My Inquiry
My Account
Microchip Technology 1PMT5931E3/TR13
- Part No.:
- 1PMT5931E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5931E3/TR13.pdf
- Description:
- DIODE ZENER 18V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,465
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1PMT5931E3/TR13 from Microsemi is a 18 V, ±5% tolerance surface-mount Zener diode in the Powermite® package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 12 Ω dynamic impedance at 20.8 mA test current and thermal resistance of 30°C/W junction-to-tab - used for precision voltage regulation and overvoltage protection in compact DC-DC converter feedback loops.
For engineers reviewing the 1PMT5931E3/TR13 datasheet, 1PMT5931E3/TR13 pinout, 1PMT5931E3/TR13 application, or 1PMT5931E3/TR13 equivalent, key selection criteria include Zener voltage tolerance, power derating above 60°C, reverse leakage at 13.7 V, knee current behavior at 0.25 mA, and compatibility with EIA-481 tape-and-reel automated placement.
Technical Context
This Zener diode operates as a two-terminal voltage reference device with cathode designated by TAB 1, requiring no external biasing circuitry. Its full metallic bottom and integral heat sink locking tab enable direct thermal conduction to PCB copper, supporting stable regulation under transient load conditions.
The device exhibits 650 µA maximum reverse leakage at VR = 13.7 V and maintains tight voltage regulation across its specified 20.8 mA test current, with dynamic impedance measured using 60 Hz RMS AC superimposed at 10% of IZT per Micro Note 202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18 V ±5% at IZT = 20.8 mA, TL = 30°C - defines nominal regulation point with production tolerance band |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC power handling before thermal shutdown |
| Dynamic Impedance (ZZT) | 12 Ω at IZT = 20.8 mA - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | ≤650 µA at VR = 13.7 V - limits standby current in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies temperature rise per watt dissipated into PCB copper |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter regulated region with ≤10% voltage deviation |
| ESD Rating | >16 kV HBM - ensures robustness during automated handling and board assembly |
Pinout & Package
Package: Powermite® surface-mount molded case with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1; DO-216 outline; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal path and electrical cathode connection; must be soldered to copper pour for rated power dissipation |
| Lead 2 | Anode | Standard anode terminal; mounted opposite TAB 1; requires standard SMT pad layout per DO-216 mechanical drawing |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term solder joint reliability |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path to PCB copper |
| ESD rating >16 kV HBM | Enables safe handling in uncontrolled ESD environments without additional protection circuitry |
| Compatible with automatic insertion | Designed for pick-and-place compatibility with EIA-481 tape-and-reel packaging (13-inch reel: 12,000 pcs) |
Applications
| DC-DC Converter Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-boost converters where space-constrained PCBs limit use of through-hole Zeners. IC Role / Device Role / Timing Role: Precision voltage reference in optocoupler feedback network, setting primary-side regulation threshold. Use Value: 18 V Zener point enables stable 12–15 V rail regulation with ±5% tolerance and low dynamic impedance for minimal load-induced drift. | Use Scenario: Protecting microcontroller I/O pins or analog sensor inputs from transient overvoltage events exceeding 13.7 V. IC Role / Device Role / Timing Role: Shunt clamping element that conducts above breakdown voltage to divert surge current away from sensitive nodes. Use Value: 650 µA IR at 13.7 V ensures negligible loading on protected circuits during normal operation while triggering reliably at 18 V. |
| Low-Power Reference Supply | Industrial Sensor Biasing |
Use Scenario: Generating stable 18 V bias for op-amp rails or ADC references in battery-powered instrumentation. IC Role / Device Role / Timing Role: Primary voltage reference source delivering regulated DC with minimal quiescent current draw. Use Value: 0.25 mA knee current allows functional regulation even at ultra-low operating currents, extending battery life. | Use Scenario: Providing excitation voltage to resistive temperature detectors (RTDs) or strain gauges in factory automation modules. IC Role / Device Role / Timing Role: Stable excitation source maintaining constant current through sensing elements despite supply ripple. Use Value: 30°C/W thermal resistance enables stable voltage output across ambient temperatures from –55°C to +150°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5931B | Same 18 V Zener voltage, but in DO-41 through-hole package; higher thermal resistance (~65°C/W); no metallic bottom or locking tab | Requires manual or wave-solder assembly; unsuitable for high-density SMT layouts or automated optical inspection | Select when legacy through-hole design or prototyping with breadboards is required |
| BZX55C18 | 18 V Zener, ±5% tolerance, 500 mW rating in DO-35; 10× lower power capability; 100 Ω typical ZZT | Limited to low-power signal-level clamping; cannot replace 1PMT5931E3/TR13 in 3 W regulation roles | Select only for non-power-critical bias or reference functions where size and cost outweigh thermal performance |
Compared with 1N5931B and BZX55C18, the 1PMT5931E3/TR13 delivers 3× higher power density, 50% lower dynamic impedance, and integrated thermal management - making it the sole option for space-constrained, thermally demanding SMT voltage regulation.
Availability
1PMT5931E3/TR13 is available at Aetrix Electronics and suitable for DC-DC converter feedback, overvoltage clamp, and low-power reference supply applications requiring stable component supply, consistent parametric performance, and EIA-481 tape-and-reel compatibility for high-volume SMT production.
Supply support for 1PMT5931E3/TR13 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 radiation-hardened components for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was designed specifically for surface-mount power regulation in space-constrained, thermally demanding environments - emphasizing thermal efficiency, automated assembly compatibility, and ruggedized packaging.
FAQ
What is the Zener voltage tolerance for 1PMT5931E3/TR13?
The 1PMT5931E3/TR13 has a standard Zener voltage tolerance of ±5% at 18 V, measured at 20.8 mA test current and TAB 1 temperature of 30°C. Tighter tolerances (±2% with suffix C, ±1% with suffix D) are available but not applicable to this specific E3/TR13 variant.
How is thermal performance defined for 1PMT5931E3/TR13?
The 1PMT5931E3/TR13 has a junction-to-TAB 1 thermal resistance of 30°C/W. This means each watt dissipated raises the junction temperature 30°C above the tab temperature. Full 3.0 W rating applies only when TAB 1 is maintained at ≤60°C - requiring adequate PCB copper area for heat spreading.
What does the 'TR13' suffix indicate in 1PMT5931E3/TR13?
The 'TR13' suffix denotes tape-and-reel packaging per EIA-481 standard on a 13-inch reel containing 12,000 units. The 'E3' indicates compliance with JEDEC Level 3 moisture sensitivity, requiring bake-out prior to reflow if exposed beyond floor life - critical for reliable SMT assembly of the 1PMT5931E3/TR13.
Can 1PMT5931E3/TR13 be used in place of through-hole Zeners like 1N5931B?
No - the 1PMT5931E3/TR13 is not a drop-in replacement for 1N5931B due to different packages (Powermite® vs. DO-41), thermal paths, and mounting requirements. While both have 18 V Zener voltage, the 1PMT5931E3/TR13 requires SMT footprint and thermal pad design, whereas 1N5931B uses axial leads and wave-solder processes.
What is the maximum reverse leakage current for 1PMT5931E3/TR13 at 13.7 V?
The 1PMT5931E3/TR13 has a maximum reverse leakage current of 650 µA at VR = 13.7 V and TL = 30°C. This value is critical for low-power bias networks, as it defines the upper bound of current drawn from the source before breakdown - directly impacting battery life and signal integrity in precision analog circuits.
1PMT5931E3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 18 V
- Tolerance:
- ±20%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 12 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 13.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-216AA
1PMT5931E3/TR13 FAQ
1.How can I place an order for 1PMT5931E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5931E3/TR13 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 1PMT5931E3/TR13 reliable?
The price and inventory of 1PMT5931E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5931E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5931E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5931E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5931E3/TR13?
1PMT5931E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5931E3/TR13 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 1PMT5931E3/TR13?
For technical support, including 1PMT5931E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5931E3/TR13 requirements.
6.How does Aetrix verify that 1PMT5931E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5931E3/TR13 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 1PMT5931E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5931E3/TR13?
All 1PMT5931E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5931E3/TR13, 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 1PMT5931E3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5931E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5931E3/TR13 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…
