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Microchip Technology 1PMT5949BE3/TR7
- Part No.:
- 1PMT5949BE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5949BE3/TR7.pdf
- Description:
- DIODE ZENER 100V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,805
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Product details
Overview
1PMT5949BE3/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 DC power rails of industrial control modules.
For engineers reviewing the 1PMT5949BE3/TR7 datasheet, 1PMT5949BE3/TR7 pinout, 1PMT5949BE3/TR7 application, or 1PMT5949BE3/TR7 equivalent, key selection criteria include its 100 V zener voltage, 3.0 W thermal capability with metallic-tab heat sinking, low knee impedance (≤400 Ω), ESD rating >16 kV HBM, and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified test current range. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction from junction to PCB via TAB 1, achieving 30°C/W junction-to-tab thermal resistance.
The device exhibits low reverse leakage (≤3100 µA at VR = 76 V) and stable dynamic impedance (250 Ω at IZT = 3.7 mA), enabling reliable clamping in transient-suppression circuits and stable reference generation where temperature drift and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±5% at IZT = 3.7 mA - defines precise clamping threshold for overvoltage protection |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient absorption without derating in compact layouts |
| Dynamic Impedance (ZZT) | 250 Ω at IZT = 3.7 mA - ensures minimal voltage shift under load variation in regulation circuits |
| Reverse Leakage (IR) | ≤3100 µA at VR = 76 V - guarantees low standby power loss in always-on protection paths |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - supports direct thermal coupling to copper pour or heatsink pad on PCB |
| ESD Rating | >16 kV per Human Body Model - provides robust handling immunity during SMT assembly and field operation |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral locking tab; cathode designated by TAB 1; weight ≈ 0.016 g; mechanical outline conforms to DO-216.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal; must be soldered to thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode connection; electrically isolated from TAB 1; used for circuit return path |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat sink locking tab | Enables direct thermal conduction from junction to PCB copper, reducing thermal resistance by >40% vs. standard SOD-123 |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving solder joint reliability and process yield |
| Automated insertion compatibility | Designed for EIA-481 tape-and-reel (7″/3000 pcs, 13″/12000 pcs), supporting high-speed pick-and-place |
| Low knee impedance | ≤400 Ω at IZK = 0.25 mA - ensures stable regulation even near breakdown onset |
Applications
| Industrial Power Supply Protection | Automotive ECUs |
|---|---|
Use Scenario: Clamping induced transients on 24 V DC bus lines in PLC backplanes and motor drive controllers. IC Role / Device Role / Timing Role: Zener diode acting as shunt overvoltage protector, absorbing surge energy up to 3.0 W peak. Use Value: Prevents damage to downstream regulators and microcontrollers during load dump events per ISO 7637-2 Pulse 5a. | Use Scenario: Voltage reference for analog sensor signal conditioning in engine control units. IC Role / Device Role / Timing Role: Stable 100 V reference source for ratiometric ADC biasing and fault detection thresholds. Use Value: Maintains <±1% output stability over −40°C to +125°C ambient due to tight VZ tolerance and low TCZ. |
| Telecom Line Card Protection | Medical Imaging Power Rails |
Use Scenario: Secondary overvoltage clamp on isolated 48 V telecom power feeds subject to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response Zener clamp placed after primary TVS, handling residual energy not absorbed upstream. Use Value: Delivers predictable 100 V clamping with ≤250 Ω dynamic impedance, minimizing voltage overshoot into sensitive PHY ICs. | Use Scenario: Precision voltage supervisor for high-voltage X-ray generator bias supplies. IC Role / Device Role / Timing Role: Reference element in window comparator circuits monitoring ±100 V rail integrity. Use Value: Guarantees fail-safe shutdown when rail deviates >±5% from nominal, meeting IEC 62304 Class C requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ100A | TVS diode (unidirectional), 100 V standoff, 1500 W peak pulse power, higher clamping voltage (137 V) | Designed for high-energy transient suppression (IEC 61000-4-5), not precision regulation | Select for surge-only protection; avoid where stable DC reference or low-impedance clamping is required |
| BZX84-C100 | SOT-23 Zener, 100 V ±5%, 300 mW power rating, 600 Ω ZZT at 5 mA | Limited thermal capacity; unsuitable for sustained 3 W dissipation or high-current clamping | Use only in low-power signal-level references; requires significant derating above 70°C ambient |
Compared with SMCJ100A and BZX84-C100, the 1PMT5949BE3/TR7 uniquely combines 3.0 W continuous dissipation, 250 Ω dynamic impedance, and DO-216-compatible thermal design-making it the only option among the three capable of both precision regulation and robust transient clamping in space-constrained industrial power stages.
Availability
1PMT5949BE3/TR7 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive ECU voltage supervision, and telecom line card transient suppression requiring stable component supply and full traceability.
Supply support for 1PMT5949BE3/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 series-including 1PMT5949BE3/TR7-is engineered for high-power surface-mount voltage regulation and transient suppression in harsh-environment power systems where thermal performance and assembly reliability are critical.
FAQ
What is the maximum continuous power dissipation for 1PMT5949BE3/TR7?
The 1PMT5949BE3/TR7 is rated for 3.0 W DC power dissipation when TAB 1 is maintained at 60°C. This rating assumes proper thermal design-specifically, soldering TAB 1 to a minimum 100 mm² copper area on the PCB. Derating is required above 60°C tab temperature per the device's 30°C/W thermal resistance specification.
How is cathode polarity identified on the 1PMT5949BE3/TR7 package?
The cathode of the 1PMT5949BE3/TR7 is designated by TAB 1-the large metallic tab on the package underside. This is confirmed in the MSC0995.PDF mechanical specifications and must be connected to the more positive node in reverse-bias operation. The anode is the smaller lead (Lead 2), electrically isolated from the tab.
Does 1PMT5949BE3/TR7 meet automotive AEC-Q200 stress testing requirements?
The 1PMT5949BE3/TR7 is not AEC-Q200 qualified. While it operates across −55°C to +150°C junction temperature and has >16 kV HBM ESD rating, Microsemi's official qualification data for this part does not include AEC-Q200 test reports. For automotive applications, validation per AEC-Q200 must be performed by the end customer or confirmed via Microchip's qualified automotive-grade equivalents.
What is the zener test current (IZT) and why is it important for 1PMT5949BE3/TR7?
The zener test current for 1PMT5949BE3/TR7 is 3.7 mA, defined in the electrical characteristics table. This current establishes the condition under which the 100 V ±5% zener voltage is guaranteed. Operating significantly above or below IZT alters VZ due to dynamic impedance and temperature effects-so stable regulation requires maintaining current near this value in reference designs.
Can 1PMT5949BE3/TR7 be used as a replacement for through-hole 1N5949B?
No-1PMT5949BE3/TR7 is not a drop-in replacement for 1N5949B. Although both share identical zener voltage (100 V) and tolerance, the 1PMT5949BE3/TR7 uses the surface-mount Powermite® (DO-216) package with TAB-1 cathode, while 1N5949B is axial-lead DO-41. PCB layout, thermal design, and assembly process differ fundamentally; no pin-to-pin or footprint compatibility exists.
1PMT5949BE3/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
1PMT5949BE3/TR7 FAQ
1.How can I place an order for 1PMT5949BE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5949BE3/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 1PMT5949BE3/TR7 reliable?
The price and inventory of 1PMT5949BE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5949BE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5949BE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5949BE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5949BE3/TR7?
1PMT5949BE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5949BE3/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 1PMT5949BE3/TR7?
For technical support, including 1PMT5949BE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5949BE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5949BE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5949BE3/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 1PMT5949BE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5949BE3/TR7?
All 1PMT5949BE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5949BE3/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 1PMT5949BE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5949BE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5949BE3/TR7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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