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Microchip Technology 1N4751E3/TR13
- Part No.:
- 1N4751E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4751E3/TR13.pdf
- Description:
- DIODE ZENER 30V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,060
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Product details
Overview
1N4751E3/TR13 from Microsemi is a 30 V, 1 W axial-lead Zener diode in DO-41 package with ±5% voltage tolerance, 8.5 mA test current, and 40 Ω dynamic impedance at IZT, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4751E3/TR13 datasheet, 1N4751E3/TR13 pinout, 1N4751E3/TR13 application, or 1N4751E3/TR13 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 (TR13).
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable 30 V regulation across 1–150 mA operating current range, with 0.25 mA maximum reverse leakage at 22.8 V and 23 mV/°C temperature coefficient near nominal voltage. Its DO-41 plastic package enables axial mounting with moisture sensitivity level 1 and no dry-pack requirement.
Designed for DC voltage reference and shunt regulation, it delivers 1.0 W steady-state dissipation 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 solderability validated per MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30 V ±5% at 8.5 mA - defines regulated output voltage under standard test conditions |
| Power Dissipation | 1.0 W at TL < 105 °C - sets maximum continuous thermal load without derating |
| Dynamic Impedance (ZZT) | 40 Ω at IZT = 8.5 mA - determines regulation stiffness against load current variation |
| Max Reverse Current | 5 μA at VR = 22.8 V - specifies leakage below knee voltage, critical for low-power standby |
| 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 using lead length as heatsink path |
| Operating Temperature | −65 °C to +150 °C - ensures reliability in 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 | Reverse-biased input terminal | Connected to lower-potential node; carries full regulator current during operation |
| Cathode | Zener output / reference node | Banded end; held at stable 30 V relative to anode when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered construction | Ensures mechanical and electrical interchangeability with legacy 1N47xx designs across manufacturers |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating, eliminating lead-based solder concerns |
| Moisture Sensitivity Level 1 | Per IPC/JEDEC J-STD-020B - allows indefinite floor life without dry-pack or baking |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - survives handling without special static control |
| Tape-and-reel packaging (TR13) | EIA-296 compliant - enables automated SMT placement despite axial form factor via carrier tape |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Providing stable 30 V reference for linear regulator feedback or ADC reference divider networks. IC Role / Device Role / Timing Role: Shunt voltage reference diode maintaining precise DC potential independent of input ripple. Use Value: Delivers ±5% initial accuracy and 23 mV/°C tempco, enabling <±2% total drift over −40 to +85 °C operating range. | Use Scenario: Clamping transient surges on 24 V industrial control bus lines to prevent downstream IC damage. IC Role / Device Role / Timing Role: Passive crowbar element conducting only above 30 V threshold to divert excess energy. Use Value: Withstands 1000 mA surge (1/120 s) and maintains regulation down to 1 mA, ensuring robust fault response. |
| Signal Level Shifting | Current Source Biasing |
Use Scenario: Generating fixed bias voltage for op-amp input stages in sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Low-noise DC voltage source establishing known common-mode point for differential amplifiers. Use Value: 40 Ω dynamic impedance minimizes AC impedance modulation, preserving signal integrity at audio frequencies. | Use Scenario: Setting gate bias for constant-current LED driver MOSFETs in automotive lighting modules. IC Role / Device Role / Timing Role: Stable voltage reference defining current mirror ratio in discrete current-source topologies. Use Value: Operates reliably from 1 mA to 150 mA, supporting wide dimming range while maintaining <1% current error. |
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 plating; same electrical specs and DO-41 package | Not suitable for lead-free assembly; requires Pb-based solder process | Select when legacy Pb-process compatibility is required and RoHS exemption applies |
| MMSZ5256ET1G | Surface-mount SOD-123 package; 30 V ±5%; 500 mW rating; 30 Ω ZZT | Lower power and smaller footprint; unsuitable for >500 mW continuous dissipation | Choose for space-constrained PCBs where thermal budget permits reduced power handling |
Compared with 1N4751A and MMSZ5256ET1G, the 1N4751E3/TR13 offers RoHS compliance, 1 W power capability, and tape-and-reel automation support-making it optimal for new industrial designs requiring lead-free manufacturing and robust shunt regulation.
Availability
1N4751E3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and test equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N4751E3/TR13 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 markets.
The 1N47xx series was developed to deliver JEDEC-standardized, high-stability Zener regulation in ruggedized plastic packages for mission-critical voltage reference and protection functions.
FAQ
What is the Zener voltage tolerance for 1N4751E3/TR13?
The 1N4751E3/TR13 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 8.5 mA test current and 25 °C lead temperature, and applies across the full operating temperature range per Microsemi's published electrical characteristics table.
Does 1N4751E3/TR13 support lead-free soldering processes?
Yes, the 1N4751E3/TR13 features RoHS-compliant annealed matte-tin plating and is qualified for lead-free reflow soldering up to 260 °C for 10 seconds, per MIL-STD-750 Method 2026. The "e3" suffix explicitly denotes this RoHS compliance, distinguishing it from Sn/Pb-plated variants like 1N4751A.
What is the maximum surge current rating for 1N4751E3/TR13?
The 1N4751E3/TR13 has a maximum non-repetitive surge current (ISM) of 1000 mA, tested using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating enables reliable transient clamping in industrial power line protection and motor drive snubber circuits.
Can 1N4751E3/TR13 be mounted directly on a PCB without heatsinking?
Yes, the 1N4751E3/TR13 can operate at full 1.0 W dissipation when mounted on an FR4 board with 4 mm² copper pads and 1 mm track width (25 mm length), achieving 105 °C/W junction-to-ambient thermal resistance. For sustained 1 W operation, ensure ambient temperature remains below 45 °C per the derating curve in Microsemi's datasheet.
What does the "TR13" suffix indicate in 1N4751E3/TR13?
"TR13" indicates EIA-296 standard tape-and-reel packaging with 13-inch reels, enabling automated pick-and-place assembly. This format is distinct from bulk or ammo-pack options and confirms the device is supplied in machine-ready configuration compatible with high-volume SMT lines despite its axial-lead DO-41 form factor.
1N4751E3/TR13 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)
1N4751E3/TR13 FAQ
1.How can I place an order for 1N4751E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4751E3/TR13 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 1N4751E3/TR13 reliable?
The price and inventory of 1N4751E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4751E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4751E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4751E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4751E3/TR13?
1N4751E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4751E3/TR13 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 1N4751E3/TR13?
For technical support, including 1N4751E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4751E3/TR13 requirements.
6.How does Aetrix verify that 1N4751E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4751E3/TR13 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 1N4751E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4751E3/TR13?
All 1N4751E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4751E3/TR13, 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 1N4751E3/TR13 part is unused and in its original packaging.
Return procedure for 1N4751E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4751E3/TR13 Tags
-
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
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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