My Inquiry
My Account
Microchip Technology MPLAD36KP26CAE3
- Part No.:
- MPLAD36KP26CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP26CAE3.pdf
- Description:
- TVS DIODE 26VWM 43VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,258
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPLAD36KP26CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤43.0 V at 838 A, and features a 26 V reverse standoff voltage (VWM), 28.9–31.9 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance.
For engineers reviewing the MPLAD36KP26CAE3 datasheet, MPLAD36KP26CAE3 pinout, MPLAD36KP26CAE3 application, or MPLAD36KP26CAE3 equivalent, key selection criteria include IEC 61000-4-5 Class 4 compliance with 42 Ω source impedance, RTCA DO-160F Waveform 4 Level 4 capability, and RoHS-compliant e3 termination plating - all validated for multi-stroke lightning protection in avionics and load-dump hardened systems.
Technical Context
This device operates as a silicon avalanche diode configured in bidirectional symmetry to clamp both positive and negative transients without polarity dependence. Its low RθJC (1.0 °C/W) enables effective heat transfer to PCB copper pads or heatsinks under repetitive surge conditions up to 0.05% duty cycle.
It meets secondary lightning protection per IEC 61000-4-5 across multiple source impedances (2 Ω, 12 Ω, 42 Ω) and satisfies RTCA DO-160F pin-injection requirements for Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs), with derating guidance provided in MicroNote 132 and 134.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains single-stroke lightning surges without failure under defined thermal mounting conditions |
| Reverse Standoff Voltage (VWM) | 26 V - maximum continuous DC or peak AC voltage the device blocks without conduction |
| Breakdown Voltage (V(BR)) | 28.9–31.9 V @ 5 mA - ensures reliable avalanche initiation above operating rail, with tight 10.4% tolerance |
| Max Clamping Voltage (VC) | 43.0 V @ 838 A - limits downstream voltage stress during worst-case surge, enabling 24 V system compatibility |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows direct thermal coupling to PCB ground plane or heatsink for cumulative heating management |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack or bake required prior to reflow, simplifying SMT assembly |
| RoHS Compliance | e3 marking - matte-tin plating compliant with EU RoHS Directive 2011/65/EU, lead-free and halogen-free |
Pinout & Package
Package: PLAD - void-free transfer-molded thermosetting epoxy case (UL94V-0), metal base cathode for thermal path, dimensions 12.32 × 10.54 × 5.08 mm (L × W × H). Mounting requires recommended pad layout (A = 11.94 mm, B = 5.85 mm) per datasheet Figure 7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface) | Transient current entry point (positive half-cycle) | Connects to protected line; forms symmetrical avalanche path with cathode during bidirectional clamping |
| Cathode (Metal Base) | Transient current return path & thermal interface | Must be soldered to large copper area or heatsink; serves as primary thermal conduction path (RθJC = 1.0 °C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC-coupled or floating DC lines without polarity concerns |
| 3σ lot norm screening on standby current (ID) | Ensures consistent leakage performance (<10 μA @ 26 V), critical for low-power always-on systems |
| RTCA DO-160F Waveform 4 Level 4 compliance | Validated for 6.4/69 μs pin injection surges up to 25°C ambient, supporting aircraft avionics certification |
| AEC-Q101 qualified | Meets stress test requirements for automotive electronics, including temperature cycling and HTRB |
| MIL-PRF-19500 upscreening option | Supports high-reliability screening levels (M, MA, MX, MXL) for defense and space applications |
Applications
| Avionics Power Distribution | Automotive Load-Dump Protection |
|---|---|
Use Scenario: 28 V DC distribution bus in commercial aircraft, exposed to DO-160 Section 22 lightning-induced transients. IC Role / Device Role / Timing Role: Primary transient suppression device placed at bus entry point before DC-DC converters and flight control modules. Use Value: Withstands multi-stroke lightning per RTCA DO-160F Waveform 4 Level 4 and clamps to ≤43.0 V, preserving 28 V system integrity. |
Use Scenario: 24 V battery-fed ECU input in heavy-duty vehicles subjected to ISO 7637-2 Load Dump pulses (up to 120 V, 400 ms). IC Role / Device Role / Timing Role: Front-end TVS shunting surge energy away from LDO regulators and microcontrollers. Use Value: 36 kW PPP rating and 1.0 °C/W RθJC enable survival of repeated load dump events without thermal runaway. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: DC link protection in variable-frequency drives where IGBT switching induces high dv/dt transients. IC Role / Device Role / Timing Role: Bidirectional clamping element across +DC and –DC rails to suppress commutation spikes. Use Value: Symmetric V(BR) range (28.9–31.9 V) ensures balanced clamping on both polarities, preventing rail collapse during regeneration. |
Use Scenario: Signal line protection in EN 50121-3-2 compliant railway signaling equipment interfacing with trackside sensors. IC Role / Device Role / Timing Role: Secondary surge protector downstream of gas discharge tubes, handling residual energy per IEC 61000-4-5 Class 4 (42 Ω). Use Value: 43.0 V clamping voltage ensures interface ICs (e.g., RS-485 transceivers) remain within absolute maximum ratings during surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA | Lower PPP (600 W), smaller SMB package, higher RθJA (50 °C/W), no MIL-PRF-19500 upscreening | Suitable for consumer-grade or non-safety-critical 24 V systems; insufficient for DO-160F multi-stroke or automotive load dump | Select only for cost-sensitive, low-energy surge environments where thermal mass and reliability are secondary |
| SMCJ26CA | PPP = 1500 W, SMC package, RθJC ≈ 2.5 °C/W, AEC-Q101 qualified but not DO-160F tested | Acceptable for basic IEC 61000-4-5 Class 3 protection; lacks documented waveform-specific validation for aviation | Use when DO-160F compliance is not required and board space constraints preclude PLAD footprint |
Compared with SMBJ26CA and SMCJ26CA, the MPLAD36KP26CAE3 provides 60× higher peak power handling, 2.5× lower thermal resistance, and certified DO-160F Waveform 4 Level 4 performance - making it the only viable choice for certified avionics and high-reliability automotive power rail protection.
Availability
MPLAD36KP26CAE3 is available at Aetrix Electronics and suitable for avionics power distribution, automotive load-dump protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MPLAD36KP26CAE3 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) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD series was developed specifically for high-energy transient suppression in safety-critical platforms where multi-stroke lightning, load dump, and ESD robustness are mandatory - targeting DO-160, ISO 7637, and IEC 61000-4-x compliance out-of-the-box.
FAQ
What is the clamping voltage of MPLAD36KP26CAE3 at its rated peak pulse current?
The MPLAD36KP26CAE3 has a maximum clamping voltage (VC) of 43.0 V at its rated peak pulse current (IPP) of 838 A under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and guarantees that downstream circuitry remains below critical overvoltage thresholds during surge events. The MPLAD36KP26CAE3 maintains this clamping performance across its specified operating temperature range when mounted per the recommended pad layout.
Is MPLAD36KP26CAE3 qualified for automotive applications?
Yes, the MPLAD36KP26CAE3 is AEC-Q101 qualified, confirming its suitability for automotive electronic systems. It meets stress tests including high-temperature reverse bias, temperature cycling, and highly accelerated life testing. Its 26 V VWM and 43.0 V clamping voltage align with 24 V vehicle architectures, and its 36 kW PPP rating supports ISO 7637-2 Load Dump Pulse 5a compliance when properly heatsinked. The MPLAD36KP26CAE3 is used in engine control units, ADAS power supplies, and body control modules.
Does MPLAD36KP26CAE3 require special PCB layout considerations?
Yes, the MPLAD36KP26CAE3 requires adherence to the manufacturer's recommended pad layout: 11.94 mm × 5.85 mm copper area for the metal base (cathode) to achieve the specified 1.0 °C/W junction-to-case thermal resistance. Use of thermal vias beneath the base and connection to internal ground planes is strongly advised. The anode pad must be sized per standard SMT guidelines. Deviation from this layout degrades thermal performance and reduces surge endurance. The MPLAD36KP26CAE3 datasheet provides exact dimensions in inches and millimeters.
What does the "CA" suffix indicate in MPLAD36KP26CAE3?
The "CA" suffix in MPLAD36KP26CAE3 denotes bidirectional construction - meaning the device clamps transients of either polarity symmetrically. Unlike unidirectional variants (e.g., MPLAD36KP26AE3), which conduct only in reverse bias, the CA version uses dual-avalanche junctions to protect AC-coupled lines or floating DC rails without polarity dependency. This is confirmed in the nomenclature section of RF01216 Rev B, where "CA = Bidirectional" is explicitly defined. The MPLAD36KP26CAE3 is therefore ideal for differential signal lines and transformer-isolated interfaces.
How does MPLAD36KP26CAE3 meet RTCA DO-160F lightning protection requirements?
The MPLAD36KP26CAE3 is validated for RTCA DO-160F Section 22 lightning-induced transient susceptibility, specifically Waveform 4 (6.4/69 μs) at Level 4 and Waveform 5A (40/120 μs) at Level 4 (up to 78 V VWM). Its 36 kW peak pulse power, low clamping voltage (43.0 V), and thermal design enable multi-stroke survivability. Testing is performed per the standard's ambient temperature and mounting conditions, and derating guidance is provided in MicroNote 132. The MPLAD36KP26CAE3 is widely deployed in certified avionics power entry modules.
MPLAD36KP26CAE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 838A
- Power - Peak Pulse:
- 36000W (36kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP26CAE3 FAQ
1.How can I place an order for MPLAD36KP26CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP26CAE3 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 MPLAD36KP26CAE3 reliable?
The price and inventory of MPLAD36KP26CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP26CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP26CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP26CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP26CAE3?
MPLAD36KP26CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP26CAE3 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 MPLAD36KP26CAE3?
For technical support, including MPLAD36KP26CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP26CAE3 requirements.
6.How does Aetrix verify that MPLAD36KP26CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP26CAE3 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 MPLAD36KP26CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP26CAE3?
All MPLAD36KP26CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP26CAE3, 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 MPLAD36KP26CAE3 part is unused and in its original packaging.
Return procedure for MPLAD36KP26CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP26CAE3 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
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…
