My Inquiry
My Account
Microchip Technology 1PMT5949B/TR7
- Part No.:
- 1PMT5949B/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5949B/TR7.pdf
- Description:
- DIODE ZENER 100V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,969
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1PMT5949B/TR7 from Microsemi is a 100 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 250 Ω dynamic impedance at 3.7 mA test current and 3100 µA max reverse leakage at 76 V. It serves as a precision voltage reference or overvoltage clamp in compact DC-DC converter feedback loops.
For engineers reviewing the 1PMT5949B/TR7 datasheet, 1PMT5949B/TR7 pinout, 1PMT5949B/TR7 application, or 1PMT5949B/TR7 equivalent, key selection criteria include its 100 V nominal Zener voltage, 3.0 W thermal capability via metallic tab, DO-216 mechanical outline, ESD rating >16 kV HBM, and compatibility with automated SMT placement equipment.
Technical Context
This device operates as a two-terminal voltage-regulating diode with cathode designated by TAB 1. Its Zener voltage is specified at 100 V ±5% under 3.7 mA test current (IZT) at TL = 30°C, with knee current IZK = 0.25 mA and knee impedance ZZK = 3100 Ω.
Thermal performance is defined by junction-to-tab thermal resistance of 30°C/W, enabling 3.0 W power dissipation when TAB 1 is held at ≤60°C. Reverse leakage IR is capped at 1 µA up to 76 V, and forward voltage is 1.2 V at 200 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±5% - stable regulation point for feedback or clamping at nominal operating current |
| Test Current (IZT) | 3.7 mA - current at which VZ is guaranteed; defines minimum bias for regulation |
| Dynamic Impedance (ZZT) | 250 Ω - small-signal AC resistance affecting regulation accuracy under varying load |
| Max Reverse Leakage (IR) | 1 µA at 76 V - ensures low standby power loss in high-impedance bias networks |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - thermal limit set by metallic tab conduction, not ambient |
| ESD Rating | >16 kV HBM - robust handling during automated assembly without external protection |
| Thermal Resistance | 30°C/W junction-to-TAB1 - enables thermal design using tab as primary heat path |
Pinout & Package
Package: Powermite® (DO-216), molded surface-mount package with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat sink interface and electrical cathode connection; must be thermally anchored to PCB copper |
| Lead 2 | Anode | Standard anode terminal; soldered to PCB trace with standard reflow profile |
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 retention and direct thermal path from junction to PCB, supporting 3.0 W operation |
| DO-216 mechanical outline | Enables compatibility with standard SMT pick-and-place nozzles and tape-and-reel feeders (EIA-481) |
| ESD robustness | >16 kV per Human Body Model reduces need for external ESD protection in board-level design |
Applications
| DC-DC Converter Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Precision voltage reference establishing error amplifier threshold at secondary-side controller. Use Value: 100 V Zener voltage allows direct sensing of higher secondary rail voltages without resistive divider scaling. | Use Scenario: Protecting downstream ICs from transient overvoltage on 48 V telecom or industrial bus lines. IC Role / Device Role / Timing Role: Shunt clamping element diverting surge energy to ground when bus exceeds safe threshold. Use Value: 3.0 W power rating and 30°C/W thermal resistance enable sustained clamping without thermal runaway. |
| Programmable Voltage Reference | Current Source Bias |
Use Scenario: Setting precise bias points in analog sensor signal conditioning circuits requiring stable 100 V reference. IC Role / Device Role / Timing Role: Two-terminal passive reference providing fixed voltage drop across high-impedance node. Use Value: ±5% tolerance and low 250 Ω dynamic impedance ensure minimal drift under varying load currents. | Use Scenario: Establishing constant current for LED driver or laser diode bias in optical modules. IC Role / Device Role / Timing Role: Series-pass element defining current magnitude via voltage drop across external sense resistor. Use Value: Low reverse leakage (1 µA @ 76 V) prevents significant error in microamp-level bias currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5365B | Same 100 V nominal Zener, but in DO-204AL (DO-41) through-hole package; 5 W rating; no metallic tab | Requires through-hole assembly; unsuitable for space-constrained SMT designs | Select only if legacy through-hole layout or higher power margin is required |
| BZX84-C100 | 100 V Zener in SOT-23; 300 mW rating; 15 Ω dynamic impedance; no thermal tab | Limited to low-power biasing; cannot sustain 3.0 W clamping duty | Use only for signal-level referencing where thermal load is negligible |
Compared with 1N5365B and BZX84-C100, the 1PMT5949B/TR7 uniquely delivers 3.0 W surface-mount Zener regulation with direct tab thermal coupling-enabling high-reliability clamping in dense power electronics where through-hole or low-power SOT packages fall short.
Availability
1PMT5949B/TR7 is available at Aetrix Electronics and suitable for DC-DC converter feedback, overvoltage clamp, and programmable voltage reference applications requiring stable component supply, consistent thermal performance, and automated assembly compatibility.
Supply support for 1PMT5949B/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 family-including 1PMT5949B/TR7-is engineered for high-power density surface-mount voltage regulation in space-constrained, thermally demanding power systems.
FAQ
What is the Zener voltage tolerance for 1PMT5949B/TR7?
The 1PMT5949B/TR7 has a standard Zener voltage tolerance of ±5% at 100 V nominal, measured at 3.7 mA test current and TAB 1 temperature of 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D, respectively, but the base 1PMT5949B/TR7 uses ±5%.
How is thermal management handled for 1PMT5949B/TR7?
Thermal management for 1PMT5949B/TR7 relies on TAB 1 as the primary heat path: it features a full metallic bottom and integral locking tab that conducts heat directly to the PCB. With a junction-to-tab thermal resistance of 30°C/W, maintaining TAB 1 ≤60°C enables full 3.0 W power dissipation-no external heatsink needed.
Is 1PMT5949B/TR7 compatible with automated SMT assembly?
Yes, 1PMT5949B/TR7 is fully compatible with automated insertion equipment. Its Powermite® package conforms to EIA-481 tape-and-reel standards (7″ reel: 3,000 pcs; 13″ reel: 12,000 pcs), and its DO-216 outline and locking tab ensure reliable pickup, placement, and reflow soldering without flux entrapment.
What is the maximum reverse leakage current for 1PMT5949B/TR7?
The maximum reverse leakage current for 1PMT5949B/TR7 is 1 µA at 76 V (VR), specified at TL = 30°C. This low leakage supports accurate biasing in high-impedance circuits and minimizes standby power loss in clamping applications.
Does 1PMT5949B/TR7 have ESD protection built-in?
Yes, 1PMT5949B/TR7 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), verified per JEDEC JS-001. This eliminates the need for additional ESD protection circuitry during board handling and automated assembly, enhancing manufacturing yield and field reliability.
1PMT5949B/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):
- 100 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 250 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 76 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
1PMT5949B/TR7 FAQ
1.How can I place an order for 1PMT5949B/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5949B/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 1PMT5949B/TR7 reliable?
The price and inventory of 1PMT5949B/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5949B/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5949B/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5949B/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5949B/TR7?
1PMT5949B/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5949B/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 1PMT5949B/TR7?
For technical support, including 1PMT5949B/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5949B/TR7 requirements.
6.How does Aetrix verify that 1PMT5949B/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5949B/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 1PMT5949B/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5949B/TR7?
All 1PMT5949B/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5949B/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 1PMT5949B/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5949B/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5949B/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…
