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Microchip Technology MXLDA3KP33A
- Part No.:
- MXLDA3KP33A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP33A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:8,143
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Product details
Overview
MXLDA3KP33A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array designed for high-reliability secondary lightning and ESD protection in DC power rails and signal lines. It features a 33 V standoff voltage (VWM), 36.7–40.6 V breakdown range (V(BR)), 53.3 V clamping voltage at 56.2 A peak pulse current, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the MXLDA3KP33A datasheet, MXLDA3KP33A pinout, MXLDA3KP33A application, or MXLDA3KP33A equivalent, this device is selected for robust surge immunity in telecom infrastructure, industrial control I/O, and automotive body electronics where fast response (<100 ps), low standby leakage (<2 µA), and MIL-PRF-19500 upscreening capability are critical design requirements.
Technical Context
The MXLDA3KP33A employs silicon avalanche diode technology optimized for sub-100 ps response time and stable clamping under 10/1000 µs surge waveforms. Its unidirectional polarity enables DC rail protection with cathode-anode orientation, and its thermoset epoxy package meets UL94V-0 flammability rating.
It delivers 3000 W peak pulse power at 25 °C with derating above 25 °C per Figure 3, supports 260 °C soldering per MIL-STD-750 Method 2026, and maintains <2 µA standby current at rated 33 V standoff-enabling low-power system compatibility without leakage-induced drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V maximum continuous reverse standoff voltage - sets upper limit of protected line's normal operating voltage |
| V(BR) min–max | 36.7–40.6 V at I(BR) = 1 mA - defines precise avalanche initiation threshold for predictable turn-on |
| VC @ IPP | 53.3 V clamping voltage at 56.2 A peak pulse - limits transient overvoltage seen by downstream ICs |
| IPP | 56.2 A peak impulse current (10/1000 µs) - quantifies maximum surge energy absorption capacity |
| ID @ VWM | <2 µA standby leakage at 33 V - ensures negligible power loss and no interference with high-impedance sensing |
| TJ Range | –55 °C to +150 °C operating junction temperature - supports deployment in harsh under-hood or industrial environments |
Pinout & Package
MXLDA3KP33A uses a 2-pin SMD package with void-free UL94V-0 thermosetting epoxy body. Pin 1 (cathode) is marked by a dot on top; polarity follows odd-numbered pins as cathodes per series nomenclature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts surge current to ground when V > V(BR) |
| Pin 2 | Anode | Connected to system ground reference; completes low-impedance path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Enables single-device protection against IEC61000-4-5 Class 3 surges (12 Ω source) on 33 V rails |
| <100 ps response time | Clamps ESD events (IEC61000-4-2) before sensitive logic or analog circuitry is damaged |
| MIL-PRF-19500 screening option | Supports high-reliability programs requiring lot traceability, burn-in, and parametric testing |
| UL94V-0 epoxy package | Provides flame-retardant mechanical integrity in enclosed industrial enclosures and telecom cabinets |
Applications
| Telecom Power Feeds | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Protection of -48 V DC power inputs in central office line cards against induced lightning surges and switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between feed rail and chassis ground to clamp positive-going transients only. Use Value: 53.3 V clamping ensures downstream DC-DC converters remain within absolute maximum ratings during 1 kA surge events. | Use Scenario: Input protection for 24 V digital input channels exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 10/1000 µs transients without degradation. Use Value: <2 µA leakage prevents false triggering of optocoupler-based input stages in low-current sensing applications. |
| Automotive Body Control Units | Medical Diagnostic Equipment Interfaces |
Use Scenario: CAN bus power line protection in BCM modules subjected to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail upstream of LDO regulators. Use Value: 3000 W rating sustains multiple 10/1000 µs pulses per ISO 7637-2 Pulse 5a without parameter shift. | Use Scenario: Isolated sensor interface protection in portable ultrasound units connected to external probes. IC Role / Device Role / Timing Role: Low-leakage TVS safeguarding precision ADC front-ends from ESD during probe attachment. Use Value: Sub-100 ps response prevents latch-up in 16-bit SAR ADCs during 8 kV contact discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A | 600 W rating, 5.0 mm × 6.2 mm SMA package, 53.3 V VC same but IPP = 11.8 A | Lower energy handling - suitable only for ESD/EFT, not secondary lightning | Select SMAJ33A only for cost-sensitive consumer-grade designs with verified <1 kA threat levels. |
| SMCJ33A | 1500 W rating, DO-214AB package, 53.3 V VC, IPP = 28.1 A, higher thermal mass than MXLDA3KP33A | Limited to Class 1–2 IEC61000-4-5; cannot meet Class 3 12 Ω surge requirement | Choose SMCJ33A where PCB space allows larger DO-214AB and full 3000 W is not required. |
Compared with SMAJ33A and SMCJ33A, MXLDA3KP33A provides double the surge energy capacity of SMCJ33A and five times that of SMAJ33A-making it the only option among the three qualified for sustained Class 3 secondary lightning protection per IEC61000-4-5 with 12 Ω source impedance.
Availability
MXLDA3KP33A is available at Aetrix Electronics and suitable for telecom power feeds, industrial PLC I/O modules, and automotive body control units requiring stable component supply with long-term lifecycle assurance.
Supply support for MXLDA3KP33A 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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs, RF solutions, and radiation-hardened components.
The MDA3KP series was developed for mission-critical surge protection in aerospace, defense, and industrial systems where MIL-PRF-19500 compliance and guaranteed 3000 W pulse handling are mandatory.
FAQ
What is the clamping voltage of the MXLDA3KP33A under maximum surge conditions?
The MXLDA3KP33A has a maximum clamping voltage (VC) of 53.3 V at 56.2 A peak pulse current under 10/1000 µs waveform conditions. This value is measured per Figure 2 in the official datasheet and represents the upper bound of voltage imposed on protected circuitry during worst-case surge events. The MXLDA3KP33A maintains this clamping performance across its full operating temperature range.
Is MXLDA3KP33A RoHS compliant?
Yes, MXLDA3KP33A is RoHS compliant, indicated by the "e3" suffix in its full marking per page 2 of the datasheet. The device uses annealed matte-tin plating on terminals and void-free thermosetting epoxy packaging, both meeting RoHS Directive 2011/65/EU requirements without lead or other restricted substances above threshold limits.
Can MXLDA3KP33A be used for bidirectional protection?
No, MXLDA3KP33A is unidirectional, as confirmed by its "A" suffix and absence of "C" in the part number. Bidirectional variants such as MXLDA3KP33CA exist in the same family but differ in internal construction and polarity behavior. Using MXLDA3KP33A on AC-coupled or bipolar signal lines would result in forward conduction during negative half-cycles and potential failure.
What is the maximum operating temperature for MXLDA3KP33A?
The MXLDA3KP33A has a specified junction and storage temperature range of –55 °C to +150 °C. Derating of peak pulse power begins above 25 °C per Figure 3 in the datasheet, with 50% power capability retained at +100 °C ambient. This makes MXLDA3KP33A suitable for under-hood automotive and high-temperature industrial deployments.
Does MXLDA3KP33A require dry pack moisture protection before reflow?
No, MXLDA3KP33A has IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it is not moisture-sensitive and requires no dry pack or baking prior to reflow soldering. The device's void-free thermoset epoxy body inherently prevents moisture ingress, enabling direct placement and standard 260 °C solder profile usage.
MXLDA3KP33A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 16-SMD, Gull Wing
- Series:
- MDA
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 56.2A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
MXLDA3KP33A FAQ
1.How can I place an order for MXLDA3KP33A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP33A 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 MXLDA3KP33A reliable?
The price and inventory of MXLDA3KP33A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP33A is usually 5 days.
3.What payment methods are accepted for MXLDA3KP33A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP33A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP33A?
MXLDA3KP33A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP33A 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 MXLDA3KP33A?
For technical support, including MXLDA3KP33A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP33A requirements.
6.How does Aetrix verify that MXLDA3KP33A is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP33A 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 MXLDA3KP33A meets industry standards.
7.What is the process for return or replacement of MXLDA3KP33A?
All MXLDA3KP33A units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP33A, 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 MXLDA3KP33A part is unused and in its original packaging.
Return procedure for MXLDA3KP33A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP33A Tags
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