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Microchip Technology 1N4757E3/TR13
- Part No.:
- 1N4757E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4757E3/TR13.pdf
- Description:
- DIODE ZENER 51V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,729
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Product details
Overview
1N4757E3/TR13 from Microsemi is a 51 V, ±5% tolerance, 1 W axial-lead silicon Zener diode in DO-41 (DO-204AL) 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 delivers stable voltage regulation in power supply reference, overvoltage protection, and precision biasing circuits across industrial temperature range.
For engineers reviewing the 1N4757E3/TR13 datasheet, 1N4757E3/TR13 pinout, 1N4757E3/TR13 application, or 1N4757E3/TR13 equivalent, key selection criteria include its 51 V nominal Zener voltage, 1 W steady-state dissipation at TL < 105°C, RoHS-compliant matte-tin plating, moisture sensitivity Level 1, and tape-and-reel packaging per EIA-296.
Technical Context
This Zener operates in reverse breakdown to maintain a stable 51 V reference across a wide current range (5.0 mA to 90 mA), with low dynamic impedance (95 Ω at IZT) ensuring minimal output variation under load transients. Its thermal resistance is 45 °C/W junction-to-lead (3/8″ lead length) and 105 °C/W junction-to-ambient on FR4 board.
The device features a sharp knee in the breakdown curve verified by dual-point Zener impedance measurement, complies with JEDEC 1N47xxA registration, and uses void-free UL94V-0 epoxy encapsulation with cathode band polarity marking. It is rated for -65°C to +150°C operating/storage temperature and withstands 260°C soldering for 10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±5% at 5.0 mA - defines precise regulation point for reference and clamp circuits |
| Power Dissipation | 1.0 W at TL < 105°C (3/8″ lead) - sets maximum continuous thermal load without derating |
| Dynamic Impedance (ZZT) | 95 Ω at IZT = 5.0 mA - determines output voltage stability under small-signal current changes |
| Max Regulator Current (IZM) | 0.25 A at TA = 50°C - limits safe DC current for sustained regulation without thermal runaway |
| Reverse Leakage (IR) | <5 μA at VR = 38.8 V - ensures low standby power loss in high-impedance bias networks |
| Forward Voltage | ≤1.2 V at 200 mA - supports use as forward-conducting clamp or protection diode when needed |
| Thermal Resistance | 45 °C/W junction-to-lead - enables accurate thermal design using lead heatsinking in compact layouts |
Pinout & Package
Package: DO-41 (JEDEC DO-204AL), axial-lead plastic molded case with cathode band marking; RoHS-compliant matte-tin terminations; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Banded end | Connected to regulated positive rail; reverse-biased for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N47xxA Registration | Industry-standard footprint and electrical behavior ensures interoperability and legacy design reuse |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling, storage, and assembly logistics for production lines |
| RoHS Compliance (e3 suffix) | Lead-free matte-tin plating meets global environmental regulations without solderability compromise |
| Tape-and-Reel Packaging (TR13) | EIA-296 compliant format enables automated pick-and-place placement in high-volume manufacturing |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for special ESD handling in assembly |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifiers. IC Role / Device Role / Timing Role: Precision voltage reference element providing fixed 51 V setpoint for error comparison. Use Value: Maintains ±5% output accuracy over temperature and line/load variations due to low ZZT and sharp knee. |
Use Scenario: Protecting downstream IC inputs from transient voltage spikes exceeding 51 V. IC Role / Device Role / Timing Role: Shunt clamping device that conducts excess energy to ground above breakdown threshold. Use Value: Limits peak voltage to 51 V with fast response and 0.25 A surge capability, preventing latch-up or damage. |
| Bias Network Stabilization | Temperature-Compensated Reference |
Use Scenario: Establishing stable bias points for op-amp input stages or transistor amplifier quiescent points. IC Role / Device Role / Timing Role: Fixed-voltage node generator in high-impedance analog signal chains. Use Value: Delivers low-noise, low-drift reference with ≤1.2 V forward drop enabling bidirectional clamp functionality. |
Use Scenario: Paired with complementary Zener (e.g., 1N4733A) to form temperature-stable reference string. IC Role / Device Role / Timing Role: One half of matched series pair where 51 V device provides positive tempco compensation. Use Value: Enables near-zero net temperature coefficient when combined with low-voltage negative-tempco Zeners. |
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; Sn/Pb terminations; 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 |
| MMSZ5255B-TP | Surface-mount SOD-123 package; 51 V ±5%; 500 mW rating; 170 Ω ZZT at 20 mA | Lower power and higher impedance limit use in high-current or low-noise references | Choose for space-constrained PCBs where 1 W dissipation is not required and reflow compatibility is critical |
Compared with 1N4757A and MMSZ5255B-TP, the 1N4757E3/TR13 offers full 1 W dissipation in through-hole DO-41 with RoHS compliance and industry-standard tape-and-reel delivery-making it optimal for industrial power supplies requiring robust, compliant, and manufacturable voltage regulation.
Availability
1N4757E3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and analog bias networks requiring stable component supply with full RoHS compliance and automated assembly support.
Supply support for 1N4757E3/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 1N4757E3/TR13 belongs to Microsemi's legacy 1N47xxA Zener family, designed specifically for general-purpose, cost-effective, and thermally robust voltage regulation in non-automotive industrial systems.
FAQ
What is the Zener voltage tolerance of the 1N4757E3/TR13?
The 1N4757E3/TR13 has a nominal Zener voltage of 51 V with a ±5% tolerance, as indicated by the "A" suffix in its JEDEC designation. This means the actual measured VZ at 5.0 mA test current falls between 48.45 V and 53.55 V at TL = 25°C. The tolerance is guaranteed per JEDEC 1N47xxA registration and applies across the full -65°C to +150°C operating range.
Does the 1N4757E3/TR13 support automated assembly?
Yes, the 1N4757E3/TR13 is supplied in EIA-296–compliant tape-and-reel packaging (denoted by "TR13" suffix), enabling direct integration into pick-and-place equipment. Its DO-41 axial-lead form factor is compatible with standard through-hole insertion machines, and the RoHS-compliant matte-tin plating ensures reliable solder wetting during wave or selective soldering processes.
What is the maximum continuous current the 1N4757E3/TR13 can regulate?
The 1N4757E3/TR13 supports a maximum regulator current (IZM) of 0.25 A at ambient temperature TA = 50°C when mounted on an FR4 PCB with specified copper pad geometry. At lower ambient temperatures or with enhanced heatsinking (e.g., longer leads), this current may increase-refer to the derating curve in Figure 1 of the Microsemi datasheet for precise thermal limits.
How does the 1N4757E3/TR13 differ from glass-body Zener diodes?
Unlike glass-body variants (e.g., 1N4757G), the 1N4757E3/TR13 uses a plastic DO-41 package with void-free UL94V-0 epoxy, resulting in lower thermal resistance (45 °C/W vs. ~60–70 °C/W for glass) and no moisture sensitivity concerns. It also eliminates risk of glass breakage during handling or thermal cycling, while maintaining identical electrical specifications and JEDEC registration.
Is the 1N4757E3/TR13 suitable for high-reliability military applications?
The base 1N4757E3/TR13 is not screened to military standards. However, Microsemi offers JAN, JANTX, JANTXV, and JANS versions of this Zener by adding MQ, MX, MV, or MSP prefixes respectively-these undergo extended testing per MIL-PRF-19500 and are qualified for aerospace and defense use. The "E3/TR13" variant is intended for commercial and industrial applications.
1N4757E3/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:
- ±10%
- 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)
1N4757E3/TR13 FAQ
1.How can I place an order for 1N4757E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4757E3/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 1N4757E3/TR13 reliable?
The price and inventory of 1N4757E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4757E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4757E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4757E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4757E3/TR13?
1N4757E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4757E3/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 1N4757E3/TR13?
For technical support, including 1N4757E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4757E3/TR13 requirements.
6.How does Aetrix verify that 1N4757E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4757E3/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 1N4757E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4757E3/TR13?
All 1N4757E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4757E3/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 1N4757E3/TR13 part is unused and in its original packaging.
Return procedure for 1N4757E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4757E3/TR13 Tags
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