My Inquiry
My Account
Microchip Technology 1N4756CE3/TR13
- Part No.:
- 1N4756CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4756CE3/TR13.pdf
- Description:
- DIODE ZENER 47V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,409
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4756CE3/TR13 from Microsemi is a 1.0 W, 47 V ±2% tolerance silicon Zener diode in DO-41 plastic package, rated for 5.5 mA test current, 80 Ω dynamic impedance at IZT, and 19 Ω knee impedance at 0.25 mA, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4756CE3/TR13 datasheet, 1N4756CE3/TR13 pinout, 1N4756CE3/TR13 application, or 1N4756CE3/TR13 equivalent, key selection factors include its ±2% voltage tolerance (C suffix), RoHS-compliant matte-tin plating (e3 suffix), tape-and-reel packaging (TR13 suffix), and thermal resistance of 45 °C/W junction-to-lead at 10 mm lead length.
Technical Context
This Zener operates in reverse breakdown to maintain stable 47 V output across a wide current range (0.25 mA to 150 mA), with sharp knee characteristics confirmed by dual-point Zener impedance measurement per MicroNote 202. Its 19 Ω ZZK at IZK = 0.25 mA ensures low-voltage drift near regulation threshold.
Designed for axial-lead mounting on FR4 PCBs, it delivers 1.0 W steady-state dissipation at TL < 105 °C (3/8″ lead length) or TA < 45 °C, with moisture sensitivity level 1 per J-STD-020B and no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±2% at 5.5 mA - enables precise reference generation with tight tolerance for feedback loops |
| Power Dissipation | 1.0 W at 25 °C - supports robust regulation in compact linear regulator stages |
| Dynamic Impedance (ZZT) | 80 Ω at 5.5 mA - limits output voltage variation under load transients |
| Knee Impedance (ZZK) | 19 Ω at 0.25 mA - ensures stable regulation onset at low bias currents |
| Max Reverse Current (IR) | 5 μA at 35.8 V - guarantees low leakage in standby or high-impedance sensing nodes |
| Thermal Resistance | 45 °C/W junction-to-lead - allows direct thermal path to PCB copper for reliable derating |
| Operating Temperature | −65 °C to +150 °C - suitable for industrial and automotive under-hood environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by color band; terminals are anode and cathode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased input terminal | Connected to lower-potential node; accepts reverse current during Zener conduction |
| Cathode | Regulated output terminal | Banded end; supplies stable 47 V reference when reverse-biased above breakdown |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Reduces calibration overhead in precision analog feedback networks |
| RoHS-compliant matte-tin plating (e3 suffix) | Ensures solderability and long-term reliability without lead-based finishes |
| Tape-and-reel packaging (TR13 suffix) | Enables automated SMT-compatible placement despite axial-leaded form factor |
| Moisture sensitivity Level 1 | Eliminates pre-bake requirement before assembly, reducing process cost |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Supports handling in standard production environments without special ESD controls |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Provides stable 47 V reference for optocoupler-based feedback in isolated DC-DC converters. IC Role / Device Role / Timing Role: Zener diode acting as primary voltage reference in secondary-side regulation loop. Use Value: ±2% tolerance minimizes output voltage drift across line/load/temperature, improving system accuracy. | Use Scenario: Supplies excitation voltage for bridge-based pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Precision shunt reference generating fixed bias for ratiometric sensor interfaces. Use Value: Low knee impedance (19 Ω) maintains regulation stability even at microamp-level quiescent currents. |
| Overvoltage Clamp Protection | Programmable Threshold Detector |
Use Scenario: Clamps transient surges on 48 V telecom distribution rails to protect downstream DC-DC controllers. IC Role / Device Role / Timing Role: Shunt protection device conducting excess energy during overvoltage events. Use Value: 1500 mA surge rating (½-sine, 1/120 s) absorbs repetitive line transients without degradation. | Use Scenario: Sets trip point for comparator-based battery undervoltage lockout in portable medical devices. IC Role / Device Role / Timing Role: Voltage threshold element defining logic transition boundary for monitoring circuitry. Use Value: Sharp Zener knee and low ZZK ensure consistent switching threshold across temperature and aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4756A | Same 47 V nominal, but ±5% tolerance (A suffix) and no RoHS or tape-and-reel designation | Acceptable where tighter tolerance not required; requires manual handling and Pb-based solder process | Select when cost sensitivity outweighs precision and environmental compliance needs |
| MMSZ47ET1G | Surface-mount SOD-123 package, same 47 V ±2%, 500 mW rating, 30 Ω ZZT | Used in space-constrained designs; lower power rating limits continuous clamp duty cycle | Select for high-density PCB layouts where axial leads are incompatible with layout constraints |
Compared with 1N4756A and MMSZ47ET1G, the 1N4756CE3/TR13 uniquely combines ±2% tolerance, 1.0 W power capability, RoHS compliance, and tape-and-reel packaging-making it optimal for automated, precision, and environmentally compliant industrial power designs.
Availability
1N4756CE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supply feedback, industrial sensor reference, overvoltage clamp protection, and programmable threshold detection requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for 1N4756CE3/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 1N47xxAP series was developed to deliver JEDEC-standardized, high-stability Zener regulation in ruggedized plastic packages for mission-critical power management and voltage reference applications.
FAQ
What is the Zener voltage tolerance of the 1N4756CE3/TR13?
The 1N4756CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This is verified per Microsemi's published electrical characteristics table, where VZ = 47 V at IZT = 5.5 mA with maximum deviation of ±0.94 V. The tighter tolerance reduces calibration burden in precision analog circuits compared to the ±5% 1N4756A variant.
Does the 1N4756CE3/TR13 meet RoHS requirements?
Yes, the 1N4756CE3/TR13 meets RoHS requirements, as confirmed by the "e3" suffix indicating RoHS-compliant annealed matte-tin plating per MIL-STD-750 Method 2026. The device uses void-free thermosetting epoxy body meeting UL94V-0 and contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
What is the maximum surge current rating for the 1N4756CE3/TR13?
The 1N4756CE3/TR13 has a maximum surge current (ISM) rating of 1500 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient per Note 3 in the Microsemi datasheet. This rating applies to transient overvoltage clamping in power rail protection applications.
How is polarity marked on the 1N4756CE3/TR13?
The 1N4756CE3/TR13 uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a higher potential than the anode for Zener regulation. This marking conforms to JEDEC DO-41 mechanical standards and is visible on the black epoxy body; correct orientation is critical for proper reverse-bias operation.
What does the "TR13" suffix signify in 1N4756CE3/TR13?
"TR13" indicates tape-and-reel packaging per EIA-296 standard, with 13-inch reels. This format enables automated pick-and-place assembly and is distinct from bulk or ammo-pack options. The "TR" suffix is added to the base part number per Microsemi's packaging guidelines, and the "13" specifies reel diameter-not quantity or orientation.
1N4756CE3/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):
- 47 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 35.8 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)
1N4756CE3/TR13 FAQ
1.How can I place an order for 1N4756CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4756CE3/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 1N4756CE3/TR13 reliable?
The price and inventory of 1N4756CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4756CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4756CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4756CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4756CE3/TR13?
1N4756CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4756CE3/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 1N4756CE3/TR13?
For technical support, including 1N4756CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4756CE3/TR13 requirements.
6.How does Aetrix verify that 1N4756CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4756CE3/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 1N4756CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4756CE3/TR13?
All 1N4756CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4756CE3/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 1N4756CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N4756CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4756CE3/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…
