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Microchip Technology 1N4750APE3/TR8
- Part No.:
- 1N4750APE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4750APE3/TR8.pdf
- Description:
- DIODE ZENER 27V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,861
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Product details
Overview
1N4750APE3/TR8 from Microsemi is a 27 V, 5% tolerance, 1 W axial-lead silicon Zener diode in DO-41 plastic package, rated for 9.5 mA test current (IZT), 35 Ω dynamic impedance (ZZT), and 5 μA reverse leakage at 20.6 V (VR), used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4750APE3/TR8 datasheet, 1N4750APE3/TR8 pinout, 1N4750APE3/TR8 application, or 1N4750APE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (45 °C/W junction-to-lead), surge current rating (750 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR8).
Technical Context
This device operates in reverse breakdown to maintain stable output voltage across varying load and line conditions. It exhibits a sharp knee at IZK = 0.25 mA with ZZK = 35 Ω and supports continuous regulation from 1 mA to 750 mA at TA ≤ 45 °C on FR4 board.
Its temperature coefficient is +10 mV/°C near 27 V, enabling predictable drift compensation in analog references. The DO-41 package provides flexible through-hole mounting with cathode band polarity marking and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±5% at IZT = 9.5 mA - defines nominal regulation point with tight production control |
| Power Dissipation | 1.0 W at TL < 105 °C (3/8″ lead length) - sets maximum steady-state thermal load |
| Dynamic Impedance | 35 Ω at IZT = 9.5 mA - determines output voltage variation under load transients |
| Reverse Leakage | 5 μA max at VR = 20.6 V - ensures low quiescent current in standby regulation |
| Surge Current | 750 mA peak (½-sine, 1/120 s) - withstands short-duration overvoltage events |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design with standard lead-forming practices |
| Operating Temp | –65 °C to +150 °C - supports industrial and automotive under-hood environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener regulation node | Banded end; connected to regulated voltage rail; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Fully compliant with JEDEC 1N4750A specification for interchangeability and testing |
| RoHS-compliant "e3" suffix | Matte-tin terminal plating meeting EU RoHS Directive 2011/65/EU requirements |
| Tape-and-reel packaging | TR8 designation indicates EIA-296 standard 8 mm tape, 1000 pcs/reel for automated assembly |
| Moisture sensitivity Level 1 | No dry pack required per IPC/JEDEC J-STD-020B - simplifies handling and storage |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - no special ESD controls needed during assembly |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or discrete transistor-based regulators. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference in error amplifier feedback loop. Use Value: Maintains 27 V reference with ±5% tolerance and 35 Ω dynamic impedance, minimizing output drift under load changes. | Use Scenario: Protecting downstream circuitry from transient overvoltage spikes on DC rails. IC Role / Device Role / Timing Role: Shunt clamping device that conducts above 27 V to limit rail excursion. Use Value: Absorbs 750 mA surge current for 1/120 s, preventing damage to sensitive logic or analog components. |
| Signal Level Translation | Current Source Biasing |
Use Scenario: Generating fixed bias voltages for op-amp input stages or comparator thresholds. IC Role / Device Role / Timing Role: Precision DC voltage source for analog signal conditioning circuits. Use Value: Delivers stable 27 V with <5 μA leakage at 20.6 V, reducing input offset errors in high-impedance nodes. | Use Scenario: Setting constant current in LED driver or sensor excitation circuits via series resistor. IC Role / Device Role / Timing Role: Voltage reference defining current magnitude in simple two-terminal current sources. Use Value: Enables accurate 1 mA–750 mA current setting with predictable thermal coefficient (+10 mV/°C) for temperature-aware designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4750A | No "e3" RoHS suffix; Sn/Pb plating; same electrical specs and DO-41 package | Not suitable for RoHS-compliant production; otherwise functionally identical | Select when legacy Sn/Pb assembly is required and RoHS exemption applies |
| MMSZ5256ET1G | Surface-mount SOD-123 package; 27 V ±5%; 500 mW rating; 30 Ω Zzt | Limited to lower-power PCB space-constrained designs; not drop-in replacement | Choose for automated SMT lines where board area is critical and 0.5 W suffices |
Compared with 1N4750A and MMSZ5256ET1G, the 1N4750APE3/TR8 offers full 1 W dissipation in through-hole format with RoHS compliance and tape-and-reel delivery-making it optimal for industrial power supplies requiring robust, compliant, and assembly-ready Zener regulation.
Availability
1N4750APE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, analog instrumentation, overvoltage protection circuits, and RoHS-compliant manufacturing requiring stable component supply and traceable sourcing.
Supply support for 1N4750APE3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N4750APE3/TR8 belongs to Microsemi's legacy 1N47xxAP Zener diode family, engineered for stable voltage regulation in harsh-environment power systems where reliability, thermal performance, and JEDEC-standard compatibility are critical.
FAQ
What is the Zener voltage tolerance for 1N4750APE3/TR8?
The 1N4750APE3/TR8 has a nominal Zener voltage of 27 V with a tolerance of ±5%, as indicated by the "A" suffix in the part number per JEDEC registration. This tolerance is verified at 9.5 mA test current and 25 °C lead temperature, ensuring consistent regulation across production lots.
Does 1N4750APE3/TR8 require dry packing before PCB assembly?
No, the 1N4750APE3/TR8 is moisture sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored and assembled without dry pack or baking. Its plastic DO-41 package and void-free epoxy body eliminate moisture absorption concerns during standard SMT or through-hole reflow processes.
What is the maximum surge current rating for 1N4750APE3/TR8?
The 1N4750APE3/TR8 is rated for a maximum non-repetitive reverse surge current (ISM) of 750 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating supports transient suppression in DC power rails subject to switching spikes or load dump events.
Is 1N4750APE3/TR8 compatible with lead-free soldering processes?
Yes, the 1N4750APE3/TR8 features RoHS-compliant annealed matte-tin plating qualified for soldering at 260 °C for 10 seconds maximum, fully supporting lead-free reflow profiles. Its terminals meet MIL-STD-750 Method 2026 for solderability and thermal endurance.
How does the thermal resistance of 1N4750APE3/TR8 affect PCB layout?
The 1N4750APE3/TR8 has a junction-to-lead thermal resistance of 45 °C/W at 3/8″ (10 mm) lead length, meaning PCB layout should maintain ≥10 mm straight lead length from package body to mounting pad. Shorter leads increase thermal resistance and risk exceeding 1 W derated power at elevated ambient temperatures.
1N4750APE3/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):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 20.6 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)
1N4750APE3/TR8 FAQ
1.How can I place an order for 1N4750APE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4750APE3/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 1N4750APE3/TR8 reliable?
The price and inventory of 1N4750APE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4750APE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4750APE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4750APE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4750APE3/TR8?
1N4750APE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4750APE3/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 1N4750APE3/TR8?
For technical support, including 1N4750APE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4750APE3/TR8 requirements.
6.How does Aetrix verify that 1N4750APE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4750APE3/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 1N4750APE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4750APE3/TR8?
All 1N4750APE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4750APE3/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 1N4750APE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4750APE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4750APE3/TR8 Tags
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