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Microchip Technology 1N4758APE3/TR12
- Part No.:
- 1N4758APE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4758APE3/TR12.pdf
- Description:
- DIODE ZENER 56V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,403
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Product details
Overview
1N4758APE3/TR12 from Microsemi is a 1.0 W, 56 V ±5% Zener diode in DO-41 plastic package, rated for 4.5 mA test current, 110 Ω dynamic impedance at IZT, and 2000 mA maximum regulator current at TL = 50°C. It provides stable voltage regulation in power supply reference, overvoltage protection, and biasing circuits operating from -65°C to +150°C.
For engineers reviewing the 1N4758APE3/TR12 datasheet, 1N4758APE3/TR12 pinout, 1N4758APE3/TR12 application, or 1N4758APE3/TR12 equivalent, key selection factors include its 56 V nominal Zener voltage with 5% tolerance, 1.0 W steady-state power rating at TL < 105°C, RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR12) for automated assembly.
Technical Context
This axial-lead Zener diode operates in reverse breakdown to maintain a stable 56 V reference across a wide current range (IZK = 0.25 mA to IZM = 2000 mA), with low knee impedance (16 Ω at IZK) ensuring sharp regulation onset. 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 moisture sensitivity Level 1 per J-STD-020B (no dry pack required), UL94V-0 epoxy case, and polarity indicated by cathode band - requiring cathode to be biased positive relative to anode for regulation. Forward voltage is ≤1.2 V at 200 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±5% at IZT = 4.5 mA - defines precise regulation point for feedback and clamping circuits |
| Power Dissipation | 1.0 W at TL < 105°C - sets maximum continuous thermal load without derating on leaded mount |
| Dynamic Impedance (ZZT) | 110 Ω at IZT = 4.5 mA - determines output voltage variation under load transients |
| Max Regulator Current (IZM) | 2000 mA at TL = 50°C - defines peak safe reverse current before thermal runaway |
| Knee Impedance (ZZK) | 16 Ω at IZK = 0.25 mA - ensures stable regulation onset at low bias currents |
| Thermal Resistance | 45°C/W junction-to-lead - enables accurate junction temperature estimation from lead temperature |
| Operating Temperature | -65°C to +150°C - supports industrial, automotive, and aerospace environments without derating |
Pinout & Package
DO-41 (JEDEC DO-204AL) plastic axial-lead 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 | Reference ground node in Zener configuration | Connected to circuit ground or lower-potential rail; reverse-biased during regulation |
| Cathode | Regulated output node | Banded end; connected to input rail or voltage source; maintains 56 V relative to anode when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N47xxA registration | Industry-standard footprint and electrical behavior - ensures design reuse and sourcing flexibility |
| RoHS-compliant "e3" suffix | Matte-tin terminal plating meeting EU Directive 2011/65/EU - eliminates lead while maintaining solderability |
| Tape-and-reel packaging (TR12) | Standard EIA-296 compliant reel - enables high-speed pick-and-place assembly without manual handling |
| Moisture Sensitivity Level 1 | No dry pack or baking required before reflow - reduces manufacturing overhead and floor-life constraints |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - withstands handling without special static controls |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifiers. IC Role / Device Role / Timing Role: Zener reference element providing fixed 56 V threshold for comparator or op-amp input. Use Value: Maintains ±5% output accuracy across -65°C to +150°C and 0.25–2000 mA operating range. | Use Scenario: Clamping transient surges on 48 V DC bus lines in telecom or industrial control systems. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy to ground when voltage exceeds 56 V. Use Value: Withstands 2000 mA surge current and exhibits low ZZK (16 Ω) for fast response to overvoltage events. |
| Bias Network Stabilization | Temperature-Compensated Reference |
Use Scenario: Setting stable bias points for RF amplifier transistors or precision op-amp stages. IC Role / Device Role / Timing Role: Fixed-voltage node generator replacing resistive dividers where stability is critical. Use Value: Delivers 1.0 W power handling and 45°C/W thermal resistance - minimizes drift under varying ambient conditions. | Use Scenario: Paired with complementary tempco diodes to build zero-drift 56 V reference sources. IC Role / Device Role / Timing Role: Primary Zener element whose voltage coefficient (≈+3.5 mV/°C at 56 V) is actively compensated. Use Value: Known, repeatable tempco enables predictable compensation network design per Figure 3 of datasheet. |
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 with Pb-free matte-tin plating and no TR12 tape-and-reel packaging | Requires manual or bulk-feed placement; lacks EIA-296 compliance for SMT lines | Select when RoHS compliance is required but automated assembly is not used |
| MMSZ5256ET1G | Surface-mount SOD-123, 56 V ±5%, 500 mW - lower power, smaller footprint, higher ZZT (130 Ω) | Not suitable for >500 mW continuous dissipation; limited surge capability (500 mA) | Select only for space-constrained PCBs where thermal budget permits derating |
Compared with 1N4758A-T and MMSZ5256ET1G, the 1N4758APE3/TR12 offers full 1.0 W power handling, industry-standard axial DO-41 mounting, and factory-verified tape-and-reel compatibility - making it optimal for high-reliability through-hole or mixed-technology production where thermal robustness and assembly scalability are prioritized.
Availability
1N4758APE3/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and bias network stabilization requiring stable component supply across extended temperature ranges and high-volume manufacturing.
Supply support for 1N4758APE3/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, RF, and timing components for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed specifically for ruggedized voltage regulation in mission-critical power systems - emphasizing thermal stability, JEDEC standardization, and long-term parametric consistency under extreme environmental stress.
FAQ
What is the Zener voltage tolerance for 1N4758APE3/TR12?
The 1N4758APE3/TR12 has a nominal Zener voltage of 56 V with a tolerance of ±5%, as confirmed by the "A" suffix in the part number per Microsemi's JEDEC-registered specification. This tolerance applies at TL = 25°C and IZT = 4.5 mA, and remains valid across the full operating temperature range (-65°C to +150°C) per the published temperature coefficient curve.
Does 1N4758APE3/TR12 require dry packing before reflow soldering?
No, the 1N4758APE3/TR12 is moisture sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored and processed without dry pack or baking. Its void-free thermosetting epoxy body and Level 1 classification eliminate floor-life restrictions and pre-reflow handling steps - a verified feature documented in Microsemi's official datasheet revision C.
What is the maximum surge current rating for 1N4758APE3/TR12?
The 1N4758APE3/TR12 is rated for a maximum reverse surge current (ISM) of 2000 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25°C ambient. This rating is specified in the Electrical Characteristics table and reflects the device's ability to absorb transient energy without degradation when used in overvoltage clamp configurations.
Can 1N4758APE3/TR12 be used in surface-mount designs?
No - the 1N4758APE3/TR12 uses a DO-41 axial-lead package and is not compatible with surface-mount assembly. For SMT equivalents, Microsemi offers the SMAJ4758A and MLL4758A in DO-214AC and SOD-123 packages respectively; these share the same 56 V Zener voltage but differ in power rating, thermal performance, and mounting method.
What does the "TR12" suffix indicate in 1N4758APE3/TR12?
"TR12" denotes EIA-296 standard tape-and-reel packaging with 12 mm tape width and 1000 units per reel. This configuration enables automated pick-and-place insertion in through-hole assembly lines and is explicitly supported by Microsemi's packaging documentation - distinct from bulk or ammo-pack alternatives that lack reel-based feeding compatibility.
1N4758APE3/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):
- 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/TR12 FAQ
1.How can I place an order for 1N4758APE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4758APE3/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 1N4758APE3/TR12 reliable?
The price and inventory of 1N4758APE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4758APE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4758APE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4758APE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4758APE3/TR12?
1N4758APE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4758APE3/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 1N4758APE3/TR12?
For technical support, including 1N4758APE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4758APE3/TR12 requirements.
6.How does Aetrix verify that 1N4758APE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4758APE3/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 1N4758APE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4758APE3/TR12?
All 1N4758APE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4758APE3/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 1N4758APE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4758APE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4758APE3/TR12 Tags
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MM5Z5V1ST1G
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