My Inquiry
My Account
Microchip Technology 1N5986UR-1/TR
- Part No.:
- 1N5986UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5986UR-1/TR.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,720
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5986UR-1/TR from Microsemi is a surface-mount 2.7 V, 5% tolerance Zener diode in DO-213AA (SOD-80/MELF) package, rated for 500 mW power dissipation at 25°C, with 100 mA test current, 1900 Ω dynamic impedance at IZT, and 75 µA max reverse leakage at 1.0 V. It serves as a precision voltage reference or shunt regulator in low-power analog sensing and power supply feedback circuits.
For engineers reviewing the 1N5986UR-1/TR datasheet, 1N5986UR-1/TR pinout, 1N5986UR-1/TR application, or 1N5986UR-1/TR equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (300 °C/W), RoHS-compliant matte-tin plating, and MELF package suitability for high-reliability industrial and aerospace environments.
Technical Context
This device operates as a silicon junction Zener diode with metallurgically bonded end caps and hermetically sealed glass construction. Its regulation behavior is defined at IZT = 100 mA, where VZ = 2.7 V ±5%, and dynamic impedance ZZT = 1900 Ω - indicating moderate noise rejection and stable knee characteristics under nominal bias.
Designed for surface-mount assembly on FR4 PCBs with 1 oz copper, it exhibits TJ/TSTG = −65 to +175 °C operating range, RθJA = 300 °C/W, and forward voltage VF = 1.1 V @ 200 mA - confirming compatibility with standard reflow profiles and low forward conduction loss in bidirectional protection roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.7 V ±5% @ IZT = 100 mA - defines precise clamping threshold for low-voltage reference applications. |
| Power Dissipation PD | 0.5 W @ TA ≤ 25 °C - sets maximum continuous power handling on standard FR4 layout. |
| Dynamic Impedance ZZT | 1900 Ω @ 100 mA - indicates voltage regulation stability under small-signal AC modulation. |
| Reverse Leakage IR | 75 µA max @ VR = 1.0 V - ensures minimal quiescent current draw in standby regulation modes. |
| Junction Temperature Range | −65 to +175 °C - supports operation in extended industrial and aerospace thermal environments. |
| Package Type | DO-213AA (SOD-80/MELF) - provides robust mechanical reliability and consistent thermal performance vs. axial DO-35. |
| RoHS Compliance | e3 suffix (matte-tin plating) - meets lead-free soldering requirements without compromising solderability. |
Pinout & Package
DO-213AA (SOD-80/MELF) glass package with two metallized end caps; cathode identified by single black band - operated with banded end positive relative to opposite end during Zener breakdown.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener anode connection in reverse-bias configuration | Must be held at higher potential than anode to enable regulation; polarity critical for correct clamping direction. |
| Anode (unbanded end) | Zener cathode connection in reverse-bias configuration | Reference node or ground return path; forms low-impedance sink for excess current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Enables long-term parameter stability and immunity to moisture-induced degradation in harsh environments. |
| Metallurgically bonded end caps | Ensures low contact resistance and high thermal conductivity between die and package terminals. |
| ESD insensitivity (MIL-STD-750, Method 1020) | Eliminates need for external ESD protection in board-level handling and system integration. |
| Radiation hardness per MicroNote 050 | Validated for use in space-qualified and nuclear instrumentation systems requiring TID tolerance. |
| Multiple screening levels (JAN/JANTX/JANTXV/JANS) | Supports military-grade qualification paths without redesign when migrating from commercial to ruggedized versions. |
Applications
| Industrial Power Monitoring | Automotive Sensor Reference |
|---|---|
|
Use Scenario: Voltage scaling and offset correction in 3.3 V rail monitoring circuits for PLC analog input modules. IC Role / Device Role / Timing Role: Shunt reference diode providing stable 2.7 V reference for ADC front-end op-amp biasing. Use Value: Tight 5% tolerance and low 75 µA leakage ensure measurement accuracy across −40 to +85 °C ambient range. |
Use Scenario: Regulating excitation voltage for piezoresistive pressure sensors in engine control units. IC Role / Device Role / Timing Role: Low-noise Zener shunt regulator maintaining constant sensor bridge bias despite battery voltage fluctuations. Use Value: 1900 Ω ZZT minimizes output ripple, while DO-213AA package withstands automotive vibration and thermal cycling. |
| Aerospace Avionics Biasing | Medical Instrument Calibration |
|
Use Scenario: Generating stable bias for op-amps in radiation-tolerant flight control signal conditioning boards. IC Role / Device Role / Timing Role: Precision voltage clamp referenced to chassis ground in dual-supply analog signal chains. Use Value: Inherent radiation hardness (per MicroNote 050) and −65 to +175 °C rating support Class S mission-critical operation. |
Use Scenario: Calibrating 2.5 V reference nodes in portable ECG amplifier stages requiring traceable metrology. IC Role / Device Role / Timing Role: Primary shunt regulator establishing known voltage point for gain-setting resistor networks. Use Value: 2.7 V ±5% tolerance enables NIST-traceable calibration without trimming, reducing production test time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C2V7 | Same 2.7 V ±5%, but DO-35 axial package; higher RθJA = 500 °C/W; no MIL-PRF-19500 screening option. | Limited to non-vibration-sensitive consumer/industrial PCBs; unsuitable for high-reliability MELF footprint designs. | Select only if legacy through-hole assembly or cost-driven non-military use case requires axial form factor. |
| 1N5223B | 2.7 V ±5%, DO-35 package; 0.5 W rating; ZZT = 2000 Ω @ 20 mA - lower test current yields less stable regulation at higher currents. | Not recommended for >50 mA load conditions due to higher dynamic impedance drift above 20 mA. | Prefer 1N5986UR-1/TR when operating near 100 mA or requiring tighter thermal management on FR4. |
Compared with BZX55C2V7 and 1N5223B, the 1N5986UR-1/TR delivers superior thermal performance (RθJA = 300 °C/W), MELF mechanical robustness, and direct path to military screening - making it optimal for high-stability, surface-mount, and mission-critical applications.
Availability
1N5986UR-1/TR is available at Aetrix Electronics and suitable for industrial power monitoring, automotive sensor reference, aerospace avionics biasing, and medical instrument calibration requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N5986UR-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, RF, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N5985BUR-1 to 1N6031BUR-1 series was designed to deliver JEDEC-registered Zener regulation in ruggedized surface-mount MELF packages, supporting applications demanding long-term stability, ESD immunity, and extended temperature operation.
FAQ
What is the Zener voltage tolerance and test condition for the 1N5986UR-1/TR?
The 1N5986UR-1/TR has a nominal Zener voltage of 2.7 V with ±5% tolerance, measured at a test current IZT of 100 mA and lead temperature of 30 °C. This tolerance is guaranteed across the full operating temperature range of −65 to +175 °C, and the "B" suffix in the part number explicitly denotes the 5% tolerance grade per Microsemi's nomenclature.
Is the 1N5986UR-1/TR RoHS compliant, and what plating does it use?
Yes, the 1N5986UR-1/TR is RoHS compliant (e3 suffix), featuring matte-tin plating on both end caps. This plating meets MIL-STD-750, Method 2026 for solderability and is qualified for lead-free reflow processes up to 260 °C for 10 seconds, ensuring reliable assembly on modern PCBs without tin whisker risk.
What is the maximum DC Zener current IZM for the 1N5986UR-1/TR, and how is it calculated?
The maximum DC Zener current IZM for the 1N5986UR-1/TR is 185 mA, derived from the formula IZM = PD / VZM, where PD = 0.5 W and VZM = 2.835 V (upper limit of 2.7 V ±5%). This value is confirmed in the Electrical Characteristics table on page 3 of the T4-LDS-0228-1 datasheet and reflects worst-case power handling at the high end of voltage tolerance.
How does the DO-213AA package of the 1N5986UR-1/TR compare thermally to axial DO-35 alternatives?
The DO-213AA package of the 1N5986UR-1/TR achieves RθJA = 300 °C/W on FR4 with 1 oz copper, significantly better than typical DO-35 parts (e.g., ~500 °C/W). This 40% thermal improvement results from superior end-cap-to-PCB heat transfer in the MELF geometry and enables higher sustained power dissipation without derating in compact layouts.
Does the 1N5986UR-1/TR require external ESD protection in system design?
No, the 1N5986UR-1/TR is inherently ESD-insensitive per MIL-STD-750, Method 1020, and does not require external TVS or series resistors for handling or board-level ESD protection. This characteristic is verified in Microsemi's qualification testing and documented in the Applications/Benefits section of the datasheet.
1N5986UR-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):
- 2.7 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
1N5986UR-1/TR FAQ
1.How can I place an order for 1N5986UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5986UR-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 1N5986UR-1/TR reliable?
The price and inventory of 1N5986UR-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 1N5986UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5986UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5986UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5986UR-1/TR?
1N5986UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5986UR-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 1N5986UR-1/TR?
For technical support, including 1N5986UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5986UR-1/TR requirements.
6.How does Aetrix verify that 1N5986UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5986UR-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 1N5986UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5986UR-1/TR?
All 1N5986UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5986UR-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 1N5986UR-1/TR part is unused and in its original packaging.
Return procedure for 1N5986UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5986UR-1/TR Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
