My Inquiry
My Account
Microchip Technology 1PMT5934E3/TR7
- Part No.:
- 1PMT5934E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5934E3/TR7.pdf
- Description:
- DIODE ZENER 24V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,908
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1PMT5934E3/TR7 from Microsemi is a 24 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 19 Ω dynamic impedance at 15.6 mA test current and 18.2 mA maximum Zener current. It serves as a precision voltage reference or overvoltage clamp in DC power rails and regulator feedback networks.
For engineers reviewing the 1PMT5934E3/TR7 datasheet, 1PMT5934E3/TR7 pinout, 1PMT5934E3/TR7 application, or 1PMT5934E3/TR7 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), reverse leakage (<1 µA at 18.2 V), and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This device operates as a two-terminal voltage-regulating diode with sharp reverse-breakdown characteristics. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and mechanical stability during reflow or wave soldering.
Designed for stable operation across –55°C to +150°C junction temperature range, it delivers low reverse leakage (≤1 µA at VR = 18.2 V) and tight dynamic impedance control (19 Ω at IZT = 15.6 mA), enabling reliable regulation in compact power management circuits without external heat sinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 24 V ±5% - defines regulated output voltage under nominal bias conditions |
| Test Current | 15.6 mA - standardized current at which VZ is measured; sets operating point for regulation |
| Dynamic Impedance | 19 Ω - determines voltage deviation under load transients; lower value improves regulation accuracy |
| Max Power Dissipation | 3.0 W at TAB 1 = 60°C - limits continuous power handling; requires thermal pad design for full rating |
| Thermal Resistance | 30°C/W junction-to-TAB - quantifies thermal path efficiency; guides PCB copper area requirements |
| ESD Rating | >16 kV HBM - ensures robustness against human-body-model electrostatic discharge during handling |
| Reverse Leakage | ≤1 µA at 18.2 V - guarantees minimal quiescent current in standby or sensing applications |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral locking tab; cathode designated by TAB 1; compatible with EIA-481 tape-and-reel (7″ reel, 3,000 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and electrical cathode connection; must be soldered to thermal pad |
| Lead 2 | Anode | Standard anode connection; mounted opposite TAB 1 on DO-216 outline |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal path from junction to PCB copper, reducing thermal resistance to 30°C/W |
| Automated insertion compatibility | Enables high-yield placement using standard SMT pick-and-place equipment per EIA-481 tape specifications |
| Low reverse leakage | ≤1 µA at 18.2 V enables use in ultra-low-power monitoring and battery-backed circuits |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback or buck converter secondary-side regulation. IC Role / Device Role / Timing Role: Zener reference element providing precise 24 V threshold for optocoupler or TL431-based error amplification. Use Value: Maintains ±5% output voltage accuracy across temperature and line variations due to tight VZ tolerance and low ZZT. | Use Scenario: Clamping transient surges on 24 V industrial I/O lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy to ground before downstream logic ICs are damaged. Use Value: Withstands 3.0 W peak pulse power and >16 kV ESD, enabling robust field deployment without additional TVS stages. |
| Programmable Logic Controller Input | Automotive Body Control Module |
Use Scenario: Level-shifting and voltage limiting for 24 V sensor inputs interfacing with 3.3 V microcontroller ADCs. IC Role / Device Role / Timing Role: Signal conditioning diode protecting input pins from overvoltage while preserving signal fidelity. Use Value: Low 1 µA leakage prevents loading of high-impedance sensor sources; DO-216 footprint supports dense PLC board layouts. | Use Scenario: Providing stable 24 V reference for LIN bus transceiver biasing in vehicle door modules. IC Role / Device Role / Timing Role: Precision voltage reference ensuring consistent LIN signal amplitude and timing margins. Use Value: Operates reliably from –40°C to +125°C ambient with <1% VZ drift, meeting AEC-Q101 stress requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5934B | Same 24 V Zener voltage and ±5% tolerance, but in DO-41 axial package; higher thermal resistance (~65°C/W) | Requires through-hole mounting and manual assembly; unsuitable for high-density SMT production | Select only when legacy through-hole design or prototyping without reflow capability is required |
| BZX84-C24 | SOT-23 package; 24 V ±5%, but rated for only 300 mW; dynamic impedance ~90 Ω at 5 mA | Limited to low-power signal-level clamping; cannot replace 1PMT5934E3/TR7 in 3 W power rail applications | Use only in space-constrained, sub-100 mW bias/reference roles where thermal performance is non-critical |
Compared with 1N5934B and BZX84-C24, the 1PMT5934E3/TR7 uniquely combines 3.0 W power handling, 30°C/W thermal resistance, and SMT manufacturability-making it the sole option for thermally demanding, high-volume 24 V regulation in industrial and automotive PCBs.
Availability
1PMT5934E3/TR7 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and programmable logic controller input conditioning requiring stable component supply and traceable sourcing.
Supply support for 1PMT5934E3/TR7 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 engineered for high-power density voltage regulation in space-constrained, thermally aggressive environments-targeting industrial automation, transportation, and ruggedized power systems.
FAQ
What is the Zener voltage tolerance for 1PMT5934E3/TR7?
The 1PMT5934E3/TR7 has a nominal Zener voltage of 24 V with a standard tolerance of ±5%, as specified in the MSC0995 datasheet. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the base part number 1PMT5934E3/TR7 uses the ±5% grade. This tolerance applies under test conditions of IZT = 15.6 mA and TAB temperature = 30°C.
Can 1PMT5934E3/TR7 be used in automotive applications?
Yes, the 1PMT5934E3/TR7 is suitable for automotive body control modules and LIN bus reference applications due to its –55°C to +150°C junction temperature range, >16 kV HBM ESD rating, and stable 24 V regulation. While not AEC-Q101 certified as a standalone part, its construction and characterization align with automotive-grade thermal and reliability expectations when properly mounted on thermally enhanced PCBs.
What is the thermal resistance of 1PMT5934E3/TR7, and how does it affect layout?
The 1PMT5934E3/TR7 has a junction-to-TAB thermal resistance of 30°C/W. This means each watt of dissipated power raises the junction temperature by 30°C above the TAB temperature. To maintain safe operation at full 3.0 W rating, the TAB (cathode) must be soldered to a sufficiently large copper pour-typically ≥100 mm² of 2 oz copper-to hold TAB temperature ≤60°C per the datasheet derating curve.
Is 1PMT5934E3/TR7 compatible with lead-free reflow processes?
Yes, the 1PMT5934E3/TR7 Powermite® package is qualified for standard lead-free reflow profiles, including JEDEC J-STD-020-compliant peak temperatures up to 260°C. Its molded epoxy body and metallic bottom are designed to withstand multiple reflow cycles without delamination or solder wicking issues, provided the recommended EIA-481 tape-and-reel handling and stencil aperture guidelines are followed.
How does the locking tab on 1PMT5934E3/TR7 improve thermal performance?
The locking tab on the 1PMT5934E3/TR7 serves as both a mechanical anchor and primary thermal conduction path. By directly connecting the internal cathode structure to the exposed metal TAB 1, it reduces interfacial thermal resistance and enables efficient heat transfer from the silicon junction into the PCB copper. This design achieves the specified 30°C/W junction-to-TAB resistance-nearly half that of comparable DO-41 or SOT-23 Zeners-without requiring external heatsinks.
1PMT5934E3/TR7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±20%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 19 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 18.2 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
1PMT5934E3/TR7 FAQ
1.How can I place an order for 1PMT5934E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5934E3/TR7 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 1PMT5934E3/TR7 reliable?
The price and inventory of 1PMT5934E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5934E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5934E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5934E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5934E3/TR7?
1PMT5934E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5934E3/TR7 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 1PMT5934E3/TR7?
For technical support, including 1PMT5934E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5934E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5934E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5934E3/TR7 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 1PMT5934E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5934E3/TR7?
All 1PMT5934E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5934E3/TR7, 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 1PMT5934E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5934E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5934E3/TR7 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…
