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Microchip Technology 1N4734PE3/TR12
- Part No.:
- 1N4734PE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4734PE3/TR12.pdf
- Description:
- DIODE ZENER 5.6V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,659
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Product details
Overview
1N4734PE3/TR12 from Microsemi is a 5.6 V, ±5% tolerance, 1 W axial-lead silicon Zener diode in DO-41 plastic package, rated for 45 °C/W junction-to-lead thermal resistance and 162 mA maximum regulator current at 50 °C ambient, used for precision voltage reference and overvoltage protection in DC power supplies.
For engineers reviewing the 1N4734PE3/TR12 datasheet, 1N4734PE3/TR12 pinout, 1N4734PE3/TR12 application, or 1N4734PE3/TR12 equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance (5 Ω @ 45 mA), reverse leakage (<10 μA @ 4.2 V), surge current rating (810 mA), and RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
Technical Context
This device operates in reverse breakdown to maintain stable output voltage across wide current (1–162 mA) and temperature (−65 °C to +150 °C) ranges. Its 5.6 V nominal Zener voltage exhibits low knee impedance (400 Ω @ 0.25 mA) and tight regulation due to sharp breakdown characteristics verified per JEDEC 1N4734A registration.
The DO-41 plastic package delivers lower thermal resistance than glass-body variants (G suffix), enabling higher power handling at lead temperature <105 °C. Polarity is marked by cathode band; operation requires cathode-positive bias relative to anode for regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V ±5% at 45 mA test current - defines regulated output level with 0.28 V absolute tolerance. |
| Power Dissipation | 1.0 W at TL < 105 °C (3/8″ lead length) - sets maximum continuous DC power under standard mounting. |
| Dynamic Impedance | 5 Ω @ IZT = 45 mA - ensures minimal output voltage variation under load current changes. |
| Reverse Leakage | <10 μA @ VR = 4.2 V - guarantees low standby power loss below regulation threshold. |
| Max Regulator Current | 162 mA at TA = 50 °C - determines maximum sustainable Zener current before thermal derating applies. |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design using lead temperature as primary thermal node. |
| Forward Voltage | ≤1.2 V @ 200 mA - supports use as clamp or rectifier in forward conduction mode. |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by color 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 | Reference ground node in shunt regulator configuration | Connected to system ground or lowest potential point; carries full load current when regulating. |
| Cathode | Regulated output node in shunt regulator configuration | Banded end; held at precise 5.6 V above anode; must be biased positive relative to anode for Zener operation. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N4734A specification | Ensures cross-manufacturer compatibility and standardized electrical behavior per industry baseline. |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating, eliminating lead-based solder concerns. |
| Moisture sensitivity Level 1 | Per IPC/JEDEC J-STD-020B - no dry pack or baking required prior to assembly. |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - withstands human-body-model discharges without parameter shift. |
| Plastic P-suffix construction | Delivers 45 °C/W junction-to-lead thermal resistance - 38% lower than equivalent glass-body (G) variants. |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing unregulated 9 V DC rail for analog sensor biasing in industrial control modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 5.6 V reference to op-amp feedback network. Use Value: Maintains ±0.28 V regulation accuracy across −40 °C to +85 °C ambient, reducing sensor offset drift. | Use Scenario: Clamping transient spikes on 5 V microcontroller I/O lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Reverse-biased transient voltage suppressor diverting surge energy to ground. Use Value: Limits voltage to ≤5.9 V during 810 mA 8.3 ms surges, preventing MCU latch-up or damage. |
| Programmable Reference Source | Current-Limited Bias Generator |
Use Scenario: Generating stable 5.6 V reference for DAC output scaling in programmable logic controller analog outputs. IC Role / Device Role / Timing Role: Precision voltage source feeding resistor-divider network to set DAC full-scale range. Use Value: Delivers 5.6 V ±5% with 5 Ω dynamic impedance, minimizing gain error contribution to <0.3% FS. | Use Scenario: Providing temperature-stable bias current to a discrete transistor amplifier stage in telecom line drivers. IC Role / Device Role / Timing Role: Constant-current source formed with series resistor, leveraging Zener's sharp knee characteristic. Use Value: Supplies 10 mA bias with <±2% variation from −25 °C to +70 °C, improving amplifier gain stability. |
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 plating only; same electrical specs and DO-41 package. | Not suitable for lead-free assembly processes requiring RoHS compliance. | Select 1N4734PE3/TR12 when RoHS compliance and matte-tin solderability are mandatory. |
| MMSZ5232B-TP | Surface-mount SOD-123 package; 5.6 V ±5%; 500 mW rating; 17 Ω ZZT @ 20 mA. | Lower power and higher dynamic impedance limit use in high-current or precision reference roles. | Choose MMSZ5232B-TP only for space-constrained PCBs where 1 W dissipation is not required. |
Compared with 1N4734A and MMSZ5232B-TP, the 1N4734PE3/TR12 uniquely combines 1 W power handling, 5 Ω dynamic impedance, RoHS-compliant matte-tin plating, and JEDEC-standard DO-41 mechanical form factor-making it optimal for through-hole industrial power regulation where reliability and thermal robustness are critical.
Availability
1N4734PE3/TR12 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and programmable reference sources requiring stable component supply and long-term obsolescence management.
Supply support for 1N4734PE3/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial applications.
The 1N47xxAP Zener series targets cost-sensitive yet thermally demanding voltage regulation tasks, emphasizing JEDEC standardization, moisture resilience, and extended temperature operation from −65 °C to +150 °C.
FAQ
What is the Zener voltage tolerance of the 1N4734PE3/TR12?
The 1N4734PE3/TR12 has a nominal Zener voltage of 5.6 V with a ±5% tolerance, meaning its actual regulation voltage falls between 5.32 V and 5.88 V when tested at 45 mA and 25 °C lead temperature. This tolerance is defined by the "A" suffix in the JEDEC 1N4734A base designation and is maintained across the full operating temperature range of −65 °C to +150 °C.
Does the 1N4734PE3/TR12 support lead-free soldering processes?
Yes, the 1N4734PE3/TR12 features RoHS-compliant annealed matte-tin plating on its axial leads, qualified per MIL-STD-750 Method 2026. It withstands solder reflow profiles up to 260 °C for 10 seconds, making it fully compatible with lead-free assembly processes without risk of dewetting or intermetallic degradation.
What is the maximum steady-state current the 1N4734PE3/TR12 can regulate continuously?
The 1N4734PE3/TR12 supports a maximum regulator current of 162 mA at 50 °C ambient temperature when mounted on FR4 with specified copper pad geometry. At higher ambient temperatures, current must be derated per the published power curve-e.g., at 75 °C ambient, max current drops to approximately 120 mA to maintain 1 W dissipation within thermal limits.
How does the DO-41 plastic package of the 1N4734PE3/TR12 compare thermally to glass-body Zeners?
The DO-41 plastic package of the 1N4734PE3/TR12 achieves 45 °C/W junction-to-lead thermal resistance-significantly lower than the ~72 °C/W typical of glass-body (G-suffix) equivalents. This 38% improvement allows higher power dissipation at the same lead temperature or cooler operation under identical load conditions, enhancing long-term reliability in thermally stressed environments.
Can the 1N4734PE3/TR12 be used in surge protection applications?
Yes, the 1N4734PE3/TR12 is rated for 810 mA non-repetitive surge current (ISM) using a 8.3 ms half-sine waveform at 25 °C. This makes it suitable for clamping short-duration transients in power rails and signal lines, provided external series impedance limits peak power dissipation to within safe SOA limits and repeated surges are spaced to allow thermal recovery.
1N4734PE3/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:
- ±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)
1N4734PE3/TR12 FAQ
1.How can I place an order for 1N4734PE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4734PE3/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 1N4734PE3/TR12 reliable?
The price and inventory of 1N4734PE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4734PE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4734PE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4734PE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4734PE3/TR12?
1N4734PE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4734PE3/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 1N4734PE3/TR12?
For technical support, including 1N4734PE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4734PE3/TR12 requirements.
6.How does Aetrix verify that 1N4734PE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4734PE3/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 1N4734PE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4734PE3/TR12?
All 1N4734PE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4734PE3/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 1N4734PE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4734PE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4734PE3/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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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
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
Diodes Incorporated
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