My Inquiry
My Account
Microchip Technology 1N5529BUR-1/TR
- Part No.:
- 1N5529BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5529BUR-1/TR.pdf
- Description:
- DIODE ZENER 9.1V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,013
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5529BUR-1/TR from Microsemi is a surface-mount 4.3 V Zener diode in DO-213AA (SOD-80/MELF) package, rated for 500 mW steady-state power dissipation, with ±5% voltage tolerance, 22 Ω dynamic impedance at 20 mA test current, and maximum reverse leakage of 5 µA at 0.95 V. It serves as a precision voltage reference or shunt regulator in low-power analog monitoring circuits.
For engineers reviewing the 1N5529BUR-1/TR datasheet, 1N5529BUR-1/TR pinout, 1N5529BUR-1/TR application, or 1N5529BUR-1/TR equivalent, key selection criteria include Zener voltage stability over temperature (±0.055%/°C), hermetically sealed glass MELF construction, RoHS-compliant commercial-grade availability, and compatibility with automated SMT assembly per EIA-481-B tape-and-reel packaging.
Technical Context
This device operates in reverse-biased breakdown mode to maintain a stable 4.3 V reference across load variations from 0.25 mA to 20 mA. Its metallurgically bonded glass structure ensures low thermal resistance (100 °C/W junction-to-end-cap) and radiation hardness per MicroNote 050.
The 1N5529BUR-1/TR exhibits minimal capacitance (~2.5 pF typical), low forward voltage (≤1.1 V @ 200 mA), and is non-sensitive to ESD per MIL-STD-750 Method 1020 - enabling use in noise-critical sensor biasing and precision feedback paths without added filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.3 V @ 20 mA - stable regulation point for low-voltage reference applications |
| Power Dissipation PD | 0.5 W - supports continuous operation up to 50 °C ambient on FR4 board |
| Zener Impedance ZZT | 22 Ω @ IZT = 20 mA - ensures tight voltage regulation under varying load current |
| Reverse Leakage IR | 5 µA @ VR = 0.95 V - enables low-error biasing in high-impedance circuits |
| Temp. Coefficient αVZ | ±0.055 %/°C - minimizes drift across -65 to +175 °C operating range |
| Package | DO-213AA (SOD-80/MELF) - hermetically sealed glass surface-mount package with end-cap terminations |
| Forward Voltage VF | ≤1.1 V @ 200 mA - allows safe forward conduction during transient conditions |
Pinout & Package
DO-213AA (SOD-80/MELF) package: cylindrical glass body with metallized end caps; cathode identified by black band; polarity requires banded end to be positive relative to opposite end during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; forms return path for Zener current |
| Cathode (banded end) | Regulated output node | Provides stable 4.3 V when reverse-biased; connects to load or feedback network |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Enables long-term reliability in humid or corrosive environments without encapsulation degradation |
| Metallurgical bond interface | Reduces thermal resistance (RθJEC = 100 °C/W) for improved power handling at elevated temperatures |
| Low capacitance (2.5 pF typ.) | Minimizes signal coupling and phase shift in RF detector or timing feedback circuits |
| ESD immunity (MIL-STD-750 Method 1020) | Eliminates need for external protection in handheld or field-deployable instrumentation |
| Radiation hardness (MicroNote 050) | Supports operation in aerospace or nuclear instrumentation where TID > 100 krad is required |
Applications
| Industrial Sensor Signal Conditioning | Medical Instrumentation Reference |
|---|---|
Use Scenario: Biasing thermistor or bridge sensor networks in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 4.3 V excitation for ratiometric measurements. Use Value: ±0.055 %/°C tempco ensures <±0.5% full-scale error over -40 to +85 °C industrial range. |
Use Scenario: Precision voltage reference for ADC front-end in portable ECG monitors. IC Role / Device Role / Timing Role: Low-noise Zener source for analog front-end gain calibration and offset trimming. Use Value: 5 µA max reverse leakage avoids loading high-impedance electrode circuits at signal acquisition nodes. |
| Automotive Body Control Module (BCM) | Test & Measurement Equipment |
Use Scenario: Overvoltage clamp and reference in LIN bus transceiver power rails. IC Role / Device Role / Timing Role: Reverse-biased Zener regulating 4.3 V supply for internal LDO enable threshold. Use Value: Hermetic DO-213AA package withstands automotive thermal cycling (-40 to +125 °C) without parameter drift. |
Use Scenario: Calibration reference in handheld multimeter voltage ranges. IC Role / Device Role / Timing Role: Primary shunt reference for autoranging DC voltage measurement circuitry. Use Value: 22 Ω ZZT ensures <0.1% reading error across 10 µA–10 mA load variation in 3½-digit DMM design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A (ON Semiconductor) | Same 5.1 V nominal rating but 1 W power rating; DO-41 axial package; ±5% tolerance; 17 Ω ZZT | Requires through-hole PCB layout; higher power capability suits higher-current regulators | Select 1N4733A only if board space permits axial mounting and >500 mW dissipation is needed |
| BZX55C4V3 (Vishay) | Same 4.3 V, ±5%, DO-35 package; 22 Ω ZZT; 5 µA IR; but plastic encapsulation, not hermetic glass | Lacks radiation hardness and long-term humidity resistance; lower cost for consumer-grade designs | Choose BZX55C4V3 for cost-sensitive commercial products where hermeticity and radiation tolerance are not required |
Compared with 1N5529BUR-1/TR, the 1N4733A offers higher power but incompatible packaging, while the BZX55C4V3 matches electrical specs but sacrifices hermetic reliability and radiation performance - making 1N5529BUR-1/TR optimal for mission-critical SMT applications demanding long-term stability.
Availability
1N5529BUR-1/TR is available at Aetrix Electronics and suitable for industrial sensor conditioning, medical instrumentation reference, and automotive body control modules requiring stable component supply with guaranteed traceability and extended lifecycle support.
Supply support for 1N5529BUR-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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N5529BUR-1/TR belongs to Microsemi's legacy 1N52xxBUR-1 Zener series designed for surface-mount voltage regulation in harsh-environment systems where hermetic sealing, temperature stability, and radiation tolerance are critical.
FAQ
What is the Zener voltage tolerance for 1N5529BUR-1/TR?
The 1N5529BUR-1/TR has a nominal Zener voltage of 4.3 V with a ±5% tolerance, corresponding to the "B" suffix in its nomenclature. This means the actual measured VZ falls between 4.085 V and 4.515 V at 20 mA test current and 25 °C ambient temperature, as verified in the Electrical Characteristics table on page 3 of the Microsemi datasheet T4-LDS-0232-1.
Is 1N5529BUR-1/TR RoHS compliant?
Yes, the 1N5529BUR-1/TR is RoHS compliant (designated by the "e3" suffix in full part number variants), but only in commercial-grade versions. The RoHS-compliant annealed matte-tin plating meets lead-free soldering requirements and is qualified per MIL-STD-750 Method 2026, as stated in the Mechanical and Packaging section of the datasheet.
What is the maximum power dissipation of 1N5529BUR-1/TR and under what conditions?
The 1N5529BUR-1/TR has a steady-state power dissipation rating of 0.5 W. This applies when the end cap temperature remains below 125 °C or ambient temperature stays below 50 °C on an FR4 PCB with 1 oz copper and the recommended footprint, as defined in the Maximum Ratings table on page 1 of the Microsemi datasheet.
Does 1N5529BUR-1/TR require derating at elevated temperatures?
Yes, the 1N5529BUR-1/TR must be derated linearly above 50 °C ambient temperature, following the curve in Figure 2 of the datasheet. At 100 °C ambient, its usable power drops to approximately 0.25 W, and it reaches zero dissipation at 150 °C - a direct consequence of its 250 °C/W junction-to-ambient thermal resistance on standard FR4 layout.
Can 1N5529BUR-1/TR be used in radiation-intensive environments?
Yes, the 1N5529BUR-1/TR is inherently radiation hard per Microsemi MicroNote 050, validated for total ionizing dose (TID) resilience beyond 100 krad(Si). This stems from its metallurgically bonded glass construction and process controls, making it suitable for satellite power subsystems and nuclear instrumentation where parametric stability under irradiation is mandatory.
1N5529BUR-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):
- 9.1 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8.2 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
1N5529BUR-1/TR FAQ
1.How can I place an order for 1N5529BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5529BUR-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 1N5529BUR-1/TR reliable?
The price and inventory of 1N5529BUR-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 1N5529BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5529BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5529BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5529BUR-1/TR?
1N5529BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5529BUR-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 1N5529BUR-1/TR?
For technical support, including 1N5529BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5529BUR-1/TR requirements.
6.How does Aetrix verify that 1N5529BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5529BUR-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 1N5529BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5529BUR-1/TR?
All 1N5529BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5529BUR-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 1N5529BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5529BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5529BUR-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…
