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Microchip Technology 1N4734CE3/TR13
- Part No.:
- 1N4734CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4734CE3/TR13.pdf
- Description:
- DIODE ZENER 5.6V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,343
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Product details
Overview
1N4734CE3/TR13 from Microsemi is a 5.6 V, ±2% tolerance, 1 W axial-lead silicon Zener diode in DO-41 package, rated for 45 mA test current and 162 Ω dynamic impedance at IZT, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4734CE3/TR13 datasheet, 1N4734CE3/TR13 pinout, 1N4734CE3/TR13 application, or 1N4734CE3/TR13 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (45 °C/W junction-to-lead), surge current rating (810 mA), RoHS-compliant matte-tin plating, and JEDEC-registered plastic construction with e3 suffix.
Technical Context
The 1N4734CE3/TR13 operates as a reverse-biased voltage reference diode with sharp breakdown knee, specified at 45 mA test current and 5.6 V nominal Zener voltage. Its ±2% tolerance (C suffix) and 162 Ω dynamic impedance at IZT support stable regulation across load and temperature variations.
Designed for through-hole mounting on FR4 PCBs, it delivers 1.0 W steady-state power dissipation at lead temperature <105 °C (3/8″ from body) or ambient <45 °C, with thermal resistance of 105 °C/W junction-to-ambient under defined copper pad conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V ±2% - precise reference for feedback loops and clamp thresholds |
| Power Dissipation | 1.0 W at TL < 105 °C - defines maximum continuous thermal load in lead-mounted configuration |
| Test Current (IZT) | 45 mA - operating point where VZ and ZZT are guaranteed per JEDEC spec |
| Dynamic Impedance (ZZT) | 5 Ω max at IZT - low AC resistance ensures minimal output voltage variation under ripple current |
| Max Reverse Current (IR) | 10 μA at 4.2 V - confirms tight leakage control below knee voltage for low-power standby regulation |
| Surge Current (ISM) | 810 mA - withstands transient overloads such as ESD or line surges without degradation |
| Operating Temperature | –65 °C to +150 °C - supports industrial and automotive under-hood environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode band marking; terminals are non-polarized leads - cathode identified by single black band, operated with banded end positive relative to anode for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node; reverse bias applied between cathode and anode to enable regulation |
| Cathode | Zener breakdown terminal / regulation output node | Banded end; connected to regulated voltage rail; must be held at higher potential than anode during operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop accuracy in adjustable regulators and precision references without trimming |
| RoHS-compliant matte-tin plating (e3 suffix) | Ensures solderability and long-term reliability under lead-free reflow profiles up to 260 °C for 10 s |
| Moisture sensitivity Level 1 (J-STD-020B) | Eliminates dry-pack requirement and bake-out prior to assembly, reducing manufacturing overhead |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Permits handling in standard workstations without special static control beyond basic grounding |
| Plastic encapsulation (P suffix) | Provides 30% lower thermal resistance vs. glass-body equivalents, improving power derating margin |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or op-amp-based shunt regulators. IC Role / Device Role / Timing Role: Provides fixed reference voltage to error amplifier input for output voltage setpoint control. Use Value: ±2% tolerance ensures output accuracy within ±1% over line/load/temperature in 5 V systems using 1N4734CE3/TR13 as reference. | Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes on sensor inputs. IC Role / Device Role / Timing Role: Shunts excess energy above 5.6 V to ground before reaching sensitive logic inputs. Use Value: 810 mA surge rating absorbs 100 ns–1 μs transients common in industrial sensor interfaces without failure. |
| DC-DC Converter Feedback | Calibration Reference |
Use Scenario: Setting output voltage in isolated flyback converters via optocoupler-coupled feedback network. IC Role / Device Role / Timing Role: Serves as primary-side Zener reference to bias optocoupler LED in secondary-sense topology. Use Value: Low 5 Ω ZZT minimizes regulation error induced by optocoupler CTR variation and LED forward drop drift. | Use Scenario: Providing traceable voltage standard in handheld multimeter internal ADC calibration circuitry. IC Role / Device Role / Timing Role: Acts as stable, low-drift DC reference for self-calibration routines during power-up. Use Value: –65 °C to +150 °C operating range allows calibration stability across instrument storage and field-use temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Same 5.6 V, ±5% tolerance (A suffix), non-RoHS tin-lead plating | Acceptable where Pb-free compliance is not required and looser tolerance is acceptable | Select 1N4734A only if legacy Pb-based assembly is used and ±5% regulation error is within system budget |
| BZX55C5V6 | 5.6 V ±5%, DO-35 package, 500 mW rating, higher ZZT (10 Ω) | Lower power capability limits use to sub-300 mA regulation loads; smaller footprint but reduced thermal margin | Choose BZX55C5V6 only for space-constrained low-power designs where 500 mW suffices and DO-35 fits layout |
Compared with 1N4734A and BZX55C5V6, the 1N4734CE3/TR13 offers superior tolerance (±2% vs. ±5%), full 1 W power handling, and RoHS compliance-making it optimal for new industrial designs requiring precision, thermal robustness, and environmental compliance.
Availability
1N4734CE3/TR13 is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and DC-DC converter feedback applications requiring stable component supply, consistent Zener voltage tolerance, and RoHS-compliant manufacturing.
Supply support for 1N4734CE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N47xx series was developed to deliver JEDEC-standardized, high-stability Zener regulation in cost-effective plastic packages for general-purpose power management and protection functions.
FAQ
What is the Zener voltage tolerance of the 1N4734CE3/TR13?
The 1N4734CE3/TR13 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in its part number. This tolerance applies to the nominal 5.6 V Zener voltage at 45 mA test current and 25 °C lead temperature. The tighter tolerance enables higher accuracy in voltage reference and feedback applications compared to standard ±5% variants like the 1N4734A.
Is the 1N4734CE3/TR13 RoHS compliant?
Yes, the 1N4734CE3/TR13 is RoHS compliant, as confirmed by the "e3" suffix in its part number. It features annealed matte-tin plating on its axial leads and meets exemption requirements for lead-free assembly processes, including compatibility with peak reflow temperatures up to 260 °C for 10 seconds.
What package type does the 1N4734CE3/TR13 use?
The 1N4734CE3/TR13 uses the DO-41 (JEDEC DO-204AL) plastic axial-lead package. It measures approximately 2.7 mm diameter × 5.2 mm length, with tinned leads extending 25 mm from the body. The cathode is marked by a single black band, and polarity must be observed during PCB placement for proper Zener operation.
What is the maximum surge current rating for the 1N4734CE3/TR13?
The 1N4734CE3/TR13 has a maximum non-repetitive surge current (ISM) rating of 810 mA, measured using a ½ sine-wave pulse of 1/120 second duration at 25 °C ambient. This rating supports transient suppression in power rails and interface lines without permanent degradation when used within specified thermal limits.
How does the thermal resistance of the 1N4734CE3/TR13 compare to glass-body Zeners?
The 1N4734CE3/TR13 exhibits 45 °C/W junction-to-lead thermal resistance at 3/8″ (10 mm) lead length - approximately 30% lower than equivalent glass-body (G-suffix) versions. This improved thermal performance allows higher sustained power dissipation in lead-mounted configurations and reduces risk of thermal runaway in compact layouts.
1N4734CE3/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:
- ±2%
- 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)
1N4734CE3/TR13 FAQ
1.How can I place an order for 1N4734CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4734CE3/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 1N4734CE3/TR13 reliable?
The price and inventory of 1N4734CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4734CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4734CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4734CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4734CE3/TR13?
1N4734CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4734CE3/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 1N4734CE3/TR13?
For technical support, including 1N4734CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4734CE3/TR13 requirements.
6.How does Aetrix verify that 1N4734CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4734CE3/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 1N4734CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4734CE3/TR13?
All 1N4734CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4734CE3/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 1N4734CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N4734CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4734CE3/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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