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Microchip Technology 1N4751PE3/TR12
- Part No.:
- 1N4751PE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4751PE3/TR12.pdf
- Description:
- DIODE ZENER 30V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,494
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Product details
Overview
1N4751PE3/TR12 from Microsemi is a 30 V, 1 W plastic-encapsulated Zener diode with ±5% voltage tolerance, DO-41 package, and RoHS-compliant matte-tin plating. It regulates voltage in power supply reference, overvoltage protection, and voltage-clamping circuits across industrial and embedded systems.
For engineers reviewing the 1N4751PE3/TR12 datasheet, 1N4751PE3/TR12 pinout, 1N4751PE3/TR12 application, or 1N4751PE3/TR12 equivalent, key selection factors include its 30 V nominal Zener voltage, 8.5 mA test current, 40 Ω dynamic impedance at IZT, 5 μA maximum reverse leakage at 22.8 V, and thermal resistance of 45 °C/W junction-to-lead.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable voltage across a wide current range (0.25–150 mA), with sharp knee characteristics verified by dual-point Zener impedance measurement per MicroNote 202. Its 30 V nominal regulation is specified at 25 °C lead temperature with 90-second stabilization after DC current application.
Designed for axial-lead mounting on FR4 PCBs with 1 oz copper, it delivers 1.0 W steady-state dissipation at TL < 105 °C (3/8″ from body) or TA < 45 °C, and features moisture sensitivity level 1 per J-STD-020B-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30 V ±5% at IZT = 8.5 mA - defines precise clamping threshold for reference and protection circuits |
| Power Dissipation | 1.0 W at TL ≤ 105 °C - supports continuous operation in compact power rails without forced cooling |
| Dynamic Impedance (ZZT) | 40 Ω at IZT = 8.5 mA - ensures low voltage variation under load transients |
| Reverse Leakage (IR) | 5 μA max at VR = 22.8 V - guarantees minimal quiescent current in standby mode |
| Thermal Resistance | 45 °C/W junction-to-lead - enables accurate thermal design with standard lead length (10 mm) |
| Operating Temperature | −65 °C to +150 °C - suitable for automotive under-hood and industrial control environments |
| Forward Voltage | 1.2 V max at 200 mA - allows use as a forward-biased clamp or indicator diode if needed |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by color band; terminals are nonsensitive to ESD per MIL-STD-750 Method 1020 and solderable at 260 °C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated rail or input side of shunt regulator |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N47xxAP series | Ensures global interchangeability and standardized test conditions per industry baseline |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating, no lead or hazardous substances |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for SMT-compatible handling |
| Plastic encapsulation (P suffix) | Reduces thermal resistance vs. glass-body variants, improving power handling in same footprint |
| Tape-and-reel packaging (TR12) | Enables automated pick-and-place assembly with EIA-296 standard carrier tape |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator circuits or ADC reference buffers. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 30 V bias point. Use Value: Maintains ±5% regulation accuracy across 0.25–150 mA load current, minimizing drift in analog signal chains. | Use Scenario: Clamping transient surges on 24 V DC bus lines in PLC I/O modules. IC Role / Device Role / Timing Role: Reverse-biased transient voltage suppressor limiting peak excursions to 30 V. Use Value: Absorbs up to 1000 mA surge current (½-sine, 1/120 s) without degradation, protecting downstream logic. |
| Voltage-Level Translation | Signal Conditioning Clamp |
Use Scenario: Biasing op-amp inputs to fixed 30 V rail in high-side sensing amplifiers. IC Role / Device Role / Timing Role: Passive level-shifting element establishing known DC offset. Use Value: Provides stable 30 V reference with 40 Ω dynamic impedance, reducing gain error in precision instrumentation. | Use Scenario: Limiting analog sensor output swing to prevent ADC saturation in industrial transmitters. IC Role / Device Role / Timing Role: Bidirectional clamp (forward + reverse) bounding signal amplitude. Use Value: Leverages 1.2 V forward drop and 30 V Zener breakdown to confine signals within safe 0–30 V window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4751A | No "e3" RoHS suffix; Sn/Pb terminations; same electrical specs and DO-41 package | Not compliant with EU RoHS; requires leaded solder process or exemption documentation | Select when legacy Pb-based assembly is mandated and environmental compliance is not required |
| MMBZ5261BS-7-F | Surface-mount SOD-123 package; 30 V ±5%; 225 mW rating; 100 Ω ZZT at 3.8 mA | Lower power and higher impedance limit use to low-current references or signal-level clamping | Select for space-constrained PCBs where 1 W dissipation is unnecessary and SMT is preferred |
Compared with 1N4751A and MMBZ5261BS-7-F, the 1N4751PE3/TR12 offers full 1 W power handling in RoHS-compliant through-hole form, making it optimal for robust industrial power rail regulation where thermal margin and assembly flexibility matter.
Availability
1N4751PE3/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and voltage-level translation requiring stable component supply across industrial automation, embedded control, and test equipment programs.
Supply support for 1N4751PE3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N47xxAP Zener series was engineered for precision voltage regulation in harsh-environment power systems, emphasizing thermal stability, JEDEC-standardized performance, and long-term reliability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N4751PE3/TR12?
The 1N4751PE3/TR12 has a nominal Zener voltage of 30 V with a tolerance of ±5%, as indicated by the "A" suffix in its base part number (1N4751A). This tolerance is measured at 25 °C lead temperature with 90 seconds of DC current stabilization, per JEDEC-registered test conditions.
Does the 1N4751PE3/TR12 require dry packing before PCB assembly?
No, the 1N4751PE3/TR12 is moisture sensitivity level 1 per IPC/JEDEC J-STD-020B, meaning it does not absorb sufficient moisture during ambient storage to require dry packing or floor-life controls prior to reflow or hand soldering.
What is the maximum surge current rating for the 1N4751PE3/TR12?
The 1N4751PE3/TR12 is rated for a maximum reverse surge current (ISM) of 1000 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient, per Microsemi's published electrical characteristics table.
Can the 1N4751PE3/TR12 be used in surface-mount designs?
No-the 1N4751PE3/TR12 uses a DO-41 axial-leaded package and is intended for through-hole mounting. For surface-mount equivalents, Microsemi offers the SMAJ4751A and MLL4751A in DO-214AC and SOD-123 packages respectively, though with different power and impedance ratings.
What does the "TR12" suffix indicate in 1N4751PE3/TR12?
The "TR12" suffix indicates tape-and-reel packaging per EIA-296 standard, with 12,000 units per reel. This format supports automated pick-and-place assembly and is distinct from bulk or ammo-pack options.
1N4751PE3/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):
- 30 V
- Tolerance:
- ±10%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 22.8 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)
1N4751PE3/TR12 FAQ
1.How can I place an order for 1N4751PE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4751PE3/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 1N4751PE3/TR12 reliable?
The price and inventory of 1N4751PE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4751PE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4751PE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4751PE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4751PE3/TR12?
1N4751PE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4751PE3/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 1N4751PE3/TR12?
For technical support, including 1N4751PE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4751PE3/TR12 requirements.
6.How does Aetrix verify that 1N4751PE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4751PE3/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 1N4751PE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4751PE3/TR12?
All 1N4751PE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4751PE3/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 1N4751PE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4751PE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4751PE3/TR12 Tags
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