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Microchip Technology 1N4754PE3/TR8
- Part No.:
- 1N4754PE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4754PE3/TR8.pdf
- Description:
- DIODE ZENER 39V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,637
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Product details
Overview
1N4754PE3/TR8 from Microsemi is a 1.0 W, 39 V ±5% plastic-encapsulated Zener diode in DO-41 package, rated for 6.5 mA test current, 23 Ω dynamic impedance at IZT, and 1000 mA maximum regulator current at TL = 50°C. It delivers stable voltage regulation in power supply reference, overvoltage protection, and biasing circuits across industrial temperature range.
For engineers reviewing the 1N4754PE3/TR8 datasheet, 1N4754PE3/TR8 pinout, 1N4754PE3/TR8 application, or 1N4754PE3/TR8 equivalent, key selection factors include its 39 V nominal Zener voltage, DO-41 axial-leaded package with cathode band marking, 45 °C/W junction-to-lead thermal resistance, RoHS-compliant matte-tin plating, and EIA-296 tape-and-reel packaging (TR8 suffix).
Technical Context
This Zener operates in reverse breakdown to maintain a stable 39 V reference across a wide current range (5–1000 mA), with sharp knee characteristics verified by dual-point Zener impedance measurement per MicroNote 202. Its 23 Ω dynamic impedance at 6.5 mA ensures low AC ripple sensitivity in regulation loops.
The device uses void-free UL94V-0 thermosetting epoxy encapsulation, exhibits <1 μA reverse leakage at 29.7 V, and maintains regulation from –65°C to +150°C. Its 1.2 V forward voltage at 200 mA supports bidirectional testing and polarity verification during board-level validation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±5% at 6.5 mA - defines precise DC reference level for feedback networks |
| Power Dissipation | 1.0 W at 25°C lead temperature - sets maximum continuous DC power handling before derating |
| Dynamic Impedance (ZZT) | 23 Ω at 6.5 mA - determines AC voltage variation under changing load current |
| Max Regulator Current (IZM) | 1000 mA at TL = 50°C - establishes peak steady-state current capability in shunt regulation |
| Reverse Leakage (IR) | <1 μA at 29.7 V - ensures minimal parasitic current draw in high-impedance bias networks |
| Thermal Resistance (RθJL) | 45 °C/W junction-to-lead - enables thermal design using 3/8″ lead length as heatsink path |
| Forward Voltage (VF) | ≤1.2 V at 200 mA - allows functional continuity check and polarity confirmation with standard test equipment |
Pinout & Package
DO-41 (JEDEC DO-204AL) axial-leaded plastic package with cathode indicated by single black 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 | Non-banded lead | Connected to lower-potential node; carries reverse leakage and forward conduction current |
| Cathode | Banded lead | Connected to regulated output node; sustains 39 V reverse bias during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N4754A series | Ensures standardized electrical behavior and interchangeability across qualified suppliers |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for SMT-compatible handling |
| RoHS-compliant "e3" suffix | Confirms lead-free matte-tin plating meeting EU Directive 2011/65/EU and J-STD-609A Class 1 |
| Tape-and-reel "TR8" packaging | Enables automated pick-and-place assembly per EIA-296 standard with 8 mm carrier tape |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Permits safe handling without special grounding protocols in standard assembly environments |
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: Provides precise 39 V reference point for error amplifier comparison. Use Value: Maintains ±5% output accuracy over 5–1000 mA operating range and –65°C to +150°C ambient. | Use Scenario: Protecting downstream circuitry from transient voltage spikes exceeding 39 V. IC Role / Device Role / Timing Role: Shunts excess current when input voltage exceeds Zener breakdown threshold. Use Value: Limits clamped voltage to ≤39.5 V (max) with 23 Ω dynamic impedance minimizing overshoot energy. |
| Bias Network Stabilizer | Temperature-Compensated Reference |
Use Scenario: Setting fixed bias points for op-amp input stages or transistor amplifiers. IC Role / Device Role / Timing Role: Supplies stable DC voltage to high-impedance nodes requiring low drift. Use Value: Delivers <1 μA leakage at 29.7 V, preserving bias current integrity in nanoamp-level circuits. | Use Scenario: Serving as one leg of a temperature-compensated Zener pair (e.g., with 1N4733A). IC Role / Device Role / Timing Role: Contributes predictable positive tempco to offset negative tempco of lower-voltage Zener. Use Value: Exhibits +5.5 mV/°C tempco near 39 V (per Figure 3), enabling matched compensation within ±0.5 mV/°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4754A | No "e3" RoHS suffix; Sn/Pb plating; same electrical specs and DO-41 package | Not compliant with EU RoHS Directive 2011/65/EU; requires exemption documentation for new designs | Select 1N4754A only for legacy repair or non-RoHS programs where Sn/Pb solder is used |
| MMSZ4702T1G | Surface-mount SOD-123 package; 39 V ±5%; 500 mW rating; 30 Ω ZZT at 5 mA | Lower power and thermal mass; unsuitable for >500 mW continuous dissipation or high-surge scenarios | Choose MMSZ4702T1G for space-constrained PCBs where 1W dissipation is not required |
Compared with 1N4754A and MMSZ4702T1G, the 1N4754PE3/TR8 uniquely combines 1W power rating, DO-41 axial-leaded mechanical robustness, RoHS compliance, and EIA-296 tape-and-reel automation support-making it optimal for industrial power supplies requiring long-term component availability and thermal reliability.
Availability
1N4754PE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line-card protection, and automotive body-control modules requiring stable component supply and long-lifecycle support.
Supply support for 1N4754PE3/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 engineered for ruggedized voltage regulation in mission-critical systems, emphasizing thermal stability, moisture immunity, and extended temperature operation from –65°C to +150°C.
FAQ
What is the Zener voltage tolerance of the 1N4754PE3/TR8?
The 1N4754PE3/TR8 has a nominal Zener voltage of 39 V with a ±5% tolerance, as indicated by the "A" suffix in its JEDEC designation. This means the actual measured VZ falls between 37.05 V and 40.95 V when tested at 6.5 mA and 25°C lead temperature. The tolerance is guaranteed per JEDEC registration and applies across the full operating temperature range.
Does the 1N4754PE3/TR8 require dry packing before reflow soldering?
No, the 1N4754PE3/TR8 does not require dry packing. It is classified as Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life at ≤30°C/60% RH and may be assembled directly from reel without baking. This eliminates moisture-related popcorning risk during standard IR or convection reflow profiles.
What is the maximum surge current rating for the 1N4754PE3/TR8?
The 1N4754PE3/TR8 has a maximum surge current (ISM) rating of 1000 mA, measured using a ½ sine-wave pulse of 1/120 second duration at 25°C ambient. This rating applies to short-duration transients such as ESD or inductive kickback, and must be derated for repeated surges or elevated ambient temperatures per the power derating curve in the Microsemi datasheet.
Can the 1N4754PE3/TR8 be used in surface-mount designs?
No, the 1N4754PE3/TR8 is an axial-leaded DO-41 device and is not suitable for surface-mount assembly. For SMT equivalents, consider the SMAJ4754A or MLL4754A-both share identical electrical specifications but use DO-214AC and SOD-123 packages respectively. The TR8 tape-and-reel format supports automated through-hole insertion, not pick-and-place.
How does the thermal resistance of the 1N4754PE3/TR8 affect PCB layout?
The 1N4754PE3/TR8 has a junction-to-lead thermal resistance of 45 °C/W when measured at 3/8″ (10 mm) lead length from the body. To achieve rated 1W dissipation, PCB traces connected to each lead must provide adequate copper area (≥4 mm² pads) and thermal relief control; mounting on FR4 with 1 oz Cu yields 105 °C/W junction-to-ambient, requiring derating above 45°C ambient per Figure 1.
1N4754PE3/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):
- 39 V
- Tolerance:
- ±10%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 29.7 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)
1N4754PE3/TR8 FAQ
1.How can I place an order for 1N4754PE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4754PE3/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 1N4754PE3/TR8 reliable?
The price and inventory of 1N4754PE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4754PE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4754PE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4754PE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4754PE3/TR8?
1N4754PE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4754PE3/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 1N4754PE3/TR8?
For technical support, including 1N4754PE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4754PE3/TR8 requirements.
6.How does Aetrix verify that 1N4754PE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4754PE3/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 1N4754PE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4754PE3/TR8?
All 1N4754PE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4754PE3/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 1N4754PE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4754PE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4754PE3/TR8 Tags
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