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Microchip Technology 1N6012BUR-1/TR
- Part No.:
- 1N6012BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N6012BUR-1/TR.pdf
- Description:
- DIODE ZENER 33V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,514
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Product details
Overview
1N6012BUR-1/TR from Microsemi is a surface-mount 500 mW Zener diode with nominal Zener voltage of 33 V, ±5% tolerance (B suffix), 88 mA maximum Zener current (IZM), and DO-213AA (MLL34/SOD80) MELF glass package. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N6012BUR-1/TR datasheet, 1N6012BUR-1/TR pinout, 1N6012BUR-1/TR application, or 1N6012BUR-1/TR equivalent, key selection factors include its 33 V regulation at 5 mA test current, 700 Ω dynamic impedance at IZT, 0.1 µA reverse leakage at 25 V, +0.094 %/°C temperature coefficient, and RoHS-compliant matte-tin end-cap plating.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with Zener voltage specified at 5 mA test current (IZT) and characterized up to 88 mA maximum dc current (IZM). Its DO-213AA hermetically sealed glass package provides inherent radiation hardness and ESD insensitivity per MIL-STD-750 Method 1020.
Thermal performance is defined by 300 °C/W junction-to-ambient thermal resistance on FR4 board with 1 oz Cu, and 150 °C/W junction-to-end-cap resistance. The cathode band marking indicates polarity for operation with banded end positive during regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V ±5% at 5 mA - stable reference point for precision voltage clamping and regulation |
| Power Dissipation | 0.5 W at 25 °C ambient - defines maximum continuous power handling before thermal derating |
| Zener Impedance (ZZT) | 700 Ω at 5 mA - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | 0.1 µA at 25 V - ensures minimal standby current in high-impedance bias networks |
| Temp. Coefficient (αVZ) | +0.094 %/°C - quantifies drift magnitude over operating temperature range |
| Max Regulator Current (IZM) | 88 mA - sets upper limit for safe continuous Zener conduction without exceeding PD |
| Forward Voltage (VF) | 1.1 V at 200 mA - relevant for forward-conduction fault conditions or dual-use circuit paths |
Pinout & Package
DO-213AA (SOD80 / MLL34) MELF glass package: cylindrical hermetically sealed body with tin-lead or RoHS-compliant matte-tin plated end caps; cathode identified by single band; weight 0.04 g; dimensions A = 1.60–1.70 mm, B = 3.30–3.70 mm, C = 0.41–0.55 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or lower-potential rail during Zener regulation |
| Cathode (banded end) | Regulated output node | Provides stable 33 V output when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Enables operation from −65 °C to +175 °C junction temperature with no moisture ingress risk |
| Internal metallurgical bonds | Ensures long-term reliability and low parameter drift under thermal cycling stress |
| RoHS-compliant matte-tin plating | Supports lead-free reflow soldering at 260 °C for 10 s without degradation |
| Low capacitance design | Minimizes signal coupling in high-frequency bias networks (see Figure 2) |
| Radiation-hardened structure | Meets requirements for space-grade applications per MicroNote 050 |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side regulation loop. IC Role / Device Role / Timing Role: Zener diode providing precise 33 V reference to optocoupler input or error amplifier. Use Value: Maintains ±5% output regulation accuracy across line/load/temperature variations due to tight VZ tolerance and low ZZT. | Use Scenario: Clamping transient surges on 24 V industrial control bus lines. IC Role / Device Role / Timing Role: Two-terminal shunt protector diverting excess energy to ground when bus exceeds 33 V. Use Value: Limits peak voltage to 33 V ±5% with 0.1 µA leakage below clamp threshold, preserving signal integrity. |
| Programmable Logic Controller Input Protection | Test Equipment Voltage Calibration Standard |
Use Scenario: Protecting digital input pins of PLC modules against field-wiring faults. IC Role / Device Role / Timing Role: Standby Zener element absorbing induced transients before they reach sensitive CMOS inputs. Use Value: Withstands repeated 1 kV ESD events (MIL-STD-750 Method 1020) and exhibits no parameter shift after stress. | Use Scenario: Serving as traceable 33 V reference in benchtop multimeter calibration fixtures. IC Role / Device Role / Timing Role: Primary voltage standard referenced against NIST-traceable sources. Use Value: Delivers <±0.094 %/°C drift and <700 Ω dynamic impedance-enabling sub-0.1% calibration uncertainty at 25 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6012UR-1/TR (Microchip) | Same 33 V, ±5%, DO-213AA package but rated at 0.4 W; higher ZZT (800 Ω) and lower IZM (75 mA) | Suitable for lower-power bias networks where 0.5 W margin is not required | Select when cost sensitivity outweighs need for full 0.5 W headroom |
| BZX84-C33 (Diodes Inc.) | SOT-23 package (not MELF); 33 V ±5%, 300 mW; higher leakage (5 µA @ 25 V); different thermal profile | Better suited for PCB space-constrained consumer designs, not high-reliability industrial use | Choose only if footprint compatibility and RoHS compliance are prioritized over hermetic sealing and radiation hardness |
Compared with 1N6012UR-1/TR and BZX84-C33, the 1N6012BUR-1/TR delivers superior thermal robustness (0.5 W rating, 300 °C/W RθJA), hermetic reliability, and tighter leakage (0.1 µA), making it preferred for mission-critical industrial and aerospace regulation tasks.
Availability
1N6012BUR-1/TR is available at Aetrix Electronics and suitable for industrial power supplies, programmable logic controller input protection, and test equipment voltage calibration requiring stable component supply and long-lifecycle support.
Supply support for 1N6012BUR-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 components for aerospace, defense, and industrial markets.
The 1N6012BUR-1/TR belongs to Microsemi's legacy DO-213AA Zener diode family, engineered for stable voltage regulation in harsh environments where hermetic sealing, radiation tolerance, and wide temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N6012BUR-1/TR?
The 1N6012BUR-1/TR has a nominal Zener voltage of 33 V with ±5% tolerance, indicated by the "B" suffix in its part number per Microsemi's nomenclature. This means the actual measured VZ at 5 mA test current falls between 31.35 V and 34.65 V across the qualified lot, ensuring predictable clamping behavior in precision reference designs.
Does the 1N6012BUR-1/TR support lead-free soldering processes?
Yes, the 1N6012BUR-1/TR is offered in RoHS-compliant versions with matte-tin end-cap plating, qualified for lead-free reflow soldering at 260 °C for 10 seconds per MIL-STD-750 Method 2026. The "e3" suffix denotes RoHS compliance, and this version is explicitly approved for commercial-grade assembly without compromising bond integrity or electrical parameters.
What is the maximum Zener current (IZM) for the 1N6012BUR-1/TR?
The maximum Zener current IZM for the 1N6012BUR-1/TR is 88 mA at 25 °C ambient, calculated based on its 0.5 W power rating and upper-tolerance Zener voltage (34.65 V). This value is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0228-1 Rev. 1 and defines the absolute upper limit for continuous reverse-bias conduction without exceeding thermal limits.
How does the temperature coefficient affect the 1N6012BUR-1/TR's performance?
The 1N6012BUR-1/TR has a positive temperature coefficient of +0.094 %/°C, meaning its Zener voltage increases by approximately 31 mV per °C rise in junction temperature. This characteristic must be factored into designs operating across −65 °C to +175 °C, especially in unregulated environments where thermal drift could impact reference accuracy beyond ±5% tolerance band.
Is the 1N6012BUR-1/TR suitable for high-reliability aerospace applications?
Yes, the 1N6012BUR-1/TR is designed for high-reliability use: its hermetic DO-213AA glass package, internal metallurgical bonds, and qualification to MIL-PRF-19500 screening levels (with appropriate prefix) make it suitable for aerospace applications. Radiation hardness per MicroNote 050 and ESD insensitivity per MIL-STD-750 Method 1020 further validate its suitability for mission-critical systems.
1N6012BUR-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):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 88 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 25 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
1N6012BUR-1/TR FAQ
1.How can I place an order for 1N6012BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6012BUR-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 1N6012BUR-1/TR reliable?
The price and inventory of 1N6012BUR-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 1N6012BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N6012BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6012BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6012BUR-1/TR?
1N6012BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6012BUR-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 1N6012BUR-1/TR?
For technical support, including 1N6012BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6012BUR-1/TR requirements.
6.How does Aetrix verify that 1N6012BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N6012BUR-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 1N6012BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N6012BUR-1/TR?
All 1N6012BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N6012BUR-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 1N6012BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N6012BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6012BUR-1/TR Tags
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