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Microchip Technology 1N4752E3/TR13
- Part No.:
- 1N4752E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4752E3/TR13.pdf
- Description:
- DIODE ZENER 33V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,723
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Product details
Overview
1N4752E3/TR13 from Microsemi is a 1.0 W axial-lead silicon Zener diode with nominal Zener voltage of 33 V, ±5% tolerance (A-suffix), 7.5 mA test current, and 45 Ω dynamic impedance at IZT. It operates from –65 °C to +150 °C and is RoHS-compliant (e3 suffix), packaged in DO-41 (DO-204AL) plastic case for voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N4752E3/TR13 datasheet, 1N4752E3/TR13 pinout, 1N4752E3/TR13 application, or 1N4752E3/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (45 °C/W junction-to-lead), surge current rating (1000 mA), reverse leakage (<5 µA at 25.1 V), and compatibility with FR4 PCB mounting using standard 1 oz copper pads.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown mode, maintaining stable 33 V regulation across a wide current range (0.25 mA to 135 mA). Its Zener knee occurs at 0.25 mA with 27 Ω impedance, enabling reliable low-current regulation without external biasing.
The DO-41 package provides flexible axial-lead mounting and achieves 105 °C/W junction-to-ambient thermal resistance on FR4 with defined copper pad geometry (4 mm², 1 mm trace width, 25 mm length), supporting continuous 1.0 W dissipation only when lead temperature remains below 105 °C or ambient stays under 45 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V ±5% at 7.5 mA - defines precise regulation point for feedback networks |
| Power Dissipation | 1.0 W at TL < 105 °C - sets maximum steady-state thermal load on leads |
| Dynamic Impedance (ZZT) | 45 Ω at 7.5 mA - determines output voltage variation under load transients |
| Reverse Leakage Current | <5 µA at 25.1 V - ensures minimal quiescent current in standby regulation |
| Surge Current (ISM) | 1000 mA (½-sine, 1/120 s) - supports transient overvoltage clamping capability |
| Operating Temperature | –65 °C to +150 °C - enables use in automotive under-hood and industrial control environments |
| Thermal Resistance (Junction-to-Lead) | 45 °C/W - allows direct thermal modeling from lead temperature to junction |
Pinout & Package
Package: DO-41 (DO-204AL) - axial-lead, void-free thermosetting epoxy case meeting UL94V-0; cathode indicated by band; polarity critical for Zener operation (banded end positive during regulation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to circuit ground or lower-potential node during regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Banded end; connected to regulated rail; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N4752A series | Ensures cross-manufacturer interchangeability and standardized test conditions |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and simplifies SMT handling logistics |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces need for special ESD controls during assembly and testing |
| RoHS-compliant matte-tin plating | Supports lead-free reflow soldering up to 260 °C for 10 seconds |
| Plastic encapsulation (P-suffix) | Delivers lower thermal resistance vs. glass-body alternatives for same JEDEC number |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback paths via optocoupler interface. IC Role / Device Role / Timing Role: Zener reference providing stable 33 V threshold to TL431 or optocoupler LED drive circuit. Use Value: Maintains ±5% output regulation across line/load/temperature with <5 µA leakage minimizing idle current error. | Use Scenario: Clamps transient surges on 24 V DC rails in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Two-terminal shunt protector absorbing 1000 mA surge pulses without failure. Use Value: Limits voltage to ≤33 V during 1/120 s transients, protecting downstream logic and analog inputs. |
| Programmable Voltage Reference | DC-DC Converter Trim Circuit |
Use Scenario: Sets precision reference for adjustable linear regulators (e.g., LM317) in lab equipment power supplies. IC Role / Device Role / Timing Role: Stable 33 V source enabling 1.25–37 V output adjustment range. Use Value: Delivers 45 Ω dynamic impedance to minimize output ripple sensitivity to load changes. | Use Scenario: Fine-tunes output voltage of fixed 3.3 V or 5 V DC-DC modules via resistor divider feedback. IC Role / Device Role / Timing Role: Zener element in parallel with top feedback resistor to shift regulation point. Use Value: Enables ±5% accurate 33 V trim offset without requiring dedicated reference ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4752A | No e3 suffix; Sn/Pb terminations; non-RoHS compliant | Restricted to legacy or non-RoHS production; identical electrical specs | Select when lead-free compliance is not required and cost is prioritized |
| MMSZ5252ET1G | Surface-mount SOD-123; 33 V ±5%; 200 mW rating; 30 Ω ZZT | Lower power, smaller footprint; unsuitable for >200 mW continuous loads | Choose for space-constrained PCBs where thermal budget permits reduced power |
Compared with 1N4752A and MMSZ5252ET1G, the 1N4752E3/TR13 offers full 1.0 W dissipation in through-hole form with RoHS compliance and proven high-surge robustness-making it optimal for industrial power supplies needing reliability and regulatory alignment.
Availability
1N4752E3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage protection circuits, and programmable voltage reference designs requiring stable component supply and long-term lifecycle support.
Supply support for 1N4752E3/TR13 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 analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N47xxA series was designed specifically for general-purpose voltage regulation in cost-sensitive, high-volume power systems-balancing precision, ruggedness, and manufacturability in JEDEC-standard packages.
FAQ
What is the Zener voltage tolerance of the 1N4752E3/TR13?
The 1N4752E3/TR13 has a nominal Zener voltage of 33 V with ±5% tolerance, as indicated by the "A" suffix in its base part number per JEDEC registration. This tolerance applies at 7.5 mA test current and 25 °C lead temperature, and is maintained across its full operating temperature range of –65 °C to +150 °C.
Does the 1N4752E3/TR13 require dry packing before reflow soldering?
No, the 1N4752E3/TR13 is moisture sensitivity level (MSL) 1 per IPC/JEDEC J-STD-020B, meaning it does not absorb sufficient moisture during normal factory handling to require dry packing or baking prior to reflow. This simplifies manufacturing flow and reduces process risk compared to higher-MSL discrete components.
What is the maximum surge current rating for the 1N4752E3/TR13?
The 1N4752E3/TR13 is rated for a maximum surge current (ISM) of 1000 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating supports transient overvoltage suppression in industrial power rails and protects downstream circuitry from short-duration energy spikes.
Can the 1N4752E3/TR13 be used in surface-mount designs?
No-the 1N4752E3/TR13 uses a DO-41 axial-lead package and is not compatible with surface-mount assembly. For SMT equivalents, consider Microsemi's MLL4752A (SOD-80) or ON Semiconductor's MMSZ5252ET1G (SOD-123), both offering 33 V Zener regulation but with lower power ratings and different thermal profiles than the 1N4752E3/TR13.
What is the forward voltage specification for the 1N4752E3/TR13?
The forward voltage of the 1N4752E3/TR13 is specified as a maximum of 1.2 V at 200 mA forward current. This parameter is relevant only during forward-biased operation (e.g., accidental polarity reversal or ESD testing); the device is intended for reverse-bias Zener regulation, where forward conduction is avoided in normal use.
1N4752E3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±10%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 25.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4752E3/TR13 FAQ
1.How can I place an order for 1N4752E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4752E3/TR13 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 1N4752E3/TR13 reliable?
The price and inventory of 1N4752E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4752E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4752E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4752E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4752E3/TR13?
1N4752E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4752E3/TR13 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 1N4752E3/TR13?
For technical support, including 1N4752E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4752E3/TR13 requirements.
6.How does Aetrix verify that 1N4752E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4752E3/TR13 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 1N4752E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4752E3/TR13?
All 1N4752E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4752E3/TR13, 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 1N4752E3/TR13 part is unused and in its original packaging.
Return procedure for 1N4752E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4752E3/TR13 Tags
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MM5Z5V1ST1G
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