My Inquiry
My Account
Microchip Technology 1N4744CE3/TR13
- Part No.:
- 1N4744CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4744CE3/TR13.pdf
- Description:
- DIODE ZENER 15V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,208
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4744CE3/TR13 from Microsemi is a 15 V, ±2% tolerance, 1 W axial-lead silicon Zener diode in DO-41 package, rated for 17 mA test current, 14 Ω dynamic impedance at IZT, and 5 μA reverse leakage at 11.4 V, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4744CE3/TR13 datasheet, 1N4744CE3/TR13 pinout, 1N4744CE3/TR13 application, or 1N4744CE3/TR13 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (45 °C/W junction-to-lead), surge current rating (304 mA), RoHS-compliant matte-tin plating, and JEDEC-standard DO-41 mechanical compatibility.
Technical Context
This device operates in reverse breakdown to maintain stable 15 V output across 1–304 mA regulation current range, with sharp knee characteristics verified by dual-point Zener impedance measurement per MicroNote 202. Its 14 Ω dynamic impedance at 17 mA ensures low AC ripple rejection in feedback references.
Designed for ambient operation from –65 °C to +150 °C, it delivers 1 W dissipation at 25 °C lead temperature (TL), derating linearly to zero at 105 °C TL or 45 °C board ambient (TA) on FR4 with specified copper layout-enabling reliable use in industrial power rails and automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V ±2% at 17 mA - enables tight-set reference points in analog feedback loops |
| Power Dissipation | 1.0 W at TL < 105 °C - supports continuous regulation without forced cooling in compact layouts |
| Dynamic Impedance (ZZT) | 14 Ω at IZT = 17 mA - minimizes output voltage variation under load transients |
| Reverse Leakage Current | 5 μA max at VR = 11.4 V - ensures low quiescent error in high-impedance bias networks |
| Surge Current (ISM) | 304 mA (½-sine, 1/120 s) - withstands brief overvoltage events without degradation |
| Thermal Resistance | 45 °C/W junction-to-lead (3/8″ lead length) - allows accurate thermal modeling in leaded PCB designs |
| Forward Voltage | 1.2 V max at 200 mA - defines conduction behavior during fault conditions or polarity reversal |
Pinout & Package
DO-41 (JEDEC DO-204AL) plastic axial-lead package with cathode indicated by colored 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 | Non-banded end | Connected to lower-potential node; forward conduction path when biased positive relative to cathode |
| Cathode | Banded end | Connected to higher-potential node; Zener regulation occurs when cathode is ≥15 V above anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Reduces calibration drift in precision voltage references versus standard ±5% (A) parts |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating, no lead or hazardous substances |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for SMT assembly lines |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands handling without special grounding protocols, lowering production defect rates |
| Plastic P-suffix construction | Provides 45 °C/W junction-to-lead thermal resistance-superior to glass-body G-suffix alternatives |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or discrete op-amp-based regulators. IC Role / Device Role / Timing Role: Provides fixed 15 V reference point for error amplifier comparison. Use Value: ±2% tolerance ensures output accuracy within ±0.3 V over temperature and life, reducing need for post-production trimming. | Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 15 V. IC Role / Device Role / Timing Role: Shunts excess energy to ground when input exceeds 15 V, clamping voltage before damage occurs. Use Value: 304 mA surge rating handles repetitive 1/120 s transients without parameter shift or failure. |
| Signal Level Translation | Current Source Bias |
Use Scenario: Generating stable 15 V bias for analog sensor excitation in industrial transmitters. IC Role / Device Role / Timing Role: Acts as two-terminal voltage source driving constant-current circuitry. Use Value: Low 14 Ω dynamic impedance maintains <0.2 V deviation across 1–20 mA load variations. | Use Scenario: Setting gate bias for MOSFET-based constant-current sinks in LED drivers. IC Role / Device Role / Timing Role: Establishes precise 15 V reference for current-setting resistor network. Use Value: Tight ±2% tolerance ensures consistent LED current across production batches without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | Same 15 V nominal, but ±5% tolerance (A suffix) and non-RoHS tin-lead plating | Acceptable where cost sensitivity outweighs precision or environmental compliance requirements | Select only if legacy Pb-based assembly is mandated and ±5% regulation error is acceptable |
| BZX85C15 | 15 V ±5%, 1.3 W rating, DO-41 package, but higher ZZT (20 Ω) and no MIL screening option | Used in consumer-grade power supplies where tighter tolerance and military screening are unnecessary | Choose when higher power margin is needed but ±2% stability and RoHS are not required |
Compared with 1N4744A and BZX85C15, the 1N4744CE3/TR13 offers superior voltage accuracy and environmental compliance at identical DO-41 footprint, making it optimal for industrial and automotive designs requiring long-term calibration stability and regulatory adherence.
Availability
1N4744CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and medical instrumentation requiring stable component supply with full traceability and lifecycle management.
Supply support for 1N4744CE3/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 timing solutions for aerospace, defense, and industrial markets.
The 1N47xx series was developed to deliver JEDEC-standardized, high-stability Zener regulation in ruggedized plastic packages for mission-critical power conditioning and protection functions.
FAQ
What is the Zener voltage tolerance of the 1N4744CE3/TR13?
The 1N4744CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its regulated voltage remains within 14.7 V to 15.3 V at 25 °C when tested at 17 mA, enabling higher accuracy than standard ±5% (A-suffix) variants like the 1N4744A. This tolerance is confirmed in the Electrical Characteristics table on page 1 of the Microsemi datasheet.
Does the 1N4744CE3/TR13 meet RoHS requirements?
Yes, the 1N4744CE3/TR13 meets RoHS Directive 2011/65/EU, as indicated by the "e3" suffix. It uses RoHS-compliant annealed matte-tin plating on its axial leads and void-free thermosetting epoxy encapsulation compliant with UL94V-0. The device requires no dry pack and is moisture sensitivity Level 1 per IPC/JEDEC J-STD-020B.
What is the maximum surge current rating for the 1N4744CE3/TR13?
The 1N4744CE3/TR13 has a maximum surge current (ISM) rating of 304 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating allows the device to absorb short-duration overvoltage transients without degradation, supporting robust clamp performance in power supply and interface protection circuits.
How does the thermal resistance of the 1N4744CE3/TR13 affect PCB layout?
The 1N4744CE3/TR13 has a junction-to-lead thermal resistance of 45 °C/W at 3/8″ (10 mm) lead length from the body. For reliable 1 W operation, PCB layout must ensure adequate copper area (4 mm² pads, 1 mm track width, 25 mm length) to achieve 105 °C/W junction-to-ambient resistance on FR4-otherwise, power derating is required to prevent thermal runaway.
Can the 1N4744CE3/TR13 replace the 1N4744A in existing designs?
The 1N4744CE3/TR13 can replace the 1N4744A mechanically and electrically, as both share identical DO-41 packaging, 15 V nominal Zener voltage, and 1 W rating. However, the 1N4744CE3/TR13 adds ±2% tolerance and RoHS compliance-beneficial upgrades unless legacy tin-lead assembly or looser tolerance is specifically required.
1N4744CE3/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):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 14 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 11.4 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)
1N4744CE3/TR13 FAQ
1.How can I place an order for 1N4744CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4744CE3/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 1N4744CE3/TR13 reliable?
The price and inventory of 1N4744CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4744CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4744CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4744CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4744CE3/TR13?
1N4744CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4744CE3/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 1N4744CE3/TR13?
For technical support, including 1N4744CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4744CE3/TR13 requirements.
6.How does Aetrix verify that 1N4744CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4744CE3/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 1N4744CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4744CE3/TR13?
All 1N4744CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4744CE3/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 1N4744CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N4744CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4744CE3/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
