My Inquiry
My Account
Microchip Technology 1N5359C/TR8
- Part No.:
- 1N5359C/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5359C/TR8.pdf
- Description:
- DIODE ZENER 24V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,680
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5359C/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 24 V, ±2% tolerance (C suffix), 50 mA test current, 3.5 Ω dynamic impedance at IZT, and maximum reverse current of 0.5 μA at 19.4 V. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N5359C/TR8 datasheet, 1N5359C/TR8 pinout, 1N5359C/TR8 application, or 1N5359C/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (100 A), voltage regulation (ΔVZ = 0.55 V), and RoHS-compliant e3 packaging.
Technical Context
This device operates as a precision shunt voltage regulator, maintaining stable output voltage under varying load and line conditions by conducting reverse current above its breakdown threshold. Its low dynamic impedance (3.5 Ω) ensures minimal voltage deviation across 10–50% of maximum Zener current (IZM = 100 mA).
Designed for through-hole mounting with T-18 package, it features cathode band polarity marking, UL94V-0 epoxy encapsulation, and moisture sensitivity level 1-no dry pack required. Thermal performance is specified at 3/8″ lead length (25 °C/W) or FR4 board (85 °C/W), enabling reliable operation from –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±2% - precise reference voltage for feedback loops and voltage clamping |
| Test Current (IZT) | 50 mA - operating point where VZ and ZZ are guaranteed per JEDEC spec |
| Dynamic Impedance (ZZ) | 3.5 Ω at IZT - low AC resistance ensures tight regulation under dynamic load changes |
| Max Reverse Current (IR) | 0.5 μA at VR = 19.4 V - negligible leakage below breakdown, critical for low-power standby circuits |
| Power Dissipation (Pd) | 5.0 W at TL = 25 °C - supports high-current regulation when adequately heat-sunk |
| Surge Current (IZSM) | 100 A (8.3 ms half-sine) - withstands transient overvoltage events without failure |
| Voltage Regulation (ΔVZ) | 0.55 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
Pinout & Package
Package: T-18 axial-leaded plastic case (JEDEC TO-204-AD), void-free thermosetting epoxy body meeting UL94V-0, tin-lead or RoHS-compliant matte-tin plating, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; reverse-biased operation requires cathode at higher potential |
| Cathode | Regulated output node | Banded end; connected to voltage source input; maintains 24 V relative to anode during conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop accuracy in precision power supplies without trimming |
| 25 °C/W junction-to-lead thermal resistance | Allows 5 W continuous dissipation with minimal heatsinking at 3/8″ lead length |
| 100 A non-repetitive surge rating | Provides robust transient immunity in automotive and industrial input stages |
| Moisture Sensitivity Level 1 | Eliminates baking requirement prior to PCB assembly, reducing manufacturing cost |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and ESD protection circuitry in final systems |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side error amplifiers. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 24 V reference to optocoupler input or TL431 comparator. Use Value: ±2% tolerance and 3.5 Ω dynamic impedance ensure <±0.5% output voltage drift across line/load variations. | Use Scenario: Clamping induced transients on 24 V control bus in PLC I/O modules. IC Role / Device Role / Timing Role: Transient voltage suppressor diverting surge energy to ground before reaching downstream logic. Use Value: 100 A surge rating and 0.55 V ΔVZ limit clamp voltage excursion to ≤24.55 V during 8.3 ms surges. |
| Automotive Battery Monitoring | Programmable Voltage Threshold Detector |
Use Scenario: Providing regulated bias for analog front-end comparators monitoring 24 V vehicle battery health. IC Role / Device Role / Timing Role: Precision Zener reference setting trip point for undervoltage/overvoltage alarms. Use Value: Low 0.5 μA IR at 19.4 V prevents loading of high-impedance sensing nodes, preserving measurement accuracy. | Use Scenario: Setting adjustable trigger threshold in discrete window comparator circuits. IC Role / Device Role / Timing Role: Stable reference node defining upper bound of detection window for analog signal monitoring. Use Value: Tight 2% tolerance eliminates need for external calibration resistors in production test fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B/TR8 | ±5% tolerance (B suffix), same VZ nominal, identical package and thermal specs | Acceptable where reference accuracy <±5% is sufficient; lower cost | Select when budget constraints outweigh precision requirements and system gain compensates tolerance |
| MMSZ5242B-TP | Surface-mount SOD-123, 500 mW rating, 24 V ±5%, 22 Ω ZZ at 20 mA | Not drop-in; requires PCB redesign; suited for space-constrained consumer designs | Choose only if board real estate is critical and power dissipation ≤0.5 W is acceptable |
Compared with 1N5359B/TR8, the 1N5359C/TR8 delivers twice the voltage accuracy at same cost premium, while MMSZ5242B-TP trades 10× lower power rating and reduced precision for miniaturization-making 1N5359C/TR8 optimal for industrial 5 W reference needs.
Availability
1N5359C/TR8 is available at Aetrix Electronics and suitable for industrial power supply reference, overvoltage protection clamp, and automotive battery monitoring requiring stable component supply and long-term obsolescence management.
Supply support for 1N5359C/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 1N53xx series was designed specifically for ruggedized 5 W Zener regulation in harsh-environment power systems where stability, surge resilience, and long-term parametric consistency are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5359C/TR8?
The 1N5359C/TR8 has a Zener voltage tolerance of ±2%, as indicated by the "C" suffix per Microsemi's documentation. This means its actual breakdown voltage falls within 23.52 V to 24.48 V at 50 mA test current and 25 °C lead temperature. The 1N5359C/TR8 achieves this tighter tolerance versus standard ±5% (B suffix) or ±10% (A suffix) variants, supporting higher-accuracy regulation without external trimming.
What is the maximum steady-state power dissipation for the 1N5359C/TR8?
The 1N5359C/TR8 is rated for 5.0 W steady-state power dissipation at a lead temperature (TL) of 25 °C with 3/8″ (10 mm) lead length from the body. When mounted on an FR4 PCB with 1 oz copper, its derated power drops to 1.47 W at 25 °C ambient due to higher thermal resistance (85 °C/W). The 1N5359C/TR8 must be heat-sunk accordingly to avoid exceeding junction temperature limits across –65 °C to +150 °C operating range.
Does the 1N5359C/TR8 meet RoHS requirements?
Yes, the 1N5359C/TR8 is RoHS compliant, as confirmed by the "e3" suffix in Microsemi's official documentation. It uses RoHS-compliant annealed matte-tin plating on leads and meets UL94V-0 flammability standards. The 1N5359C/TR8 does not require dry packing (MSL Level 1), simplifying handling and reflow processes in environmentally compliant manufacturing lines.
What is the surge current rating of the 1N5359C/TR8 and how is it defined?
The 1N5359C/TR8 has a maximum non-repetitive surge current (IZSM) rating of 100 A, defined as the peak value of a single 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without degradation, making the 1N5359C/TR8 suitable for clamping inductive kickback or lightning-induced surges in industrial controls. Repeated surges beyond specification may cause cumulative damage to the 1N5359C/TR8 junction.
How is polarity marked on the 1N5359C/TR8 and what is its operating configuration?
The 1N5359C/TR8 uses a cathode band marking on the body to indicate polarity: the banded end is the cathode and must be held at a higher potential than the anode to achieve Zener conduction. In normal operation, the 1N5359C/TR8 is reverse-biased, with current flowing from cathode to anode once the applied voltage exceeds 24 V. Forward voltage is ≤1.2 V at 1.0 A, but the 1N5359C/TR8 is not intended for forward conduction in regulation applications.
1N5359C/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):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 17.3 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
1N5359C/TR8 FAQ
1.How can I place an order for 1N5359C/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5359C/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 1N5359C/TR8 reliable?
The price and inventory of 1N5359C/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5359C/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5359C/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5359C/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5359C/TR8?
1N5359C/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5359C/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 1N5359C/TR8?
For technical support, including 1N5359C/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5359C/TR8 requirements.
6.How does Aetrix verify that 1N5359C/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5359C/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 1N5359C/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5359C/TR8?
All 1N5359C/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5359C/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 1N5359C/TR8 part is unused and in its original packaging.
Return procedure for 1N5359C/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5359C/TR8 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…
