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Microchip Technology 1PMT5949A/TR13
- Part No.:
- 1PMT5949A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5949A/TR13.pdf
- Description:
- DIODE ZENER 100V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,783
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Product details
Overview
1PMT5949A/TR13 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 1PMT5949A/TR13 datasheet, 1PMT5949A/TR13 pinout, 1PMT5949A/TR13 application, or 1PMT5949A/TR13 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 Zener diode operates in reverse breakdown mode to maintain stable voltage under varying load conditions. Its Powermite® package integrates a full metallic bottom and locking tab that directly conducts heat from the junction to the PCB pad, achieving 30°C/W thermal resistance from junction to TAB 1.
The device exhibits low knee impedance (0.25 Ω) and tight regulation at IZK = 1 mA, supporting reliable clamping even at low-current transients. Reverse leakage remains ≤3100 µA up to 76 V, ensuring minimal standby power loss in high-impedance bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±5% at IZT = 3.7 mA - defines precise clamping threshold for 12 V–48 V system protection circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables sustained operation without external heatsink in compact industrial PCBs |
| Dynamic Impedance (ZZT) | 250 Ω at IZT = 3.7 mA - ensures <±0.25 V deviation across ±10% current variation near regulation point |
| Reverse Leakage (IR) | ≤3100 µA at VR = 76 V - minimizes quiescent current in always-on monitoring circuits |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - allows direct thermal coupling to copper pour for passive cooling |
| ESD Rating | >16 kV per HBM - provides robust handling during automated assembly and field deployment |
| Knee Impedance (ZZK) | 0.25 Ω at IZK = 1 mA - supports stable regulation down to microamp-level standby currents |
Pinout & Package
Package: Powermite® (DO-216), molded surface-mount package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical cathode connection; must be soldered to ≥100 mm² copper area for rated 3.0 W dissipation |
| Lead 2 | Anode | Standard anode terminal; routed on PCB with minimal trace length to reduce parasitic inductance in transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability in high-humidity environments |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB, enabling 3.0 W operation in 3.0×2.5 mm footprint |
| Automated insertion compatibility | DO-216 outline and tape-and-reel packaging (EIA-481, 13″ reel: 12,000 pcs) support high-speed pick-and-place at >25,000 UPH |
| Low reverse leakage | ≤3100 µA at 76 V ensures <10 µW standby power draw in battery-backed sensor nodes |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module Clamping |
|---|---|
Use Scenario: Clamp transient spikes on 24 V CAN bus power rail during load dump events. IC Role / Device Role / Timing Role: Zener clamping diode placed between VCC and GND, conducting above 100 V to shunt surge energy. Use Value: Withstands 3.0 W peak pulse power without derating, reducing need for TVS arrays in cost-sensitive BOMs. | Use Scenario: Stabilize reference voltage for analog sensor signal conditioning in ambient temperature range −40°C to +125°C. IC Role / Device Role / Timing Role: Precision 100 V Zener used in resistive divider network to generate stable bias for op-amp input stages. Use Value: ±5% tolerance and 30°C/W thermal resistance ensure <±0.5% output drift over full operating temperature range. |
| Programmable Logic Controller Input Protection | Medical Equipment Overvoltage Detection |
Use Scenario: Protect 24 V digital input channels from accidental 48 V miswiring or ESD events. IC Role / Device Role / Timing Role: Front-end Zener limiter in optocoupler input stage, clamping fault voltage before current-limiting resistor. Use Value: >16 kV HBM ESD rating eliminates need for additional ESD suppressors in Class I medical-rated enclosures. | Use Scenario: Monitor high-voltage DC bus (e.g., 80–100 V) in portable imaging devices for overvoltage alarm triggering. IC Role / Device Role / Timing Role: Zener-based comparator reference in isolated voltage monitor circuit feeding microcontroller ADC. Use Value: Tight 0.25 Ω knee impedance ensures accurate trip-point detection at sub-mA sensing currents, critical for low-power battery operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5949BRLG | Same 100 V/3.0 W rating but in DO-41 axial package; no metallic tab; 65°C/W junction-to-ambient | Requires through-hole mounting and external heatsinking; unsuitable for high-density SMT layouts | Select only when legacy through-hole design or manual assembly is required |
| BZX84-C100LT1G | 100 V/300 mW SOT-23 package; 10× lower power; 600 Ω ZZT; no metallic thermal path | Limited to low-energy clamping; cannot sustain 3.0 W pulses or continuous regulation | Use only in signal-level protection where power dissipation <300 mW |
Compared with 1N5949BRLG and BZX84-C100LT1G, the 1PMT5949A/TR13 uniquely delivers 3.0 W surface-mount Zener regulation with integrated thermal management-enabling compact, high-reliability designs where power density and automated assembly are mandatory.
Availability
1PMT5949A/TR13 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control module clamping, and programmable logic controller input protection requiring stable component supply and full traceability.
Supply support for 1PMT5949A/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 semiconductor company specializing in high-reliability analog, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was engineered for high-power-density surface-mount voltage regulation in space-constrained, thermally demanding applications such as motor drives and power conversion systems.
FAQ
What is the maximum continuous power dissipation for 1PMT5949A/TR13?
The 1PMT5949A/TR13 is rated for 3.0 W DC power dissipation when TAB 1 is maintained at 60°C. This requires adequate PCB copper area (≥100 mm²) and airflow; derating applies above 60°C tab temperature per the thermal resistance of 30°C/W specified in the MSC0995 datasheet.
Does 1PMT5949A/TR13 have a defined polarity marking, and how is it identified?
Yes, 1PMT5949A/TR13 uses TAB 1 as the cathode terminal, clearly designated in the mechanical drawing and confirmed in the "Cathode designated by TAB 1" specification. The anode is Lead 2, and polarity must be observed during PCB layout to ensure proper reverse-bias operation in Zener regulation mode.
What is the Zener test current (IZT) and corresponding dynamic impedance for 1PMT5949A/TR13?
The 1PMT5949A/TR13 has a Zener test current IZT of 3.7 mA, at which its dynamic impedance ZZT is 250 Ω. This value is measured using a 60 Hz RMS AC current equal to 10% of IZT, per Note 2 in the MSC0995 datasheet, and defines small-signal regulation performance near the nominal 100 V breakdown point.
Is 1PMT5949A/TR13 compatible with lead-free reflow processes?
Yes, 1PMT5949A/TR13 is qualified for standard lead-free reflow profiles including JEDEC J-STD-020, with a maximum peak temperature of 260°C. Its molded Powermite® package and metallic tab withstand thermal cycling without delamination or solder joint integrity loss, as verified in Microsemi's qualification reports.
What tolerance options are available for 1PMT5949A/TR13, and how are they marked?
The base 1PMT5949A/TR13 carries ±5% Zener voltage tolerance. Tighter tolerances are available as 1PMT5949C/TR13 (±2%) and 1PMT5949D/TR13 (±1%), with suffixes 'C' and 'D' reflected in both part number and device marking per Note 1 in the MSC0995 datasheet.
1PMT5949A/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):
- 100 V
- Tolerance:
- ±10%
- 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
1PMT5949A/TR13 FAQ
1.How can I place an order for 1PMT5949A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5949A/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 1PMT5949A/TR13 reliable?
The price and inventory of 1PMT5949A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5949A/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5949A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5949A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5949A/TR13?
1PMT5949A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5949A/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 1PMT5949A/TR13?
For technical support, including 1PMT5949A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5949A/TR13 requirements.
6.How does Aetrix verify that 1PMT5949A/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5949A/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 1PMT5949A/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5949A/TR13?
All 1PMT5949A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5949A/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 1PMT5949A/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5949A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5949A/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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