My Inquiry
My Account
Microchip Technology 1N5359/TR8
- Part No.:
- 1N5359/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5359/TR8.pdf
- Description:
- DIODE ZENER 24V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,333
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5359/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 24 V, ±5% tolerance (B suffix), 3.5 Ω maximum dynamic impedance at 50 mA test current, and 100 mA maximum regulator current when adequately heat-sunk. It operates across –65°C to +150°C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5359/TR8 datasheet, 1N5359/TR8 pinout, 1N5359/TR8 application, or 1N5359/TR8 equivalent, this page delivers verified electrical specs, thermal derating behavior, JEDEC T-18 package details, RoHS-compliant plating, and direct alternatives with documented voltage/tolerance/power differences.
Technical Context
The 1N5359/TR8 functions as a two-terminal shunt voltage regulator, maintaining stable 24 V output across a wide reverse current range (50 mA to 100 mA) with low dynamic impedance (3.5 Ω). Its regulation accuracy is defined by ±5% tolerance and 0.55 V maximum voltage regulation (ΔVZ) between 10% and 50% of IZM.
It features a moisture-sensitive Level 1 classification per IPC/JEDEC J-STD-020B, void-free UL94V-0 epoxy encapsulation, and tin-lead or RoHS-compliant matte-tin plating. Thermal resistance is 25 °C/W junction-to-lead (3/8″ lead length) and 85 °C/W junction-to-ambient on FR4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal, ±5% tolerance - ensures stable reference within 22.8–25.2 V under specified test conditions. |
| Test Current (IZT) | 50 mA - defines operating point where VZ and ZZ are measured; design must sustain ≥50 mA for rated regulation. |
| Dynamic Impedance (ZZ) | 3.5 Ω max at IZT - low impedance minimizes output voltage variation under load current changes. |
| Max Regulator Current (IZM) | 100 mA - maximum continuous reverse current before exceeding 5 W dissipation at TL = 25°C. |
| Voltage Regulation (ΔVZ) | 0.55 V max - difference between VZ at 10% and 50% of IZM, indicating regulation linearity. |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - requires ≥3/8″ (10 mm) lead length from body for full 5 W rating. |
| Operating Temperature | –65°C to +150°C - supports deployment in extended industrial and automotive under-hood environments. |
Pinout & Package
JEDEC T-18 axial-leaded plastic package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026. Weight: 0.7 g.
| 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; held at stable 24 V relative to anode when reverse current ≥50 mA flows. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered T-18 package | Standardized mechanical footprint enabling drop-in replacement and automated axial insertion. |
| ±5% voltage tolerance (B suffix) | Tighter regulation than standard ±10% parts, reducing need for post-regulation trimming in mid-precision designs. |
| Level 1 moisture sensitivity | No dry pack required prior to assembly-simplifies handling and eliminates bake step in SMT reflow prep. |
| RoHS-compliant option (e3 suffix) | Meets EU Directive 2011/65/EU with matte-tin plating; compatible with lead-free soldering profiles up to 260°C/10 s. |
| High surge current rating (IZSM) | 100 A peak (8.3 ms half-sine) - withstands transient overvoltages without degradation in power supply clamp circuits. |
Applications
| Industrial Power Supply Reference | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Providing stable 24 V reference for feedback loop in 48 V DC-DC converter. IC Role / Device Role / Timing Role: Shunt voltage reference regulating error amplifier input. Use Value: Maintains ±0.55 V regulation across 5–50 mA load variation, ensuring <1% output voltage drift. | Use Scenario: Protecting downstream 24 V logic rails from 36 V transients during load dump. IC Role / Device Role / Timing Role: Crowbar element clamping excess voltage to safe level. Use Value: Absorbs 100 A surge (8.3 ms) without failure, limiting rail voltage to ≤25.2 V (VZ + ΔVZ). |
| Programmable Logic Controller Input Protection | Automotive Sensor Biasing |
Use Scenario: Guarding 24 V digital input channel against ESD and cable-induced surges. IC Role / Device Role / Timing Role: Primary transient suppressor at field-side connector. Use Value: Nonsensitive to ESD per MIL-STD-750 Method 1020; clamps >2 kV HBM events with <10 ns response. | Use Scenario: Supplying regulated 24 V bias to pressure transducer in engine control unit. IC Role / Device Role / Timing Role: Precision voltage source for ratiometric sensor excitation. Use Value: Stable 24 V ±5% across –40°C to +125°C enables <0.1% full-scale error in analog signal chain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B | Same 24 V ±5%, 5 W rating, but in bulk (non-tape-and-reel) packaging; no TR8 suffix. | Not optimized for automated pick-and-place; suitable for hand-soldered prototypes or low-volume repair. | Select 1N5359B only if tape-and-reel feed is unnecessary and cost-per-unit is prioritized over assembly efficiency. |
| MMBZ5245B (SOT-23) | 24 V ±5%, but 0.35 W rating, surface-mount, 3-pin package (cathode/anode/NC); ZZ = 35 Ω. | Limited to low-power signal-level regulation; cannot replace 1N5359/TR8 in 5 W power-clamp roles. | Choose MMBZ5245B only for space-constrained PCBs where <100 mW dissipation suffices and thermal mass is minimal. |
Compared with 1N5359B and MMBZ5245B, the 1N5359/TR8 uniquely combines 5 W power handling, axial-leaded T-18 form factor, tape-and-reel compatibility (TR8), and industrial temperature range-making it irreplaceable in high-energy clamp and reference applications requiring mechanical robustness and thermal margin.
Availability
1N5359/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECU protection circuits, and programmable logic controller input stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5359/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 specifically for ruggedized voltage regulation in harsh-environment power systems-emphasizing thermal stability, surge resilience, and JEDEC-standardized axial packaging for legacy and new industrial designs.
FAQ
What is the Zener voltage tolerance of the 1N5359/TR8?
The 1N5359/TR8 has a ±5% Zener voltage tolerance, confirmed by its "B" suffix per Microsemi's datasheet. This means its regulated voltage falls between 22.8 V and 25.2 V at 50 mA test current and 25°C lead temperature. The tolerance is guaranteed across the full operating temperature range of –65°C to +150°C, and applies to every unit shipped under this part number.
Does the 1N5359/TR8 require dry packing before PCB assembly?
No, the 1N5359/TR8 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored and assembled without baking or humidity-controlled packaging. This simplifies logistics and eliminates pre-reflow bake cycles-even when using RoHS-compliant (e3) versions with matte-tin plating.
What is the maximum continuous reverse current for the 1N5359/TR8 at 25°C?
The maximum continuous reverse current (IZM) for the 1N5359/TR8 is 100 mA at 25°C lead temperature (TL), corresponding to its 5 W power rating. This value assumes 3/8″ (10 mm) lead length from the body. Derating is required above 25°C TL per Figure 1 in the Microsemi datasheet, reaching zero wattage at 150°C TL.
Can the 1N5359/TR8 be used as a direct replacement for the 1N5359B?
Yes-the 1N5359/TR8 is functionally identical to the 1N5359B in electrical and thermal specifications, differing only in packaging: TR8 denotes tape-and-reel (EIA-296 standard) versus bulk packaging for 1N5359B. Both share the same T-18 outline, ±5% tolerance, 24 V nominal VZ, and 5 W rating. No circuit or layout changes are needed when substituting 1N5359/TR8 for 1N5359B in automated assembly.
What is the surge current rating of the 1N5359/TR8 and how is it defined?
The 1N5359/TR8 has a peak non-recurrent surge current (IZSM) rating of 100 A, defined as the maximum amplitude of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without parametric shift or catastrophic failure-critical for use in load-dump protection and industrial surge suppression. The value is validated per Microsemi's test methodology and applies to the full T-18 package configuration.
1N5359/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:
- ±20%
- 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
1N5359/TR8 FAQ
1.How can I place an order for 1N5359/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5359/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 1N5359/TR8 reliable?
The price and inventory of 1N5359/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5359/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5359/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5359/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5359/TR8?
1N5359/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5359/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 1N5359/TR8?
For technical support, including 1N5359/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5359/TR8 requirements.
6.How does Aetrix verify that 1N5359/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5359/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 1N5359/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5359/TR8?
All 1N5359/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5359/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 1N5359/TR8 part is unused and in its original packaging.
Return procedure for 1N5359/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5359/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…
