My Inquiry
My Account
Microchip Technology 1N4758CPE3/TR12
- Part No.:
- 1N4758CPE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4758CPE3/TR12.pdf
- Description:
- DIODE ZENER 56V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,322
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4758CPE3/TR12 from Microsemi is a 56 V, ±2% tolerance, 1 W axial-lead Zener diode in DO-41 package, rated for 4.5 mA test current, 110 Ω dynamic impedance at IZT, and 2000 mA maximum surge current. It provides precision voltage regulation in power supply reference and overvoltage protection circuits operating from −65 °C to +150 °C.
For engineers reviewing the 1N4758CPE3/TR12 datasheet, 1N4758CPE3/TR12 pinout, 1N4758CPE3/TR12 application, or 1N4758CPE3/TR12 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (45 °C/W junction-to-lead), RoHS-compliant matte-tin plating, tape-and-reel packaging (TR12), and JEDEC-registered 1N4758A-series compliance.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable 56 V regulation across load and line variations. Its 2% voltage tolerance (C suffix) and low knee impedance (16 Ω at 0.25 mA) support high-accuracy reference designs where drift must be minimized under varying temperature and current conditions.
The DO-41 plastic package delivers 45 °C/W junction-to-lead thermal resistance at 10 mm lead length, enabling reliable 1 W dissipation up to 105 °C lead temperature. It meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity with no dry pack required and complies with MIL-STD-750 Method 1020 for ESD insensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±2% at 4.5 mA - enables tight-regulation references for analog sensing and feedback loops |
| Power Dissipation | 1.0 W at TL < 105 °C - supports continuous operation in compact power supplies without forced cooling |
| Dynamic Impedance (ZZT) | 110 Ω at 4.5 mA - limits output voltage variation under changing load current |
| Max Surge Current (ISM) | 2000 mA (½-sine, 1/120 s) - withstands transient overloads in clamp/protection circuits |
| Thermal Resistance | 45 °C/W junction-to-lead - allows direct thermal path to PCB copper or heatsink via leads |
| Operating Temperature | −65 °C to +150 °C - suitable for automotive under-hood and industrial control environments |
| Reverse Leakage | 5 μA at 42.6 V - ensures low standby power loss in high-impedance bias networks |
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 per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during regulation; carries full Zener current |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to unregulated input; maintains 56 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Reduces calibration burden in precision voltage references and feedback dividers |
| RoHS-compliant "e3" termination | Enables compliance with environmental directives without sacrificing solderability or reliability |
| Tape-and-reel packaging (TR12) | Supports automated SMT placement despite axial-lead form factor via carrier tape handling |
| Level 1 moisture sensitivity | Eliminates bake-out requirement prior to assembly, reducing manufacturing cost and cycle time |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Permits safe handling in standard production environments without special grounding protocols |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or discrete transistor-based regulators. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, sinking excess current to hold output at precise 56 V. Use Value: ±2% tolerance ensures output accuracy remains within 1.12 V total deviation, critical for analog sensor excitation and DAC reference stability. | Use Scenario: Protecting downstream circuitry from transient voltage spikes on 48 V DC bus lines. IC Role / Device Role / Timing Role: Shunt clamping element that conducts above 56 V to divert surge energy to ground. Use Value: 2000 mA surge rating handles 100 A·s energy pulses without degradation, extending system reliability in industrial motor drives. |
| Voltage Monitor Threshold | Signal Level Translation |
Use Scenario: Detecting undervoltage or overvoltage conditions in battery management systems using comparator inputs. IC Role / Device Role / Timing Role: Provides stable 56 V threshold for comparator hysteresis or window detection circuits. Use Value: Low 16 Ω knee impedance (at 0.25 mA) ensures sharp turn-on transition, minimizing false triggering near trip point. | Use Scenario: Biasing gate drivers or level-shifting logic signals between 3.3 V and higher-voltage domains. IC Role / Device Role / Timing Role: Clamps signal swing to defined 56 V ceiling while passing AC components via series capacitor. Use Value: 110 Ω dynamic impedance preserves signal integrity up to 10 kHz, supporting clean edge transitions in isolated gate drive interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4758A-T | Same 56 V ±5%, DO-41, but lacks "e3" RoHS plating and TR12 tape-and-reel | Not suitable for RoHS-compliant production or automated assembly | Select only for legacy repair or non-RoHS prototyping |
| MMSZ5259ET1G | Surface-mount SOD-123, 56 V ±5%, 500 mW, 100 Ω ZZT | Lower power rating and different thermal profile; requires PCB layout change | Choose when board space is constrained and 1 W dissipation is not required |
Compared with 1N4758A-T and MMSZ5259ET1G, the 1N4758CPE3/TR12 uniquely combines ±2% tolerance, 1 W capability, RoHS compliance, and tape-and-reel packaging-making it optimal for high-accuracy, high-volume, environmentally compliant power reference designs.
Availability
1N4758CPE3/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and voltage monitoring applications requiring stable component supply, consistent parametric performance, and full RoHS compliance.
Supply support for 1N4758CPE3/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, JEDEC-standardized Zener regulation in harsh-environment power systems where long-term stability and thermal resilience are critical.
FAQ
What is the Zener voltage tolerance of the 1N4758CPE3/TR12?
The 1N4758CPE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its nominal 56 V breakdown voltage is guaranteed between 54.88 V and 57.12 V when measured at 4.5 mA test current and 25 °C lead temperature. This tighter tolerance reduces calibration overhead in precision reference circuits compared to standard ±5% variants like the 1N4758A.
Does the 1N4758CPE3/TR12 meet RoHS requirements?
Yes, the 1N4758CPE3/TR12 meets RoHS requirements, as confirmed by the "e3" suffix indicating RoHS-compliant matte-tin plating on its axial leads. The device complies with EU Directive 2011/65/EU and is manufactured without lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE. Its DO-41 package uses UL94V-0 void-free epoxy, and all materials are fully traceable per Aetrix Electronics' sourcing policy.
What is the maximum surge current rating for the 1N4758CPE3/TR12?
The 1N4758CPE3/TR12 has a maximum surge current (ISM) rating of 2000 mA, tested using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating applies to short-duration transients such as inductive kickback or lightning-induced surges. Engineers must ensure average power dissipation remains within 1 W limits during repeated surges, and derate accordingly above 105 °C lead temperature.
Is the 1N4758CPE3/TR12 supplied in tape-and-reel format?
Yes, the "TR12" suffix in 1N4758CPE3/TR12 explicitly indicates tape-and-reel packaging per EIA-296 standards, with 12,000 units per reel. This format supports automated pick-and-place assembly despite the device's axial-lead DO-41 construction. Reel dimensions, orientation, and carrier tape specifications comply with industry-standard handling equipment used in high-volume electronics manufacturing.
What is the thermal resistance specification for the 1N4758CPE3/TR12?
The 1N4758CPE3/TR12 has a thermal resistance of 45 °C/W junction-to-lead when measured at 10 mm (3/8 inch) lead length from the body. This value enables accurate junction temperature estimation: TJ = TL + (P × 45). At 1 W dissipation and 105 °C max lead temperature, junction temperature reaches 150 °C-the absolute maximum rated operating temperature-confirming safe operation under worst-case thermal conditions.
1N4758CPE3/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):
- 56 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 110 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 42.6 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)
1N4758CPE3/TR12 FAQ
1.How can I place an order for 1N4758CPE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4758CPE3/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 1N4758CPE3/TR12 reliable?
The price and inventory of 1N4758CPE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4758CPE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4758CPE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4758CPE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4758CPE3/TR12?
1N4758CPE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4758CPE3/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 1N4758CPE3/TR12?
For technical support, including 1N4758CPE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4758CPE3/TR12 requirements.
6.How does Aetrix verify that 1N4758CPE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4758CPE3/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 1N4758CPE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4758CPE3/TR12?
All 1N4758CPE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4758CPE3/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 1N4758CPE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4758CPE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4758CPE3/TR12 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…
