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Microchip Technology 1N4758APE3/TR8
- Part No.:
- 1N4758APE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4758APE3/TR8.pdf
- Description:
- DIODE ZENER 56V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,618
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Product details
Overview
1N4758APE3/TR8 from Microsemi is a 1.0 W plastic-encapsulated Zener diode with nominal Zener voltage of 56 V, ±5% tolerance (A suffix), 4.5 mA test current (IZT), 110 Ω dynamic impedance at IZT, and maximum reverse current of 5 μA at 42.6 V. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N4758APE3/TR8 datasheet, 1N4758APE3/TR8 pinout, 1N4758APE3/TR8 application, or 1N4758APE3/TR8 equivalent, key selection factors include its DO-41 package thermal resistance (45 °C/W junction-to-lead), 1500 mA surge current rating, RoHS-compliant matte-tin plating, and moisture sensitivity level 1 compliance without dry pack requirement.
Technical Context
This axial-lead Zener operates in reverse breakdown to maintain stable voltage across varying load and line conditions. Its 56 V regulation point targets mid-range voltage reference needs where higher-voltage Zeners like 1N4760A (68 V) or lower-voltage variants like 1N4757A (51 V) are unsuitable.
Designed for through-hole mounting on FR4 PCBs, it delivers 1.0 W steady-state dissipation at lead temperature <105 °C or ambient <45 °C with specified copper pad layout. Its 0.7 g weight and UL94V-0 epoxy case support reliable mechanical integration in space-constrained industrial assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 56 V ±5% - precise regulation point for 54–58 V reference applications |
| Power Dissipation | 1.0 W at TL < 105 °C - defines maximum continuous thermal load with 3/8" lead length |
| Test Current (IZT) | 4.5 mA - operating point where Vz and ZZT are guaranteed per JEDEC spec |
| Dynamic Impedance (ZZT) | 110 Ω @ IZT - low AC impedance ensures stable output under small-signal ripple |
| Reverse Current (IR) | 5 μA @ 42.6 V - leakage threshold confirming sharp knee and low standby loss |
| Surge Current (ISM) | 2000 mA - withstands transient overloads per ½-sine 1/120 s pulse test |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design with known lead-path conduction |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by band; banded end must be held positive relative to anode during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink in forward bias; reference node in reverse-bias regulation | Connected to system ground or lowest potential node in shunt regulator topology |
| Cathode | Current source in reverse breakdown; regulated output node | Banded terminal connected to input rail; provides stable 56 V to downstream circuitry |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N4758A series | Industry-standard footprint and electrical behavior ensuring design continuity and sourcing flexibility |
| Plastic P-suffix construction | Lower thermal resistance vs. glass-body G-suffix variants, improving power handling in compact layouts |
| e3 RoHS-compliant plating | Matte-tin termination compatible with lead-free reflow and legacy Sn/Pb solder processes |
| Moisture Sensitivity Level 1 | No dry pack required before assembly-reduces handling cost and process steps |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020-enables safe handling in standard production environments |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or discrete op-amp-based references. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 56 V setpoint for error amplifier comparison. Use Value: Maintains ±5% regulation accuracy across -65 °C to +150 °C, enabling robust performance in unregulated DC inputs. | Use Scenario: Protecting sensitive analog front-ends from transient voltage spikes exceeding 56 V. IC Role / Device Role / Timing Role: Crowbar element that conducts excess energy to ground when input exceeds Vz. Use Value: 2000 mA surge current rating absorbs short-duration transients without degradation. |
| Voltage Monitor Threshold | Field-Programmable Logic Bias |
Use Scenario: Setting trip point for comparator-based undervoltage/overvoltage detection circuits. IC Role / Device Role / Timing Role: Stable reference against which sensed voltage is compared to trigger fault signals. Use Value: Low 110 Ω dynamic impedance minimizes voltage shift under varying comparator input bias currents. | Use Scenario: Providing bias voltage to configuration memory or I/O banks in FPGAs requiring 56 V auxiliary rails. IC Role / Device Role / Timing Role: Local regulation source decoupled from main power domain for noise isolation. Use Value: UL94V-0 epoxy case and 0.7 g mass support mechanical reliability in high-vibration embedded systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4758A-T | Same 56 V, ±5%, DO-41, but non-RoHS tin-lead plating; no e3 suffix | Not suitable for lead-free assembly; otherwise identical regulation behavior | Select 1N4758A-T only if Sn/Pb soldering is mandated and RoHS exemption applies |
| MMBZ5256BS-7-F | Surface-mount SOD-123 package; same 56 V, ±5%; 200 mW rating; 50 Ω ZZT | Limited to low-power signal-level clamping; cannot replace 1N4758APE3/TR8 in 1 W applications | Choose MMBZ5256BS-7-F only for space-constrained PCBs where thermal derating permits ≤200 mW operation |
Compared with 1N4758A-T and MMBZ5256BS-7-F, the 1N4758APE3/TR8 uniquely combines 1 W power handling, RoHS compliance, and DO-41 mechanical robustness-making it the sole option for through-hole, high-reliability, lead-free 56 V shunt regulation.
Availability
1N4758APE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and telecom infrastructure equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N4758APE3/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 developed to deliver JEDEC-standard Zener regulation with enhanced thermal performance and RoHS compliance in plastic packages for ruggedized power management designs.
FAQ
What is the Zener voltage tolerance of the 1N4758APE3/TR8?
The 1N4758APE3/TR8 has a nominal Zener voltage of 56 V with ±5% tolerance, as indicated by the "A" suffix in its part number per JEDEC registration. This means the actual measured Vz at 4.5 mA test current falls between 53.2 V and 58.8 V under standard test conditions (TL = 25 °C ±8 °C, 90 seconds after current application). The tolerance is guaranteed across the full operating temperature range of –65 °C to +150 °C.
Does the 1N4758APE3/TR8 require dry packing before PCB assembly?
No, the 1N4758APE3/TR8 does not require dry packing prior to assembly. It is moisture sensitivity level 1 (MSL-1) per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without exposure to moisture-related damage during reflow. This eliminates baking steps and simplifies manufacturing logistics for high-volume production of boards using the 1N4758APE3/TR8.
What is the maximum surge current rating for the 1N4758APE3/TR8?
The 1N4758APE3/TR8 has a maximum surge current (ISM) rating of 2000 mA, measured using a ½-sine wave or equivalent sine wave pulse of 1/120 second duration at 25 °C ambient. This rating reflects its ability to absorb short-duration overvoltage transients without parametric shift or failure, making it suitable for clamping applications in industrial power rails where lightning-induced surges or inductive kickback may occur.
How does the thermal resistance of the 1N4758APE3/TR8 compare between junction-to-lead and junction-to-ambient?
The 1N4758APE3/TR8 has a junction-to-lead thermal resistance of 45 °C/W when measured at 3/8 inch (10 mm) lead length from the body, while its junction-to-ambient resistance is 105 °C/W when mounted on an FR4 PCB with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces. This 2.3× difference highlights the importance of proper lead termination and heatsinking-designers must use the junction-to-lead value for lead-mounted thermal calculations and the junction-to-ambient value only under the specified board layout.
Is the 1N4758APE3/TR8 compatible with both lead-free and tin-lead soldering processes?
Yes, the 1N4758APE3/TR8 features RoHS-compliant annealed matte-tin plating that is qualified for both lead-free reflow (up to 260 °C for 10 s) and traditional tin-lead wave or hand soldering. Its termination meets MIL-STD-750 Method 2026 for solderability, ensuring reliable wetting and joint formation regardless of solder alloy. This dual-process compatibility supports mixed-technology manufacturing lines using the 1N4758APE3/TR8.
1N4758APE3/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:
- ±5%
- 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)
1N4758APE3/TR8 FAQ
1.How can I place an order for 1N4758APE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4758APE3/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 1N4758APE3/TR8 reliable?
The price and inventory of 1N4758APE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4758APE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4758APE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4758APE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4758APE3/TR8?
1N4758APE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4758APE3/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 1N4758APE3/TR8?
For technical support, including 1N4758APE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4758APE3/TR8 requirements.
6.How does Aetrix verify that 1N4758APE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4758APE3/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 1N4758APE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4758APE3/TR8?
All 1N4758APE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4758APE3/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 1N4758APE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4758APE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4758APE3/TR8 Tags
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