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Microchip Technology 1N4757CPE3/TR12
- Part No.:
- 1N4757CPE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4757CPE3/TR12.pdf
- Description:
- DIODE ZENER 51V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,834
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Product details
Overview
1N4757CPE3/TR12 from Microsemi is a 51 V, ±2% tolerance, 1 W axial-lead Zener diode in DO-41 plastic package, rated for 5 mA test current, 95 Ω dynamic impedance at IZT, and 1500 mA maximum regulator current at TL = 50°C. It delivers stable voltage regulation in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N4757CPE3/TR12 datasheet, 1N4757CPE3/TR12 pinout, 1N4757CPE3/TR12 application, or 1N4757CPE3/TR12 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (45°C/W junction-to-lead), surge current rating (1500 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR12).
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 51 V reference across a wide current range (5 mA to 1500 mA), with sharp knee characteristics verified by dual-point Zener impedance measurement per MicroNote 202. Its DO-41 plastic package provides lower thermal resistance than glass-body variants and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
The device features a cathode band polarity indicator, 1.2 V max forward voltage at 200 mA, and is rated for 260°C soldering (10 s). It supports MIL-PRF-19500 screening when prefixed (e.g., MX1N4757CPE3/TR12) and is designed for operation from –65°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±2% at 5 mA - ensures precise reference accuracy for feedback loops and voltage clamping |
| Power Dissipation | 1.0 W at TL < 105°C (3/8″ lead length) - defines safe continuous operating envelope with derating above 105°C |
| Dynamic Impedance (ZZT) | 95 Ω at IZT = 5 mA - indicates low AC impedance for stable regulation under varying load currents |
| Max Regulator Current (IZM) | 1500 mA at TL = 50°C - sets peak steady-state current capability before thermal shutdown |
| Reverse Leakage (IR) | 5 μA max at VR = 38.8 V - confirms low off-state power loss in high-impedance bias networks |
| Thermal Resistance | 45°C/W junction-to-lead - enables accurate junction temperature estimation for reliability analysis |
| Solder Temperature | 260°C for 10 s max - compatible with standard IR reflow and wave soldering processes |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte-tin plated, void-free thermosetting epoxy body meeting UL94V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node; carries forward current or serves as reference ground return path |
| Cathode | Banded end | Connected to higher-potential node; maintains regulated 51 V drop during reverse conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop control vs. standard ±5% (A suffix) or ±10% (no suffix) parts |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating, eliminating lead-based solder compatibility issues |
| Tape-and-reel packaging (TR12) | Supports automated SMT placement via EIA-296 standard carrier tape, 12 mm width, 1000 pcs/reel |
| Level 1 moisture sensitivity | Allows indefinite floor life without dry pack or baking, reducing handling overhead in production environments |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling protocols during assembly and testing |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator output stage or switching converter error amplifier. IC Role / Device Role / Timing Role: Zener diode acting as precision shunt reference to set output voltage threshold. Use Value: ±2% tolerance ensures output regulation within ±0.5% of nominal, critical for 5 V or 3.3 V system rails. | Use Scenario: Clamping transient surges on DC bus lines in motor drives or industrial PLC inputs. IC Role / Device Role / Timing Role: Shunt protector diverting excess energy to ground when line voltage exceeds 51 V. Use Value: 1500 mA surge current rating handles repetitive 100 ms transients without degradation. |
| Voltage Monitor Circuit | Signal Level Translation |
Use Scenario: Detecting undervoltage or overvoltage conditions in battery-powered instrumentation. IC Role / Device Role / Timing Role: Threshold detector comparing sensed voltage against 51 V reference via comparator input. Use Value: Low 5 μA leakage at 38.8 V ensures minimal loading on high-impedance sensor dividers. | Use Scenario: Biasing logic-level interfaces between 3.3 V microcontrollers and 51 V analog subsystems. IC Role / Device Role / Timing Role: Clamp diode limiting signal swing to safe levels for downstream IC inputs. Use Value: 95 Ω dynamic impedance minimizes voltage shift under fast edge transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4757CP | No TR12 tape-and-reel; bulk or ammo pack only; same electrical specs and DO-41 package | Not suitable for automated pick-and-place; requires manual or vibratory feeding | Select 1N4757CPE3/TR12 for SMT production; choose 1N4757CP for prototyping or low-volume hand assembly |
| MMSZ5257ET1G | Surface-mount SOD-123 package; 51 V ±5%; 200 mW power rating; 500 mA IZM | Lower power handling and looser tolerance; unsuitable for 1 W continuous regulation | Use MMSZ5257ET1G only in space-constrained, low-power bias networks where 51 V ±5% suffices |
Compared with 1N4757CP and MMSZ5257ET1G, the 1N4757CPE3/TR12 uniquely combines ±2% tolerance, 1 W dissipation, DO-41 mechanical robustness, and EIA-296 tape-and-reel compatibility-making it optimal for high-reliability, medium-power industrial voltage references requiring automated assembly.
Availability
1N4757CPE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive protection circuits, and battery management systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N4757CPE3/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 1N47xx series was developed to deliver JEDEC-standardized, high-stability Zener regulation in ruggedized plastic packages for mission-critical power conditioning and protection applications.
FAQ
What is the Zener voltage tolerance of the 1N4757CPE3/TR12?
The 1N4757CPE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its nominal 51 V breakdown voltage is guaranteed between 49.98 V and 52.02 V when measured at 5 mA test current and 25°C lead temperature. This tighter tolerance supports precision voltage reference designs where standard ±5% (A suffix) parts would introduce unacceptable error.
Does the 1N4757CPE3/TR12 require dry packing due to moisture sensitivity?
No, the 1N4757CPE3/TR12 is moisture classified as Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and does not require dry pack or baking prior to soldering. Its DO-41 plastic encapsulation provides inherent moisture resistance, simplifying handling and storage in standard production environments without humidity-controlled cabinets.
What is the maximum surge current rating for the 1N4757CPE3/TR12?
The 1N4757CPE3/TR12 has a maximum surge current (ISM) rating of 1500 mA, measured using a ½ sine-wave pulse of 1/120 second duration at 25°C ambient. This rating applies to short-duration transients such as ESD events or inductive kickback, and reflects the device's ability to absorb energy without parametric shift or failure-critical for overvoltage clamp applications in industrial controls.
Is the 1N4757CPE3/TR12 RoHS compliant?
Yes, the "e3" suffix in 1N4757CPE3/TR12 explicitly denotes RoHS compliance per EU Directive 2011/65/EU. The device uses annealed matte-tin plating on leads and void-free UL94V-0 thermosetting epoxy encapsulation-both fully compliant with lead-free soldering requirements and environmental regulations.
What does the "TR12" suffix indicate in 1N4757CPE3/TR12?
The "TR12" suffix indicates EIA-296 standard tape-and-reel packaging with 12 mm carrier tape width, containing 1000 units per reel. This format enables direct integration into automated SMT pick-and-place equipment, supporting high-throughput manufacturing. The "TR" designation confirms factory-loaded, sealed reels with proper orientation and leader/tail specifications per industry standards.
1N4757CPE3/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):
- 51 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 38.8 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)
1N4757CPE3/TR12 FAQ
1.How can I place an order for 1N4757CPE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4757CPE3/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 1N4757CPE3/TR12 reliable?
The price and inventory of 1N4757CPE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4757CPE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4757CPE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4757CPE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4757CPE3/TR12?
1N4757CPE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4757CPE3/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 1N4757CPE3/TR12?
For technical support, including 1N4757CPE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4757CPE3/TR12 requirements.
6.How does Aetrix verify that 1N4757CPE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4757CPE3/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 1N4757CPE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4757CPE3/TR12?
All 1N4757CPE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4757CPE3/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 1N4757CPE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4757CPE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4757CPE3/TR12 Tags
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MM5Z5V1ST1G
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