My Inquiry
My Account
Microchip Technology 1N5274BUR-1
- Part No.:
- 1N5274BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5274BUR-1.pdf
- Description:
- DIODE ZENER 130V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,044
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5274BUR-1 from Microsemi is a 130 V, 500 mW surface-mount Zener diode in DO-213AA (SOD80) metallurgically bonded glass package, rated for ±5% voltage tolerance at 20 mA test current, with 1100 Ω dynamic impedance and +0.110 %/°C temperature coefficient-used for precision voltage regulation in high-reliability power supply feedback loops.
For engineers reviewing the 1N5274BUR-1 datasheet, 1N5274BUR-1 pinout, 1N5274BUR-1 application, or 1N5274BUR-1 equivalent, key selection criteria include Zener voltage stability over temperature, low leakage (<0.1 µA at 99 V), hermetic MELF packaging for harsh environments, and compatibility with MIL-PRF-19500 up-screening options.
Technical Context
This device operates as a reverse-biased voltage reference, maintaining regulation across 0.25 mA to 0.95 mA Zener current range (IZK to IZT), with breakdown knee behavior characterized by ZZK = 4500 Ω at 0.25 mA and ZZT = 1100 Ω at 20 mA. Its metallurgical bond ensures stable thermal performance under thermal cycling.
The DO-213AA package enables surface-mount assembly while delivering 100 °C/W junction-to-end-cap thermal resistance and operation from –65 °C to +175 °C, supporting aerospace and industrial applications requiring radiation hardness per MicroNote 050 and ESD immunity per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 130 V at 20 mA - precise regulation point for high-voltage reference circuits |
| Power Dissipation (PD) | 0.5 W - limits maximum continuous Zener current to ~3.85 mA at 130 V |
| Zener Impedance (ZZT) | 1100 Ω at 20 mA - defines voltage variation under load changes in feedback networks |
| Reverse Leakage (IR) | <0.1 µA at 99 V - ensures minimal error current in high-impedance bias networks |
| Temp. Coefficient (αVZ) | +0.110 %/°C - quantifies drift of 143 mV/°C near 130 V, critical for temp-stable references |
| Package | DO-213AA (SOD80/MELF) - hermetically sealed glass surface-mount form factor with end-cap terminations |
| Forward Voltage (VF) | 1.1 V max at 200 mA - supports use as clamp or protection diode in forward conduction |
Pinout & Package
DO-213AA (SOD80) metallurgically bonded glass MELF package with two end-cap terminals; cathode identified by single band; polarity requires banded end to be positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener anode connection in reverse bias | Connected to higher-potential node in regulation circuit; must be biased positive relative to anode |
| Anode (unbanded end) | Zener cathode connection in reverse bias | Connected to lower-potential node (e.g., ground or feedback divider tap); completes Zener current path |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Enables operation at 175 °C junction temperature and prevents moisture-induced parameter shift |
| Metallurgical bonding | Eliminates wire bonds to improve thermal conductivity and reliability under thermal shock |
| MIL-PRF-19500 up-screening option | Supports qualification to military screening levels (JANTX/JANTXV/JANS) via suffix coding |
| Low capacitance (typ. 1.5 pF) | Minimizes high-frequency loading in RF detector or timing circuits using Zener bias |
| Radiation hardness (per MicroNote 050) | Validated for total ionizing dose tolerance >100 krad(Si), suitable for space-grade designs |
Applications
| High-Voltage Power Supply Feedback | Aerospace Voltage Reference |
|---|---|
Use Scenario: Regulating output of 150 V DC-DC converter in satellite power bus. IC Role / Device Role / Timing Role: Zener reference element in optocoupler-isolated feedback loop. Use Value: 130 V rating allows direct sensing without resistor divider, reducing component count and drift errors. | Use Scenario: Providing stable bias voltage for radiation-hardened op-amp input stage in payload telemetry system. IC Role / Device Role / Timing Role: Precision voltage reference source with known +0.110 %/°C drift. Use Value: Hermetic DO-213AA package and radiation hardness ensure long-term stability in LEO orbit conditions. |
| Industrial Sensor Excitation | Test Equipment Calibration Standard |
Use Scenario: Biasing high-impedance piezoresistive pressure sensor bridge at 130 V in oil-field downhole tool. IC Role / Device Role / Timing Role: Stable excitation voltage source tolerant of –55 °C to +150 °C ambient. Use Value: –65 °C to +175 °C operating range and <0.1 µA leakage preserve sensor signal integrity. | Use Scenario: Serving as traceable 130 V reference in automated calibration bench for multimeters and DMMs. IC Role / Device Role / Timing Role: Primary Zener standard in metrology-grade voltage divider chain. Use Value: ±5% tolerance and low dynamic impedance enable repeatable 0.1% calibration accuracy over time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5274B-1 | Same electrical specs but in axial DO-35 package; no MELF geometry or hermetic seal | Limited to non-hermetic, non-MIL-specified commercial PCBs; unsuitable for high-reliability or high-temp reflow | Select when cost-sensitive prototyping requires through-hole assembly and environmental robustness is not required |
| SMF130A | 130 V, 400 W peak power TVS diode in SMC package; Zener-like clamping but not rated for continuous regulation | Designed for transient suppression only; lacks specified Zener impedance, tempco, or leakage at 99 V | Select only for surge protection-not for precision voltage reference or continuous regulation duty |
Compared with 1N5274B-1 and SMF130A, the 1N5274BUR-1 uniquely combines hermetic MELF packaging, MIL-PRF-19500 up-screening capability, and verified 130 V regulation with low drift-making it the sole choice for continuous, high-stability Zener reference in mission-critical systems.
Availability
1N5274BUR-1 is available at Aetrix Electronics and suitable for high-reliability power supply feedback, aerospace voltage reference, and industrial sensor excitation requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N5274BUR-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, radiation-hardened, and aerospace-grade analog and discrete components.
The 1N52xxBUR-1 series was designed specifically to deliver JEDEC-standard Zener regulation in hermetic surface-mount form, targeting defense, space, and industrial applications demanding long-term parametric stability and MIL-spec compliance.
FAQ
What is the Zener voltage tolerance for 1N5274BUR-1?
The 1N5274BUR-1 has a nominal Zener voltage of 130 V with a ±5% tolerance, corresponding to the "B" suffix in its nomenclature. This means the actual measured VZ at 20 mA falls between 123.5 V and 136.5 V under standard test conditions at 25 °C.
Does 1N5274BUR-1 support MIL-PRF-19500 screening?
Yes, the 1N5274BUR-1 supports MIL-PRF-19500 up-screening via optional reliability level suffixes (e.g., MQ, MX, MV, MSP). The base "UR-1" designation indicates the commercial-grade metallurgically bonded surface-mount version, and factory-configured variants meet JANTX or JANS requirements.
What is the maximum reverse leakage current for 1N5274BUR-1?
The maximum reverse leakage current for 1N5274BUR-1 is 0.1 µA when tested at 99 V (76% of nominal 130 V), per the Electrical Characteristics table on page 3 of the T4-LDS-0232-1 datasheet. This low leakage supports high-impedance bias network accuracy.
Can 1N5274BUR-1 be used in place of 1N5274B-1?
No-while both share identical electrical specifications, the 1N5274BUR-1 uses a DO-213AA (SOD80) MELF package with hermetic sealing and metallurgical bonding, whereas 1N5274B-1 is in axial DO-35. They are not mechanically or thermally interchangeable; PCB layout and reflow profile differ significantly.
What is the thermal resistance of 1N5274BUR-1?
The 1N5274BUR-1 has a junction-to-end-cap thermal resistance (RθJEC) of 100 °C/W and a junction-to-ambient resistance (RθJA) of 250 °C/W when mounted on FR4 with 1 oz copper and the recommended footprint. Derating begins above 50 °C ambient or 125 °C end-cap temperature.
1N5274BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 130 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1100 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 99 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
1N5274BUR-1 FAQ
1.How can I place an order for 1N5274BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5274BUR-1 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 1N5274BUR-1 reliable?
The price and inventory of 1N5274BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5274BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5274BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5274BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5274BUR-1?
1N5274BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5274BUR-1 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 1N5274BUR-1?
For technical support, including 1N5274BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5274BUR-1 requirements.
6.How does Aetrix verify that 1N5274BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5274BUR-1 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 1N5274BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5274BUR-1?
All 1N5274BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5274BUR-1, 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 1N5274BUR-1 part is unused and in its original packaging.
Return procedure for 1N5274BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5274BUR-1 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…
