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Microchip Technology 1N4757CPE3/TR8
- Part No.:
- 1N4757CPE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4757CPE3/TR8.pdf
- Description:
- DIODE ZENER 51V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,256
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Product details
Overview
1N4757CPE3/TR8 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 10 μA reverse leakage at 38.8 V, used for precision voltage regulation in power supply feedback loops and reference circuits.
For engineers reviewing the 1N4757CPE3/TR8 datasheet, 1N4757CPE3/TR8 pinout, 1N4757CPE3/TR8 application, or 1N4757CPE3/TR8 equivalent, key selection factors include its tight 2% VZ tolerance, low ZZT at nominal IZT, RoHS-compliant matte-tin plating, tape-and-reel packaging (TR8), and thermal resistance of 45 °C/W junction-to-lead.
Technical Context
This device operates as a reverse-biased voltage reference with sharp breakdown knee, specified at 5 mA test current and 25 °C lead temperature. Its 2% tolerance (C suffix) and 95 Ω dynamic impedance ensure stable regulation under varying load and line conditions in analog feedback paths.
Designed for operation across –65 °C to +150 °C, it delivers 1 W steady-state dissipation at TL < 105 °C (3/8″ from body) or TA < 45 °C on FR4, with moisture sensitivity level 1 and no dry-pack requirement per J-STD-020B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±2% - precise reference for 5 V–54 V regulated rails |
| Test Current (IZT) | 5 mA - standard bias point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZT) | 95 Ω at IZT - low AC impedance ensures minimal output voltage variation under ripple |
| Max Reverse Leakage (IR) | 10 μA at 38.8 V - guarantees low quiescent current in high-impedance reference nodes |
| Power Dissipation | 1.0 W at TL ≤ 105 °C - supports robust thermal design with 3/8″ lead length |
| Thermal Resistance | 45 °C/W junction-to-lead - enables accurate junction temperature estimation for reliability analysis |
| Operating Temperature | –65 °C to +150 °C - qualified for industrial and extended-temperature embedded systems |
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-bias return path | Connected to lower-potential node in Zener regulation configuration |
| Cathode (banded end) | Zener voltage reference terminal | Output node where regulated 51 V appears when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter closed-loop regulation without post-calibration in feedback networks |
| RoHS-compliant "e3" suffix | Meets global environmental compliance requirements without sacrificing solderability or reliability |
| Tape-and-reel packaging (TR8) | Supports automated SMT placement despite axial-lead form factor via carrier tape handling |
| Moisture Sensitivity Level 1 | Eliminates bake-out prior to assembly, reducing manufacturing cost and process complexity |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and ESD protection circuitry overhead in production environments |
Applications
| Switching Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulating output voltage in flyback or forward converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Primary-side voltage reference establishing precise 51 V threshold for error signal generation. Use Value: ±2% VZ tolerance directly reduces output voltage drift across line/load/temperature, improving system accuracy. | Use Scenario: Providing stable excitation voltage for bridge-based pressure or strain sensors in factory automation modules. IC Role / Device Role / Timing Role: Low-drift DC reference source powering Wheatstone bridge and conditioning circuitry. Use Value: 95 Ω ZZT minimizes sensor output error caused by supply impedance, enhancing measurement resolution. |
| Programmable Logic Controller I/O Protection | Automotive Body Control Module Reference |
Use Scenario: Clamping transient overvoltage on 24 V digital input channels while maintaining logic-level compatibility. IC Role / Device Role / Timing Role: Bidirectional transient suppressor and precision clamp referenced to system ground. Use Value: 1 W power rating and 1500 mA surge current capability absorb repetitive 100 V/1 A transients without degradation. | Use Scenario: Generating stable 51 V rail for high-side driver gate bias in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: High-temperature-stable Zener reference enabling reliable MOSFET switching under under-hood conditions. Use Value: Operation up to +150 °C and low thermal resistance (45 °C/W) maintain regulation accuracy during thermal cycling. |
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 TR8 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/TR8 for SMT line integration; choose 1N4757CP for prototyping or low-volume hand assembly |
| BZX55-C51 | 5% tolerance (vs. 2%), higher ZZT (100 Ω), different DO-35 package, 500 mW rating | Limited to lower-power references; unsuitable for 1 W continuous dissipation or tight-tolerance feedback | Use BZX55-C51 only where cost sensitivity outweighs regulation accuracy and power headroom requirements |
Compared with 1N4757CP and BZX55-C51, the 1N4757CPE3/TR8 offers superior tolerance control, higher power handling, and production-ready packaging-making it optimal for industrial-grade feedback and reference designs requiring long-term stability and automated assembly support.
Availability
1N4757CPE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, sensor signal conditioning circuits, and automotive body control modules requiring stable component supply with full traceability and lifecycle management.
Supply support for 1N4757CPE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N47xxAP series was developed to deliver JEDEC-standardized, high-stability Zener references with enhanced thermal performance and RoHS compliance for mission-critical power regulation and sensing applications.
FAQ
What is the Zener voltage tolerance of the 1N4757CPE3/TR8?
The 1N4757CPE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its nominal 51 V Zener voltage is guaranteed between 49.98 V and 52.02 V at 5 mA test current and 25 °C lead temperature, supporting high-accuracy voltage reference designs without trimming.
Does the 1N4757CPE3/TR8 meet RoHS requirements?
Yes, the 1N4757CPE3/TR8 complies with RoHS directives, as confirmed by the "e3" suffix indicating RoHS-compliant matte-tin plating on its axial leads. It meets exemption 7a (lead in high-melting-temperature type solders) and is fully compatible with lead-free reflow profiles up to 260 °C for 10 seconds.
What is the maximum surge current rating for the 1N4757CPE3/TR8?
The 1N4757CPE3/TR8 has a maximum non-repetitive surge current (ISM) of 1500 mA, measured using a ½ sine-wave pulse of 1/120 second duration at 25 °C ambient. This rating enables robust transient suppression in 24 V industrial I/O protection circuits without derating.
Can the 1N4757CPE3/TR8 be used in surface-mount designs?
No-the 1N4757CPE3/TR8 uses a DO-41 axial-lead package and is not a surface-mount device. For SMT equivalents, Microsemi offers the SMAJ4757A and MLL4757A in DO-214AC and SOD-123 packages respectively, both sharing the same 51 V ±2% specification but differing in thermal and mechanical mounting characteristics.
What is the thermal resistance junction-to-lead for the 1N4757CPE3/TR8?
The thermal resistance junction-to-lead (RθJL) for the 1N4757CPE3/TR8 is 45 °C/W when measured at 3/8″ (10 mm) lead length from the body. This value allows accurate junction temperature calculation under 1 W dissipation and informs heatsinking decisions in high-ambient-temperature applications.
1N4757CPE3/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):
- 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/TR8 FAQ
1.How can I place an order for 1N4757CPE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4757CPE3/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 1N4757CPE3/TR8 reliable?
The price and inventory of 1N4757CPE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4757CPE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4757CPE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4757CPE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4757CPE3/TR8?
1N4757CPE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4757CPE3/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 1N4757CPE3/TR8?
For technical support, including 1N4757CPE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4757CPE3/TR8 requirements.
6.How does Aetrix verify that 1N4757CPE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4757CPE3/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 1N4757CPE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4757CPE3/TR8?
All 1N4757CPE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4757CPE3/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 1N4757CPE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4757CPE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4757CPE3/TR8 Tags
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MMBZ5240B-7-F
Diodes Incorporated
-
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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