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Microchip Technology 1N4752APE3/TR12
- Part No.:
- 1N4752APE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4752APE3/TR12.pdf
- Description:
- DIODE ZENER 33V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,122
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Product details
Overview
1N4752APE3/TR12 from Microsemi is a 33 V, 1 W axial-lead Zener diode in DO-41 plastic package with ±5% voltage tolerance, 7.5 mA test current, and 45 Ω dynamic impedance at IZT, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4752APE3/TR12 datasheet, 1N4752APE3/TR12 pinout, 1N4752APE3/TR12 application, or 1N4752APE3/TR12 equivalent, key selection factors include Zener voltage accuracy, thermal resistance (45 °C/W junction-to-lead), surge current rating (1000 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR12).
Technical Context
This device operates in reverse breakdown to maintain stable 33 V output across a wide current range (1–1000 mA), with low knee impedance (27 Ω at 0.25 mA) ensuring sharp regulation onset. Its DO-41 package provides flexible through-hole mounting and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack requirement.
Designed for operation from –65 °C to +150 °C, it delivers 1.0 W steady-state power at lead temperature <105 °C (3/8″ from body) or ambient <45 °C on FR4 board, with forward voltage ≤1.2 V at 200 mA and ESD immunity per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V ±5% at 7.5 mA - defines precise regulation point for feedback references |
| Power Dissipation | 1.0 W at TL < 105 °C - sets maximum continuous thermal load in lead-mounted designs |
| Dynamic Impedance (ZZT) | 45 Ω at 7.5 mA - determines output voltage stability under varying load current |
| Max Reverse Current (IR) | 5 μA at 25.1 V - ensures low leakage below regulation threshold |
| Surge Current (ISM) | 1000 mA (½-sine, 1/120 s) - supports transient overvoltage clamping capability |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design with standard lead length (10 mm) |
| Operating Temperature | –65 °C to +150 °C - suitable for industrial and automotive under-hood environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to lower-potential node; reverse-biased during regulation |
| Cathode | Banded lead | Connected to regulated output node; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N47xxA series mechanical and electrical specs |
| RoHS-compliant "e3" suffix | Matte-tin terminal plating replaces Sn/Pb, meeting EU Directive 2011/65/EU |
| Tape-and-reel packaging | TR12 designation indicates EIA-296–compliant reel for automated assembly |
| Level 1 moisture sensitivity | No dry pack required before PCB assembly per IPC/JEDEC J-STD-020B |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - no special handling needed |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifiers. IC Role / Device Role / Timing Role: Voltage reference element providing fixed 33 V reference point. Use Value: ±5% tolerance and 45 Ω ZZT ensure tight output regulation across line/load variations. | Use Scenario: Clamping transient spikes on DC rails in motor drives or industrial controllers. IC Role / Device Role / Timing Role: Shunt protector diverting excess energy when rail exceeds 33 V. Use Value: 1000 mA surge rating and sharp knee (27 Ω at 0.25 mA) enable reliable transient suppression. |
| Voltage Monitor Threshold | Signal Level Translation |
Use Scenario: Detecting undervoltage or overvoltage conditions in battery management systems. IC Role / Device Role / Timing Role: Precision threshold detector using Zener conduction onset. Use Value: Low 5 μA leakage at 25.1 V ensures clean switching edge and minimal quiescent error. | Use Scenario: Biasing logic interfaces between mixed-voltage domains (e.g., 33 V to 5 V). IC Role / Device Role / Timing Role: Clamp diode establishing defined high-level voltage for input protection. Use Value: 1.2 V forward drop at 200 mA allows predictable level shift without active circuitry. |
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" RoHS suffix; Sn/Pb plating; same VZ, IZT, ZZT, package | Not compliant with EU RoHS Directive 2011/65/EU; requires Pb-containing solder process | Select only for legacy Pb-based assembly or non-RoHS markets |
| MMSZ5252ET1G | Surface-mount SOD-123 package; 33 V ±5%; 200 mW power; 30 Ω ZZT at 5 mA | Lower power rating limits use to signal-level regulation; not suitable for 1 W dissipation | Choose for space-constrained PCBs where thermal load is ≤200 mW |
Compared with 1N4752A and MMSZ5252ET1G, the 1N4752APE3/TR12 uniquely combines 1 W power handling, RoHS compliance, tape-and-reel automation support, and DO-41 mechanical robustness - making it optimal for industrial power supply and protection designs requiring full regulatory compliance and manufacturability.
Availability
1N4752APE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and voltage reference designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for 1N4752APE3/TR12 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 applications.
The 1N47xxAP series was engineered for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal stability, ESD resilience, and JEDEC-standard mechanical compatibility.
FAQ
What is the Zener voltage tolerance for 1N4752APE3/TR12?
The 1N4752APE3/TR12 has a nominal Zener voltage of 33 V with a tolerance of ±5%, as indicated by the "A" suffix in the part number per JEDEC registration. This tolerance applies at 7.5 mA test current and 25 °C lead temperature, ensuring predictable regulation performance in feedback and reference circuits where moderate accuracy suffices.
Does 1N4752APE3/TR12 require dry packing before PCB assembly?
No, the 1N4752APE3/TR12 is moisture sensitivity level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored and assembled without dry pack or baking. Its void-free thermosetting epoxy body and Level 1 classification eliminate humidity-related popcorning risk during reflow or wave soldering, simplifying manufacturing logistics.
What is the maximum surge current rating for 1N4752APE3/TR12?
The 1N4752APE3/TR12 supports 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 enables reliable clamping of short-duration transients in DC power rails, such as those induced by inductive load switching or ESD events.
Is 1N4752APE3/TR12 compatible with lead-free soldering processes?
Yes, the 1N4752APE3/TR12 features RoHS-compliant annealed matte-tin plating ("e3" suffix) and is rated for solder temperatures up to 260 °C for 10 seconds, fully supporting lead-free reflow and wave soldering per JEDEC standards. Its terminals meet MIL-STD-750 Method 2026 for solderability.
What package type does 1N4752APE3/TR12 use?
The 1N4752APE3/TR12 uses the DO-41 (also designated DO-204AL) axial-lead plastic package. It features a cylindrical epoxy body with tinned leads, cathode identified by a color band, and mechanical dimensions conforming to JEDEC standards for manual or automated through-hole insertion.
1N4752APE3/TR12 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:
- ±5%
- 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)
1N4752APE3/TR12 FAQ
1.How can I place an order for 1N4752APE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4752APE3/TR12 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 1N4752APE3/TR12 reliable?
The price and inventory of 1N4752APE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4752APE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4752APE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4752APE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4752APE3/TR12?
1N4752APE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4752APE3/TR12 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 1N4752APE3/TR12?
For technical support, including 1N4752APE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4752APE3/TR12 requirements.
6.How does Aetrix verify that 1N4752APE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4752APE3/TR12 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 1N4752APE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4752APE3/TR12?
All 1N4752APE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4752APE3/TR12, 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 1N4752APE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4752APE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4752APE3/TR12 Tags
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