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Microchip Technology 1N5936BUR-1/TR
- Part No.:
- 1N5936BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N5936BUR-1/TR.pdf
- Description:
- DIODE ZENER 30V 1.25W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,487
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Product details
Overview
1N5936BUR-1/TR from Microsemi is a 1.5 W surface-mount Zener diode in DO-213AB (MELF) glass package, rated for 30 V ±5% Zener voltage at 12.5 mA test current, with 28 Ω dynamic impedance and 1.0 µA reverse leakage at 22.8 V. It delivers stable voltage regulation in high-density power supply rails and precision reference circuits across industrial temperature range.
For engineers reviewing the 1N5936BUR-1/TR datasheet, 1N5936BUR-1/TR pinout, 1N5936BUR-1/TR application, or 1N5936BUR-1/TR equivalent, this page provides verified electrical parameters, MIL-PRF-19500 screening options, thermal resistance data (RθJA = 120 °C/W), hermetic glass packaging details, and RoHS-compliant variants - all critical for aerospace, medical, and high-reliability embedded designs.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-bias breakdown mode, with Zener voltage specified at TEC = 30 °C and measured 90 seconds after DC current application. Its metallurgically bonded tungsten slugs and voidless glass seal ensure low thermal resistance (RθJEC = 40 °C/W) and radiation hardness per MicroNote 050.
It exhibits 28 Ω dynamic impedance (ZZT) at IZT = 12.5 mA and maintains ≤1.0 µA reverse leakage (IR) up to 22.8 V, enabling stable regulation under varying load and temperature conditions. Capacitance is characterized per Figure 2 and scales inversely with Zener voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30 V ±5% at IZT = 12.5 mA - defines nominal regulation point with tight tolerance for precision references. |
| Power Dissipation (PD) | 1.5 W @ TEC ≤ 115 °C - supports continuous operation in thermally constrained SMT layouts. |
| Dynamic Impedance (ZZT) | 28 Ω at IZT = 12.5 mA - determines output voltage variation under load transients. |
| Reverse Leakage (IR) | ≤1.0 µA at VR = 22.8 V - ensures minimal quiescent current in standby or low-power modes. |
| Junction Temperature Range | –65 °C to +175 °C - enables deployment in extended-temperature automotive, downhole, and military systems. |
| Thermal Resistance (RθJA) | 120 °C/W on FR4 (1 oz Cu) - informs heatsinking requirements and derating curves for PCB layout. |
| Forward Voltage (VF) | 1.2 V max at IF = 200 mA - relevant for polarity verification and ESD testing during handling. |
Pinout & Package
DO-213AB (MELF) hermetically sealed glass package with metallurgically bonded tungsten slugs; cathode indicated by single band; lead-free matte tin plating over copper; weight ≈ 0.05 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; grounded or low-side node in Zener regulation | Connected to system ground or return path when used as shunt regulator; must remain at lower potential than cathode during regulation. |
| Cathode | Negative terminal in forward bias; input/high-side node in Zener regulation | Banded end; connected to unregulated input rail; sustains 30 V reverse breakdown while sinking regulated current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift; certified for high-reliability screening per MIL-PRF-19500. |
| Metallurgically enhanced internal contacts | Reduces thermal resistance (RθJEC = 40 °C/W) and improves power cycling endurance vs standard glass diodes. |
| ESD immunity per MIL-STD-750 Method 1020 | Enables safe handling and assembly without external protection circuitry in sensitive analog subsystems. |
| RoHS-compliant (e3) and non-RoHS variants | Supports dual compliance paths for legacy and new-design programs without footprint or layout changes. |
| Specified capacitance profile | Capacitance values documented per Figure 2 - critical for noise-sensitive RF biasing and timing applications. |
Applications
| Industrial Power Supply Regulation | Medical Instrument Reference Voltage |
|---|---|
Use Scenario: Stabilizing +3.3 V or +5 V auxiliary rails in programmable logic controllers and motor drives where input ripple exceeds LDO dropout. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining fixed bias point for op-amps and ADC references despite line/load variation. Use Value: Delivers 30 V regulation with ≤28 Ω dynamic impedance, ensuring <±15 mV output shift under 10 mA load step - sufficient for 12-bit precision systems. |
Use Scenario: Providing stable excitation voltage for bridge sensors (e.g., strain gauges) in portable diagnostic devices operating from battery sources. IC Role / Device Role / Timing Role: Precision Zener reference replacing IC-based references where size, cost, and radiation tolerance are critical. Use Value: –65 °C to +175 °C junction range and hermetic seal prevent calibration drift in sterilizable or implantable equipment housings. |
| Aerospace Avionics Biasing | Test & Measurement Equipment Calibration |
Use Scenario: Generating fixed bias for RF front-end LNAs in satellite transceivers exposed to total ionizing dose (TID) >100 krad(Si). IC Role / Device Role / Timing Role: Radiation-hardened voltage reference per MicroNote 050, used in analog signal chains requiring long-term stability. Use Value: Inherent radiation hardness eliminates need for shielding or redundant reference ICs - reducing SWaP-C in payload electronics. |
Use Scenario: Serving as traceable calibration standard in benchtop multimeters and source-measure units where drift <50 ppm/°C is required. IC Role / Device Role / Timing Role: Primary shunt reference in feedback loops of precision DAC output stages and voltage calibrators. Use Value: 5% tolerance and 28 Ω ZZT enable sub-0.1% absolute accuracy after one-point trim, meeting ANSI C12.1 Class 0.1 metering standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5936B-TP (Micro Commercial) | Same 30 V ±5%, DO-213AB package, but rated 1.0 W (not 1.5 W); RθJA = 150 °C/W; no MIL-PRF-19500 screening option. | Limited to lower-power consumer-grade supplies; unsuitable for sustained 1.5 W dissipation or high-reliability screening programs. | Select only for cost-sensitive, non-critical commercial applications where full 1.5 W rating and hermeticity are unnecessary. |
| SMBG5936B (ON Semiconductor) | 30 V ±5%, SMB package (surface-mount tabbed), 1.5 W rating, but RθJA = 100 °C/W on FR4; non-hermetic epoxy; no radiation hardness documentation. | Better thermal performance on large pads, but lacks hermetic seal and radiation tolerance - not qualified for aerospace or medical use. | Prefer for high-volume industrial controls where PCB area is constrained but radiation or long-term reliability is not mandated. |
Compared with 1N5936BUR-1/TR, the 1N5936B-TP offers lower cost but sacrifices 33% power headroom and screening capability, while the SMBG5936B trades hermetic reliability for improved thermal pad conduction - making the 1N5936BUR-1/TR uniquely suited for mission-critical, high-temperature, or radiation-exposed environments.
Availability
1N5936BUR-1/TR is available at Aetrix Electronics and suitable for industrial power supply regulation, medical instrument reference voltage generation, aerospace avionics biasing, and test & measurement equipment calibration requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N5936BUR-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 components.
The 1N5936BUR-1/TR belongs to Microsemi's legacy 1N59xxBUR-1 Zener series, engineered for high-density surface-mount applications demanding hermetic sealing, MIL-PRF-19500 screening, and extended temperature operation in harsh environments.
FAQ
What is the Zener voltage tolerance and test condition for 1N5936BUR-1/TR?
The 1N5936BUR-1/TR has a Zener voltage of 30 V with ±5% tolerance, measured at a test current (IZT) of 12.5 mA and end-cap temperature (TEC) maintained at 30 °C. Voltage is recorded 90 seconds after DC current application to ensure thermal stabilization, per Microsemi T4-LDS-0300-1 specification.
Is 1N5936BUR-1/TR RoHS compliant, and how is compliance indicated in the part number?
Yes, the 1N5936BUR-1/TR is RoHS compliant, denoted by the "e3" suffix in its full nomenclature (1N5936BUR-1 e3). The "TR" suffix indicates tape-and-reel packaging per EIA-481-B standard using 12 mm carrier tape - distinct from RoHS coding, which resides in the reliability level field.
Does 1N5936BUR-1/TR support MIL-PRF-19500 screening, and what does that entail?
Yes, 1N5936BUR-1/TR supports screening per MIL-PRF-19500, including temperature cycling, steady-state life testing, and hermeticity validation. Screening is optional and specified via reliability level codes (e.g., MQ, MX) in the part nomenclature - not included in the base 1N5936BUR-1/TR designation but available upon order configuration.
What is the maximum reverse leakage current for 1N5936BUR-1/TR, and at what voltage is it specified?
The maximum reverse leakage current (IR) for 1N5936BUR-1/TR is 1.0 µA, specified at a reverse voltage (VR) of 22.8 V - which equals 76% of its nominal Zener voltage (30 V). This value is guaranteed across the full operating temperature range and confirms low standby power consumption in shunt regulator topologies.
How does the DO-213AB (MELF) package of 1N5936BUR-1/TR compare thermally to axial DO-41 or tabbed SMB packages?
The DO-213AB package of 1N5936BUR-1/TR achieves RθJA = 120 °C/W on FR4 (1 oz Cu), higher than SMB variants (~100 °C/W) but lower than DO-41 axial parts (~150 °C/W). Its metallurgically bonded tungsten slugs yield RθJEC = 40 °C/W - superior to both, enabling more efficient heat transfer to end caps or heatsinks in compact layouts.
1N5936BUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AB, MELF (Glass)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±5%
- Power - Max:
- 1.25 W
- Impedance (Max) (Zzt):
- 28 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 22.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB (MELF, LL41)
1N5936BUR-1/TR FAQ
1.How can I place an order for 1N5936BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5936BUR-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 1N5936BUR-1/TR reliable?
The price and inventory of 1N5936BUR-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 1N5936BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5936BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5936BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5936BUR-1/TR?
1N5936BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5936BUR-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 1N5936BUR-1/TR?
For technical support, including 1N5936BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5936BUR-1/TR requirements.
6.How does Aetrix verify that 1N5936BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5936BUR-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 1N5936BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5936BUR-1/TR?
All 1N5936BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5936BUR-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 1N5936BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5936BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5936BUR-1/TR Tags
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