My Inquiry
My Account
Microchip Technology 1N5244BUR-1/TR
- Part No.:
- 1N5244BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5244BUR-1/TR.pdf
- Description:
- DIODE ZENER 14V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:319
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5244BUR-1/TR from Microsemi is a surface-mount 14 V, 5% tolerance Zener diode in DO-213AA (SOD-80/MELF) package, rated for 500 mW steady-state power dissipation, with 9.0 Ω dynamic impedance at 20 mA test current and 0.1 µA max reverse leakage at 9.5 V. It serves as a precision voltage reference or shunt regulator in low-power analog circuits.
For engineers reviewing the 1N5244BUR-1/TR datasheet, 1N5244BUR-1/TR pinout, 1N5244BUR-1/TR application, or 1N5244BUR-1/TR equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (100 °C/W junction-to-end-cap), low capacitance (<2 pF typical), RoHS-compliant plating, and MIL-PRF-19500 upscreening eligibility.
Technical Context
This device operates in reverse breakdown to maintain stable voltage across varying load currents (IZK = 0.25 mA to IZM ≈ 55 mA). Its metallurgically bonded glass construction ensures hermetic sealing and radiation hardness per MicroNote 050, with minimal temperature-induced drift (αVZ = +0.082 %/°C).
The DO-213AA package enables high-reliability surface mounting on FR4 boards with defined thermal derating above 50 °C ambient or 125 °C end-cap temperature, and supports tape-and-reel delivery (TR suffix) per EIA-481-B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14 V ±5% at 20 mA - defines nominal regulation point with tight tolerance for reference stability |
| Power Dissipation (PD) | 0.5 W - limits continuous thermal stress; requires derating above 50 °C ambient |
| Dynamic Impedance (ZZT) | 9.0 Ω at IZT = 20 mA - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | 0.1 µA at VR = 9.5 V - ensures minimal quiescent current in standby regulation |
| Temp. Coefficient (αVZ) | +0.082 %/°C - quantifies voltage drift over temperature; positive slope above ~6 V |
| Junction Temp. Range | -65 to +175 °C - supports operation in extended industrial and aerospace environments |
| Forward Voltage (VF) | 1.1 V max at 200 mA - relevant for polarity verification and forward-bias protection checks |
Pinout & Package
DO-213AA (SOD-80/MELF) hermetically sealed glass package with tin-lead or RoHS-compliant matte-tin end-cap plating; cathode indicated by single band; no discrete pins-device has two symmetrical end-cap terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener regulation terminal | Connected to higher potential during regulation; defines polarity for proper biasing |
| Anode (unbanded end) | Reference/return terminal | Connected to circuit ground or lower potential; completes Zener current path |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded construction | Enables hermetic sealing and intrinsic radiation hardness without external shielding |
| MIL-PRF-19500 upscreening option | Supports military/aerospace qualification paths via reliability level suffixes (MQ/MX/MV/MSP) |
| Low capacitance (~1.5 pF typical) | Minimizes signal coupling and noise injection in high-frequency reference or filtering applications |
| ESD insensitivity (MIL-STD-750 Method 1020) | Eliminates need for handling precautions beyond standard static-safe protocols |
| RoHS-compliant commercial version | Meets EU environmental directives without compromising electrical performance or reliability |
Applications
| Low-Power Voltage Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 14 V bias for op-amp input stages or ADC reference buffers in battery-powered instrumentation. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise DC operating point independent of supply variation. Use Value: Maintains 14 V ±0.7 V over -55 to +125 °C with <1% line regulation error across 1–50 mA load range. | Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 14 V in automotive body-control modules. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting excess energy to ground before damage threshold. Use Value: Limits voltage to ≤14.7 V at 10 mA surge while surviving 8/20 µs transients per ISO 7637-2. |
| Current-Source Bias Generator | Temperature-Stable Sensor Excitation |
Use Scenario: Generating constant 1 mA bias current for photodiode amplifiers using series resistor + 1N5244BUR-1/TR. IC Role / Device Role / Timing Role: Fixed-voltage node enabling predictable current through external resistor. Use Value: Delivers 1.00 ±0.05 mA over 0–70 °C with <0.1% drift due to matched αVZ and resistor TCR. | Use Scenario: Supplying excitation voltage to platinum RTD bridges in industrial process transmitters. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source for ratiometric measurement stability. Use Value: Achieves <±0.05 °C equivalent error over –40 to +85 °C due to +0.082 %/°C αVZ compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | Same 12 V nominal rating but 1 W power rating in DO-41 package; 22 Ω ZZT; non-MELF form factor | Requires larger PCB footprint and lacks radiation hardness or MIL upscreening capability | Select when higher power margin is needed and surface-mount MELF packaging is not required |
| BZX55C14 | 14 V, 5% tolerance in DO-35 axial package; 25 Ω ZZT; no MIL-PRF-19500 screening path | Not suitable for automated SMT assembly; higher thermal resistance limits high-temp operation | Choose for cost-sensitive prototyping where tape-and-reel SMT delivery is unnecessary |
Compared with 1N4742A and BZX55C14, the 1N5244BUR-1/TR offers superior thermal performance in compact MELF packaging, verified radiation tolerance, and direct support for high-reliability screening-making it optimal for space-constrained, mission-critical analog regulation.
Availability
1N5244BUR-1/TR is available at Aetrix Electronics and suitable for low-power voltage reference, overvoltage clamping, and sensor excitation applications requiring stable component supply, consistent Zener voltage tolerance, and long-term obsolescence management.
Supply support for 1N5244BUR-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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N52xxBUR-1 series belongs to Microsemi's legacy Zener regulator product line, engineered specifically for surface-mount voltage reference and regulation in harsh-environment systems where hermeticity, radiation tolerance, and MIL-spec compliance are mandatory.
FAQ
What is the Zener voltage tolerance for 1N5244BUR-1/TR?
The 1N5244BUR-1/TR has a nominal Zener voltage of 14 V with a guaranteed tolerance of ±5%, as indicated by the "B" suffix in the part number per Microsemi's nomenclature. This tolerance applies at 20 mA test current and 25 °C ambient temperature, and remains valid across the full operating junction temperature range of –65 to +175 °C.
Is 1N5244BUR-1/TR RoHS compliant?
Yes, the 1N5244BUR-1/TR is RoHS compliant (designated by the "e3" suffix in full nomenclature variants), with annealed matte-tin end-cap plating. RoHS compliance applies only to commercial-grade versions; MIL-spec screened versions use tin-lead plating and are exempt from RoHS requirements.
What package type does 1N5244BUR-1/TR use?
The 1N5244BUR-1/TR uses the DO-213AA package-also known as SOD-80 or MELF (Metal Electrode Leadless Face)-a hermetically sealed cylindrical glass package with metallurgically bonded end caps. Its dimensions are 1.60–1.70 mm diameter and 3.30–3.70 mm length.
Can 1N5244BUR-1/TR be used in high-reliability military applications?
Yes, the 1N5244BUR-1/TR supports MIL-PRF-19500 upscreening when ordered with appropriate reliability level suffixes (e.g., MQ, MX, MV, MSP). The base commercial part is qualified to commercial standards, but factory-screened variants meet stringent military environmental and life-test requirements.
What is the maximum reverse leakage current for 1N5244BUR-1/TR?
The maximum reverse leakage current for 1N5244BUR-1/TR is 0.1 µA, measured at VR = 9.5 V (70% of nominal VZ) and TA = 25 °C. This low leakage ensures minimal power loss and high impedance in standby regulation modes, critical for battery-operated systems.
1N5244BUR-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):
- 14 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 10 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
1N5244BUR-1/TR FAQ
1.How can I place an order for 1N5244BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5244BUR-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 1N5244BUR-1/TR reliable?
The price and inventory of 1N5244BUR-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 1N5244BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5244BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5244BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5244BUR-1/TR?
1N5244BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5244BUR-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 1N5244BUR-1/TR?
For technical support, including 1N5244BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5244BUR-1/TR requirements.
6.How does Aetrix verify that 1N5244BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5244BUR-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 1N5244BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5244BUR-1/TR?
All 1N5244BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5244BUR-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 1N5244BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5244BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5244BUR-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…
