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Microchip Technology 1N4752PE3/TR8
- Part No.:
- 1N4752PE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4752PE3/TR8.pdf
- Description:
- DIODE ZENER 33V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,808
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Product details
Overview
1N4752PE3/TR8 from Microsemi is a 1.0 W, 33 V, ±5% tolerance silicon Zener diode in DO-41 plastic package, rated for 7.5 mA test current, 45 Ω dynamic impedance at IZT, and 135 mA maximum regulator current at TA = 50°C. It provides stable voltage regulation in power supply reference, overvoltage protection, and biasing circuits across industrial temperature range.
For engineers reviewing the 1N4752PE3/TR8 datasheet, 1N4752PE3/TR8 pinout, 1N4752PE3/TR8 application, or 1N4752PE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (45 °C/W junction-to-lead), surge current rating (1000 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR8).
Technical Context
This device operates in reverse breakdown to maintain a stable 33 V reference across a wide current range (1–135 mA), with sharp knee characteristics verified by dual-point Zener impedance measurement per MicroNote 202. Its DO-41 plastic encapsulation delivers lower thermal resistance than glass-body variants and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
The 1N4752PE3/TR8 features a cathode band polarity indicator, 1.2 V forward voltage max at 200 mA, and is rated for 260 °C soldering (10 s). It supports MIL-PRF-19500 screening when prefixed (e.g., MQ, MX) and is compatible with standard axial-lead PCB mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V ±5% at IZT = 7.5 mA - defines nominal regulation point with tight production control |
| Power Dissipation | 1.0 W at TL < 105°C (3/8″ lead length) - sets maximum continuous DC power under defined thermal condition |
| Dynamic Impedance (ZZT) | 45 Ω at IZT = 7.5 mA - indicates low AC impedance for stable regulation under varying load |
| Max Regulator Current (IZM) | 135 mA at TA = 50°C - determines maximum safe DC current before thermal runaway |
| Surge Current (ISM) | 1000 mA (½-sine, 1/120 s) - specifies short-duration overload capability for transient suppression |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design using lead conduction path, not ambient convection |
| Reverse Leakage | 5 μA max at VR = 25.1 V - ensures minimal quiescent current in standby regulation mode |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with void-free UL94V-0 epoxy body, tin-lead or RoHS-compliant matte-tin plating, and cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node; forward-biased operation irrelevant for Zener use |
| Cathode | Banded end | Connected to higher-potential node; reverse-biased operation enables Zener breakdown regulation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N4752A series | Industry-standard footprint and electrical behavior ensuring interoperability and sourcing flexibility |
| RoHS-compliant "e3" suffix | Matte-tin terminal plating meeting EU Directive 2011/65/EU without lead or hazardous substances |
| Tape-and-reel "TR8" packaging | EIA-296 compliant 8 mm carrier tape for automated SMT placement compatibility despite axial form factor |
| Level 1 moisture sensitivity | No dry pack required prior to assembly - reduces handling cost and process complexity |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for special ESD handling in manufacturing |
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: Zener diode acting as precision shunt reference to set output voltage threshold. Use Value: Maintains ±5% output accuracy over 1–135 mA operating range and -65°C to +150°C temperature span. | Use Scenario: Clamping transient surges on DC rails in automotive ECUs or industrial PLCs. IC Role / Device Role / Timing Role: Shunt protector diverting excess energy above 33 V to ground during voltage spikes. Use Value: Withstands 1000 mA surge current (1/120 s) while holding clamped voltage within specification. |
| Bias Network Stabilization | Signal-Level Voltage Clamp |
Use Scenario: Providing stable bias point for op-amp input stages or transistor amplifier networks. IC Role / Device Role / Timing Role: Passive voltage reference establishing fixed DC operating point independent of supply variation. Use Value: Low 45 Ω dynamic impedance minimizes regulation error under changing load currents. | Use Scenario: Limiting analog sensor signal swing to prevent ADC input saturation in data acquisition systems. IC Role / Device Role / Timing Role: Signal-path clamp limiting peak voltage to 33 V + Vf during fault conditions. Use Value: Sharp knee impedance profile ensures fast turn-on and predictable clamping threshold. |
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; no TR8 tape-and-reel packaging | Requires leaded assembly process; unsuitable for RoHS-compliant production | Select when legacy Sn/Pb process is used and tape-and-reel not needed |
| MMBZ5255BS-7-F | Surface-mount SOD-123 package; 33 V ±5%; 225 mW PD; 30 Ω ZZT | Lower power rating limits use to low-current references; not suitable for 135 mA regulation | Select for space-constrained PCBs where full 1 W dissipation is unnecessary |
Compared with 1N4752A and MMBZ5255BS-7-F, the 1N4752PE3/TR8 uniquely combines 1 W power handling, RoHS compliance, tape-and-reel automation support, and industry-standard DO-41 mechanical compatibility-making it optimal for high-reliability, medium-power, through-hole production environments.
Availability
1N4752PE3/TR8 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and bias network stabilization requiring stable component supply across industrial, automotive, and embedded control applications.
Supply support for 1N4752PE3/TR8 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, RF, and discrete components for aerospace, defense, and industrial markets.
The 1N4752PE3/TR8 belongs to Microsemi's legacy 1N47xxAP Zener series, designed specifically for robust, low-cost, through-hole voltage regulation in harsh-environment power systems.
FAQ
What is the Zener voltage tolerance of the 1N4752PE3/TR8?
The 1N4752PE3/TR8 has a nominal Zener voltage of 33 V with a tolerance of ±5%, as confirmed by the "A" suffix in its JEDEC designation and specified in Microsemi's REV C datasheet. This tolerance applies at 7.5 mA test current and 25°C lead temperature. The "e3" suffix denotes RoHS compliance but does not affect voltage tolerance.
Does the 1N4752PE3/TR8 require dry packing before reflow?
No, the 1N4752PE3/TR8 is moisture sensitivity level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored and assembled without dry pack or baking. Its plastic DO-41 encapsulation and void-free epoxy body inherently limit moisture ingress, simplifying handling and reducing manufacturing overhead.
What is the maximum continuous current the 1N4752PE3/TR8 can regulate at room temperature?
At ambient temperature (TA) = 25°C, the 1N4752PE3/TR8 can regulate up to 135 mA continuously, as derived from its 1.0 W power rating and 33 V Zener voltage (P = V × I → I = 1.0 W / 33 V ≈ 30 mA), but the datasheet explicitly lists IZM = 135 mA at TA = 50°C - confirming higher capability under controlled thermal conditions with adequate lead heat sinking.
Is the 1N4752PE3/TR8 compatible with lead-free soldering processes?
Yes, the 1N4752PE3/TR8 features RoHS-compliant annealed matte-tin plating and is rated for 260°C soldering for 10 seconds, fully compatible with standard lead-free reflow profiles. Its "e3" suffix certifies compliance with EU Directive 2011/65/EU, and its thermal resistance (45 °C/W junction-to-lead) supports reliable thermal management during lead-free assembly.
How does the "TR8" suffix affect packaging and handling of the 1N4752PE3/TR8?
The "TR8" suffix indicates EIA-296 standard 8 mm tape-and-reel packaging, enabling automated pick-and-place insertion despite the axial DO-41 form factor. Each reel contains standard quantities for SMT line integration, and the carrier tape provides physical protection and orientation control-critical for high-volume manufacturing of hybrid through-hole/SMT assemblies.
1N4752PE3/TR8 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)
1N4752PE3/TR8 FAQ
1.How can I place an order for 1N4752PE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4752PE3/TR8 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 1N4752PE3/TR8 reliable?
The price and inventory of 1N4752PE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4752PE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4752PE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4752PE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4752PE3/TR8?
1N4752PE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4752PE3/TR8 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 1N4752PE3/TR8?
For technical support, including 1N4752PE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4752PE3/TR8 requirements.
6.How does Aetrix verify that 1N4752PE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4752PE3/TR8 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 1N4752PE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4752PE3/TR8?
All 1N4752PE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4752PE3/TR8, 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 1N4752PE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4752PE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4752PE3/TR8 Tags
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