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Microchip Technology 1N4758CE3/TR13
- Part No.:
- 1N4758CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4758CE3/TR13.pdf
- Description:
- DIODE ZENER 56V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,480
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Product details
Overview
1N4758CE3/TR13 from Microsemi is a 1.0 W silicon Zener diode with nominal Zener voltage of 56 V, ±2% tolerance (C suffix), RoHS-compliant matte-tin plating (e3), and DO-41 axial-leaded plastic package. It regulates voltage across 10 mA test current (IZT), exhibits 110 Ω dynamic impedance at IZT, and supports operation from –65 °C to +150 °C - used in precision reference and overvoltage protection circuits for industrial power supplies.
For engineers reviewing the 1N4758CE3/TR13 datasheet, 1N4758CE3/TR13 pinout, 1N4758CE3/TR13 application, or 1N4758CE3/TR13 equivalent, key selection factors include its 56 V Zener voltage, ±2% tolerance, 1.0 W power rating, DO-41 thermal resistance (45 °C/W junction-to-lead), and compliance with MIL-PRF-19500 screening options when prefixed.
Technical Context
This Zener operates in reverse breakdown to maintain stable voltage under varying load and temperature conditions. Its sharp knee characteristic is verified by dual-point Zener impedance measurement (ZZT at IZT and ZZK at IZK), ensuring regulation stability across 10 mA to 2000 mA operating current range.
Designed for axial-lead mounting on FR4 PCBs with 1 oz copper, it delivers 1.0 W steady-state dissipation at lead temperature <105 °C (3/8″ from body) or ambient <45 °C - with thermal resistance of 105 °C/W junction-to-ambient under defined pad layout (4 mm² copper, 1 mm trace width).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±2% at 4.5 mA - ensures tight voltage reference accuracy for feedback loops and sensing circuits |
| Power Dissipation | 1.0 W at TL < 105 °C - defines maximum continuous thermal load without derating on lead-mounted designs |
| Dynamic Impedance (ZZT) | 110 Ω at IZT = 4.5 mA - indicates low AC impedance for stable regulation under small-signal ripple |
| Max Reverse Current (IR) | 5 μA at VR = 42.6 V - confirms low leakage below knee voltage, critical for standby power integrity |
| Regulator Current (IZM) | 2000 mA at TA = 50 °C - sets peak surge capability for transient overvoltage clamping |
| Forward Voltage | 1.2 V max at 200 mA - defines conduction loss during forward-biased fault conditions |
| Thermal Resistance | 45 °C/W junction-to-lead (3/8″ lead length) - enables thermal modeling for lead-based heatsinking |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by color band; terminals are non-polarized for through-hole mounting, tin-lead or RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower potential node; conducts forward current up to 200 mA |
| Cathode | Banded end | Connected to higher potential node; reverse-biased to enable Zener regulation at 56 V |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables high-accuracy voltage references without external trimming in analog feedback paths |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for SMT-compatible handling |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces need for ESD mitigation during board assembly and field service |
| RoHS-compliant "e3" suffix | Meets global environmental compliance without performance trade-offs in thermal or electrical behavior |
| Tape-and-reel packaging (TR13) | Supports automated pick-and-place insertion at standard reel lengths (13″ core) |
Applications
| Industrial Power Supply Reference | Overvoltage Clamp in DC-DC Converters |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback converters operating from 24–48 V input rails. IC Role / Device Role / Timing Role: Zener diode providing precise 56 V reference to optocoupler input or TL431 bias network. Use Value: ±2% tolerance ensures output regulation within ±1% over line/load/temperature, reducing need for post-production calibration. | Use Scenario: Protecting MOSFET gate drivers from transient spikes during switching in 48 V automotive DC-DC modules. IC Role / Device Role / Timing Role: Shunt clamp absorbing energy from inductive kickback or ESD events exceeding 56 V threshold. Use Value: 2000 mA surge current rating allows single-device clamping of 100 A/μs transients without degradation. |
| Programmable Voltage Monitor | Low-Power Sensor Biasing |
Use Scenario: Setting trip point for comparator-based undervoltage lockout (UVLO) in battery-powered telemetry nodes. IC Role / Device Role / Timing Role: Precision Zener establishing 56 V threshold for rail monitoring before system wake-up. Use Value: Low 5 μA reverse leakage at 42.6 V minimizes quiescent current draw in always-on monitoring circuits. | Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in HVAC control panels. IC Role / Device Role / Timing Role: Low-noise voltage reference sourcing constant current through 100 Ω RTD elements. Use Value: 110 Ω dynamic impedance suppresses supply ripple coupling into analog sensor signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4758A | Same 56 V, ±5% tolerance (A suffix), non-RoHS tin-lead plating | Acceptable where RoHS exemption applies and tighter tolerance not required | Select when legacy compliance or cost sensitivity outweighs precision and environmental requirements |
| MMSZ5256B-TP | Surface-mount SOD-123 package, same 56 V ±5%, 500 mW rating | Not suitable for 1 W continuous dissipation; limited to low-power signal-level clamping | Choose only for space-constrained PCBs where thermal budget permits derated operation |
Compared with 1N4758A and MMSZ5256B-TP, the 1N4758CE3/TR13 uniquely combines ±2% tolerance, 1.0 W power handling, DO-41 mechanical robustness, and RoHS compliance - making it optimal for industrial-grade reference and clamping where accuracy, reliability, and regulatory alignment are jointly critical.
Availability
1N4758CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive DC-DC converters, programmable voltage monitors, and low-power sensor biasing requiring stable component supply and long-term BOM continuity.
Supply support for 1N4758CE3/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 1N47xxAP series was engineered for precision voltage regulation in harsh-environment power systems - emphasizing thermal stability, ESD immunity, and extended temperature operation from –65 °C to +150 °C.
FAQ
What is the Zener voltage tolerance of the 1N4758CE3/TR13?
The 1N4758CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This is confirmed in the Electrical Characteristics table where 1N4758A (5% tolerance) and 1N4758C (2% tolerance) are explicitly differentiated. The 56 V nominal voltage is guaranteed between 54.88 V and 57.12 V at 4.5 mA test current and 25 °C lead temperature.
Does the 1N4758CE3/TR13 meet RoHS requirements?
Yes, the 1N4758CE3/TR13 meets RoHS requirements, as indicated by the "e3" suffix in the part number. Per Microsemi documentation, the "e3" designation specifies RoHS-compliant annealed matte-tin plating on terminals, and the device is moisture-sensitive Level 1 - eliminating dry-pack requirements and supporting standard handling protocols.
What is the maximum surge current rating for the 1N4758CE3/TR13?
The 1N4758CE3/TR13 has a maximum surge current (ISM) rating of 2000 mA, measured using a ½ sine-wave pulse of 1/120 second duration at 25 °C ambient. This value is specified in the Electrical Characteristics table under the 1N4758A row and applies identically to the C-tolerance variant due to identical construction and thermal design.
Can the 1N4758CE3/TR13 be used in surface-mount designs?
No, the 1N4758CE3/TR13 uses a DO-41 axial-leaded package and is intended for through-hole mounting. For surface-mount equivalents, Microsemi offers the SMAJ4758A and MLL4758A series - but these differ in package, power rating (500 mW), and thermal performance, and are not drop-in replacements for the 1N4758CE3/TR13.
What is the thermal resistance junction-to-lead for the 1N4758CE3/TR13?
The thermal resistance junction-to-lead for the 1N4758CE3/TR13 is 45 °C/W at 3/8″ (10 mm) lead length from the body, as stated in the Maximum Ratings section. This value enables accurate thermal modeling when leads are used as heat paths, and is distinct from the 105 °C/W junction-to-ambient rating measured on FR4 PCBs with defined copper area.
1N4758CE3/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):
- 56 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 110 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 42.6 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)
1N4758CE3/TR13 FAQ
1.How can I place an order for 1N4758CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4758CE3/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 1N4758CE3/TR13 reliable?
The price and inventory of 1N4758CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4758CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4758CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4758CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4758CE3/TR13?
1N4758CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4758CE3/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 1N4758CE3/TR13?
For technical support, including 1N4758CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4758CE3/TR13 requirements.
6.How does Aetrix verify that 1N4758CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4758CE3/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 1N4758CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4758CE3/TR13?
All 1N4758CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4758CE3/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 1N4758CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N4758CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4758CE3/TR13 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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