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Microchip Technology 1N4734APE3/TR8
- Part No.:
- 1N4734APE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4734APE3/TR8.pdf
- Description:
- DIODE ZENER 5.6V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,566
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Product details
Overview
1N4734APE3/TR8 from Microsemi is a 5.6 V, ±5% tolerance, 1 W silicon Zener diode in DO-41 plastic package, rated for 45 mA test current (IZT), 5 Ω dynamic impedance (ZZT), and 162 mA maximum regulator current (IZM) at 50°C. It provides stable voltage regulation in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N4734APE3/TR8 datasheet, 1N4734APE3/TR8 pinout, 1N4734APE3/TR8 application, or 1N4734APE3/TR8 equivalent, key selection factors include its 5.6 V nominal Zener voltage, 1 W steady-state power dissipation at TL < 105°C, DO-41 axial-leaded mechanical form, RoHS-compliant matte-tin plating, and 5% voltage tolerance under JEDEC 1N4734A specification.
Technical Context
This Zener operates in reverse breakdown to maintain a stable 5.6 V reference across a wide operating current range (1–162 mA) and temperature span (−65°C to +150°C). Its low 5 Ω dynamic impedance at 45 mA ensures tight regulation under varying load conditions.
The device uses a void-free thermosetting epoxy case (UL94V-0), tin-lead or RoHS-compliant matte-tin terminals, and cathode band polarity marking. Thermal resistance is 45°C/W junction-to-lead (3/8″ lead length) and 105°C/W junction-to-ambient on FR4 with defined copper pad geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V ±5% at IZT = 45 mA - defines precise regulation point for feedback loops and reference rails |
| Power Dissipation | 1.0 W at TL < 105°C - sets maximum continuous thermal load on leads without derating |
| Dynamic Impedance (ZZT) | 5 Ω at IZT = 45 mA - determines output voltage variation under changing load current |
| Max Regulator Current (IZM) | 162 mA at TA = 50°C - establishes upper safe operating current limit before thermal runaway |
| Reverse Leakage (IR) | 10 μA max at VR = 2 V - ensures minimal quiescent current in standby or high-impedance bias networks |
| Forward Voltage (VF) | 1.2 V max at IF = 200 mA - supports use as clamping diode in bidirectional protection schemes |
| Thermal Resistance | 45°C/W junction-to-lead - enables accurate thermal design when mounted with 10 mm lead length |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded 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 | Non-banded end | Connected to lower-potential node in reverse-biased Zener configuration |
| Cathode | Banded end | Connected to higher-potential node; Zener regulation occurs with cathode positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N4734A compliance | Guarantees interchangeability with legacy designs using same voltage/tolerance spec |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating and no lead exemptions required |
| Moisture Sensitivity Level 1 | Enables direct PCB assembly without dry-pack baking or floor-life tracking |
| Low thermal resistance (45°C/W) | Supports higher power operation than glass-body equivalents (e.g., 1N4734A-G) under identical lead-mount conditions |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for special handling during manual 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 reference element providing fixed 5.6 V threshold for error amplifier comparison. Use Value: Maintains ±5% output accuracy over −65°C to +150°C and 1–162 mA load range due to low ZZT and stable TC. | Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes exceeding 5.6 V. IC Role / Device Role / Timing Role: Shunt clamp absorbing surge energy by conducting excess current above 5.6 V. Use Value: Limits clamped voltage to ≤5.6 V + (IZ × ZZT), with 162 mA IZM enabling robust 100–300 mA surge handling. |
| Voltage Monitor Threshold | Current Source Bias |
Use Scenario: Detecting undervoltage or overvoltage conditions in battery-powered instrumentation. IC Role / Device Role / Timing Role: Precision threshold element in comparator input circuitry. Use Value: Delivers repeatable 5.6 V trip point with <10 μA leakage at 2 V, minimizing false triggers in high-impedance sensing nodes. | Use Scenario: Establishing stable bias current for LED drivers or op-amp input stages. IC Role / Device Role / Timing Role: Constant-voltage source setting emitter/base current via series resistor. Use Value: Enables predictable 5.6 V reference with 5 Ω dynamic impedance, reducing current drift under supply ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A-T | No "e3" RoHS suffix; Sn/Pb terminations; same VZ, IZT, ZZT, and package | Not suitable for lead-free assembly; requires Pb-based solder process | Select when legacy Sn/Pb reflow is used and RoHS compliance is not required |
| MMSZ4704T1G | Surface-mount SOD-123 package; 5.6 V ±5%; 500 mW rating; 10 Ω ZZT at 10 mA | Lower power and different thermal path; unsuitable for 1 W continuous operation | Select only for space-constrained PCBs where 500 mW derated operation suffices |
Compared with 1N4734A-T and MMSZ4704T1G, the 1N4734APE3/TR8 uniquely combines full 1 W dissipation, DO-41 axial-mount flexibility, RoHS compliance, and JEDEC-standardized 5.6 V regulation-making it optimal for through-hole industrial power supplies requiring long-term reliability and regulatory alignment.
Availability
1N4734APE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and test equipment requiring stable component supply with full RoHS compliance and JEDEC-standard Zener performance.
Supply support for 1N4734APE3/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 1N47xxAP series was designed specifically for general-purpose voltage regulation in cost-sensitive, high-volume industrial and commercial power systems where JEDEC standardization, thermal robustness, and moisture-insensitive packaging are critical.
FAQ
What is the Zener voltage tolerance of the 1N4734APE3/TR8?
The 1N4734APE3/TR8 has a nominal Zener voltage of 5.6 V with a tolerance of ±5%, as confirmed by the "A" suffix in its JEDEC designation and verified in Microsemi's official datasheet revision C. This tolerance applies at 45 mA test current and 25°C lead temperature. The "e3" suffix indicates RoHS compliance but does not affect voltage tolerance specifications.
Can the 1N4734APE3/TR8 be used in surface-mount designs?
No, the 1N4734APE3/TR8 is packaged in DO-41 (DO-204AL) axial-leaded plastic format and is intended for through-hole mounting. For surface-mount alternatives, consider the MMSZ4704T1G (SOD-123) or SMAJ4734A (SMA), though both differ in power rating, impedance, and thermal behavior compared to the 1N4734APE3/TR8.
What is the maximum continuous current the 1N4734APE3/TR8 can handle?
The 1N4734APE3/TR8 supports a maximum regulator current (IZM) of 162 mA at 50°C ambient temperature when mounted on an FR4 board with specified copper geometry. At higher temperatures, derating applies per Figure 1 in the datasheet; at 25°C lead temperature, full 1 W dissipation allows ~179 mA before exceeding thermal limits.
Does the 1N4734APE3/TR8 require baking before reflow soldering?
No, the 1N4734APE3/TR8 is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it may be assembled directly without dry-pack baking or floor-life controls. Its plastic encapsulation and Level 1 classification eliminate moisture-related popcorning risk during standard reflow profiles up to 260°C for 10 seconds.
How does the thermal resistance of the 1N4734APE3/TR8 compare to glass-body versions?
The 1N4734APE3/TR8 exhibits 45°C/W junction-to-lead thermal resistance at 3/8″ lead length-lower than equivalent glass-body variants (e.g., 1N4734A-G) due to superior heat conduction through its plastic molded epoxy case. This enables higher sustained power handling in lead-mounted configurations without additional heatsinking.
1N4734APE3/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):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 2 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)
1N4734APE3/TR8 FAQ
1.How can I place an order for 1N4734APE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4734APE3/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 1N4734APE3/TR8 reliable?
The price and inventory of 1N4734APE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4734APE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4734APE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4734APE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4734APE3/TR8?
1N4734APE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4734APE3/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 1N4734APE3/TR8?
For technical support, including 1N4734APE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4734APE3/TR8 requirements.
6.How does Aetrix verify that 1N4734APE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4734APE3/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 1N4734APE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4734APE3/TR8?
All 1N4734APE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4734APE3/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 1N4734APE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4734APE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4734APE3/TR8 Tags
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