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Microchip Technology 1N4757CE3/TR13
- Part No.:
- 1N4757CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4757CE3/TR13.pdf
- Description:
- DIODE ZENER 51V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,142
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Product details
Overview
1N4757CE3/TR13 from Microsemi is a 51 V, ±2% tolerance, 1 W axial-lead silicon Zener diode in DO-41 package, rated for 5.0 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, overvoltage protection, and precision biasing circuits across industrial temperature range.
For engineers reviewing the 1N4757CE3/TR13 datasheet, 1N4757CE3/TR13 pinout, 1N4757CE3/TR13 application, or 1N4757CE3/TR13 equivalent, key selection criteria include its tight ±2% Zener voltage tolerance (C suffix), RoHS-compliant matte-tin plating (e3 suffix), tape-and-reel packaging (TR13 suffix), and DO-41 thermal performance with 45°C/W junction-to-lead resistance.
Technical Context
This device operates in reverse-bias breakdown mode to maintain a stable 51 V reference across a wide operating current range (5 mA to 1500 mA) and temperature span (–65°C to +150°C). Its Zener knee is characterized by 0.5 mA test current and 18 Ω dynamic impedance at that point, ensuring low-noise regulation onset.
The 1N4757CE3/TR13 exhibits a positive temperature coefficient near 51 V (≈+12 mV/°C per Figure 3), enabling predictable drift compensation in multi-diode references. Its DO-41 package supports axial mounting with cathode band polarity marking and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±2% at 5.0 mA - ensures precise reference accuracy for feedback loops and analog thresholds |
| Power Dissipation | 1.0 W at TL < 105°C (3/8″ lead length) - defines safe continuous operation with standard PCB heatsinking |
| Dynamic Impedance (ZZT) | 95 Ω at IZT = 5.0 mA - determines output voltage variation under load transients |
| Maximum Regulator Current (IZM) | 1500 mA at TL = 50°C - sets upper limit for shunt regulation capacity before thermal runaway |
| Reverse Leakage (IR) | <5 μA at VR = 38.8 V - guarantees minimal standby current in high-impedance sensing nodes |
| Forward Voltage | ≤1.2 V at 200 mA - enables use as clamping diode in bidirectional protection schemes |
| Thermal Resistance | 45°C/W junction-to-lead - allows direct thermal modeling using lead length as heatsink path |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node in shunt regulator configuration | Connected to system ground or lower-potential rail; carries full load current when regulating |
| Cathode | Zener voltage output node | Banded end; held at stable 51 V relative to anode; requires series resistor to limit IZ |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Reduces calibration burden in precision voltage references and analog front-ends |
| RoHS-compliant matte-tin plating (e3 suffix) | Enables lead-free reflow soldering at 260°C for 10 s without degradation |
| Tape-and-reel packaging (TR13 suffix) | Supports automated SMT placement despite axial form factor via carrier tape indexing |
| Level 1 moisture sensitivity (J-STD-020B) | Eliminates dry-pack requirement and floor-life tracking for production handling |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Permits handling without special static-control protocols in assembly environments |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Provides reference voltage for TL431-based optocoupler feedback in 24 V DC-DC converters. IC Role / Device Role / Timing Role: Zener diode acts as precision shunt reference to set output voltage threshold. Use Value: ±2% tolerance ensures output regulation within ±0.5 V over line/load/temperature, reducing need for post-production trimming. | Use Scenario: Clamps transient surges on 48 V telecom power rails during lightning-induced spikes. IC Role / Device Role / Timing Role: Zener diode functions as passive crowbar element to divert excess energy to ground. Use Value: 1500 mA peak surge current rating handles 10/1000 µs waveforms without failure, extending system MTBF. |
| Industrial Sensor Biasing | Programmable Logic Controller Input Conditioning |
Use Scenario: Supplies stable 51 V bias to piezoresistive pressure sensor bridges in oilfield instrumentation. IC Role / Device Role / Timing Role: Zener diode serves as low-drift excitation source independent of supply variation. Use Value: 45°C/W thermal resistance enables direct mounting to metal chassis for self-cooling, maintaining <±0.1%/°C drift. | Use Scenario: Limits input voltage to PLC digital input modules receiving 24 V DC field signals. IC Role / Device Role / Timing Role: Zener diode operates as fail-safe clamp to protect CMOS input buffers from wiring faults. Use Value: 1.2 V forward voltage allows bidirectional clamping when paired with series diode, suppressing both positive and negative transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4757A | Same 51 V, ±5% tolerance (A suffix), non-RoHS tin-lead plating | Not suitable for lead-free manufacturing; requires dry-pack if stored >12 months | Select when legacy process compatibility outweighs environmental compliance |
| MMSZ5255B-TP | 51 V, ±5%, SOD-123 surface-mount package, 500 mW rating | Lower power handling (500 mW vs. 1000 mW); unsuitable for high-current shunt regulation | Choose only for space-constrained PCBs where thermal derating permits 500 mW operation |
Compared with 1N4757A and MMSZ5255B-TP, the 1N4757CE3/TR13 offers tighter ±2% regulation, RoHS compliance, and full 1 W dissipation in through-hole form-making it optimal for industrial power supplies requiring long-term stability and process alignment.
Availability
1N4757CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, telecom surge protection, sensor excitation circuits, and PLC input conditioning requiring stable component supply and long-lifecycle support.
Supply support for 1N4757CE3/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed specifically for robust, cost-effective voltage regulation in harsh-environment power systems where long-term parametric stability and JEDEC-standard compatibility are critical.
FAQ
What is the Zener voltage tolerance of the 1N4757CE3/TR13?
The 1N4757CE3/TR13 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 when measured at 5.0 mA test current and 25°C lead temperature. This tighter tolerance reduces calibration overhead in precision analog circuits compared to standard ±5% variants like the 1N4757A.
Does the 1N4757CE3/TR13 require dry packing before PCB assembly?
No, the 1N4757CE3/TR13 does not require dry packing. It is moisture-sensitive level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without desiccant or humidity-controlled packaging. This simplifies inventory handling and eliminates floor-life tracking for production lines using the 1N4757CE3/TR13.
What is the maximum steady-state power dissipation for the 1N4757CE3/TR13?
The 1N4757CE3/TR13 is rated for 1.0 W steady-state power dissipation at a lead temperature (TL) below 105°C with 3/8″ (10 mm) lead length from the body. When mounted on a standard FR4 PCB with 1 oz copper, its derated power drops to 1.0 W only at ambient temperatures below 45°C due to higher junction-to-ambient thermal resistance (105°C/W).
Can the 1N4757CE3/TR13 be used in surface-mount designs?
The 1N4757CE3/TR13 itself is a DO-41 axial-leaded through-hole device and is not surface-mount compatible. However, Microsemi offers surface-mount equivalents such as the SMAJ4757A and MLL4757A for similar 51 V regulation. The TR13 suffix indicates tape-and-reel packaging but does not change the axial-leaded form factor of the 1N4757CE3/TR13.
What is the significance of the "e3" and "TR13" suffixes in 1N4757CE3/TR13?
The "e3" suffix indicates RoHS-compliant matte-tin plating, qualified for lead-free reflow soldering at 260°C for 10 seconds. The "TR13" suffix specifies EIA-296-compliant tape-and-reel packaging with 13-inch reels, enabling automated pick-and-place handling despite its axial-leaded construction. Together, they define the 1N4757CE3/TR13 as a production-ready, environmentally compliant variant of the 1N4757 family.
1N4757CE3/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):
- 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)
1N4757CE3/TR13 FAQ
1.How can I place an order for 1N4757CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4757CE3/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 1N4757CE3/TR13 reliable?
The price and inventory of 1N4757CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4757CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4757CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4757CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4757CE3/TR13?
1N4757CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4757CE3/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 1N4757CE3/TR13?
For technical support, including 1N4757CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4757CE3/TR13 requirements.
6.How does Aetrix verify that 1N4757CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4757CE3/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 1N4757CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4757CE3/TR13?
All 1N4757CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4757CE3/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 1N4757CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N4757CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4757CE3/TR13 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
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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