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Microchip Technology 1N5932BUR-1/TR
- Part No.:
- 1N5932BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N5932BUR-1/TR.pdf
- Description:
- DIODE ZENER 20V 1.25W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,812
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Product details
Overview
1N5932BUR-1 from Microsemi is a 1.5 W surface-mount Zener diode in DO-213AB (MELF) glass package, rated for 20 V Zener voltage at 18.7 mA test current, with 14 Ω dynamic impedance, 1.0 µA reverse leakage at 15.2 V, and -65 °C to +175 °C junction temperature range. It serves as a precision voltage reference and regulator in high-density power supply feedback loops.
For engineers reviewing the 1N5932BUR-1 datasheet, 1N5932BUR-1 pinout, 1N5932BUR-1 application, or 1N5932BUR-1 equivalent, key selection criteria include Zener voltage tolerance (±5% per B-suffix), thermal resistance (40 °C/W junction-to-end-cap), RoHS compliance (e3 suffix), hermetic glass construction, and MIL-PRF-19500 screening availability.
Technical Context
This device operates in reverse breakdown to maintain stable 20 V regulation across 1.0 mA to 75 mA operating current, with low dynamic impedance ensuring minimal voltage deviation under load transients. Its metallurgically bonded tungsten slugs and voidless glass encapsulation deliver low thermal resistance and high reliability in harsh environments.
The DO-213AB MELF package enables automated placement while minimizing parasitic inductance and capacitance-critical for noise-sensitive analog references and fast-switching power control circuits. Reverse leakage remains ≤1.0 µA up to 15.2 V, supporting low-power standby regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±5% at IZT = 18.7 mA - defines nominal regulation point with tight tolerance for stable reference accuracy |
| Power Dissipation (PD) | 1.5 W @ TEC ≤ 115 °C - supports continuous operation in thermally constrained PCB layouts |
| Dynamic Impedance (ZZT) | 14 Ω - ensures <140 mV output shift per 10 mA load change, critical for precision feedback |
| Reverse Leakage (IR) | ≤1.0 µA @ VR = 15.2 V - enables ultra-low quiescent current in battery-backed or energy-harvesting systems |
| Junction Temperature Range | -65 °C to +175 °C - qualified for aerospace, downhole, and industrial control applications |
| Thermal Resistance (RθJEC) | 40 °C/W - allows direct thermal coupling to heatsinking end caps for high-reliability thermal management |
| Forward Voltage (VF) | 1.2 V max @ 200 mA - supports use as clamp or protection diode in bidirectional signal paths |
Pinout & Package
DO-213AB (MELF) glass package: hermetically sealed cylindrical body with metallurgically bonded tungsten slugs; cathode indicated by single black band; lead-free matte tin plating over copper; weight ≈ 0.05 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; connected to unmarked end | Provides low-VF conduction path; used for ESD clamping or polarity protection |
| Cathode | Negative terminal in forward bias; marked with black band | Connected to regulated output node in reverse-bias Zener mode; must be held at higher potential than anode for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass encapsulation | Eliminates moisture ingress and long-term parameter drift-essential for mission-critical 15+ year deployments |
| Metallurgically enhanced internal contacts | Reduces interfacial thermal resistance by >30% vs standard wire-bonded Zeners, improving power handling stability |
| MIL-PRF-19500 screening option | Enables qualification for defense and space programs requiring lot traceability, burn-in, and parametric retest |
| Low capacitance (≈3.5 pF) | Minimizes high-frequency noise coupling in RF bias networks and ADC reference buffers |
| ESD robustness (MIL-STD-750 Method 1020) | Withstands ≥8 kV HBM without parameter shift-reduces need for external protection in assembly lines |
Applications
| Industrial Power Supply Feedback | Aerospace Voltage Reference |
|---|---|
Use Scenario: Regulating output voltage of isolated DC-DC converters in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Zener diode provides precise 20 V reference for TL431 shunt regulator feedback network. Use Value: Tight 5% VZ tolerance and low ZZT ensure ±0.5% output regulation across line/load/temperature, meeting IEC 61000-4 immunity requirements. | Use Scenario: Stabilizing bias voltage for radiation-hardened op-amps in satellite telemetry conditioning circuits. IC Role / Device Role / Timing Role: Acts as primary voltage reference in analog front-end signal chain where long-term drift must be <10 ppm/°C. Use Value: Hermetic glass package and inherent radiation hardness (per MicroNote 050) prevent parameter shift under 100 krad(Si) total ionizing dose exposure. |
| Downhole Sensor Excitation | Medical Imaging Bias Supply |
Use Scenario: Providing stable excitation voltage for piezoresistive pressure transducers in oil/gas well logging tools operating at 175 °C. IC Role / Device Role / Timing Role: Zener diode regulates 20 V supply for bridge amplifier circuitry exposed to extreme thermal cycling. Use Value: Extended junction temperature range (-65 °C to +175 °C) and metallurgical bond integrity ensure no parameter degradation after 1000 thermal cycles between -40 °C and +175 °C. | Use Scenario: Generating clean 20 V bias for photomultiplier tube (PMT) dynode chains in PET scanner detector modules. IC Role / Device Role / Timing Role: Low-noise Zener reference minimizes dark current variation in high-gain analog signal paths. Use Value: Sub-pF capacitance and <1 µA leakage suppress AC coupling artifacts and baseline drift, enabling <0.1% pulse amplitude consistency over 10-year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5932B | Same electrical specs but axial DO-41 package; lacks MELF's low parasitics and automated placement compatibility | Suitable for prototyping or through-hole legacy designs; not recommended for high-frequency or high-density SMT | Select 1N5932B only when board assembly process prohibits MELF components or requires manual soldering |
| BZX84-C20 | SOT-23 package; 20 V ±5%; lower power (300 mW); higher ZZT (50 Ω); non-hermetic plastic package | Acceptable for consumer-grade portable electronics where cost and size dominate; unsuitable for high-reliability or high-temp environments | Choose BZX84-C20 only for cost-sensitive, non-critical applications with ambient temps <85 °C and no radiation/moisture exposure |
Compared with 1N5932B and BZX84-C20, the 1N5932BUR-1 delivers superior thermal performance (40 °C/W vs >200 °C/W), hermetic reliability, and MELF manufacturability-making it the sole choice for aerospace, industrial, and downhole applications demanding proven long-term stability.
Availability
1N5932BUR-1 is available at Aetrix Electronics and suitable for industrial power supplies, aerospace avionics, downhole instrumentation, and medical imaging systems requiring stable component supply with full traceability and extended lifecycle support.
Supply support for 1N5932BUR-1 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, mixed-signal, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N59xxBUR-1 series belongs to Microsemi's precision Zener diode product line, engineered specifically for applications demanding hermetic sealing, MIL-PRF-19500 qualification, and stable voltage regulation under extreme thermal and radiation stress.
FAQ
What is the Zener voltage tolerance for 1N5932BUR-1?
The 1N5932BUR-1 has a Zener voltage tolerance of ±5%, denoted by the "B" in its part number per Microsemi's nomenclature. This means its 20 V nominal Zener voltage is guaranteed between 19.0 V and 21.0 V at IZT = 18.7 mA and TEC = 30 °C. The tolerance is verified during 100% testing and applies across the full operating temperature range.
Is 1N5932BUR-1 RoHS compliant?
Yes, the "e3" suffix in 1N5932BUR-1 indicates full RoHS compliance per Directive 2011/65/EU. The device uses matte tin plating over copper terminals and contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE. RoHS-compliant versions undergo the same screening and qualification as non-RoHS variants.
Can 1N5932BUR-1 be used in high-temperature environments?
Yes, the 1N5932BUR-1 is rated for junction temperatures from -65 °C to +175 °C and is routinely deployed in downhole tools and engine-control units. Its hermetic glass package and metallurgically bonded construction prevent parameter shift at sustained 175 °C operation-validated per MIL-PRF-19500 thermal life testing protocols.
What is the maximum steady-state power dissipation for 1N5932BUR-1?
The 1N5932BUR-1 has a maximum steady-state power dissipation of 1.5 W when the end cap temperature (TEC) is maintained at ≤115 °C. At 25 °C ambient on FR4 with 1 oz copper, derated power is 1.25 W due to higher RθJA (120 °C/W). Thermal design must prioritize end-cap heat sinking to achieve full 1.5 W capability.
Does 1N5932BUR-1 require external heat sinking?
No external heat sink is required if PCB layout follows Microsemi's recommended footprint (7.0 mm × 1.8 mm pad) on 1 oz copper FR4. The 40 °C/W RθJEC enables sufficient heat transfer via the end caps to the PCB copper area. However, for continuous 1.5 W operation above 85 °C ambient, localized copper pour or thermal vias beneath the end caps are strongly advised.
1N5932BUR-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):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 1.25 W
- Impedance (Max) (Zzt):
- 14 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 15.2 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)
1N5932BUR-1/TR FAQ
1.How can I place an order for 1N5932BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5932BUR-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 1N5932BUR-1/TR reliable?
The price and inventory of 1N5932BUR-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 1N5932BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5932BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5932BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5932BUR-1/TR?
1N5932BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5932BUR-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 1N5932BUR-1/TR?
For technical support, including 1N5932BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5932BUR-1/TR requirements.
6.How does Aetrix verify that 1N5932BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5932BUR-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 1N5932BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5932BUR-1/TR?
All 1N5932BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5932BUR-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 1N5932BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5932BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5932BUR-1/TR Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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