My Inquiry
My Account
Microchip Technology 1N5361C/TR8
- Part No.:
- 1N5361C/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5361C/TR8.pdf
- Description:
- DIODE ZENER 27V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,864
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5361C/TR8 from Microsemi is a 5 W, 27 V ±2% tolerance axial-leaded silicon Zener diode optimized for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation. It delivers stable regulation at 27 V with 5.0 Ω dynamic impedance (ZZ) at 50 mA test current, supports 19.4 mA maximum reverse leakage at 20.1 V, and operates across –65 °C to +150 °C.
For engineers reviewing the 1N5361C/TR8 datasheet, 1N5361C/TR8 pinout, 1N5361C/TR8 application, or 1N5361C/TR8 equivalent, key selection criteria include its ±2% voltage tolerance (C suffix), 5 W steady-state power rating at 25 °C lead temperature, low 5.0 Ω Zener impedance, 19.4 mA IZM current capability, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage reference where reverse-biased operation maintains a stable 27 V across its terminals within ±2% tolerance. Its 5.0 Ω dynamic impedance ensures minimal voltage shift under load variations up to 50 mA, while thermal resistance of 25 °C/W (junction-to-lead) enables reliable operation with standard 3/8″ lead length heat sinking.
The 1N5361C/TR8 exhibits 0.60 V maximum voltage regulation (ΔVZ) between 10% and 50% of IZM, confirming tight regulation stability across operating current range. Its 19.4 mA maximum Zener current (IZM) is calculated per JEDEC spec using P/VZM = 5 W / 27.54 V (upper limit of ±2% tolerance), and it withstands 120 A non-repetitive surge current (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±2% - precise reference point for feedback or clamping at nominal 27 V |
| Test Current (IZT) | 50 mA - standardized bias point for measuring VZ and ZZ |
| Dynamic Impedance (ZZ) | 5.0 Ω - low AC resistance ensures minimal output voltage variation under changing load |
| Max Reverse Leakage (IR) | 0.5 μA @ 20.1 V - negligible standby current below regulation threshold |
| Max Zener Current (IZM) | 19.4 mA - maximum continuous DC current before exceeding 5 W power limit at VZM |
| Voltage Regulation (ΔVZ) | 0.60 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| Surge Current (IZSM) | 120 A (8.3 ms half-sine) - transient overcurrent handling for ESD/surge protection |
Pinout & Package
Package: Axial-leaded T-18 plastic encapsulated case per JEDEC DO-204AL; cathode indicated by band; void-free UL94V-0 epoxy body; 0.7 g weight; RoHS-compliant matte-tin plating on annealed leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-bias polarity requires cathode at higher potential |
| Cathode | Regulated output node | Banded end; held at stable 27 V when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop accuracy vs. ±5% (B) or ±10% (A) variants |
| 5.0 W power rating at 25 °C lead temp | Supports higher continuous dissipation than 1 W or 3 W Zeners without forced cooling |
| 25 °C/W junction-to-lead thermal resistance | Allows effective passive heat removal using PCB copper or chassis mounting at 3/8″ lead length |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during assembly or field service |
| Moisture sensitivity Level 1 (IPC/JEDEC J-STD-020B) | No dry pack or baking required prior to reflow, reducing manufacturing overhead |
Applications
| Switching Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback path via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision 27 V reference establishing feedback threshold for PWM controller. Use Value: ±2% tolerance ensures output stays within ±1% system specification under line/load transients. |
Use Scenario: Shunts excess energy during input surge events in industrial 24 V DC systems. IC Role / Device Role / Timing Role: Fast-acting clamp limiting rail voltage to 27.54 V (max VZ) before downstream damage occurs. Use Value: 120 A surge rating handles IEC 61000-4-5 Level 4 surges without degradation. |
| Programmable Reference Source | DC-DC Converter Trim Adjustment |
Use Scenario: Provides stable 27 V reference for DAC-based programmable power supply setpoint control. IC Role / Device Role / Timing Role: Low-impedance voltage source driving op-amp summing junction in reference generation circuit. Use Value: 5.0 Ω ZZ minimizes DAC output loading error and improves setpoint resolution. |
Use Scenario: Fine-tunes output voltage of fixed-output DC-DC module via external resistor divider. IC Role / Device Role / Timing Role: Sets upper divider node voltage to adjust feedback ratio without modifying internal compensation. Use Value: Tight 27 V ±2% tolerance ensures trim accuracy remains within ±0.5% of target output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5361B/TR8 | ±5% tolerance (B suffix), same 27 V nominal, 5.0 Ω ZZ, 19.4 mA IZM | Loose tolerance acceptable in non-critical clamping or coarse reference roles | Select when cost sensitivity outweighs regulation accuracy requirements |
| MMSZ5256ET1G | Surface-mount SOD-123, 27 V ±5%, 500 mW rating, 35 Ω ZZ, 125 °C max junction temp | Lower power and higher impedance limit use to low-current references or signal-level clamping | Choose only for space-constrained PCBs where 5 W dissipation is unnecessary |
Compared with 1N5361B/TR8 and MMSZ5256ET1G, the 1N5361C/TR8 provides superior voltage accuracy (±2% vs. ±5%) and higher power handling (5 W vs. 0.5 W), making it optimal for high-stability, high-power regulation where thermal margin and precision are jointly critical.
Availability
1N5361C/TR8 is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, and programmable reference sources requiring stable component supply, consistent parametric performance, and long-term obsolescence mitigation.
Supply support for 1N5361C/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/C series was designed for robust, high-power voltage regulation in harsh-environment power systems where long-term stability, surge resilience, and wide temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5361C/TR8?
The 1N5361C/TR8 has a Zener voltage tolerance of ±2%, as indicated by the "C" suffix in its part number. This means its actual breakdown voltage falls between 26.46 V and 27.54 V at 50 mA test current and 25 °C lead temperature. This tighter tolerance enables higher accuracy in feedback and reference applications compared to ±5% (B suffix) or ±10% (A suffix) variants of the same 27 V family.
What is the maximum continuous Zener current for the 1N5361C/TR8?
The maximum continuous Zener current (IZM) for the 1N5361C/TR8 is 19.4 mA when operated at 25 °C lead temperature. This value is derived from the 5 W power rating divided by the upper limit of its ±2% tolerance range (27.54 V), ensuring safe operation without exceeding thermal limits. Derating applies above 25 °C per the published power derating curve.
Does the 1N5361C/TR8 require dry packing before soldering?
No, the 1N5361C/TR8 does not require dry packing before soldering. It carries moisture sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored and processed without baking or humidity-controlled packaging. This simplifies manufacturing logistics and eliminates pre-reflow bake steps typically needed for higher MSL-rated components.
What is the dynamic impedance of the 1N5361C/TR8, and why does it matter?
The dynamic impedance (ZZ) of the 1N5361C/TR8 is 5.0 Ω, measured at 50 mA test current and 1 kHz AC signal. This low value indicates minimal change in regulated voltage under varying load currents - critical for maintaining output stability in feedback loops or reference circuits where even small impedance-induced shifts degrade system accuracy.
Is the 1N5361C/TR8 RoHS compliant?
Yes, the 1N5361C/TR8 is RoHS compliant, as confirmed by the "e3" suffix in its full manufacturer designation (1N5361C/TR8 e3). It features RoHS-compliant matte-tin plating on annealed leads and meets all substance restrictions defined in Directive 2011/65/EU, including lead content ≤1000 ppm, making it suitable for environmentally regulated commercial and industrial designs.
1N5361C/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):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 19.4 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
1N5361C/TR8 FAQ
1.How can I place an order for 1N5361C/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5361C/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 1N5361C/TR8 reliable?
The price and inventory of 1N5361C/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5361C/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5361C/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5361C/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5361C/TR8?
1N5361C/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5361C/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 1N5361C/TR8?
For technical support, including 1N5361C/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5361C/TR8 requirements.
6.How does Aetrix verify that 1N5361C/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5361C/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 1N5361C/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5361C/TR8?
All 1N5361C/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5361C/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 1N5361C/TR8 part is unused and in its original packaging.
Return procedure for 1N5361C/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5361C/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…
