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Microchip Technology 1N5996UR/TR
- Part No.:
- 1N5996UR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5996UR/TR.pdf
- Description:
- DIODE ZENER 6.8V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,619
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Product details
Overview
1N5996UR/TR from Microsemi is a surface-mount 500 mW Zener diode with nominal Zener voltage of 6.8 V, ±5% tolerance (B-suffix), 5.0 mA test current, and dynamic impedance of 750 Ω at IZT. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range (–65 °C to +175 °C) using DO-213AA (MLL34/SOD80) MELF glass package.
For engineers reviewing the 1N5996UR/TR datasheet, 1N5996UR/TR pinout, 1N5996UR/TR application, or 1N5996UR/TR equivalent, key selection factors include its 6.8 V regulation accuracy, low 750 Ω Zener impedance at 5 mA, 0.5 W power rating with 300 °C/W junction-to-ambient thermal resistance, RoHS-compliant matte-tin plating, and tape-and-reel packaging for automated assembly.
Technical Context
This device operates as a reverse-biased voltage reference diode, maintaining stable 6.8 V output across regulated current range (IZK = 0.25 mA to IZM = 5.2 mA). Its breakdown knee current (IZK) is specified at 0.25 mA with ZZK = 1800 Ω, enabling low-current regulation capability.
The DO-213AA hermetically sealed glass package provides inherent radiation hardness per MicroNote 050 and ESD insensitivity per MIL-STD-750 Method 1020. Thermal performance is defined for FR4 PCB mounting with 1 oz copper and specified footprint, yielding RθJA = 300 °C/W and RθJL = 150 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.8 V ±5% at 5.0 mA - ensures precise mid-range voltage reference with tight tolerance for feedback loops. |
| Power Dissipation PD | 0.5 W at 25 °C - supports compact board layout without forced cooling in low-power regulation stages. |
| Zener Impedance ZZT | 750 Ω at IZT = 5 mA - maintains low output variation under load transients in analog sensing circuits. |
| Max Reverse Leakage IR | 2.0 µA at VR = 5.0 V - minimizes quiescent current drain in battery-backed systems. |
| Junction Temperature Range | –65 °C to +175 °C - enables operation in extended industrial and aerospace environments without derating. |
| Thermal Resistance RθJA | 300 °C/W on FR4 - defines required copper area and airflow for thermal management in enclosed enclosures. |
| Forward Voltage VF | 1.1 V at 200 mA - allows use as clamp diode in bidirectional protection schemes with predictable conduction loss. |
Pinout & Package
DO-213AA (SOD80/MLL34) MELF glass package: hermetically sealed cylindrical body with tin-lead or RoHS-compliant matte-tin end-cap plating; cathode indicated by single band; polarity requires banded end to be positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener regulation terminal | Connected to higher potential node; reverse bias establishes 6.8 V reference relative to anode. |
| Anode (unbanded end) | Reference ground node | Typically tied to system ground or common return path; completes Zener current loop. |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount DO-213AA package | Enables high-density automated assembly with MELF footprint compatibility and no lead-induced parasitics. |
| Internal metallurgical bonds | Ensures long-term reliability and thermal stability under repeated power cycling in mission-critical systems. |
| RoHS-compliant version (e3 suffix) | Meets EU environmental compliance without sacrificing electrical performance or thermal robustness. |
| Radiation-hardened construction | Validated per MicroNote 050 for TID tolerance in space-grade applications without shielding overhead. |
| ESD-insensitive design | Withstands >4 kV HBM per MIL-STD-750 Method 1020, eliminating need for external ESD protection in handling. |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side regulation. IC Role / Device Role / Timing Role: Zener diode providing precise 6.8 V reference to optocoupler input or error amplifier. Use Value: Tight ±5% tolerance and low 750 Ω impedance ensure <±1% output voltage accuracy across line/load variations. | Use Scenario: Clamping transient surges on 5 V logic rails during hot-plug events. IC Role / Device Role / Timing Role: Shunt regulator diverting excess current when rail exceeds 6.8 V threshold. Use Value: Fast response to overvoltage with minimal capacitance (<2 pF typical) preserves signal integrity in high-speed digital interfaces. |
| Temperature-Stable Sensor Bias | Industrial Current Loop Interface |
Use Scenario: Biasing precision RTD or thermistor bridges in 4–20 mA transmitter front-ends. IC Role / Device Role / Timing Role: Voltage reference establishing excitation current setpoint with low TC (+0.044 %/°C). Use Value: Positive temperature coefficient counterbalances sensor drift, reducing calibration burden over –40 °C to +85 °C. | Use Scenario: Providing regulated 6.8 V supply to loop-powered field instrument ICs. IC Role / Device Role / Timing Role: Local shunt regulator maintaining stable bias for op-amps and ADCs in 2-wire transmitters. Use Value: 0.5 W rating sustains continuous operation at 70 mA loop current while dissipating only 0.48 W at full scale. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5235B-T | Same 6.8 V ±5%, but DO-35 axial package; higher RθJA = 500 °C/W; VF = 1.5 V. | Requires through-hole assembly; less suitable for high-density SMT layouts or vibration-prone environments. | Select when legacy board design mandates axial leads or cost sensitivity outweighs thermal/mounting advantages. |
| BZX55C6V8 | Same 6.8 V ±5%, DO-35 package; 500 mW rating; ZZT = 80 Ω at 5 mA - lower impedance but tighter thermal limits. | Higher leakage (5 µA @ 5 V); not radiation-hardened; RoHS-only availability limits military reuse. | Prefer for commercial consumer designs where low impedance dominates over radiation tolerance or extended temperature range. |
Compared with 1N5996UR/TR, the 1N5235B-T offers identical regulation but inferior thermal performance and mounting flexibility, while BZX55C6V8 trades radiation hardness and leakage for lower dynamic impedance - making 1N5996UR/TR optimal for ruggedized industrial and aerospace reference designs.
Availability
1N5996UR/TR is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and industrial current loop interface applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1N5996UR/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 1N5996UR/TR belongs to Microsemi's legacy 1N5985BUR–1N6031BUR Zener series designed for precision voltage regulation in harsh-environment applications including defense electronics, avionics, and industrial control systems.
FAQ
What is the Zener voltage tolerance and test current for the 1N5996UR/TR?
The 1N5996UR/TR has a nominal Zener voltage of 6.8 V with ±5% tolerance (B-suffix) and is tested at 5.0 mA (IZT). This ensures regulation accuracy within 6.46 V to 7.14 V under standard conditions, supporting stable reference generation in feedback networks where tight voltage control is critical for system accuracy.
Does the 1N5996UR/TR meet RoHS requirements?
Yes, the 1N5996UR/TR is RoHS compliant (e3 suffix), featuring matte-tin end-cap plating suitable for lead-free reflow soldering up to 260 °C for 10 seconds. This compliance applies to commercial-grade units only and aligns with EU Directive 2011/65/EU without compromising electrical or thermal performance.
What is the maximum Zener current (IZM) for the 1N5996UR/TR?
The maximum Zener current for the 1N5996UR/TR is 5.2 mA at nominal 6.8 V, calculated from its 0.5 W power rating and voltage tolerance. Exceeding this current risks thermal runaway; designers must ensure operating current stays within 0.25 mA (IZK) to 5.2 mA to maintain regulation integrity and long-term reliability.
How does the DO-213AA package of the 1N5996UR/TR affect thermal performance?
The DO-213AA (MLL34) package of the 1N5996UR/TR delivers RθJA = 300 °C/W on FR4 with 1 oz copper, enabling efficient heat dissipation in compact layouts. Its hermetic glass construction eliminates moisture ingress, preserving Zener characteristics over time - unlike plastic packages that may degrade under thermal cycling or humidity exposure.
Is the 1N5996UR/TR suitable for radiation-intensive environments?
Yes, the 1N5996UR/TR is inherently radiation-hardened per Microsemi MicroNote 050, validated for total ionizing dose (TID) tolerance in space and nuclear applications. Its glass/MELF construction and internal metallurgical bonds prevent parametric shift under gamma irradiation, making it suitable where commercial Zeners would fail prematurely.
1N5996UR/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):
- 6.8 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
1N5996UR/TR FAQ
1.How can I place an order for 1N5996UR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5996UR/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 1N5996UR/TR reliable?
The price and inventory of 1N5996UR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5996UR/TR is usually 5 days.
3.What payment methods are accepted for 1N5996UR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5996UR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5996UR/TR?
1N5996UR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5996UR/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 1N5996UR/TR?
For technical support, including 1N5996UR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5996UR/TR requirements.
6.How does Aetrix verify that 1N5996UR/TR is sourced from the original manufacturer or authorized distributors?
All 1N5996UR/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 1N5996UR/TR meets industry standards.
7.What is the process for return or replacement of 1N5996UR/TR?
All 1N5996UR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5996UR/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 1N5996UR/TR part is unused and in its original packaging.
Return procedure for 1N5996UR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5996UR/TR Tags
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