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Microchip Technology 1N5274BUR-1/TR
- Part No.:
- 1N5274BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5274BUR-1/TR.pdf
- Description:
- DIODE ZENER 130V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,693
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Product details
Overview
1N5274BUR-1/TR from Microsemi is a surface-mount 130 V, ±5% tolerance Zener diode in a hermetically sealed DO-213AA (SOD80/MLL34) MELF glass package, rated for 500 mW steady-state power dissipation, with 1100 Ω dynamic impedance at 0.95 mA test current and +0.110 %/°C temperature coefficient - used for precision voltage regulation in high-reliability analog reference and power supply feedback circuits.
For engineers reviewing the 1N5274BUR-1/TR datasheet, 1N5274BUR-1/TR pinout, 1N5274BUR-1/TR application, or 1N5274BUR-1/TR equivalent, key selection criteria include Zener voltage stability across -65°C to +175°C junction temperature, low leakage (<0.1 µA at 99 V), minimal capacitance (~4.5 pF), and MIL-PRF-19500 upscreening capability for aerospace and defense systems.
Technical Context
This device operates as a reverse-biased voltage reference, maintaining stable 130 V regulation over 0.95 mA test current (IZT) and up to 185 mA maximum Zener current (IZM), with breakdown knee current (IZK) at 0.25 mA. Its metallurgically bonded construction ensures mechanical robustness and thermal stability under thermal cycling.
The +0.110 %/°C temperature coefficient reflects predictable voltage drift above 100 V nominal Zener range, and its 100 °C/W junction-to-end-cap thermal resistance enables reliable operation when end cap temperature remains below 125 °C - critical for high-temperature industrial sensor conditioning and avionics power monitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 130 V ±5% at 0.95 mA - defines precise regulation point for high-voltage reference rails. |
| Power Dissipation (PD) | 0.5 W - limits continuous thermal load on PCB; requires derating above 50 °C ambient or 125 °C end cap. |
| Dynamic Impedance (ZZT) | 1100 Ω at IZT = 0.95 mA - determines output voltage variation under load current changes. |
| Reverse Leakage (IR) | <0.1 µA at VR = 99 V - ensures negligible error current in high-impedance bias networks. |
| Temp Coefficient (αVZ) | +0.110 %/°C - quantifies predictable positive drift above 100 V, enabling compensation in precision designs. |
| Junction Temp Range | -65 °C to +175 °C - supports operation in extended-environment applications including downhole tools and engine control units. |
| Capacitance (Typ) | ~4.5 pF - minimizes signal coupling and phase shift in RF-coupled or fast-switching regulator feedback paths. |
Pinout & Package
DO-213AA (SOD80/MLL34) metallurgically bonded glass MELF package with two end-cap terminals; cathode identified by single band - operated with banded end positive relative to opposite end during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Banded End) | Regulated Output Terminal | Connected to higher-potential node; carries reverse current during Zener conduction. |
| Anode (Unbanded End) | Reference Ground Node | Connected to lower-potential circuit return; establishes reference potential for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass Encapsulation | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments. |
| Metallurgical Bond Construction | Eliminates wire bonds and interfacial delamination risks - improves reliability under shock/vibration. |
| MIL-PRF-19500 Screening Option | Enables qualification for military/aerospace use with verified lot traceability and burn-in testing. |
| Low ESD Sensitivity | Non-sensitive per MIL-STD-750 Method 1020 - simplifies handling without special ESD controls. |
| Radiation Hardness | Inherently radiation tolerant per Microsemi MicroNote 050 - suitable for space-grade analog references. |
Applications
| High-Voltage Power Supply Feedback | Aerospace Reference Voltage Source |
|---|---|
|
Use Scenario: Regulating output of isolated DC-DC converters operating at >100 V output. IC Role / Device Role / Timing Role: Zener diode provides stable 130 V reference for optocoupler feedback loop error amplification. Use Value: Maintains ±1% output accuracy over -55°C to +125°C ambient due to predictable +0.110 %/°C drift and low leakage. |
Use Scenario: Generating stable bias voltage for radiation-hardened op-amps in satellite telemetry front-ends. IC Role / Device Role / Timing Role: Functions as primary voltage reference in analog signal conditioning chain requiring TID tolerance & long-term stability. Use Value: Hermetic DO-213AA package and inherent radiation hardness eliminate need for shielding or redundancy in LEO missions. |
| Industrial Sensor Excitation Circuit | Downhole Oilfield Instrumentation |
|
Use Scenario: Providing excitation voltage for high-impedance piezoresistive pressure sensors in process control systems. IC Role / Device Role / Timing Role: Serves as precision shunt regulator to maintain constant 130 V across sensor bridge, independent of supply ripple. Use Value: 1100 Ω dynamic impedance ensures <10 mV deviation under 10 µA sensor bias current variation. |
Use Scenario: Voltage clamping and reference generation in high-temperature logging tools deployed at >150 °C wellbore depths. IC Role / Device Role / Timing Role: Operates as ruggedized Zener clamp protecting downstream ADC inputs from transients while maintaining calibration reference. Use Value: -65°C to +175°C junction rating and metallurgical bond integrity prevent parametric shift during thermal cycling in geothermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5274B-1/TR | Same 130 V Zener voltage and ±5% tolerance, but in axial DO-35 (DO-204AH) package - no MELF form factor. | Lacks hermetic seal and MIL-PRF-19500 screening option; unsuitable for high-vibration or vacuum environments. | Select when board space allows axial mounting and radiation/military screening is not required. |
| BZX55C130-TR | 130 V ±5%, 500 mW, but in DO-35 plastic package - higher leakage (>1 µA at 99 V) and no radiation hardness claim. | Not rated for >150 °C junction; plastic encapsulation degrades under UV/radiation exposure. | Choose only for cost-sensitive commercial applications where environmental robustness is secondary. |
Compared with 1N5274B-1/TR and BZX55C130-TR, the 1N5274BUR-1/TR delivers superior thermal stability, hermetic reliability, and radiation tolerance - making it the sole choice for mission-critical high-temperature or space-grade voltage reference designs.
Availability
1N5274BUR-1/TR is available at Aetrix Electronics and suitable for high-reliability power supply feedback, aerospace reference voltage generation, and downhole instrumentation requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N5274BUR-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 1N52xxBUR-1 series was designed specifically to deliver JEDEC-compatible Zener performance in hermetic MELF packages for applications demanding long-term stability, thermal resilience, and MIL-spec compliance.
FAQ
What is the Zener voltage tolerance of the 1N5274BUR-1/TR?
The 1N5274BUR-1/TR has a nominal Zener voltage of 130 V with a ±5% tolerance, confirmed in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0232-1 datasheet. This tolerance applies at 0.95 mA test current and 25 °C ambient, and is guaranteed for all units within the B-suffix designation.
Does the 1N5274BUR-1/TR support MIL-PRF-19500 screening?
Yes - the 1N5274BUR-1/TR is eligible for up-screening per MIL-PRF-19500, as explicitly stated in the FEATURES section of the datasheet. Screening options depend on reliability level suffix (e.g., MQ, MX, MV) and must be specified at order time; standard commercial units ship without screening unless requested.
What is the maximum reverse leakage current for the 1N5274BUR-1/TR?
The 1N5274BUR-1/TR exhibits a maximum reverse leakage current of 0.1 µA at VR = 99 V, per the Electrical Characteristics table. This ultra-low leakage is consistent across the 100–200 V portion of the 1N52xxBUR-1 family and supports high-impedance reference applications.
Can the 1N5274BUR-1/TR be used in reflow soldering processes?
Yes - the 1N5274BUR-1/TR supports lead-free reflow with a maximum solder temperature of 260 °C for 10 seconds, as specified in the MAXIMUM RATINGS table. Its metallurgically bonded glass construction withstands thermal shock typical of Type 3 reflow profiles without cracking or parameter shift.
Is the 1N5274BUR-1/TR RoHS compliant?
Yes - the "e3" RoHS-compliant plating option is available for commercial-grade 1N5274BUR-1/TR units, as noted in the PART NOMENCLATURE section. RoHS compliance applies only to commercial versions; screened or high-reliability variants retain tin-lead plating unless otherwise specified.
1N5274BUR-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):
- 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/TR FAQ
1.How can I place an order for 1N5274BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5274BUR-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 1N5274BUR-1/TR reliable?
The price and inventory of 1N5274BUR-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 1N5274BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5274BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5274BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5274BUR-1/TR?
1N5274BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5274BUR-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 1N5274BUR-1/TR?
For technical support, including 1N5274BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5274BUR-1/TR requirements.
6.How does Aetrix verify that 1N5274BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5274BUR-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 1N5274BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5274BUR-1/TR?
All 1N5274BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5274BUR-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 1N5274BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5274BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5274BUR-1/TR Tags
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