My Inquiry
My Account
Microchip Technology 1N5361A/TR12
- Part No.:
- 1N5361A/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5361A/TR12.pdf
- Description:
- DIODE ZENER 27V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,390
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5361A/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 27 V, ±10% tolerance (A suffix), 50 mA test current, 5.0 Ω maximum dynamic impedance at IZT, and 120 mA maximum Zener current (IZM) 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 1N5361A/TR12 datasheet, 1N5361A/TR12 pinout, 1N5361A/TR12 application, or 1N5361A/TR12 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/IZM differences.
Technical Context
This device functions as a two-terminal voltage regulator diode operating in reverse breakdown. Its Zener voltage is specified at 27 V ±10% under 50 mA DC test current (IZT), with dynamic impedance ≤5.0 Ω and voltage regulation (ΔVZ) ≤4.1 V between 10% and 50% of IZM.
Thermal performance is defined by junction-to-lead resistance of 25 °C/W at 3/8″ lead length and junction-to-ambient resistance of 85 °C/W on FR4 board (1 oz Cu, 4 mm² pad). It withstands 8.3 ms half-sine surge currents up to 120 A and exhibits <0.5 μA reverse leakage at 20.1 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±10% - defines stable regulation point under 50 mA bias; actual range 24.3–29.7 V. |
| Test Current (IZT) | 50 mA - standardized DC current at which VZ is measured; sets operating point for regulation accuracy. |
| Dynamic Impedance (ZZ) | 5.0 Ω max - low AC resistance ensures minimal voltage shift under load transients. |
| Max Zener Current (IZM) | 120 mA - maximum continuous DC current at TL = 25 °C with adequate heatsinking. |
| Power Dissipation | 5.0 W at TL < 25 °C - requires thermal management beyond 25 °C per Figure 1 derating curve. |
| Reverse Leakage (IR) | 0.5 μA max at VR = 20.1 V - ensures low standby power loss in high-impedance bias networks. |
| Surge Current (IZSM) | 120 A peak (8.3 ms half-sine) - supports transient overvoltage clamping without failure. |
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. Body meets UL94V-0; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / cathode-referenced ground node | Connected to lower-potential side in reverse-bias regulation; carries full Zener current during operation. |
| Cathode | Regulated output terminal / voltage reference node | Banded end; held at stable 27 V ±10% above anode when reverse-biased above knee voltage. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered T-18 package | Standardized mechanical interface enabling automated axial insertion and compatibility with legacy PCB footprints. |
| Moisture sensitivity Level 1 | No dry pack required - simplifies handling, storage, and assembly logistics without baking preconditioning. |
| Low thermal resistance (25 °C/W) | Enables high-power operation with minimal heatsinking when leads are extended ≥10 mm from body. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during board assembly or field service. |
| RoHS-compliant option (e3 suffix) | Meets EU Directive 2011/65/EU with annealed matte-tin plating; no lead or hazardous substances. |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback reference in isolated DC-DC converter secondary-side error amplifiers. IC Role / Device Role / Timing Role: Provides fixed 27 V reference for TL431 or optocoupler bias network. Use Value: Maintains ±10% output regulation across line/load variations and temperature drift up to +150 °C. |
Use Scenario: Clamping transient spikes on 24 V DC control bus in PLC backplanes. IC Role / Device Role / Timing Role: Shunts surge energy above 29.7 V to ground before downstream ICs experience overstress. Use Value: Withstands 120 A 8.3 ms surges without degradation, preserving system reliability. |
| Programmable Logic Controller (PLC) Input Conditioning | Automotive Body Control Module Reference |
Use Scenario: Biasing voltage divider for analog input scaling in 0–10 V sensor interface circuits. IC Role / Device Role / Timing Role: Sets upper rail of resistive divider to ensure consistent ADC full-scale mapping. Use Value: Delivers stable 27 V reference despite ambient swings from –40 °C to +85 °C in enclosure. |
Use Scenario: Generating regulated 27 V supply for CAN transceiver bias in 12 V vehicle systems. IC Role / Device Role / Timing Role: Acts as shunt regulator feeding isolated DC-DC stage powering CAN PHY. Use Value: Supports operation down to –40 °C and up to +125 °C junction temperature per automotive thermal profile. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5361B/TR12 | ±5% tolerance (25.65–28.35 V), same VZ nominal, IZM = 120 mA, ZZ = 5.0 Ω | Narrower voltage spread improves closed-loop stability in precision feedback paths. | Select when tighter regulation tolerance is required without changing layout or thermal design. |
| MMBZ5265B (SOT-23) | 27 V ±5%, 0.5 W rating, surface-mount, IZM = 19 mA, ZZ = 35 Ω | Limited power handling; suitable only for low-current bias/reference, not power regulation. | Choose for space-constrained PCBs where 5 W dissipation is unnecessary and thermal mass is limited. |
Compared with 1N5361A/TR12, the 1N5361B/TR12 offers improved voltage accuracy at identical power and thermal capability, while MMBZ5265B trades power and robustness for miniaturization-making it unsuitable for primary regulation but viable for signal-level referencing.
Availability
1N5361A/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and programmable logic controller input conditioning requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N5361A/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxA/B series was designed for ruggedized voltage regulation in harsh-environment power systems where wide temperature operation, surge resilience, and JEDEC-standard mechanical compatibility are critical.
FAQ
What is the Zener voltage tolerance of the 1N5361A/TR12?
The 1N5361A/TR12 has a Zener voltage tolerance of ±10%, meaning its actual regulation voltage falls between 24.3 V and 29.7 V at 50 mA test current and 25 °C lead temperature. This tolerance is designated by the "A" suffix per Microsemi's documentation and applies across the full operating temperature range of –65 °C to +150 °C.
Can the 1N5361A/TR12 be used without a heatsink?
The 1N5361A/TR12 can dissipate up to 5.0 W only when the lead temperature (TL) is maintained below 25 °C, typically requiring ≥10 mm lead length from the body and sufficient copper area. On a standard FR4 board (1 oz Cu, 4 mm² pad), its steady-state power drops to 1.47 W at 25 °C ambient-so heatsinking or thermal relief is essential for sustained 5 W operation.
What does the "TR12" suffix indicate in 1N5361A/TR12?
The "TR12" suffix indicates tape-and-reel packaging per EIA-296 standard, with 12,000 units per reel. This format supports automated SMT placement equipment and ensures consistent handling, moisture protection, and traceability-distinct from bulk or ammo-pack variants.
Is the 1N5361A/TR12 RoHS compliant?
Yes-the 1N5361A/TR12 is RoHS compliant when ordered with the "e3" suffix (e.g., 1N5361A/TR12e3). Standard production uses RoHS-compliant matte-tin plating per Microsemi's specification, meeting EU Directive 2011/65/EU without lead or other restricted substances.
How does the 1N5361A/TR12 compare to the 1N4752A in terms of power and regulation?
The 1N5361A/TR12 is a 5 W Zener with 27 V ±10% regulation and 5.0 Ω dynamic impedance, whereas the 1N4752A is a 1 W device rated at 27 V ±5% with higher impedance (~35 Ω). The 1N5361A/TR12 supports 120 mA continuous current and 120 A surge capability-making it suitable for higher-power regulation where the 1N4752A would thermally saturate.
1N5361A/TR12 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:
- ±10%
- 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
1N5361A/TR12 FAQ
1.How can I place an order for 1N5361A/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5361A/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 1N5361A/TR12 reliable?
The price and inventory of 1N5361A/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5361A/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5361A/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5361A/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5361A/TR12?
1N5361A/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5361A/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 1N5361A/TR12?
For technical support, including 1N5361A/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5361A/TR12 requirements.
6.How does Aetrix verify that 1N5361A/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5361A/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 1N5361A/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5361A/TR12?
All 1N5361A/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5361A/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 1N5361A/TR12 part is unused and in its original packaging.
Return procedure for 1N5361A/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5361A/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…
