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Microchip Technology 1N4734E3/TR13
- Part No.:
- 1N4734E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4734E3/TR13.pdf
- Description:
- DIODE ZENER 5.6V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,230
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Product details
Overview
1N4734E3/TR13 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 1N4734E3/TR13 datasheet, 1N4734E3/TR13 pinout, 1N4734E3/TR13 application, or 1N4734E3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (45 °C/W junction-to-lead), surge current rating (810 mA), RoHS compliance (e3 suffix), and tape-and-reel packaging (TR13).
Technical Context
This device operates in reverse breakdown to maintain a stable 5.6 V reference across a wide current range (1–162 mA). Its 5 Ω dynamic impedance at 45 mA ensures low output variation under load transients, while its 45 °C/W junction-to-lead thermal resistance supports reliable operation with minimal heatsinking.
The 1N4734E3/TR13 features a cathode band marking, tin-plated axial leads compliant with MIL-STD-750 Method 2026, and moisture sensitivity level 1 per J-STD-020B-eliminating dry-pack requirements. It is rated for -65°C to +150°C operating temperature and withstands 260°C soldering for 10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V ±5% at 45 mA - defines precise regulation point for feedback loops and reference rails |
| Power Dissipation | 1.0 W at 25°C lead temperature - sets maximum continuous DC power handling before derating |
| Dynamic Impedance (ZZT) | 5 Ω at IZT = 45 mA - determines output voltage stability under varying load current |
| Max Regulator Current (IZM) | 162 mA at TA = 50°C - establishes upper limit for sustained Zener conduction without thermal failure |
| Thermal Resistance | 45 °C/W junction-to-lead (3/8″ lead length) - enables thermal design with simple lead heatsinking |
| Reverse Leakage | 10 μA max at VR = 4.2 V - ensures low standby power loss in high-impedance bias networks |
| Surge Current (ISM) | 810 mA (½-sine, 1/120 s) - supports transient overvoltage clamping without degradation |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by colored band; leads are tin-plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during regulation; carries full Zener current when cathode is biased positive |
| Cathode | Zener breakdown terminal / regulation output | Banded end; connected to regulated voltage rail; must be held positive relative to anode to activate Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant "e3" termination | Matte-tin plating replaces Sn/Pb, enabling lead-free assembly without requalification |
| Tape-and-reel packaging ("TR13") | Standard EIA-296 format supports automated SMT placement despite axial-leaded form factor |
| Moisture Sensitivity Level 1 | No dry-pack or baking required prior to assembly-reduces handling cost and process risk |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020-no special ESD handling needed in production |
| Plastic encapsulation (P suffix) | Lower thermal resistance vs. glass-body variants-improves power handling in compact layouts |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulators or switching converter error amplifiers. IC Role / Device Role / Timing Role: Provides precise 5.6 V reference for TL431-like comparator inputs or op-amp setpoints. Use Value: 5 Ω dynamic impedance minimizes output drift under line/load transients, improving regulation accuracy. | Use Scenario: Clamping transient spikes on 5 V logic rails or sensor inputs. IC Role / Device Role / Timing Role: Acts as shunt protector by conducting excess energy above 5.6 V into ground. Use Value: 810 mA surge rating absorbs short-duration overvoltages without parametric shift or failure. |
| Industrial Sensor Biasing | Programmable Threshold Detection |
Use Scenario: Supplying stable excitation voltage to resistive bridge sensors in harsh environments. IC Role / Device Role / Timing Role: Delivers low-drift 5.6 V bias independent of input rail fluctuations. Use Value: ±5% tolerance and -65°C to +150°C operation ensure repeatable sensor output across temperature extremes. | Use Scenario: Setting trip point for comparator-based fault detection in motor drives or battery monitors. IC Role / Device Role / Timing Role: Defines accurate 5.6 V threshold against which analog signals are compared. Use Value: Sharp knee impedance (5 Ω) ensures fast, clean transitions-reducing false triggering near threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | No "e3" RoHS suffix; Sn/Pb terminations; same electrical specs and DO-41 package | Not suitable for lead-free assembly; requires Pb-based solder process | Select only if legacy Pb-process compatibility is required and RoHS exemption applies |
| MMSZ4704T1G | Surface-mount SOD-123 package; 5.6 V ±5%; 500 mW rating; 10 Ω ZZT at 20 mA | Lower power and higher impedance limit use in high-current or precision reference roles | Choose for space-constrained PCBs where 1 W dissipation is not required and layout allows SMT placement |
Compared with 1N4734A and MMSZ4704T1G, the 1N4734E3/TR13 uniquely combines RoHS compliance, 1 W power rating, low 5 Ω impedance, and tape-and-reel readiness-making it optimal for industrial-grade through-hole designs requiring regulatory compliance and robust transient handling.
Availability
1N4734E3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, sensor signal conditioning, overvoltage protection circuits, and programmable threshold detection requiring stable component supply and long-term lifecycle support.
Supply support for 1N4734E3/TR13 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 discrete components for aerospace, defense, and industrial markets.
The 1N47xx series was designed for general-purpose voltage regulation in ruggedized, thermally stable applications-emphasizing consistency across temperature, reliability under surge stress, and compatibility with military screening standards.
FAQ
What is the Zener voltage tolerance of the 1N4734E3/TR13?
The 1N4734E3/TR13 has a nominal Zener voltage of 5.6 V with a tolerance of ±5%, as confirmed by the "A" suffix in its base part number (1N4734A) and documented in Microsemi's official datasheet revision C. This tolerance applies at 45 mA test current and 25°C lead temperature. The "e3" and "TR13" suffixes denote RoHS-compliant terminations and tape-and-reel packaging, respectively, and do not affect voltage specification.
Does the 1N4734E3/TR13 require dry packing before PCB assembly?
No, the 1N4734E3/TR13 does not require dry packing. It is classified as Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without desiccant or baking. This eliminates moisture-related popcorning risks during reflow and reduces handling overhead in manufacturing-confirmed in Microsemi's datasheet under "Mechanical and Packaging".
What is the maximum steady-state power dissipation for the 1N4734E3/TR13?
The 1N4734E3/TR13 is rated for 1.0 W steady-state power dissipation at a lead temperature (TL) below 105°C with 3/8″ (10 mm) lead length from the body, or at ambient temperature (TA) below 45°C when mounted on an FR4 board with specified copper pads. Derating is required above these temperatures, per the power derating curve in Figure 1 of the official datasheet.
Can the 1N4734E3/TR13 be used in lead-free soldering processes?
Yes, the 1N4734E3/TR13 is qualified for lead-free soldering: its "e3" suffix indicates RoHS-compliant matte-tin terminations, and it is rated for 260°C for 10 seconds-fully compatible with standard Pb-free reflow profiles. The device meets MIL-STD-750 Method 2026 for solderability, ensuring reliable wetting and joint integrity without Sn/Pb alloy dependency.
What does the "TR13" suffix indicate in 1N4734E3/TR13?
"TR13" denotes tape-and-reel packaging per EIA-296 standard, with 13-inch reels. This format enables automated pick-and-place insertion for through-hole assembly lines-even though the DO-41 package is axial-leaded. The "TR" suffix is additive to the base part number and does not alter electrical or thermal specifications of the 1N4734E3/TR13.
1N4734E3/TR13 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:
- ±10%
- 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)
1N4734E3/TR13 FAQ
1.How can I place an order for 1N4734E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4734E3/TR13 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 1N4734E3/TR13 reliable?
The price and inventory of 1N4734E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4734E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4734E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4734E3/TR13 transactions.
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4.How is shipping managed for 1N4734E3/TR13?
1N4734E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4734E3/TR13 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 1N4734E3/TR13?
For technical support, including 1N4734E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4734E3/TR13 requirements.
6.How does Aetrix verify that 1N4734E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4734E3/TR13 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 1N4734E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4734E3/TR13?
All 1N4734E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4734E3/TR13, 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 1N4734E3/TR13 part is unused and in its original packaging.
Return procedure for 1N4734E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4734E3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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SMAJ4744A-TP
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