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Microchip Technology 1N4734CPE3/TR12
- Part No.:
- 1N4734CPE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4734CPE3/TR12.pdf
- Description:
- DIODE ZENER 5.6V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,545
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Product details
Overview
1N4734CPE3/TR12 from Microsemi is a 5.6 V, ±2% 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 precise voltage regulation in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N4734CPE3/TR12 datasheet, 1N4734CPE3/TR12 pinout, 1N4734CPE3/TR12 application, or 1N4734CPE3/TR12 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 tape-and-reel packaging (TR12).
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable output voltage under varying load and line conditions. Its 5.6 V nominal Zener voltage exhibits low temperature coefficient near zero crossing, enabling stable reference performance across –65°C to +150°C operating range.
The device uses void-free thermosetting epoxy encapsulation (UL94V-0), with cathode indicated by band and axial-leaded DO-41 mechanical form factor. It supports steady-state 1.0 W dissipation at lead temperature <105°C or ambient <45°C on FR4 board with defined copper pad geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 5.6 V ±2% - tight tolerance enables precision voltage reference without external trimming |
| Power Dissipation | 1.0 W at TL < 105°C - defines maximum continuous thermal load with 3/8" lead length |
| Test Current (IZT) | 45 mA - operating point where Vz and ZZT are specified; sets minimum regulation current |
| Dynamic Impedance (ZZT) | 5 Ω @ IZT - low AC impedance ensures minimal output voltage variation under dynamic load changes |
| Max Regulator Current (IZM) | 162 mA at TA = 50°C - peak DC current before thermal runaway; derates linearly above 50°C |
| Reverse Leakage (IR) | 10 μA @ VR = 2 V - confirms sharp knee and low off-state conduction below regulation threshold |
| Surge Current (ISM) | 810 mA - withstands short-duration transients per ½-sine 1/120 s pulse, critical for clamp reliability |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode band marking; body diameter 2.0–2.7 mm, overall length 4.5–5.5 mm, lead diameter 0.4–0.6 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in regulation circuit; reverse-biased during operation |
| Cathode | Zener breakdown terminal / regulation output node | Banded end; connected to higher-potential side; maintains stable 5.6 V relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Reduces need for post-assembly calibration in precision reference designs |
| RoHS-compliant matte-tin plating (e3 suffix) | Enables lead-free reflow soldering per JEDEC J-STD-020B Level 1 moisture sensitivity |
| Tape-and-reel packaging (TR12 suffix) | Supports automated SMT placement despite axial-leaded form factor via carrier tape |
| 45 °C/W junction-to-lead thermal resistance | Enables higher power density than glass-body equivalents (e.g., 1N4734A-G) |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for handling precautions in standard assembly environments |
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: Precision voltage reference element providing stable 5.6 V setpoint. Use Value: ±2% tolerance ensures output accuracy within 0.112 V, reducing system-level calibration burden. | Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes on sensor interface lines. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting excess energy to ground when voltage exceeds 5.6 V. Use Value: 810 mA surge current rating handles repetitive 100 ns–1 µs transients without degradation. |
| Voltage Monitor Circuit | Signal Level Shifter |
Use Scenario: Detecting brown-out conditions in battery-powered instrumentation using comparator input biasing. IC Role / Device Role / Timing Role: Stable reference source for comparator threshold setting at 5.6 V. Use Value: Low 5 Ω dynamic impedance minimizes threshold drift under varying supply current draw. | Use Scenario: Translating 3.3 V logic signals to 5 V domain in mixed-voltage digital systems. IC Role / Device Role / Timing Role: Bidirectional level-shifting element leveraging forward conduction (1.2 V) and reverse breakdown (5.6 V). Use Value: Forward voltage ≤1.2 V at 200 mA enables low-loss high-side translation without active circuitry. |
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 nominal, but ±5% tolerance (A suffix) and no RoHS compliance (non-e3) | Acceptable where tighter tolerance not required; unsuitable for lead-free manufacturing | Select 1N4734CPE3/TR12 when ±2% accuracy and RoHS compliance are mandatory |
| BZX55C5V6 | 5.6 V ±5%, DO-35 package, 500 mW power rating, higher ZZT (10 Ω) | Limited to lower-power clamping; incompatible pin spacing and thermal performance | Choose 1N4734CPE3/TR12 for 1 W operation, DO-41 mounting compatibility, and superior thermal resistance |
Compared with 1N4734A and BZX55C5V6, the 1N4734CPE3/TR12 delivers tighter voltage control, higher surge resilience, and lead-free process support-making it optimal for industrial-grade power references requiring long-term stability and regulatory compliance.
Availability
1N4734CPE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and medical sensor interfaces requiring stable component supply with full traceability and lifecycle management.
Supply support for 1N4734CPE3/TR12 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 designed specifically for robust, cost-effective voltage regulation in harsh-environment power systems where thermal stability and long-term parametric consistency are critical.
FAQ
What is the Zener voltage tolerance of the 1N4734CPE3/TR12?
The 1N4734CPE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This tight tolerance ensures the actual breakdown voltage remains between 5.488 V and 5.712 V at 45 mA test current and 25°C lead temperature, supporting precision reference applications without external trimming.
Does the 1N4734CPE3/TR12 meet RoHS requirements?
Yes, the 1N4734CPE3/TR12 complies with RoHS directives, confirmed by the "e3" suffix indicating matte-tin plating and lead-free construction. It supports reflow soldering per JEDEC J-STD-020B Level 1 moisture sensitivity classification with no dry-pack requirement.
What is the maximum continuous power dissipation for the 1N4734CPE3/TR12?
The 1N4734CPE3/TR12 is rated for 1.0 W steady-state power dissipation at lead temperature (TL) below 105°C with 3/8" (10 mm) lead length from the body. Derating is required above 50°C ambient when mounted on FR4, reaching zero watt capability at 150°C ambient.
How is polarity marked on the 1N4734CPE3/TR12?
The 1N4734CPE3/TR12 uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a higher potential than the anode to achieve Zener regulation. Forward voltage is guaranteed ≤1.2 V at 200 mA, confirming standard diode behavior in forward bias.
What does the "TR12" suffix signify in 1N4734CPE3/TR12?
The "TR12" suffix indicates tape-and-reel packaging per EIA-296 standard, with 12,000 units per reel. This format enables automated pick-and-place assembly while maintaining the DO-41 axial-leaded mechanical configuration required for through-hole or carrier-tape compatible insertion.
1N4734CPE3/TR12 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)
1N4734CPE3/TR12 FAQ
1.How can I place an order for 1N4734CPE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4734CPE3/TR12 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 1N4734CPE3/TR12 reliable?
The price and inventory of 1N4734CPE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4734CPE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4734CPE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4734CPE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4734CPE3/TR12?
1N4734CPE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4734CPE3/TR12 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 1N4734CPE3/TR12?
For technical support, including 1N4734CPE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4734CPE3/TR12 requirements.
6.How does Aetrix verify that 1N4734CPE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4734CPE3/TR12 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 1N4734CPE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4734CPE3/TR12?
All 1N4734CPE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4734CPE3/TR12, 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 1N4734CPE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4734CPE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4734CPE3/TR12 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
Diodes Incorporated
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Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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