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Microchip Technology 1N4757APE3/TR12
- Part No.:
- 1N4757APE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4757APE3/TR12.pdf
- Description:
- DIODE ZENER 51V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,028
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Product details
Overview
1N4757APE3/TR12 from Microsemi is a 1.0 W, 51 V ±5% Zener diode in DO-41 plastic package, rated for 5.0 mA test current, 95 Ω dynamic impedance at IZT, and 0.25 A maximum regulator current at TA = 50°C. It provides stable voltage regulation in power supply reference, overvoltage protection, and analog signal conditioning circuits.
For engineers reviewing the 1N4757APE3/TR12 datasheet, 1N4757APE3/TR12 pinout, 1N4757APE3/TR12 application, or 1N4757APE3/TR12 equivalent, key selection factors include its 51 V nominal Zener voltage, 5% tolerance, 1.0 W power rating at 25°C, DO-41 axial-leaded package, and RoHS-compliant matte-tin plating.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain a stable reference voltage across a wide operating current range (IZK = 0.25 mA to IZM = 250 mA) and temperature span (–65°C to +150°C). Its 95 Ω dynamic impedance at 5.0 mA ensures predictable regulation under varying load conditions.
The device features a cathode band marking, tin-lead or RoHS-compliant matte-tin terminations, and moisture sensitivity level 1 per J-STD-020B-no dry pack required. Thermal resistance is 45°C/W junction-to-lead (3/8″ lead length) and 105°C/W junction-to-ambient on FR4 with defined copper pad geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±5% at IZT = 5.0 mA - defines precise regulation point for reference design |
| Power Dissipation | 1.0 W at TL ≤ 105°C - sets thermal derating boundary for PCB layout |
| Dynamic Impedance (ZZT) | 95 Ω at IZT = 5.0 mA - determines output voltage variation under load transients |
| Max Regulator Current (IZM) | 250 mA at TA = 50°C - limits usable current range in shunt regulation |
| Reverse Leakage (IR) | 5 μA max at VR = 38.8 V - ensures low standby power loss below knee voltage |
| Thermal Resistance | 45°C/W junction-to-lead - enables thermal modeling with standard lead-mounting practice |
| Forward Voltage | 1.2 V max at IF = 200 mA - relevant for polarity-check or ESD clamp use cases |
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, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node in Zener regulation configuration |
| Cathode | Banded end | Connected to higher-potential node; Zener voltage develops across cathode-to-anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N47xxAP series | Industry-standard footprint and electrical behavior for drop-in sourcing |
| RoHS-compliant "e3" suffix | Meets EU RoHS Directive 2011/65/EU with annealed matte-tin plating |
| Moisture Sensitivity Level 1 | No dry pack or baking required before SMT reflow or manual assembly |
| Low thermal resistance (45°C/W) | Enables higher power operation with minimal lead-length-dependent heating |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - no special handling needed in production |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifier loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 51 V setpoint for error detection. Use Value: Maintains ±5% regulation accuracy across –65°C to +150°C ambient, enabling reliable feedback under thermal stress. | Use Scenario: Clamping transient surges on 48 V DC bus lines in telecom or industrial control systems. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as crowbar element during overvoltage events. Use Value: Withstands 250 mA peak surge current (ISM) and dissipates 1.0 W continuously, protecting downstream ICs from >51 V excursions. |
| Analog Signal Conditioning | Calibration Reference Source |
Use Scenario: Providing stable bias voltage for op-amp input stages or sensor excitation circuits. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference for precision analog front-ends. Use Value: 95 Ω dynamic impedance minimizes AC ripple coupling into sensitive analog nodes at 5 mA operating point. | Use Scenario: Serving as traceable voltage standard in handheld multimeters or portable calibration tools. IC Role / Device Role / Timing Role: Primary reference element with known 5% tolerance and JEDEC-verified VZ stability. Use Value: JEDEC registration and 51 V ±5% specification enable repeatable inter-unit calibration without external metrology. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4757A | No "e3" RoHS suffix; tin-lead terminations only | Not suitable for RoHS-compliant production; requires Pb-containing solder process | Select when legacy Pb-based assembly is mandated and environmental compliance is not required |
| MMBZ5255BS-7-F | SOT-23 surface-mount package; 51 V ±5%, 225 mW rating | Lower power, space-constrained PCBs; not interchangeable due to package and thermal limits | Select for high-density layouts where DO-41 axial leads are impractical |
Compared with 1N4757A and MMBZ5255BS-7-F, the 1N4757APE3/TR12 delivers full 1.0 W dissipation in a through-hole package with RoHS compliance and industry-standard JEDEC registration-making it optimal for robust, medium-power, compliant industrial designs requiring proven reliability and sourcing continuity.
Availability
1N4757APE3/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and analog signal conditioning applications requiring stable component supply and long-term lifecycle support.
Supply support for 1N4757APE3/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 series was designed specifically for general-purpose, high-stability Zener regulation in demanding environments-emphasizing JEDEC compatibility, thermal robustness, and broad voltage coverage from 3.3 V to 100 V.
FAQ
What is the Zener voltage tolerance of the 1N4757APE3/TR12?
The 1N4757APE3/TR12 has a nominal Zener voltage of 51 V with a ±5% tolerance, as indicated by the "A" suffix in the part number per JEDEC standard. This tolerance applies at TL = 25°C and IZT = 5.0 mA. The "e3" suffix confirms RoHS compliance but does not affect voltage tolerance.
What package type does the 1N4757APE3/TR12 use?
The 1N4757APE3/TR12 uses the DO-41 (also designated DO-204AL) axial-leaded plastic package. It features a void-free thermosetting epoxy body meeting UL94V-0, with cathode polarity marked by a colored band on the banded end.
What is the maximum power dissipation for the 1N4757APE3/TR12?
The 1N4757APE3/TR12 is rated for 1.0 W power dissipation at lead temperature (TL) ≤ 105°C with 3/8″ (10 mm) lead length from body, or at ambient temperature (TA) ≤ 45°C when mounted on FR4 with specified copper pad geometry. Derating is required above these temperatures.
Is the 1N4757APE3/TR12 RoHS compliant?
Yes, the "e3" suffix in 1N4757APE3/TR12 explicitly denotes RoHS compliance per EU Directive 2011/65/EU. Terminations use annealed matte-tin plating, and the device meets all restricted substance thresholds without exemptions.
What is the surge current rating of the 1N4757APE3/TR12?
The 1N4757APE3/TR12 has a maximum surge current (ISM) rating of 250 mA, measured using a ½ sine-wave pulse of 1/120 second duration at 25°C ambient. This rating supports transient overvoltage clamping in protection circuits without permanent degradation.
1N4757APE3/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:
- ±5%
- 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)
1N4757APE3/TR12 FAQ
1.How can I place an order for 1N4757APE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4757APE3/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 1N4757APE3/TR12 reliable?
The price and inventory of 1N4757APE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4757APE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4757APE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4757APE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4757APE3/TR12?
1N4757APE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4757APE3/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 1N4757APE3/TR12?
For technical support, including 1N4757APE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4757APE3/TR12 requirements.
6.How does Aetrix verify that 1N4757APE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4757APE3/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 1N4757APE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4757APE3/TR12?
All 1N4757APE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4757APE3/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 1N4757APE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4757APE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4757APE3/TR12 Tags
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