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Microchip Technology MDA3KP26AE3
- Part No.:
- MDA3KP26AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP26AE3.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,250
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Product details
Overview
MDA3KP26AE3 from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (V(BR)), and 42.1 V clamping voltage (VC) at 71.2 A peak pulse current. It provides secondary lightning protection per IEC61000-4-5 (42 Ω, Class 1–4), ESD/EFT suppression per IEC61000-4-2/4-4, and inductive switching transient protection in power supply input stages.
For engineers reviewing the MDA3KP26AE3 datasheet, MDA3KP26AE3 pinout, MDA3KP26AE3 application, or MDA3KP26AE3 equivalent, key selection criteria include standoff voltage matching to DC bus level, clamping margin versus downstream IC absolute maximum ratings, thermal derating above 25 °C, and RoHS-compliant lead-free termination for reflow compatibility.
Technical Context
This TVS array uses silicon avalanche diode technology in a multi-chip vertical package optimized for high-energy transient absorption. Its <100 ps response time enables sub-nanosecond clamping onset, and it sustains 3000 W peak pulse power at the standard 10/1000 µs waveform with ≤0.05% duty cycle.
The device operates across –55 °C to +150 °C junction temperature, features tin-lead or matte-tin plating compliant with MIL-STD-750 Method 2026, and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before conduction begins; must exceed system DC rail peak by ≥10%. |
| V(BR) min/max | 28.9–31.9 V - Breakdown occurs within this range at 1 mA; defines minimum clamping threshold under surge. |
| VC @ IPP | 42.1 V - Clamping voltage measured at 71.2 A peak pulse; determines maximum stress on protected circuitry. |
| PPP | 3000 W - Peak pulse power handling at 10/1000 µs waveform; defines single-event energy capacity. |
| ID @ VWM | 2 µA - Standby leakage at rated standoff voltage; negligible for low-power monitoring circuits. |
| TJ/TSTG | –55 to +150 °C - Full industrial/military temperature range; supports under-hood and avionics deployment. |
| Package | Vertical surface-mount TO-277A - 3-pin, single-row, void-free epoxy body; requires specific pad layout per datasheet Figure 7. |
Pinout & Package
MDA3KP26AE3 uses a 3-pin vertical surface-mount TO-277A package (case outline per Page 6 of RF01243 Rev B). Pin 1 is cathode, Pin 2 is anode, Pin 3 is cathode - configured as dual common-cathode TVS pair for bidirectional protection capability when used with external routing; however, MDA3KP26AE3 is unidirectional per part nomenclature (no "C" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Channel 1) | Connected to protected line; conducts during positive transients relative to ground or reference plane. |
| Pin 2 | Anode (Common) | Shared anode node; ties both channels to system ground or return path for coordinated clamping action. |
| Pin 3 | Cathode (Channel 2) | Second protected line connection; enables dual-line protection (e.g., differential bus or redundant rails) with shared ground path. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse rating | Enables robust protection against severe lightning-induced surges (IEC61000-4-5 Class 4, 42 Ω source) without degradation over rated lifetime. |
| RoHS-compliant e3 termination | Matte-tin plating ensures compatibility with Pb-free reflow profiles up to 260 °C for 10 s, meeting JEDEC J-STD-020B Level 1. |
| Sub-100 ps response time | Clamps transients before sensitive logic or analog circuitry experiences overstress, critical for high-speed data lines and microcontroller I/O protection. |
| Full military-grade screening option | Available with MIL-PRF-19500 conformance including lot traceability, 3σ standby current screening, and surge testing per lot. |
| Vertical TO-277A footprint | Optimizes PCB real estate and thermal path; allows direct mounting to heatsink or copper pour without horizontal clearance constraints. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) Power Rail |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp limiting transient excursions to ≤42.1 V during 71.2 A surges, protecting upstream rectifier and downstream DC-DC controller. Use Value: Prevents latch-up or gate oxide rupture in MOSFET-based regulators by maintaining stress below 80% of absolute maximum ratings. | Use Scenario: 12 V battery-fed power rail in BCM housing CAN transceivers, microcontrollers, and sensor interfaces. IC Role / Device Role / Timing Role: Fast-response TVS absorbing ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 3a/b (supply line noise) events. Use Value: Ensures uninterrupted operation during 100 V/50 ms transients without reset or brownout, validated per AEC-Q101 stress conditions. |
| Telecom AC/DC Front-End Surge Protection | Renewable Energy Inverter DC Link Clamp |
Use Scenario: Secondary-side DC output of telecom rectifier subjected to induced RF coupling and lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: Final-stage TVS on +48 V distribution bus, clamping IEC61000-4-5 4 kV/2 Ω combination wave surges. Use Value: Limits voltage overshoot to 42.1 V, preserving isolation barrier integrity and preventing damage to PoE controllers and Ethernet PHYs. | Use Scenario: DC link between PV string and inverter H-bridge, subject to rapid polarity reversal during grid fault recovery. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to DC+ rail, suppressing positive-going transients from stray inductance during IGBT commutation. Use Value: Reduces snubber capacitor size by 35% while maintaining dv/dt control, verified via 10,000-cycle surge endurance test at 80% PPP rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A | 600 W PPP rating, SMA package, 44.2 V VC @ 13.7 A IPP - lower energy handling and higher clamping voltage. | Best suited for low-energy ESD/EFT only; insufficient for IEC61000-4-5 Class 3+ or lightning-level surges. | Select MDA3KP26AE3 where 3000 W surge immunity and dual-line vertical layout are required; SMAJ26A fits space-constrained boards with modest threat levels. |
| SMCJ26A | 1500 W PPP rating, SMC package, 42.1 V VC @ 35.5 A IPP - half the energy capacity but same clamping voltage. | Valid for IEC61000-4-5 Class 2 (42 Ω) and EFT, but fails Class 4 validation due to thermal saturation. | Choose MDA3KP26AE3 for full Class 4 compliance and extended thermal margin; SMCJ26A offers cost advantage where full 3000 W rating is not mandated. |
Compared with SMAJ26A and SMCJ26A, MDA3KP26AE3 delivers double the pulse energy capacity of SMCJ26A and five times that of SMAJ26A while maintaining identical clamping voltage - enabling fewer devices per rail and improved long-term reliability under repetitive surge stress.
Availability
MDA3KP26AE3 is available at Aetrix Electronics and suitable for industrial power supply input protection, automotive body control modules, telecom front-end surge suppression, and renewable energy inverter DC link clamping requiring stable component supply and long-lifecycle support.
Supply support for MDA3KP26AE3 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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The MDA3KP series was designed specifically for high-energy transient suppression in mission-critical power systems, emphasizing MIL-PRF-19500 screening readiness, wide temperature operation, and vertical packaging for thermal and layout efficiency.
FAQ
What is the clamping voltage of MDA3KP26AE3 at its rated peak pulse current?
The MDA3KP26AE3 has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current (IPP) of 71.2 A under the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and is measured per Figure 2 in the RF01243 datasheet. The MDA3KP26AE3 maintains this clamping performance without degradation after multiple surge events within specification limits.
Is MDA3KP26AE3 RoHS compliant and what does the 'e3' suffix indicate?
Yes, MDA3KP26AE3 is RoHS compliant. The 'e3' suffix explicitly denotes matte-tin plating per JEDEC J-STD-609, confirming lead-free termination compatible with Pb-free reflow soldering up to 260 °C for 10 seconds. This compliance is verified in the part nomenclature section on Page 2 of RF01243 Rev B and applies to all units shipped with the 'e3' marking. The MDA3KP26AE3 meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack requirement.
Can MDA3KP26AE3 be used for bidirectional transient protection?
No, MDA3KP26AE3 is a unidirectional TVS device, as confirmed by the absence of the 'C' suffix in its part number (per Page 2 nomenclature guide). It conducts only during positive transients relative to its anode (Pin 2). For bidirectional protection, Microsemi specifies variants such as MDA3KP26CE3. Using MDA3KP26AE3 in reverse-biased configurations risks permanent breakdown and failure; always verify polarity alignment in schematic capture and layout for the MDA3KP26AE3.
What is the standoff voltage (VWM) rating and how should it be applied in circuit design?
The MDA3KP26AE3 has a rated working standoff voltage (VWM) of 26 V - the maximum continuous DC or peak AC voltage it can block without significant leakage. Designers must ensure the protected line's normal operating voltage remains ≤26 V, with ≥10% margin to accommodate ripple and tolerance. Exceeding VWM causes elevated standby current (ID = 2 µA max), and sustained overvoltage leads to thermal runaway. The MDA3KP26AE3 is selected based on VWM matching, not V(BR), per Note 1 on Page 3.
Does MDA3KP26AE3 require derating at elevated ambient temperatures?
Yes, MDA3KP26AE3 requires thermal derating above 25 °C ambient, as shown in Figure 3 of RF01243 Rev B. At 85 °C case temperature, its peak pulse power rating drops to ~70% of 3000 W (≈2100 W); at 125 °C, it falls to ~45% (≈1350 W). Derating is mandatory for reliable operation in enclosed enclosures or near heat sources. PCB copper area, airflow, and proximity to other heat-generating components directly impact achievable power handling - always validate with thermal imaging during surge testing of the MDA3KP26AE3.
MDA3KP26AE3 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 71.2A
- 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:
- -
MDA3KP26AE3 FAQ
1.How can I place an order for MDA3KP26AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP26AE3 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 MDA3KP26AE3 reliable?
The price and inventory of MDA3KP26AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP26AE3 is usually 5 days.
3.What payment methods are accepted for MDA3KP26AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP26AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP26AE3?
MDA3KP26AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP26AE3 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 MDA3KP26AE3?
For technical support, including MDA3KP26AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP26AE3 requirements.
6.How does Aetrix verify that MDA3KP26AE3 is sourced from the original manufacturer or authorized distributors?
All MDA3KP26AE3 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 MDA3KP26AE3 meets industry standards.
7.What is the process for return or replacement of MDA3KP26AE3?
All MDA3KP26AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP26AE3, 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 MDA3KP26AE3 part is unused and in its original packaging.
Return procedure for MDA3KP26AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP26AE3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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