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Microchip Technology 1N4750CPE3/TR12
- Part No.:
- 1N4750CPE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4750CPE3/TR12.pdf
- Description:
- DIODE ZENER 27V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,015
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Product details
Overview
1N4750CPE3/TR12 from Microsemi is a 27 V, ±2% tolerance, 1 W silicon Zener diode in DO-41 plastic package, rated for 9.5 mA test current (IZT), 35 Ω dynamic impedance (ZZT), and 5 μA reverse leakage at 20.6 V (VR), used for precision voltage regulation in power supply feedback loops and reference circuits.
For engineers reviewing the 1N4750CPE3/TR12 datasheet, 1N4750CPE3/TR12 pinout, 1N4750CPE3/TR12 application, or 1N4750CPE3/TR12 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (45 °C/W junction-to-lead), surge current rating (750 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR12).
Technical Context
This device operates in reverse breakdown to maintain stable output voltage across varying load and line conditions. It delivers regulated 27 V with tight ±2% initial tolerance (C suffix) and exhibits low dynamic impedance (35 Ω at 9.5 mA) for minimal output variation under current transients.
Designed for axial-lead mounting on FR4 PCBs, it features 45 °C/W junction-to-lead thermal resistance at 10 mm lead length and derates linearly above 105 °C lead temperature. Its cathode band marking and 1.2 V forward voltage (max @ 200 mA) support unambiguous polarity-aware circuit integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 27 V ±2% - precise regulation point for feedback networks requiring tight DC reference stability |
| Power Dissipation | 1.0 W at TL < 105 °C - supports continuous operation in compact power supplies without forced cooling |
| Test Current (IZT) | 9.5 mA - operating point where Vz and ZZT are specified; defines optimal bias for regulation accuracy |
| Dynamic Impedance (ZZT) | 35 Ω @ IZT - low AC impedance ensures minimal output voltage shift during load transients |
| Reverse Leakage (IR) | 5 μA @ 20.6 V - low off-state current preserves efficiency in high-impedance bias networks |
| Surge Current (ISM) | 750 mA - withstands short-duration overloads common during power-up or fault recovery |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design with standard lead-forming and board layout |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by a single 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 end | Connected to lower-potential node; forward conduction path when biased positively relative to cathode |
| Cathode | Banded end | Connected to higher-potential node during Zener operation; defines regulation polarity and PCB silkscreen orientation |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables accurate voltage references without post-production trimming in mid-precision analog circuits |
| RoHS-compliant "e3" suffix | Meets global environmental compliance requirements without sacrificing electrical performance or reliability |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints, simplifying SMT and manual assembly logistics |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for special ESD workstations in production environments |
| Tape-and-reel packaging (TR12) | Supports automated pick-and-place placement with industry-standard EIA-296 carrier tape dimensions |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference element setting error amplifier threshold and defining primary-side regulation setpoint. Use Value: Tight ±2% tolerance ensures output accuracy within ±3% over line/load/temperature, reducing need for secondary-side trim. | Use Scenario: Providing stable excitation voltage for bridge-based pressure or strain sensors in factory automation systems. IC Role / Device Role / Timing Role: Precision DC reference source for ratiometric ADC biasing and sensor bridge excitation. Use Value: Low 35 Ω dynamic impedance minimizes reference drift during sensor current transients, improving measurement repeatability. |
| Overvoltage Protection Clamp | Microcontroller Reset Circuit |
Use Scenario: Clamping transient surges on 24 V industrial control bus lines to protect downstream logic interfaces. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy above 27 V to ground during ESD or inductive kick events. Use Value: 750 mA surge rating handles repetitive 1/120 s pulses without degradation, extending system field life. | Use Scenario: Generating clean, temperature-stable reset threshold for 3.3 V or 5 V microcontrollers in embedded telemetry modules. IC Role / Device Role / Timing Role: Voltage monitor establishing reliable brown-out detection level independent of supply ripple. Use Value: Low 5 μA reverse leakage prevents loading of weak reset pull-up networks, ensuring deterministic reset timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4750A | Same 27 V ±5% tolerance, no "C" or "e3" suffix; Sn/Pb plating only; no RoHS compliance | Acceptable where ±5% regulation accuracy suffices and legacy Pb-based assembly is used | Select when RoHS is not required and cost sensitivity outweighs tolerance needs |
| MMSZ4708T1G | Surface-mount SOD-123 package; 27 V ±5%; 500 mW rating; 100 Ω ZZT; RoHS-compliant | Used in space-constrained PCBs where axial DO-41 footprint is prohibitive | Select for high-density layouts requiring SMT compatibility and reduced board area |
Compared with 1N4750A and MMSZ4708T1G, the 1N4750CPE3/TR12 provides tighter ±2% tolerance and full RoHS compliance in a through-hole package optimized for manual rework, thermal robustness, and high-surge reliability-making it preferred for industrial power and sensor reference designs where precision and long-term stability are critical.
Availability
1N4750CPE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor references, overvoltage clamps, and microcontroller reset circuits requiring stable component supply and long-lifecycle support.
Supply support for 1N4750CPE3/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, RF, and discrete components for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed specifically for precision voltage regulation in ruggedized power conversion and signal conditioning applications where thermal stability, surge resilience, and long-term parametric consistency are essential.
FAQ
What is the Zener voltage tolerance of the 1N4750CPE3/TR12?
The 1N4750CPE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its nominal 27 V regulation point falls between 26.46 V and 27.54 V at 25 °C with 9.5 mA test current. This tighter tolerance supports higher-accuracy voltage references compared to standard ±5% variants like the 1N4750A.
Is the 1N4750CPE3/TR12 RoHS compliant?
Yes, the 1N4750CPE3/TR12 is RoHS compliant, as confirmed by the "e3" suffix in its designation. It uses annealed matte-tin plating on leads and meets all substance restrictions under Directive 2011/65/EU. This compliance applies to both the component itself and its tape-and-reel packaging (TR12).
What is the maximum surge current rating for the 1N4750CPE3/TR12?
The 1N4750CPE3/TR12 has a maximum surge current (ISM) rating of 750 mA, measured using a ½ sine-wave pulse of 1/120 second duration at 25 °C ambient. This rating reflects its ability to absorb transient overvoltage events without degradation, making it suitable for clamping applications in industrial control environments.
Does the 1N4750CPE3/TR12 require dry packing before use?
No, the 1N4750CPE3/TR12 does not require dry packing. It is moisture sensitivity level (MSL) 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and can be stored and assembled without baking or humidity-controlled handling-simplifying manufacturing logistics and reducing process risk.
What package type is used for the 1N4750CPE3/TR12?
The 1N4750CPE3/TR12 uses the DO-41 (also designated DO-204AL) axial-leaded plastic package. It features a void-free thermosetting epoxy body meeting UL94V-0 flammability rating, with cathode polarity marked by a single band on the body and leads plated for solderability per MIL-STD-750 Method 2026.
1N4750CPE3/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):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 20.6 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)
1N4750CPE3/TR12 FAQ
1.How can I place an order for 1N4750CPE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4750CPE3/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 1N4750CPE3/TR12 reliable?
The price and inventory of 1N4750CPE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4750CPE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4750CPE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4750CPE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4750CPE3/TR12?
1N4750CPE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4750CPE3/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 1N4750CPE3/TR12?
For technical support, including 1N4750CPE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4750CPE3/TR12 requirements.
6.How does Aetrix verify that 1N4750CPE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4750CPE3/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 1N4750CPE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4750CPE3/TR12?
All 1N4750CPE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4750CPE3/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 1N4750CPE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4750CPE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4750CPE3/TR12 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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SMAZ12-13-F
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