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Microchip Technology 1N4758CPE3/TR8
- Part No.:
- 1N4758CPE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4758CPE3/TR8.pdf
- Description:
- DIODE ZENER 56V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,252
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Product details
Overview
1N4758CPE3/TR8 from Microsemi is a 56 V, ±2% tolerance, 1 W axial-lead Zener diode in DO-41 plastic package, rated for 4.5 mA test current, 110 Ω dynamic impedance at IZT, and 2000 mA maximum surge current. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N4758CPE3/TR8 datasheet, 1N4758CPE3/TR8 pinout, 1N4758CPE3/TR8 application, or 1N4758CPE3/TR8 equivalent, key selection factors include its tight 2% Zener voltage tolerance, DO-41 mechanical compatibility, RoHS-compliant matte-tin plating, and validated thermal resistance of 45 °C/W (junction-to-lead) at 10 mm lead length.
Technical Context
This Zener operates in reverse breakdown to maintain stable 56 V regulation across 1–2000 mA operating current range. Its 110 Ω dynamic impedance at 4.5 mA ensures predictable voltage deviation under load transients, while the 0.25 mA maximum reverse leakage at 42.6 V supports low-power standby integrity.
The device uses silicon PN junction construction with void-free epoxy encapsulation (UL94V-0), cathode band polarity marking, and is moisture-sensitive Level 1 per J-STD-020B-no dry pack required. Thermal derating follows linear 12.5 mW/°C reduction above 105 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±2% at 4.5 mA - precise reference for feedback loops requiring tight output tolerance |
| Power Dissipation | 1.0 W at TL ≤ 105 °C - supports continuous regulation in compact PCB layouts with adequate lead heatsinking |
| Dynamic Impedance | 110 Ω at IZT = 4.5 mA - quantifies voltage shift under small-signal current variation; critical for ripple rejection |
| Max Reverse Leakage | 5 μA at VR = 42.6 V - ensures minimal quiescent current in high-impedance bias networks |
| Surge Current | 2000 mA (½-sine, 1/120 s) - withstands transient overvoltage events without degradation |
| Thermal Resistance | 45 °C/W (junction-to-lead, 10 mm) - enables thermal modeling for reliability in sealed enclosures |
| Operating Temp | −65 °C to +150 °C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
DO-41 (JEDEC DO-204AL) axial-lead plastic 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 | Forward conduction terminal / Zener cathode reference ground | Connected to circuit common when used as shunt regulator; defines 0 V reference point for VZ measurement |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to unregulated input; maintains 56 V relative to anode during reverse conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Reduces calibration drift in precision voltage references versus standard ±5% (A) or ±10% (no suffix) parts |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating-no lead content, full solderability retained |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to assembly-reduces manufacturing cost and handling risk |
| Low thermal resistance (45 °C/W) | Enables higher sustained power delivery than glass-body equivalents-supports tighter thermal design margins |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model discharges without parameter shift-reduces test screening overhead |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulators or switching converter error amplifiers. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 56 V threshold for error comparator input. Use Value: ±2% tolerance ensures output voltage accuracy remains within 0.5% over line/load/temperature in 12 V–48 V systems. | Use Scenario: Clamping transient spikes on DC bus lines in motor drives or telecom power modules. IC Role / Device Role / Timing Role: Crowbar element diverting excess energy to ground when bus exceeds 56 V. Use Value: 2000 mA surge rating absorbs 100 ms overvoltage events without failure-extends system MTBF. |
| Voltage Monitor Threshold | Calibration Standard |
Use Scenario: Detecting undervoltage or overvoltage conditions in battery management systems. IC Role / Device Role / Timing Role: Input to comparator circuit triggering shutdown when sensed voltage crosses 56 V. Use Value: Low 5 μA leakage at 42.6 V prevents false triggers in high-impedance divider networks. | Use Scenario: Providing traceable reference for field calibration of multimeters and bench power supplies. IC Role / Device Role / Timing Role: Stable 56 V source against which DMMs verify full-scale accuracy. Use Value: 110 Ω dynamic impedance ensures <0.5 V deviation across 1–10 mA test current sweep-meets ANSI C12.1 metrology requirements. |
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 nominal, but ±5% tolerance (A suffix) vs. ±2% (C suffix) | Less suitable for precision references; acceptable for general-purpose clamping | Select 1N4758CPE3/TR8 when ±2% tolerance is required; choose 1N4758A for cost-sensitive non-critical designs |
| MMSZ5256ET1G | Surface-mount SOD-123 package, 56 V ±5%, 500 mW rating, 100 Ω ZZT | Not drop-in compatible; requires PCB redesign; lower power limits use in space-constrained apps | Choose MMSZ5256ET1G only if SMT layout and 500 mW dissipation are acceptable; 1N4758CPE3/TR8 retains axial-lead serviceability and 1 W capability |
Compared with 1N4758A and MMSZ5256ET1G, the 1N4758CPE3/TR8 delivers superior voltage accuracy and higher power handling in through-hole form-making it optimal for industrial power supplies where calibration stability and thermal margin are prioritized over footprint size.
Availability
1N4758CPE3/TR8 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and voltage monitor threshold applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N4758CPE3/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 designed specifically for robust, cost-effective voltage regulation in harsh-environment power systems-emphasizing thermal resilience, ESD immunity, and JEDEC-standard mechanical compatibility.
FAQ
What is the Zener voltage tolerance of the 1N4758CPE3/TR8?
The 1N4758CPE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its measured breakdown voltage at 4.5 mA test current falls between 54.88 V and 57.12 V at 25 °C lead temperature. This tighter tolerance supports precision applications such as feedback references where standard ±5% (A suffix) parts would introduce unacceptable output variation.
Does the 1N4758CPE3/TR8 require dry packing before reflow soldering?
No, the 1N4758CPE3/TR8 does not require dry packing. It is classified as Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without baking. This eliminates pre-soldering bake steps and reduces handling risk-confirmed in Microsemi's official datasheet revision C (2005).
What is the maximum surge current rating for the 1N4758CPE3/TR8?
The 1N4758CPE3/TR8 is rated for a maximum surge current (ISM) of 2000 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating validates its ability to absorb short-duration overvoltage transients in DC power rails without parametric shift or catastrophic failure-critical for industrial motor drive protection circuits.
How does the thermal resistance of the 1N4758CPE3/TR8 compare to glass-body Zeners?
The 1N4758CPE3/TR8 exhibits a junction-to-lead thermal resistance of 45 °C/W at 10 mm lead length-lower than equivalent glass-body (G-suffix) versions due to improved heat transfer through its plastic molded epoxy body. This allows higher sustained power delivery and relaxed board-level thermal design, especially in enclosed or convection-limited environments.
Is the 1N4758CPE3/TR8 RoHS compliant?
Yes, the 1N4758CPE3/TR8 is RoHS compliant, as confirmed by the "e3" suffix in its part number. Microsemi specifies this denotes RoHS-compliant annealed matte-tin plating on leads and adherence to EU Directive 2011/65/EU. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
1N4758CPE3/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):
- 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)
1N4758CPE3/TR8 FAQ
1.How can I place an order for 1N4758CPE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4758CPE3/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 1N4758CPE3/TR8 reliable?
The price and inventory of 1N4758CPE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4758CPE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4758CPE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4758CPE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4758CPE3/TR8?
1N4758CPE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4758CPE3/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 1N4758CPE3/TR8?
For technical support, including 1N4758CPE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4758CPE3/TR8 requirements.
6.How does Aetrix verify that 1N4758CPE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4758CPE3/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 1N4758CPE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4758CPE3/TR8?
All 1N4758CPE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4758CPE3/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 1N4758CPE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4758CPE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4758CPE3/TR8 Tags
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MMBZ5240B-7-F
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MM5Z5V1ST1G
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