, 5 mA IZT, ±5% tolerance, non-hermetic plastic | Lacks hermetic seal and radiation hardness; higher leakage (1 µA @ VR) and less stable ∆VZ (1.5 V) | Select for cost-sensitive consumer applications where environmental ruggedness is not critical |
Compared with 1N4691UR-1/TR, the 1N4735A-T offers higher power headroom but sacrifices SMT compatibility and low-current operation, while the BZX84-C6V2 reduces size and cost but compromises reliability, leakage, and radiation performance-making 1N4691UR-1/TR optimal for high-integrity, low-power, hermetically sealed designs.
Availability
1N4691UR-1/TR is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, aerospace power monitor reference, and medical instrument bias network applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1N4691UR-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 analog and mixed-signal components.
The 1N4691UR-1/TR belongs to Microsemi's legacy DO-213AA Zener series designed specifically for applications demanding hermetic sealing, MIL-qualified reliability, and stable low-current voltage regulation in harsh environments.
FAQ
What is the Zener voltage and test current for the 1N4691UR-1/TR?
The 1N4691UR-1/TR has a nominal Zener voltage of 6.2 V, specified at a Zener test current (IZT) of 50 µA. This ultra-low test current enables stable regulation in micro-power circuits where supply current is tightly constrained. The device maintains this voltage within ±5% tolerance across its operating temperature range, making the 1N4691UR-1/TR ideal for precision low-current reference applications.
Is the 1N4691UR-1/TR RoHS compliant?
Yes, the 1N4691UR-1/TR is available in RoHS-compliant versions with matte-tin plating on the end caps, designated by the "e3" suffix in the full part number (e.g., 1N4691UR-1/TR e3). RoHS compliance applies only to commercial-grade units; up-screened versions per MIL-PRF-19500 retain SnPb plating unless otherwise specified. Always verify the specific reel label or datasheet revision for compliance status of your 1N4691UR-1/TR shipment.
What package type does the 1N4691UR-1/TR use?
The 1N4691UR-1/TR uses the DO-213AA package, also known as SOD80 or MLL34, a hermetically sealed glass MELF (Metal Electrode Leadless Face) surface-mount package. It features metallurgically bonded metal end caps, a cathode band marking, and weighs 0.04 grams. This package provides superior moisture resistance and thermal performance compared to plastic SMT Zeners, and is fully compatible with standard reflow soldering profiles up to 260 °C for 10 seconds.
Can the 1N4691UR-1/TR be used in high-reliability aerospace applications?
Yes, the 1N4691UR-1/TR supports MIL-PRF-19500 up-screening for high-reliability aerospace applications. While the base commercial version is qualified per JANS/JANTXV standards, up-screened lots undergo additional testing including burn-in, life test, and radiation hardness verification per Microsemi's MicroNote 050. This makes the 1N4691UR-1/TR suitable for flight-critical power monitoring and reference functions where long-term stability under radiation and thermal stress is mandatory.
What is the maximum reverse leakage current for the 1N4691UR-1/TR?
The maximum reverse leakage current (IR) for the 1N4691UR-1/TR is 5.0 µA, measured at a reverse voltage (VR) of 10.0 V and ambient temperature of 25 °C. This low leakage ensures minimal error injection in high-impedance reference networks and bias circuits. The value remains stable across the full –65 °C to +175 °C junction temperature range, supporting reliable operation in extreme environments without significant drift in the 1N4691UR-1/TR's regulation performance.
1N4691UR-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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5 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
1N4691UR-1/TR FAQ
1.How can I place an order for 1N4691UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4691UR-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 1N4691UR-1/TR reliable?
The price and inventory of 1N4691UR-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 1N4691UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4691UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4691UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4691UR-1/TR?
1N4691UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4691UR-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 1N4691UR-1/TR?
For technical support, including 1N4691UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4691UR-1/TR requirements.
6.How does Aetrix verify that 1N4691UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4691UR-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 1N4691UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4691UR-1/TR?
All 1N4691UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4691UR-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 1N4691UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4691UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4691UR-1/TR Tags
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MMBZ5240B-7-F
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