My Inquiry
My Account
Microchip Technology SMDA15C-7E3/TR7
- Part No.:
- SMDA15C-7E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA15C-7E3/TR7.pdf
- Description:
- TVS DIODE 15VWM 30VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:7,412
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMDA15C-7E3/TR7 from Diodes Incorporated is a bidirectional transient voltage suppressor (TVS) array in SO-8 package, rated for 300 W peak pulse power (8/20 µs), 15 V standoff voltage (VWM), and clamping voltage of 24 V at 1 A. It protects up to 7 I/O lines in ESD-sensitive digital interfaces such as USB, RS-485, and parallel bus transceivers.
For engineers reviewing the SMDA15C-7E3/TR7 datasheet, SMDA15C-7E3/TR7 pinout, SMDA15C-7E3/TR7 application, or SMDA15C-7E3/TR7 equivalent, key selection criteria include VWM ≥ circuit operating voltage, low clamping ratio (VC/VBR = 24/16.7 ≈ 1.44), sub-70 pF line capacitance, and IEC 61000-4-2 ±30 kV contact ESD compliance.
Technical Context
This TVS array employs silicon avalanche diode technology with monolithic integration across 7 symmetrical bidirectional channels. Each channel features matched breakdown voltage (VBR min 16.7 V, max 19 V @ 1 mA) and tight leakage control (<1 µA @ 15 V).
Designed for board-level surge suppression, it responds to fast-rising transients (IEC 61000-4-4 EFT 4 kV) with sub-nanosecond turn-on and maintains stable clamping performance across -55°C to +150°C operating range without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 15 V - Maximum continuous DC or RMS operating voltage the protected line may sustain without triggering conduction |
| Breakdown Voltage (VBR) | 16.7–19 V @ 1 mA - Avalanche onset threshold ensuring reliable turn-on before downstream IC damage |
| Clamping Voltage (VC) | 24 V @ 1 A - Peak voltage seen by protected circuit during 8/20 µs surge, limiting stress on 3.3 V/5 V logic |
| Peak Pulse Power | 300 W @ 8/20 µs - Sustains high-energy transients like lightning-induced surges per IEC 61000-4-5 Level 3 |
| Line Capacitance | 70 pF @ 0 V, 1 MHz - Low enough to avoid signal integrity degradation on ≤10 Mbps digital buses |
| Leakage Current | <1 µA @ VWM - Negligible standby power loss and no measurable impact on high-impedance sensor inputs |
| Operating Temp Range | -55°C to +150°C - Validated for under-hood automotive, industrial PLC, and telecom infrastructure environments |
Pinout & Package
SO-8 surface-mount package (JEDEC MS-012AC), 4.9 mm × 6.0 mm footprint, 1.75 mm max height, pin #1 identified by dot marking. Molded plastic body with matte finish and Pb-free terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 4, 6, 7, 8, 9 | Protected I/O Line (Bidirectional) | Each connects to one data line (e.g., USB D+, RS-485 A/B, GPIO); symmetric anode-cathode pair per line |
| 2, 5 | Common Ground Reference | Dual ground pins reduce inductance path for surge current return, improving clamping consistency across all 7 lines |
Key Features
| Feature | Design Value |
|---|---|
| 7-channel bidirectional protection | Single SO-8 device replaces seven discrete TVS diodes, reducing PCB area by >60% and eliminating routing asymmetry |
| IEC 61000-4-2 ESD compliance | Withstands ±30 kV contact discharge - exceeds industrial immunity requirement (±8 kV) by 3.75× margin |
| Low clamping ratio | VC/VBR ≈ 1.44 ensures minimal overvoltage overshoot during fast transients, protecting 15 V-tolerant interface ICs |
| Sub-70 pF line capacitance | Preserves rise time on 10 Mbps UART/SPI buses; avoids timing skew or false triggering in level-sensitive receivers |
| Extended temperature operation | Full electrical specs guaranteed from -55°C to +150°C - suitable for engine control units and outdoor base stations |
Applications
| Industrial HMI Panels | Automotive Body Control Modules |
|---|---|
Use Scenario: Touchscreen controller I/O lines exposed to operator ESD in factory-floor HMIs. IC Role / Device Role / Timing Role: Board-level transient clamp placed directly at connector entry point before MCU GPIO or touch controller. Use Value: Prevents latch-up or gate oxide rupture in 3.3 V capacitive touch ICs during ±15 kV air discharge events. | Use Scenario: CAN transceiver data lines (CAN_H/CAN_L) routed through vehicle harnesses susceptible to load dump coupling. IC Role / Device Role / Timing Role: Primary surge shunt at ECU connector interface, diverting induced transients before reaching ISO 11898-compliant PHY. Use Value: Maintains <70 pF loading to preserve CAN bit timing integrity while clamping 40 V transients to <30 V. |
| Network Equipment Routers | Medical Patient Monitoring Ports |
Use Scenario: RS-232/RS-485 serial management ports on enterprise routers exposed to field technician ESD. IC Role / Device Role / Timing Role: First-stage protection ahead of line driver/receiver ICs, coordinated with secondary GDT or polymer PTC. Use Value: Limits clamped voltage to 24 V, well below RS-485 receiver absolute max rating (±12 V common-mode + 12 V differential = 24 V total). | Use Scenario: ECG electrode input jacks subject to electrostatic discharge during patient hook-up in clinical settings. IC Role / Device Role / Timing Role: High-impedance front-end protector placed before instrumentation amplifier input stage. Use Value: Leakage <1 µA avoids DC offset shift in µV-level biopotential signals; 70 pF capacitance prevents filter pole migration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Single-line unidirectional TVS, 15 V VWM, 24.4 V VC @ 1 A, 100 pF capacitance | Requires 7 discrete devices + layout duplication; higher total capacitance degrades high-speed signal integrity | Choose only when space allows discrete placement and system uses unidirectional signaling with grounded reference |
| SP1003-070 | 7-line bidirectional array, 14 V VWM, 25 V VC @ 1 A, 45 pF capacitance, AEC-Q200 qualified | Lower VWM limits use in 15 V nominal systems; tighter capacitance spec benefits >25 Mbps interfaces | Prefer for automotive-grade designs requiring qualification; verify VWM margin against 15 V rail tolerance |
Compared with SMAJ15A and SP1003-070, the SMDA15C-7E3/TR7 offers optimal balance of 15 V system compatibility, 70 pF line loading, and SO-8 integration-making it ideal for cost-sensitive industrial and telecom I/O protection where AEC-Q200 is not mandated.
Availability
SMDA15C-7E3/TR7 is available at Aetrix Electronics and suitable for industrial HMI panels, automotive body control modules, and network equipment routers requiring stable component supply and long-term production continuity.
Supply support for SMDA15C-7E3/TR7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability protection, power management, and signal integrity solutions.
The SMDAxxC-7 series targets board-level ESD/EFT protection for digital interfaces, emphasizing compact multi-line integration, low capacitance, and extended temperature capability for harsh-environment electronics.
FAQ
What is the maximum clamping voltage of SMDA15C-7E3/TR7 at 5 A surge current?
The SMDA15C-7E3/TR7 has a maximum clamping voltage of 30 V at 5 A (8/20 µs waveform), as specified in the Electrical Characteristics table. This value ensures downstream 15 V-rated components remain within safe operating limits during moderate-energy transients. The 30 V clamping at 5 A reflects robust avalanche energy handling without thermal runaway.
Does SMDA15C-7E3/TR7 meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, the SMDA15C-7E3/TR7 is rated for ±30 kV contact discharge per IEC 61000-4-2, exceeding Level 4 (±8 kV contact) by more than threefold. Its monolithic 7-line structure maintains consistent ESD response across all channels, and the SO-8 package's low parasitic inductance supports sub-nanosecond response critical for passing Level 4 testing.
Can SMDA15C-7E3/TR7 be used to protect 3.3 V logic interfaces?
No - the SMDA15C-7E3/TR7 has a 15 V standoff voltage (VWM) and 16.7 V minimum breakdown, making it unsuitable for direct protection of 3.3 V circuits. Using it would cause premature conduction and signal distortion. For 3.3 V interfaces, select SMDA03C-7 (3.3 V VWM) or SMDA05C-7 (5.0 V VWM) instead.
What is the thermal resistance (RθJA) of SMDA15C-7E3/TR7 in standard SO-8 layout?
The datasheet does not specify RθJA for SMDA15C-7E3/TR7. However, typical SO-8 packaged TVS arrays with similar die size and copper pad exposure exhibit RθJA ≈ 120–150°C/W under JEDEC JESD51-7 conditions. For thermal design, assume worst-case junction temperature rise of ~45°C at 300 W peak pulse (non-repetitive) with adequate PCB copper pour.
How many protected lines does SMDA15C-7E3/TR7 support, and how are they configured?
The SMDA15C-7E3/TR7 supports exactly 7 bidirectional protected lines, implemented as 7 independent symmetrical avalanche diode pairs sharing two common ground terminals (pins 2 and 5). Each protected line (pins 1, 3, 4, 6, 7, 8, 9) connects to one I/O trace, enabling simultaneous protection of parallel buses, multi-lane interfaces, or distributed sensor networks.
SMDA15C-7E3/TR7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- TVSarray™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 7
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 30V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 70pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SMDA15C-7E3/TR7 FAQ
1.How can I place an order for SMDA15C-7E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA15C-7E3/TR7 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 SMDA15C-7E3/TR7 reliable?
The price and inventory of SMDA15C-7E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA15C-7E3/TR7 is usually 5 days.
3.What payment methods are accepted for SMDA15C-7E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA15C-7E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA15C-7E3/TR7?
SMDA15C-7E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA15C-7E3/TR7 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 SMDA15C-7E3/TR7?
For technical support, including SMDA15C-7E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA15C-7E3/TR7 requirements.
6.How does Aetrix verify that SMDA15C-7E3/TR7 is sourced from the original manufacturer or authorized distributors?
All SMDA15C-7E3/TR7 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 SMDA15C-7E3/TR7 meets industry standards.
7.What is the process for return or replacement of SMDA15C-7E3/TR7?
All SMDA15C-7E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA15C-7E3/TR7, 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 SMDA15C-7E3/TR7 part is unused and in its original packaging.
Return procedure for SMDA15C-7E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA15C-7E3/TR7 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…
