My Inquiry
My Account
Microchip Technology SMAJ36CAE3/TR13
- Part No.:
- SMAJ36CAE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ36CAE3/TR13.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,664
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ36CAE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for robust ESD, EFT, and secondary lightning surge protection in DC power rails and signal lines. It features a 36 V reverse standoff voltage (VWM), 40.0 V minimum breakdown voltage (VBR), 64.3 V maximum clamping voltage (VC) at 9.8 A peak pulse current (IPP), and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in industrial motor drives, telecom power interfaces, and automotive body control modules.
For engineers reviewing the SMAJ36CAE3/TR13 datasheet, SMAJ36CAE3/TR13 pinout, SMAJ36CAE3/TR13 application, or SMAJ36CAE3/TR13 equivalent, key selection criteria include bidirectional clamping behavior, RoHS-compliant matte-tin plating, DO-214AC package compatibility, IEC61000-4-2/4-4/4-5 compliance, and tape-and-reel delivery (TR13 = 2500/reel).
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with clamping response <5 ns and sub-100 ps theoretical turn-on for unidirectional mode (not applicable here). Its silicon avalanche structure delivers stable breakdown at ±40.0 V (IBR = 1 mA), enabling precise overvoltage limiting without forward conduction during normal operation.
Thermal performance is defined by 15 °C/W junction-to-lead resistance and 80 °C/W junction-to-ambient (on FR4, 1 oz Cu), supporting sustained 5 W steady-state dissipation at lead temperature (TL) of 75 °C. Moisture sensitivity level is IPC/JEDEC Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA; sets upper limit for protected line voltage. |
| VBR min @ IBR | 40.0 V @ 1 mA - guaranteed avalanche initiation threshold; ensures predictable clamping onset under transients. |
| VC @ IPP | 64.3 V @ 9.8 A - maximum voltage seen by downstream circuit during 10/1000 µs surge; defines worst-case stress on ICs. |
| PPP | 500 W - peak pulse power handling capability; supports high-energy surges like IEC61000-4-5 Class 3 (42 Ω source). |
| IPP | 9.8 A - calculated peak current at VC; used to size PCB trace width and ground path impedance. |
| TJ range | –65 °C to +150 °C - full operational junction temperature range; validated for under-hood automotive and industrial environments. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, void-free thermosetting epoxy case (UL94V-0), C-bend leads with RoHS-compliant matte-tin plating. Cathode band omitted (bidirectional device).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No polarity marking; terminals interchangeable; clamps positive and negative transients equally. |
| Case / Body | Thermal path & mechanical anchor | Thermally coupled to PCB copper; requires recommended pad layout (2.57–2.79 mm width, 4.93–5.48 mm length) for 15 °C/W RθJL. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC lines without polarity concerns. |
| IEC61000-4-5 Class 3 support | Validated for 1 kV surge (42 Ω source) - suitable for industrial Ethernet PHYs and CAN bus interfaces. |
| RoHS-compliant "e3" finish | Matte-tin plating meets JEDEC J-STD-020B Level 1 moisture sensitivity; no bake required pre-reflow. |
| 500 W 10/1000 µs rating | Handles repetitive surges up to 0.01% duty cycle - appropriate for motor drive gate driver supply rails. |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
Use Scenario: Protection of 24 V DC input stage against inductive kickback from contactors and relay coils. IC Role / Device Role / Timing Role: Bidirectional TVS placed between rail and ground to clamp both positive and negative transients. Use Value: Limits voltage excursion to ≤64.3 V during 9.8 A surges, preventing damage to upstream DC-DC controllers and optocouplers. | Use Scenario: Surge suppression on -48 V telecom power feed lines exposed to lightning-induced coupling. IC Role / Device Role / Timing Role: Primary-level TVS on input filter stage, coordinated with MOVs and gas discharge tubes. Use Value: Fast <5 ns response ensures clamping before secondary protection devices activate, reducing let-through energy. |
| Automotive Body Control Modules | Industrial Ethernet PHYs |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins connected to external harnesses. IC Role / Device Role / Timing Role: Localized TVS at connector entry point, absorbing ESD events per IEC61000-4-2 ±15 kV contact discharge. Use Value: Maintains VWM = 36 V margin above 12 V nominal system voltage, allowing safe operation during load dump. | Use Scenario: Data line protection on RJ45 magnetics side for 10/100BASE-TX Ethernet ports. IC Role / Device Role / Timing Role: Bidirectional TVS across differential pair (e.g., TX+/TX−) to suppress common-mode surges. Use Value: Symmetric clamping preserves signal integrity while meeting IEC61000-4-5 Level 3 (1 kV) immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CAHE3/TR13 | Same electrical specs; "H" denotes enhanced reliability screening per MIL-PRF-19500 JANTX level. | Required for aerospace avionics where extended temperature cycling (-55 °C to +125 °C ×10) and HTRB testing are mandated. | Select SMAJ36CAHE3/TR13 only when qualification to MIL-PRF-19500 is contractually required. |
| SMBJ36CA-E3/52 | Same VWM, VBR, VC; lower PPP = 600 W but larger SMB package (DO-214AA); 10% higher IPP (10.8 A). | Better thermal mass for higher average surge duty cycles; less board space efficiency than SMAJ series. | Choose SMBJ36CA-E3/52 if PCB layout allows larger footprint and higher long-term surge endurance is prioritized over miniaturization. |
Compared with SMAJ36CAE3/TR13, SMAJ36CAHE3/TR13 adds military-grade screening without altering clamping behavior, while SMBJ36CA-E3/52 trades compactness for improved thermal capacity - making the original optimal for space-constrained industrial designs requiring standard commercial reliability.
Availability
SMAJ36CAE3/TR13 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, and automotive body control modules requiring stable component supply and RoHS-compliant surge protection.
Supply support for SMAJ36CAE3/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 U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The SMAJ series was engineered for surface-mount transient suppression in harsh environments, emphasizing fast response, repeatable clamping, and robust thermal design in the DO-214AC footprint.
FAQ
What does the "CA" suffix indicate in SMAJ36CAE3/TR13?
The "CA" suffix in SMAJ36CAE3/TR13 specifies a bidirectional configuration - meaning the device clamps transients of either polarity symmetrically across its two terminals. Unlike unidirectional variants (e.g., SMAJ36A), it has no cathode marking and is used where AC signals or floating DC rails require equal protection in both directions. This is confirmed in Microsemi's datasheet revision L, page 1.
Is SMAJ36CAE3/TR13 compliant with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ36CAE3/TR13 is rated for IEC61000-4-5 secondary lightning protection: it supports Class 3 (1 kV, 42 Ω source) and Class 2 (1 kV, 12 Ω source) per Microsemi's documentation. Its 64.3 V clamping voltage at 9.8 A ensures downstream circuits remain within safe operating limits during standardized surge waveforms - critical for telecom and industrial fieldbus interfaces.
What is the thermal resistance specification for SMAJ36CAE3/TR13?
SMAJ36CAE3/TR13 has a junction-to-lead thermal resistance (RθJL) of 15 °C/W and a junction-to-ambient resistance (RθJA) of 80 °C/W when mounted on an FR4 PCB with 1 oz copper and Microsemi's recommended pad layout. These values are measured per JEDEC standards and define heat dissipation limits for both pulsed and steady-state operation - essential for reliability in enclosed enclosures or high-temperature ambient conditions.
Does SMAJ36CAE3/TR13 require moisture preconditioning before reflow soldering?
No, SMAJ36CAE3/TR13 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ambient conditions without dry packing or baking. The "e3" RoHS-compliant matte-tin plating and void-free epoxy body contribute to this robust MSL rating - simplifying manufacturing flow for high-volume SMT assembly.
What is the peak pulse current rating for SMAJ36CAE3/TR13 at its clamping voltage?
The peak pulse current (IPP) for SMAJ36CAE3/TR13 is 9.8 A at a clamping voltage (VC) of 64.3 V under the standard 10/1000 µs double-exponential waveform. This value is derived directly from the 500 W peak pulse power rating (PPP = VC × IPP) and is verified in Microsemi's electrical characteristics table on page 2 of MSC0270A Rev L.
SMAJ36CAE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ36CAE3/TR13 FAQ
1.How can I place an order for SMAJ36CAE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ36CAE3/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 SMAJ36CAE3/TR13 reliable?
The price and inventory of SMAJ36CAE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ36CAE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ36CAE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ36CAE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ36CAE3/TR13?
SMAJ36CAE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ36CAE3/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 SMAJ36CAE3/TR13?
For technical support, including SMAJ36CAE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ36CAE3/TR13 requirements.
6.How does Aetrix verify that SMAJ36CAE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ36CAE3/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 SMAJ36CAE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ36CAE3/TR13?
All SMAJ36CAE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ36CAE3/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 SMAJ36CAE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ36CAE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ36CAE3/TR13 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…
