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Microchip Technology 1N4753AUR/TR
- Part No.:
- 1N4753AUR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N4753AUR/TR.pdf
- Description:
- DIODE ZENER 36V 1W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,309
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Product details
Overview
1N4753AUR/TR from Microsemi is a surface-mount 1.0 W glass Zener diode with a nominal Zener voltage of 36 V ±5%, 7.0 mA test current, 50 Ω dynamic impedance at IZT, 5 μA maximum reverse leakage at 27.4 V, and operating temperature range of −65 °C to +175 °C. It serves as a precision voltage reference or shunt regulator in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N4753AUR/TR datasheet, 1N4753AUR/TR pinout, 1N4753AUR/TR application, or 1N4753AUR/TR equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (130 °C/W on FR4), surge current rating (1000 mA), hermetic DO-213AB MELF package, and RoHS-compliant e3 marking.
Technical Context
This device operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its glass hermetic DO-213AB MELF package ensures low parasitic capacitance, high reliability, and radiation hardness per MicroNote 050.
It delivers regulated output with 50 Ω dynamic impedance at 7.0 mA test current and supports steady-state dissipation of 1.0 W up to 125 °C end-cap temperature. Reverse leakage remains ≤5 μA at 27.4 V, and forward voltage is ≤1.2 V at 200 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±5% - defines precise regulation point for feedback or clamping |
| Test Current (IZT) | 7.0 mA - operating point where VZ and ZZT are specified |
| Dynamic Impedance (ZZT) | 50 Ω at IZT - determines voltage variation under load transients |
| Max Reverse Leakage (IR) | 5 μA at 27.4 V - ensures low standby power loss in high-impedance bias networks |
| Power Dissipation | 1.0 W at TEC ≤ 125 °C - sets thermal design margin on PCB with recommended pad layout |
| Operating Temperature | −65 °C to +175 °C - enables use in aerospace, downhole, and industrial environments |
| Surge Current (IS) | 1000 mA (½-sine, 1/120 s) - withstands short-duration overvoltage events |
Pinout & Package
DO-213AB glass MELF package: cylindrical, leadless, hermetically sealed, cathode indicated by single band. Terminals are axial - anode and cathode accessed at opposite ends of the cylinder.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener regulation terminal | Connected to higher potential side during regulation; polarity must be observed to avoid forward conduction |
| Anode (unbanded end) | Reference/return terminal | Typically tied to system ground or feedback node; completes Zener current path |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Enables operation at 175 °C and provides inherent radiation hardness per MicroNote 050 |
| ±5% Zener voltage tolerance (A suffix) | Reduces calibration overhead in mid-precision voltage reference designs |
| Low 50 Ω dynamic impedance at 7 mA | Minimizes output voltage deviation under ±10% load current variation |
| RoHS-compliant e3 marking | Meets environmental compliance without derating or performance trade-off |
| 1000 mA surge current rating | Provides transient overvoltage resilience without external TVS supplementation |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing error amplifier reference in isolated flyback or forward converter feedback networks. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 36 V threshold for optocoupler-driven regulation. Use Value: Maintains ±1.8 V regulation window over −40 °C to +125 °C ambient, reducing output drift vs. resistor-divider-only references. |
Use Scenario: Biasing and clamping analog front-end stages in pressure or temperature transmitters. IC Role / Device Role / Timing Role: Overvoltage clamp protecting op-amp inputs from ESD or wiring faults. Use Value: Limits input to 36 V with <5 μA leakage at 27.4 V, preserving signal integrity in high-impedance sensor bridges. |
| Aerospace Power Distribution Monitoring | Downhole Oilfield Instrumentation |
Use Scenario: Voltage supervision in DC bus monitoring circuits for avionics power modules. IC Role / Device Role / Timing Role: Precision Zener reference for ADC input scaling in fault-detection subsystems. Use Value: Stable 36 V reference across −65 °C to +175 °C enables reliable trip-point detection without thermal recalibration. |
Use Scenario: Regulating local supply rails in high-temperature logging tools deployed at >150 °C wellbore environments. IC Role / Device Role / Timing Role: High-reliability shunt regulator maintaining 36 V rail for ASIC biasing. Use Value: Hermetic DO-213AB package prevents moisture ingress and parametric shift under sustained 175 °C operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4753A | Same electrical specs but DO-41 axial-leaded package; no tape-and-reel (TR) option; not surface-mountable | Requires through-hole PCB assembly; unsuitable for high-density layouts or automated SMT lines | Select 1N4753AUR/TR when board space, thermal management, or production automation demands SMT compatibility |
| SMAJ4753A | Same Zener voltage and tolerance, but plastic SMA package; higher thermal resistance (190 °C/W); lower surge rating (500 mA) | Limited to lower-temperature industrial applications; less suitable for aerospace or downhole use | Choose SMAJ4753A only if cost sensitivity outweighs hermeticity, radiation hardness, or 175 °C capability |
Compared with 1N4753A and SMAJ4753A, the 1N4753AUR/TR uniquely combines SMT compatibility, hermetic glass construction, 175 °C operation, and 1000 mA surge rating-making it the sole option for high-reliability, high-temperature, automated production scenarios requiring all four attributes.
Availability
1N4753AUR/TR is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, aerospace monitoring systems, and downhole instrumentation requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for 1N4753AUR/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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and high-temperature analog and mixed-signal components.
The 1N4753AUR/TR belongs to Microsemi's surface-mount Zener diode family designed for mission-critical voltage regulation where hermetic sealing, wide temperature operation, and surge resilience are mandatory.
FAQ
What is the Zener voltage tolerance for 1N4753AUR/TR?
The "A" suffix in 1N4753AUR/TR specifies a nominal Zener voltage of 36 V with a tolerance of ±5%. This is confirmed in Note 1 of the datasheet and applies across the full operating temperature range. Tighter tolerances (±2% or ±1%) require C or D suffixes, which are not present in this part number. The 1N4753AUR/TR maintains this tolerance without derating under standard thermal conditions.
Is 1N4753AUR/TR compatible with lead-free reflow soldering?
Yes, the 1N4753AUR/TR carries the e3 suffix, indicating RoHS compliance and qualification for lead-free soldering at 260 °C for up to 10 seconds. Its DO-213AB glass MELF package and annealed matte-tin plating meet MIL-STD-750 Method 2026. Thermal resistance to ambient is 130 °C/W on FR4 with the recommended footprint, supporting robust reflow profile adherence.
What is the maximum steady-state power dissipation for 1N4753AUR/TR?
The 1N4753AUR/TR is rated for 1.00 W steady-state power dissipation at end-cap temperature (TEC) ≤ 125 °C or ambient temperature (TA) ≤ 45 °C when mounted on FR4 with 1 oz copper and the recommended pad layout. Derating begins above these temperatures, as shown in Figure 1 of the datasheet. Exceeding 1.0 W risks parametric shift or catastrophic failure.
Does 1N4753AUR/TR have radiation hardness certification?
Yes, the 1N4753AUR/TR exhibits inherent radiation hardness per MicroNote 050, a documented Microsemi technical note confirming performance stability under total ionizing dose (TID) exposure. This stems from its hermetic glass MELF construction-not a post-fabrication screening. No additional qualification testing is required to claim this property for the 1N4753AUR/TR.
How is polarity marked on the 1N4753AUR/TR package?
The 1N4753AUR/TR uses a single cathode band on the glass MELF body to indicate polarity. The banded end is the cathode and must be connected to the higher-potential node during Zener regulation. The unbanded end is the anode. This marking is consistent across all DO-213AB Zeners in the 1N47xxAUR series and is visible under standard optical inspection.
1N4753AUR/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):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 50 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 27.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB (MELF, LL41)
1N4753AUR/TR FAQ
1.How can I place an order for 1N4753AUR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4753AUR/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 1N4753AUR/TR reliable?
The price and inventory of 1N4753AUR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4753AUR/TR is usually 5 days.
3.What payment methods are accepted for 1N4753AUR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4753AUR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4753AUR/TR?
1N4753AUR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4753AUR/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 1N4753AUR/TR?
For technical support, including 1N4753AUR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4753AUR/TR requirements.
6.How does Aetrix verify that 1N4753AUR/TR is sourced from the original manufacturer or authorized distributors?
All 1N4753AUR/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 1N4753AUR/TR meets industry standards.
7.What is the process for return or replacement of 1N4753AUR/TR?
All 1N4753AUR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4753AUR/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 1N4753AUR/TR part is unused and in its original packaging.
Return procedure for 1N4753AUR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4753AUR/TR Tags
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MM5Z5V1ST1G
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