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Microchip Technology 1N4617UR-1/TR
- Part No.:
- 1N4617UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4617UR-1/TR.pdf
- Description:
- DIODE ZENER 2.4V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,847
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Product details
Overview
1N4617UR-1/TR from Microsemi is a 500 mW surface-mount Zener diode in DO-213AA (MELF) glass package, rated for 2.4 V ±5% Zener voltage at 250 mA test current, with 1400 Ω dynamic impedance, 1.0 µA reverse leakage at 1.0 V, and -0.075 %/°C temperature coefficient. It delivers precision voltage regulation in high-reliability aerospace, defense, and industrial power-supply monitoring circuits.
For engineers reviewing the 1N4617UR-1/TR datasheet, 1N4617UR-1/TR pinout, 1N4617UR-1/TR application, or 1N4617UR-1/TR equivalent, key selection criteria include its MIL-PRF-19500/435 qualification (JAN/JANTXV/JANS levels), hermetically sealed MELF construction, low noise density (1 µV/√Hz), minimal capacitance, and radiation-hardened design per MicroNote 050.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with Zener regulation established at IZT = 250 mA and VZ = 2.4 V. Its metallurgically bonded junction ensures stable long-term voltage performance under thermal cycling and mechanical stress.
Thermal resistance is specified as RθJEC = 100 °C/W (junction-to-end-cap) and RθJA = 300 °C/W on FR4 board; power derates linearly from 500 mW at 25 °C to zero at 175 °C. It exhibits non-ESD-sensitive behavior per MIL-STD-750 Method 1020 and maintains hermetic seal integrity across -65 °C to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.4 V ±5% at 250 mA - defines precise regulation point for low-voltage reference circuits |
| Power Dissipation | 500 mW - supports stable operation in compact SMT layouts without forced cooling |
| Dynamic Impedance (ZZT) | 1400 Ω - indicates moderate regulation stiffness; suitable for moderate-precision biasing |
| Reverse Leakage (IR) | 1.0 µA at 1.0 V - ensures low quiescent current in standby or low-power sensing nodes |
| Temp. Coefficient (αVZ) | -0.075 %/°C - enables predictable drift compensation in temperature-stable references |
| Noise Density | 1 µV/√Hz - minimizes broadband noise injection into analog signal chains and PLLs |
| Junction Temp. Range | -65 °C to +175 °C - qualified for extreme-environment deployment including space-grade systems |
Pinout & Package
DO-213AA (SOD-80 / CDLL34) MELF glass package: hermetically sealed, cylindrical surface-mount case with metallurgically bonded junction. Cathode indicated by single dark band; device operated with banded end positive during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side terminal | Connected to circuit ground or lowest potential node in shunt regulator configuration |
| Cathode | High-side terminal | Banded end; connected to input voltage source; carries regulated output current to load |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | Available up to JANS level - meets stringent screening, testing, and traceability requirements for military/aerospace programs |
| Hermetic MELF construction | DO-213AA glass package - eliminates moisture ingress and intermetallic degradation over lifetime |
| Low-noise regulation | 1 µV/√Hz noise density at 2.4 V - critical for low-phase-noise oscillators and precision ADC references |
| Radiation hardness | Inherently radiation-tolerant per MicroNote 050 - validated for TID and SEE resilience in space applications |
| ESD robustness | Non-sensitive per MIL-STD-750 Method 1020 - withstands handling without special precautions |
Applications
| Avionics Power Monitoring | Satellite DC-DC Reference |
|---|---|
Use Scenario: Real-time monitoring of 3.3 V or 5 V bus voltages in flight control electronics. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable threshold for comparator-based overvoltage detection. Use Value: Maintains regulation accuracy across -55 °C to +125 °C ambient with <±0.5% total error including tempco and tolerance. |
Use Scenario: Biasing voltage reference for isolated feedback optocouplers in radiation-hardened DC-DC converters. IC Role / Device Role / Timing Role: Primary voltage setpoint generator ensuring consistent output regulation despite TID exposure. Use Value: Hermetic seal and radiation hardness prevent parameter shift after 100 krad(Si) total ionizing dose. |
| Downhole Oilfield Sensor | Tactical Radio Bias Network |
Use Scenario: Providing stable 2.4 V reference for MEMS pressure transducer signal conditioning in 175 °C wellbore environments. IC Role / Device Role / Timing Role: High-temperature Zener shunt regulating local LDO input to maintain analog front-end stability. Use Value: Continuous operation at 175 °C junction temperature enabled by 100 °C/W RθJEC and ceramic substrate mounting. |
Use Scenario: Generating clean bias points for RF power amplifier stages in manpack radios exposed to shock/vibration. IC Role / Device Role / Timing Role: Low-noise voltage clamp protecting sensitive mixer and LO buffer inputs from supply transients. Use Value: 1 µV/√Hz noise density prevents reciprocal mixing degradation in 20–500 MHz receive paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4617-1 | Commercial-grade, RoHS-compliant version; identical electrical specs but no MIL screening. | Lacks JAN/JANTXV/JANS qualification; not approved for Class H or spaceflight use. | Select when cost sensitivity outweighs need for military reliability screening. |
| 1N4617UR-1 | Same die and package as 1N4617UR-1/TR, but supplied in bulk or ammo pack - no tape-and-reel packaging. | No EIA-481-1-A tape/reel; unsuitable for high-speed automated SMT placement. | Select only for manual prototyping or low-volume hand assembly. |
Compared with 1N4617UR-1/TR, CDLL4617-1 offers identical regulation performance at lower cost but forfeits mil-spec traceability and environmental ruggedness, while 1N4617UR-1 lacks tape-and-reel support - making 1N4617UR-1/TR the sole option for production-scale automated assembly of high-reliability systems.
Availability
1N4617UR-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite DC-DC reference, and downhole oilfield sensor applications requiring stable component supply with full traceability and extended temperature capability.
Supply support for 1N4617UR-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 analog and mixed-signal ICs, discrete devices, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N4617UR-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical systems where long-term stability, hermetic sealing, and environmental survivability are mandatory.
FAQ
What is the Zener voltage tolerance for 1N4617UR-1/TR?
The 1N4617UR-1/TR has a nominal Zener voltage of 2.4 V with a standard tolerance of ±5%, as defined in the JEDEC 1N4617 specification and confirmed in Microsemi's T4-LDS-0245 datasheet. This tolerance applies at 250 mA test current and 25 °C ambient temperature, and remains valid across the full qualified temperature range when used within derated power limits.
Is 1N4617UR-1/TR suitable for space applications?
Yes - the 1N4617UR-1/TR is inherently radiation-hardened per Microsemi MicroNote 050 and qualified to JANS level per MIL-PRF-19500/435, making it suitable for low-earth orbit and deep-space missions. Its hermetic DO-213AA package, metallurgical bond construction, and verified TID resilience support use in satellite power regulation and telemetry subsystems.
Does 1N4617UR-1/TR have RoHS compliance?
The 1N4617UR-1/TR is not RoHS compliant; RoHS versions are available only in commercial-grade variants such as CDLL4617-1 (with e3 suffix). The "UR-1" suffix denotes the mil-spec, tin-lead plated version intended for high-reliability applications where leaded solder compatibility and proven long-term reliability are prioritized over RoHS adherence.
What is the maximum reverse leakage current for 1N4617UR-1/TR?
The maximum reverse leakage current (IR) for 1N4617UR-1/TR is 1.0 µA at VR = 1.0 V and 25 °C, as specified in the Electrical Characteristics table on page 4 of T4-LDS-0245. This low leakage supports ultra-low-power bias networks and high-impedance sensing interfaces without significant error contribution.
Can 1N4617UR-1/TR be used in high-temperature downhole environments?
Yes - the 1N4617UR-1/TR is rated for junction temperatures from -65 °C to +175 °C and features a hermetic DO-213AA glass package that prevents moisture-induced failure. When mounted with appropriate thermal relief and using its RθJEC = 100 °C/W rating, it sustains reliable regulation in downhole tools operating continuously at 175 °C ambient.
1N4617UR-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):
- 2.4 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1400 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1 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
1N4617UR-1/TR FAQ
1.How can I place an order for 1N4617UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4617UR-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 1N4617UR-1/TR reliable?
The price and inventory of 1N4617UR-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 1N4617UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4617UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4617UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4617UR-1/TR?
1N4617UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4617UR-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 1N4617UR-1/TR?
For technical support, including 1N4617UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4617UR-1/TR requirements.
6.How does Aetrix verify that 1N4617UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4617UR-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 1N4617UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4617UR-1/TR?
All 1N4617UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4617UR-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 1N4617UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4617UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4617UR-1/TR Tags
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