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Microchip Technology 1N4750CPE3/TR8
- Part No.:
- 1N4750CPE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4750CPE3/TR8.pdf
- Description:
- DIODE ZENER 27V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,857
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Product details
Overview
1N4750CPE3/TR8 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 reference and overvoltage protection circuits.
For engineers reviewing the 1N4750CPE3/TR8 datasheet, 1N4750CPE3/TR8 pinout, 1N4750CPE3/TR8 application, or 1N4750CPE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (45 °C/W junction-to-lead), surge current rating (750 mA), operating temperature range (–65 °C to +150 °C), and RoHS-compliant matte-tin plating.
Technical Context
This Zener operates in reverse breakdown to maintain stable output voltage across varying load and line conditions. Its 27 V nominal Zener voltage exhibits a positive temperature coefficient above ~5.6 V, with typical TC of +5.5 mV/°C per Figure 3, enabling predictable drift compensation in analog references.
Designed for axial-leaded through-hole mounting on FR4 PCBs, it delivers 1.0 W steady-state dissipation at lead temperature <105 °C (3/8″ from body) or ambient <45 °C, with thermal resistance of 105 °C/W junction-to-ambient under defined copper pad conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±2% at IZT = 9.5 mA - ensures tight regulation accuracy for feedback references. |
| Power Dissipation | 1.0 W at TL < 105 °C - defines maximum continuous thermal load without derating. |
| Dynamic Impedance | 35 Ω at IZT - low AC impedance maintains regulation stability under dynamic load changes. |
| Reverse Leakage | 5 μA max at VR = 20.6 V - minimal standby current preserves efficiency in low-power bias networks. |
| Surge Current (ISM) | 750 mA peak (½-sine, 1/120 s) - withstands transient overloads during power-up or fault events. |
| Thermal Resistance | 45 °C/W junction-to-lead - enables accurate thermal modeling for lead-length-dependent reliability. |
| Operating Temp | –65 °C to +150 °C - supports industrial and automotive under-hood applications. |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by color band; terminals are anode and cathode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener regulation terminal | Connected to higher potential side; reverse-biased operation provides regulated voltage drop. |
| Anode (unbanded end) | Reference return node | Typically tied to circuit ground or common reference plane for stable bias point. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener tolerance (C suffix) | Enables high-accuracy voltage references without external trimming components. |
| RoHS-compliant matte-tin plating (e3 suffix) | Ensures solderability and long-term reliability under lead-free reflow profiles. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for production handling. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces need for special ESD controls during assembly and field service. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Excitation |
|---|---|
Use Scenario: Provides precise 27 V reference for optocoupler-based feedback loop in isolated DC-DC converters. IC Role / Device Role / Timing Role: Zener voltage reference establishing error amplifier threshold. Use Value: ±2% tolerance ensures output voltage accuracy within ±1.5% over line/load/temperature. | Use Scenario: Supplies stable excitation voltage to 4–20 mA current-loop pressure transducers. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining constant sensor bias. Use Value: Low 35 Ω dynamic impedance minimizes output variation under sensor current modulation. |
| Overvoltage Clamp Protection | Microcontroller Reset Circuit |
Use Scenario: Clamps 3.3 V or 5 V rail against ESD or surge events exceeding 27 V threshold. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting input to protected ICs. Use Value: 750 mA surge rating handles IEC 61000-4-2 contact discharge without degradation. | Use Scenario: Generates clean reset signal by holding microcontroller reset pin low until 27 V rail stabilizes. IC Role / Device Role / Timing Role: Voltage monitor enabling power-on reset sequencing. Use Value: –65 °C to +150 °C operating range supports reset functionality in extended-temperature embedded systems. |
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 (A suffix), no RoHS e3 marking | Lower accuracy; suitable where cost prioritized over precision | Select when ±5% regulation suffices and legacy non-RoHS compliance acceptable |
| BZX85C27 | 27 V, ±5%, 1.3 W, DO-41, but higher ZZT (50 Ω) and wider tolerance | Less stable under dynamic loads; not RoHS-compliant by default | Choose only if existing BOM uses BZX85 series and tighter tolerance not required |
Compared with 1N4750A and BZX85C27, the 1N4750CPE3/TR8 offers superior voltage accuracy (±2% vs. ±5%), guaranteed RoHS compliance (e3), and lower dynamic impedance-critical for high-stability analog references and low-drift power supplies.
Availability
1N4750CPE3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage protection circuits, and microcontroller reset networks requiring stable component supply and full traceability.
Supply support for 1N4750CPE3/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 timing solutions for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed specifically for precision voltage regulation in harsh-environment power systems, emphasizing thermal robustness, moisture resilience, and military-grade screening compatibility.
FAQ
What is the Zener voltage tolerance of the 1N4750CPE3/TR8?
The 1N4750CPE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its nominal 27 V Zener voltage is guaranteed between 26.46 V and 27.54 V at 9.5 mA test current and 25 °C lead temperature, making it suitable for applications demanding tighter regulation than standard ±5% devices like the 1N4750A.
Is the 1N4750CPE3/TR8 RoHS compliant?
Yes, the 1N4750CPE3/TR8 is RoHS compliant, confirmed by the "e3" suffix indicating annealed matte-tin plating per JEDEC standards. It meets EU RoHS Directive 2011/65/EU requirements and is compatible with lead-free reflow soldering processes up to 260 °C for 10 seconds, with no exemption needed for lead content.
What is the maximum surge current rating for the 1N4750CPE3/TR8?
The 1N4750CPE3/TR8 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 allows the device to safely absorb transient overvoltage events in power supply clamping and protection circuits without permanent degradation.
How does the thermal resistance of the 1N4750CPE3/TR8 affect PCB layout?
The 1N4750CPE3/TR8 has a junction-to-lead thermal resistance of 45 °C/W at 3/8″ (10 mm) lead length from the body. To maintain 1 W power dissipation, PCB layout must ensure adequate lead length and copper heatsinking; shorter leads increase thermal resistance, risking overheating. Mounting on FR4 with 4 mm² copper pads yields 105 °C/W junction-to-ambient, requiring ambient derating below 45 °C.
Can the 1N4750CPE3/TR8 be used as a direct replacement for the 1N4750A?
The 1N4750CPE3/TR8 can functionally replace the 1N4750A in most circuits, but differences exist: it adds ±2% tolerance (vs. ±5%), RoHS-compliant plating (e3), and tape-and-reel packaging (TR8). Electrical performance is otherwise identical. No PCB changes are required, though system-level validation of regulation accuracy under worst-case conditions is recommended due to tighter tolerance.
1N4750CPE3/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):
- 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/TR8 FAQ
1.How can I place an order for 1N4750CPE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4750CPE3/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 1N4750CPE3/TR8 reliable?
The price and inventory of 1N4750CPE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4750CPE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4750CPE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4750CPE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4750CPE3/TR8?
1N4750CPE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4750CPE3/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 1N4750CPE3/TR8?
For technical support, including 1N4750CPE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4750CPE3/TR8 requirements.
6.How does Aetrix verify that 1N4750CPE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4750CPE3/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 1N4750CPE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4750CPE3/TR8?
All 1N4750CPE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4750CPE3/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 1N4750CPE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4750CPE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4750CPE3/TR8 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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