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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Microchip Technology 1N5358CE3/TR8

Name: 1N5358CE3/TR8
Brand: Microchip Technology
SKU: 1N5358CE3/TR8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5358CE3/TR8

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

Package:: T-18, Axial

Datasheet:: 1N5358CE3/TR8.pdf

Description:: DIODE ZENER 22V 5W T18

Quantity:: RFQ Add To RFQ list

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Product details

Overview

1N5358CE3/TR8 from Microsemi is a 5 W axial-leaded Zener diode with nominal regulation voltage of 22 V, ±2% tolerance (C suffix), 3.5 Ω dynamic impedance at 50 mA test current, and maximum reverse leakage of 0.5 μA at 15.8 V. It operates from –65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in power supply feedback loops.

For engineers reviewing the 1N5358CE3/TR8 datasheet, 1N5358CE3/TR8 pinout, 1N5358CE3/TR8 application, or 1N5358CE3/TR8 equivalent, this page delivers verified electrical specs, thermal derating behavior, RoHS-compliant plating details, and direct alternatives for stable 22 V regulation under varying load and temperature conditions.

Technical Context

This Zener diode functions as a two-terminal voltage reference device operating in reverse breakdown. Its regulation stability relies on low dynamic impedance (3.5 Ω) and tight voltage tolerance (±2%), enabling accurate feedback in linear regulators and error amplifiers.

It exhibits minimal voltage drift across its rated current range (50 mA I_ZT, up to 75 mA I_ZM) and maintains low leakage (<0.5 μA) at 72% of V_Z, supporting reliable clamping in transient suppression circuits without significant standby current draw.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	22 V nominal at 50 mA; enables precise 22 V reference or clamp point in analog and power circuits.
Power Dissipation	5.0 W at 25 °C lead temperature; requires thermal management above 25 °C per derating curve.
Dynamic Impedance (Z_Z)	3.5 Ω at I_ZT = 50 mA; ensures <110 mV output variation across 10–50% of max current.
Reverse Leakage (I_R)	≤0.5 μA at V_R = 15.8 V; minimizes quiescent current in high-impedance bias networks.
Max Regulator Current (I_ZM)	75 mA at V_Z = 22 V; defines safe continuous DC current limit with adequate heatsinking.
Surge Current (I_ZSM)	4.7 A peak (8.3 ms half-sine); supports transient overvoltage absorption in protection circuits.
Operating Temperature	–65 °C to +150 °C; suitable for industrial and automotive under-hood environments.

Pinout & Package

Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode indicated by band; leads are annealed matte-tin plated per MIL-STD-750 Method 2026.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Reference ground node	Connected to circuit common; reverse-biased operation requires cathode at higher potential.
Cathode	Regulated output node	Banded end; supplies stable 22 V when reverse-biased above breakdown threshold.

Key Features

Feature	Design Value
±2% Zener voltage tolerance	Enables high-accuracy voltage references without external trimming in feedback networks.
RoHS-compliant e3 suffix	Meets EU Directive 2011/65/EU; tin-only plating eliminates lead contamination risk in assembly.
Moisture sensitivity Level 1	No dry pack required prior to reflow; simplifies handling and storage logistics.
Low thermal resistance (25 °C/W)	Supports 5 W dissipation with only 3/8″ lead length; reduces need for PCB copper pour or heatsinks.
Nonsensitive to ESD (MIL-STD-750 Method 1020)	Eliminates need for special ESD handling during manual assembly or testing.

Applications

Switching Power Supply Feedback	Overvoltage Protection Clamp
Use Scenario: Used in TL431-based or discrete op-amp feedback loops to regulate 22 V output in offline AC/DC converters. IC Role / Device Role / Timing Role: Precision voltage reference providing stable setpoint for error amplifier comparison. Use Value: ±2% tolerance and 3.5 Ω Z_Z ensure <±0.5 V output deviation across line/load/temperature variations.	Use Scenario: Placed across sensitive 22 V rail (e.g., FPGA I/O bank) to shunt surge energy during ESD or lightning-induced transients. IC Role / Device Role / Timing Role: Two-terminal clamping device limiting voltage excursion to ≤22.5 V during 4.7 A 8.3 ms surges. Use Value: 4.7 A surge rating and low leakage (<0.5 μA) prevent false triggering while maintaining rail integrity.
Linear Regulator Reference	Test Equipment Voltage Standard
Use Scenario: Provides stable 22 V reference for series-pass transistor base drive in lab-grade bench power supplies. IC Role / Device Role / Timing Role: Primary voltage reference element defining output setpoint accuracy and temperature coefficient. Use Value: Low ΔV_Z (0.45 V) between 10% and 50% I_ZM ensures consistent regulation across 7.5–37.5 mA current range.	Use Scenario: Calibrated reference in multimeter front-end or automated test fixture requiring traceable 22 V standard. IC Role / Device Role / Timing Role: Passive calibration standard replacing active IC references where long-term drift must be minimized. Use Value: ±2% initial tolerance and <0.5 μA leakage support <0.1% measurement uncertainty in high-Z input circuits.

Switching Power Supply Feedback

Overvoltage Protection Clamp

Use Scenario: Used in TL431-based or discrete op-amp feedback loops to regulate 22 V output in offline AC/DC converters.

IC Role / Device Role / Timing Role: Precision voltage reference providing stable setpoint for error amplifier comparison.

Use Value: ±2% tolerance and 3.5 Ω Z_Z ensure <±0.5 V output deviation across line/load/temperature variations.

Use Scenario: Placed across sensitive 22 V rail (e.g., FPGA I/O bank) to shunt surge energy during ESD or lightning-induced transients.

IC Role / Device Role / Timing Role: Two-terminal clamping device limiting voltage excursion to ≤22.5 V during 4.7 A 8.3 ms surges.

Use Value: 4.7 A surge rating and low leakage (<0.5 μA) prevent false triggering while maintaining rail integrity.

Linear Regulator Reference

Test Equipment Voltage Standard

Use Scenario: Provides stable 22 V reference for series-pass transistor base drive in lab-grade bench power supplies.

IC Role / Device Role / Timing Role: Primary voltage reference element defining output setpoint accuracy and temperature coefficient.

Use Value: Low ΔV_Z (0.45 V) between 10% and 50% I_ZM ensures consistent regulation across 7.5–37.5 mA current range.

Use Scenario: Calibrated reference in multimeter front-end or automated test fixture requiring traceable 22 V standard.

IC Role / Device Role / Timing Role: Passive calibration standard replacing active IC references where long-term drift must be minimized.

Use Value: ±2% initial tolerance and <0.5 μA leakage support <0.1% measurement uncertainty in high-Z input circuits.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5358B	Same 22 V nominal, but ±5% tolerance (B suffix) and higher Z_Z (3.5 Ω → 6.0 Ω).	Acceptable where tighter regulation not required; lower cost for non-critical references.	Select when ±5% V_Z meets system spec and lower Z_Z is unnecessary.
SMBJ5358CE3	Surface-mount SMB package; same 22 V/±2%/3.5 Ω specs; 1.47 W steady-state rating on FR4.	Used in space-constrained PCBs; requires different thermal layout and reflow profile.	Choose for automated SMT assembly where board area is limited and thermal design accommodates lower power rating.

Compared with 1N5358B and SMBJ5358CE3, the 1N5358CE3/TR8 uniquely balances axial-leaded serviceability, ±2% precision, and 5 W dissipation-making it optimal for through-hole prototyping, repair, and industrial power supplies where mechanical robustness and thermal headroom are prioritized.

Availability

1N5358CE3/TR8 is available at Aetrix Electronics and suitable for switching power supply feedback, overvoltage protection clamp, and linear regulator reference applications requiring stable component supply, full RoHS compliance, and traceable sourcing.

Supply support for 1N5358CE3/TR8 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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.

The 1N53xxB series was designed for ruggedized voltage regulation in harsh-environment power systems, emphasizing wide temperature operation, surge resilience, and military-grade screening options.

FAQ

What is the Zener voltage tolerance of the 1N5358CE3/TR8?

The 1N5358CE3/TR8 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in the part number. This means its measured breakdown voltage at 50 mA test current falls within 21.56 V to 22.44 V at 25 °C lead temperature. The tighter tolerance supports higher-accuracy voltage references compared to ±5% (B suffix) or ±10% (A suffix) variants in the same family.

Does the 1N5358CE3/TR8 require dry packing before soldering?

No, the 1N5358CE3/TR8 does not require dry packing before soldering. It carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1 classification, meaning it can be stored indefinitely at ambient conditions without baking. Its void-free thermosetting epoxy body and RoHS-compliant matte-tin plating also support standard 260 °C / 10 s reflow profiles without popcorn or delamination risk.

What is the maximum continuous Zener current for the 1N5358CE3/TR8?

The maximum continuous Zener current (I_ZM) for the 1N5358CE3/TR8 is 75 mA when operated at 25 °C lead temperature with 3/8″ (10 mm) lead length from the body. At higher temperatures, current must be reduced per the derating curve in Figure 1 of the datasheet-e.g., ~50 mA at 75 °C lead temperature-to maintain safe junction temperature and avoid thermal runaway.

How is polarity marked on the 1N5358CE3/TR8?

The 1N5358CE3/TR8 uses a cathode band marking: a single colored band near one end of the axial body identifies the cathode terminal. During operation, the banded end must be held at a more positive potential than the anode to achieve reverse-bias Zener conduction. Forward voltage drop is ≤1.2 V at 1.0 A, confirming standard silicon diode behavior in forward bias.

Is the 1N5358CE3/TR8 suitable for surge protection applications?

Yes, the 1N5358CE3/TR8 is suitable for surge protection applications due to its specified 4.7 A peak non-recurrent surge current (I_ZSM) for an 8.3 ms half-sine waveform. Its low dynamic impedance (3.5 Ω) and tight voltage regulation (ΔV_Z = 0.45 V) allow it to clamp transients predictably without excessive overshoot, especially when paired with series current-limiting impedance in the protected circuit.

1N5358CE3/TR8 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: T-18, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 22 V

Tolerance:: ±2%

Power - Max:: 5 W

Impedance (Max) (Zzt):: 3.5 Ohms

Current - Reverse Leakage @ Vr:: 500 nA @ 15.8 V

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 1 A

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: T-18

1N5358CE3/TR8 FAQ

1.How can I place an order for 1N5358CE3/TR8 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5358CE3/TR8 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 1N5358CE3/TR8 reliable?

The price and inventory of 1N5358CE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5358CE3/TR8 is usually 5 days.

3.What payment methods are accepted for 1N5358CE3/TR8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5358CE3/TR8 transactions.

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4.How is shipping managed for 1N5358CE3/TR8?

1N5358CE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5358CE3/TR8 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 1N5358CE3/TR8?

For technical support, including 1N5358CE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5358CE3/TR8 requirements.

6.How does Aetrix verify that 1N5358CE3/TR8 is sourced from the original manufacturer or authorized distributors?

All 1N5358CE3/TR8 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 1N5358CE3/TR8 meets industry standards.

7.What is the process for return or replacement of 1N5358CE3/TR8?

All 1N5358CE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5358CE3/TR8, 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 1N5358CE3/TR8 part is unused and in its original packaging.

Return procedure for 1N5358CE3/TR8:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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