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Microchip Technology 1N4736APE3/TR12
- Part No.:
- 1N4736APE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4736APE3/TR12.pdf
- Description:
- DIODE ZENER 6.8V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,604
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Product details
Overview
1N4736APE3/TR12 from Microsemi is a 1.0 W, 6.8 V ±5% silicon Zener diode in DO-41 plastic package, rated for 37 mA test current, 3.5 Ω dynamic impedance at IZT, and 700 μA reverse leakage at 4 V, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4736APE3/TR12 datasheet, 1N4736APE3/TR12 pinout, 1N4736APE3/TR12 application, or 1N4736APE3/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (45 °C/W junction-to-lead), surge current rating (660 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging per EIA-296.
Technical Context
This axial-lead Zener operates in reverse breakdown to maintain stable 6.8 V output across 10 mA to 660 mA regulation current range, with temperature coefficient near zero (±2 mV/°C typical) due to its mid-voltage position in the 1N47xxA series. Its DO-41 package enables through-hole mounting with 0.7 g mass and UL94V-0 epoxy body.
Designed for operation from –65 °C to +150 °C, it delivers 1.0 W steady-state dissipation at lead temperature <105 °C (3/8″ from body) or ambient <45 °C on FR4 board, with forward voltage ≤1.2 V at 200 mA and solder tolerance up to 260 °C for 10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V ±5% at 37 mA - defines nominal regulation point with tight tolerance suitable for reference circuits |
| Power Dissipation | 1.0 W at TL < 105 °C - sets maximum continuous thermal load under lead-heatsink conditions |
| Dynamic Impedance | 3.5 Ω at IZT = 37 mA - indicates low AC impedance for stable regulation under varying load |
| Reverse Leakage | 700 μA at VR = 4 V - confirms low off-state current for minimal quiescent power loss |
| Surge Current (ISM) | 660 mA (½-sine, 1/120 s) - supports transient overvoltage clamping without failure |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design using lead as primary heat path |
| Operating Temperature | –65 °C to +150 °C - ensures reliability in industrial and automotive under-hood environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by band; terminals are anode and cathode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener regulation terminal | Connected to higher potential during reverse-bias operation; polarity must be observed to enable breakdown conduction |
| Anode (unbanded end) | Reference return node | Serves as circuit ground or common return path; reverse current flows from cathode to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant "e3" suffix | Matte-tin plating meets lead-free soldering requirements without compromising solderability or reliability |
| Moisture sensitivity Level 1 | No dry pack required per IPC/JEDEC J-STD-020B - simplifies handling and eliminates bake-out prior to assembly |
| Low thermal resistance (45 °C/W) | Enables higher power operation with shorter leads or heatsinking via PCB copper pads |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - reduces risk of damage during manual handling or board assembly |
| Tape-and-reel packaging (TR12) | EIA-296 compliant 12 mm tape width - supports automated pick-and-place for high-volume manufacturing |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifiers. IC Role / Device Role / Timing Role: Provides precise 6.8 V reference to comparator or op-amp input. Use Value: Maintains ±5% output accuracy across temperature and load variations due to low dynamic impedance and zero-crossing tempco. | Use Scenario: Clamping transient spikes on DC rails in motor drives or industrial controllers. IC Role / Device Role / Timing Role: Acts as shunt protector by conducting excess energy above 6.8 V to ground. Use Value: Absorbs 660 mA surge current without degradation, enabling robust protection without external crowbar circuitry. |
| Voltage Monitor Circuit | Signal Level Translation |
Use Scenario: Detecting undervoltage or overvoltage conditions in battery-powered instrumentation. IC Role / Device Role / Timing Role: Serves as threshold detector in conjunction with comparator or microcontroller ADC input. Use Value: Delivers repeatable 6.8 V trigger point with <700 μA leakage at 4 V, minimizing false trips during brownout events. | Use Scenario: Shifting logic-level signals between 3.3 V and 5 V domains in mixed-voltage systems. IC Role / Device Role / Timing Role: Functions as bidirectional level translator using Zener clamp configuration. Use Value: Enables clean signal edge preservation with 3.5 Ω dynamic impedance, reducing distortion in high-speed digital interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4736A (non-e3, non-TR) | Same electrical specs but Sn/Pb plating and bulk packaging; no RoHS compliance or tape-and-reel support | Restricted to legacy or non-RoHS production; unsuitable for lead-free reflow lines | Select when cost-sensitive prototyping or non-compliant environments require standard tin-lead finish |
| BZX55C6V8 (Vishay) | Same 6.8 V ±5%, 500 mW rating, DO-35 package; higher ZZT (10 Ω) and lower IZM (190 mA) | Limited to lower-power regulation; insufficient for 1W continuous dissipation or 660 mA surge | Choose only for space-constrained designs where 500 mW rating suffices and DO-35 footprint is preferred |
Compared with 1N4736A and BZX55C6V8, the 1N4736APE3/TR12 offers full 1 W capability, RoHS-compliant matte-tin plating, EIA-296 tape-and-reel delivery, and superior surge handling-making it optimal for industrial power supplies requiring regulatory compliance and production scalability.
Availability
1N4736APE3/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and voltage monitor circuits requiring stable component supply, RoHS compliance, and automated assembly support.
Supply support for 1N4736APE3/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 engineered for ruggedized voltage regulation in mission-critical power systems, emphasizing thermal stability, ESD immunity, and moisture resilience in harsh operating environments.
FAQ
What is the Zener voltage tolerance of the 1N4736APE3/TR12?
The 1N4736APE3/TR12 has a Zener voltage tolerance of ±5%, specified at 37 mA test current and 25 °C lead temperature. This tolerance is confirmed by the "A" suffix in the part number per JEDEC registration and applies across the full operating temperature range of –65 °C to +150 °C.
Does the 1N4736APE3/TR12 support lead-free soldering processes?
Yes, the 1N4736APE3/TR12 features RoHS-compliant annealed matte-tin plating ("e3" suffix) and is qualified for lead-free reflow up to 260 °C for 10 seconds. Its UL94V-0 epoxy body and thermal performance remain unaffected under standard Pb-free process profiles.
What is the maximum surge current rating for the 1N4736APE3/TR12?
The 1N4736APE3/TR12 is rated for a maximum surge current (ISM) of 660 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating enables reliable transient suppression in DC power rail protection applications.
How does the thermal resistance of the 1N4736APE3/TR12 affect PCB layout?
The 1N4736APE3/TR12 has a junction-to-lead thermal resistance of 45 °C/W at 3/8″ lead length, meaning PCB layout should maximize copper area on the cathode/anode traces and avoid excessive trace length. For ambient-limited operation, use ≥4 mm² copper pads and 1 mm track width per Microsemi's thermal test condition.
Is the 1N4736APE3/TR12 suitable for automotive under-hood applications?
Yes, the 1N4736APE3/TR12 is rated for –65 °C to +150 °C operating and storage temperature, meets MIL-STD-750 ESD testing, and carries moisture sensitivity Level 1-making it suitable for under-hood automotive modules where thermal cycling and humidity exposure occur.
1N4736APE3/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):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 4 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)
1N4736APE3/TR12 FAQ
1.How can I place an order for 1N4736APE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4736APE3/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 1N4736APE3/TR12 reliable?
The price and inventory of 1N4736APE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4736APE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4736APE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4736APE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4736APE3/TR12?
1N4736APE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4736APE3/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 1N4736APE3/TR12?
For technical support, including 1N4736APE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4736APE3/TR12 requirements.
6.How does Aetrix verify that 1N4736APE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4736APE3/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 1N4736APE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4736APE3/TR12?
All 1N4736APE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4736APE3/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 1N4736APE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4736APE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4736APE3/TR12 Tags
-
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
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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