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Microchip Technology 1N5995UR/TR
- Part No.:
- 1N5995UR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5995UR/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,114
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Product details
Overview
1N5995UR/TR from Microsemi is a surface-mount 500 mW Zener diode with nominal Zener voltage of 6.2 V, ±5% tolerance (B suffix), 5 mA test current, and dynamic impedance of 1300 Ω at IZT; used for precision voltage regulation in power supply feedback loops and reference circuits.
For engineers reviewing the 1N5995UR/TR datasheet, 1N5995UR/TR pinout, 1N5995UR/TR application, or 1N5995UR/TR equivalent, key selection criteria include Zener voltage accuracy, low dynamic impedance at 5 mA, DO-213AA package thermal performance, and RoHS-compliant commercial-grade availability with tape-and-reel packaging.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with specified regulation at IZT = 5 mA and VZ = 6.2 V. Its Zener impedance (ZZT = 1300 Ω) and knee impedance (ZZK = 2050 Ω at IZK = 0.25 mA) define regulation stability across load and temperature variations.
Designed for operation within -65 °C to +175 °C junction temperature range, it exhibits +0.040 %/°C temperature coefficient and maximum reverse leakage of 2.0 µA at 5.0 V, supporting stable reference generation in industrial and aerospace environments where thermal drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±5% at 5 mA - defines precise regulation point for feedback networks and voltage references. |
| Power Dissipation | 0.5 W at 25 °C ambient - limits continuous power handling on FR4 PCBs without forced cooling. |
| Zener Impedance (ZZT) | 1300 Ω at 5 mA - determines output voltage variation under changing load current in regulator applications. |
| Reverse Leakage (IR) | 2.0 µA max at 5.0 V - ensures minimal error current in high-impedance reference paths. |
| Thermal Resistance (RθJA) | 300 °C/W - defines junction-to-ambient temperature rise per watt, critical for derating above 25 °C. |
| Temp. Coefficient (αVZ) | +0.040 %/°C - quantifies voltage drift over temperature, enabling compensation in precision designs. |
| Package | DO-213AA (SOD-80 / MLL34) - hermetically sealed glass MELF package with end-cap soldering and cathode band marking. |
Pinout & Package
DO-213AA (MELF-style) glass package with two metallized end caps; cathode identified by single black band - device operated with banded end positive relative to opposite end during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output terminal | Connected to higher-potential node; reverse-biased to maintain fixed VZ drop across load. |
| Anode (unbanded end) | Reference return terminal | Connected to circuit common or lower-potential node; completes Zener conduction path. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass DO-213AA construction | Enables operation up to +175 °C junction temperature and supports MIL-PRF-19500 screening variants. |
| Low capacitance (typ. <1.5 pF) | Minimizes high-frequency signal coupling and noise injection in RF-adjacent or fast-switching circuits. |
| ESD robustness (MIL-STD-750, Method 1020) | Eliminates need for external ESD protection in handling and board-level assembly processes. |
| Radiation-hardened design | Validated per Microsemi MicroNote 050 - suitable for space-qualified and high-reliability terrestrial systems. |
| RoHS-compliant matte-tin plating | Supports lead-free reflow soldering at 260 °C for 10 seconds without degradation. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Zener reference providing stable 6.2 V threshold for TL431-type shunt regulators or discrete error amplifiers. Use Value: Tight ±5% VZ tolerance and low ZZT ensure <±1% output regulation accuracy across line/load/temperature. |
Use Scenario: Provides excitation voltage and bias reference for bridge-based pressure or temperature transducers in factory automation systems. IC Role / Device Role / Timing Role: Two-terminal voltage reference establishing known potential for ratiometric ADC measurements. Use Value: +0.040 %/°C tempco and <2 µA leakage enable sub-0.1% reference drift over –40 °C to +85 °C operating range. |
| Overvoltage Protection Clamp | Aerospace Power Monitoring |
Use Scenario: Clamps transient surges on 5 V logic rails using series resistor to limit peak current during ESD or load dump events. IC Role / Device Role / Timing Role: Passive crowbar element absorbing excess energy above 6.2 V while protecting downstream CMOS inputs. Use Value: Fast response (<1 ns) and non-sensitive ESD behavior allow direct placement at IC pins without additional TVS coordination. |
Use Scenario: Serves as primary voltage reference in radiation-tolerant DC bus monitors aboard LEO satellites and launch vehicle avionics. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference for analog front-end conditioning of telemetry power rail measurements. Use Value: Inherent radiation hardness (per MicroNote 050) and hermetic DO-213AA package eliminate need for shielding or redundancy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5234B-T | Same 6.2 V ±5%, but DO-35 axial package; RθJA = 500 °C/W vs. 300 °C/W; no RoHS option. | Limited to through-hole assembly; unsuitable for high-density SMT layouts or automated pick-and-place. | Select when legacy through-hole compatibility or higher surge current capability (IZM = 167 mA) is prioritized over thermal performance. |
| BZX55C6V2 | 6.2 V ±5%, DO-35, 500 mW, but ZZT = 100 Ω - significantly lower impedance than 1N5995UR/TR's 1300 Ω. | Higher regulation accuracy under dynamic load changes; however, not radiation-hardened or MIL-qualified. | Choose for cost-sensitive commercial applications requiring tighter regulation, where radiation tolerance and extended temperature range are not required. |
Compared with 1N5995UR/TR, 1N5234B-T trades SMT compatibility and thermal efficiency for mechanical robustness and surge margin, while BZX55C6V2 offers superior dynamic regulation at the expense of radiation hardness and high-temperature reliability.
Availability
1N5995UR/TR is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage clamping circuits, and aerospace power monitoring systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5995UR/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 components for aerospace, defense, and industrial markets.
The 1N5995UR/TR belongs to Microsemi's legacy MIL-PRF-19500-qualified Zener diode family, designed specifically for precision voltage regulation in harsh-environment applications demanding radiation tolerance, wide temperature operation, and hermetic reliability.
FAQ
What is the Zener voltage tolerance and test condition for the 1N5995UR/TR?
The 1N5995UR/TR has a nominal Zener voltage of 6.2 V with ±5% tolerance (B suffix), measured at a test current IZT of 5.0 mA and lead temperature of 30 °C. This tolerance defines the allowable deviation from nominal voltage under specified operating conditions and is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0228-1 Rev. 1.
Does the 1N5995UR/TR support lead-free reflow soldering?
Yes, the 1N5995UR/TR features RoHS-compliant matte-tin plating on its end caps and is rated for soldering at 260 °C for 10 seconds, fully compatible with standard lead-free reflow profiles. The "TR" suffix confirms tape-and-reel packaging optimized for SMT assembly lines.
What is the maximum Zener current (IZM) for the 1N5995UR/TR?
The maximum dc Zener current for the 1N5995UR/TR is 10 mA, calculated from PD = 0.5 W and VZM = 6.51 V (6.2 V × 1.05). This value appears in the Electrical Characteristics table as the "Max. dc Zener Current IZM" entry for 1N5995BUR, confirming safe continuous operation at rated power.
Is the 1N5995UR/TR radiation-hardened?
Yes, the 1N5995UR/TR is inherently radiation-hardened per Microsemi MicroNote 050, a documented characteristic of its hermetic DO-213AA glass construction and internal metallurgical bonding - making it suitable for space and nuclear instrumentation applications without additional hardening.
How is polarity marked on the 1N5995UR/TR package?
The 1N5995UR/TR uses a single black cathode band on the glass body to indicate polarity; the banded end is the cathode and must be connected to the higher-potential node during Zener regulation. This marking aligns with JEDEC DO-213AA standards and is visible under standard optical inspection.
1N5995UR/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:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- 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
1N5995UR/TR FAQ
1.How can I place an order for 1N5995UR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5995UR/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 1N5995UR/TR reliable?
The price and inventory of 1N5995UR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5995UR/TR is usually 5 days.
3.What payment methods are accepted for 1N5995UR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5995UR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5995UR/TR?
1N5995UR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5995UR/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 1N5995UR/TR?
For technical support, including 1N5995UR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5995UR/TR requirements.
6.How does Aetrix verify that 1N5995UR/TR is sourced from the original manufacturer or authorized distributors?
All 1N5995UR/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 1N5995UR/TR meets industry standards.
7.What is the process for return or replacement of 1N5995UR/TR?
All 1N5995UR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5995UR/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 1N5995UR/TR part is unused and in its original packaging.
Return procedure for 1N5995UR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5995UR/TR Tags
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