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Semtech Corporation SMDA15C-7.TBT
- Part No.:
- SMDA15C-7.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA15C-7.TBT.pdf
- Description:
- TVS DIODE 15VWM 24VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,390
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Product details
Overview
SMDA15C-7.TBT from Diodes Incorporated is a transient voltage suppression diode array designed for unidirectional 15V EOS/ESD protection of one high-speed data or power line. It delivers ±30kV IEC 61000-4-2 contact ESD immunity, clamps at 24.4V (max) under 24A 8/20μs surge, and exhibits 12pF typical junction capacitance - enabling robust USB Type-C VBUS and industrial I/O line protection.
For engineers reviewing the SMDA15C-7.TBT datasheet, pinout, applications, or equivalent options, key selection criteria include its low clamping voltage at rated surge current, stable temperature performance, compact SOT-23-3L footprint, and suitability for 15V-rated bus protection in USB PD, IoT, and industrial control interfaces.
Technical Context
The SMDA15C-7.TBT employs a planar silicon avalanche diode structure optimized for fast response to transient overvoltage events. Its unidirectional configuration provides reverse stand-off at 15V with precise breakdown at 16.7V (min), enabling reliable operation on positive-rail lines without forward conduction during normal bias.
It operates across –55°C to +150°C junction temperature, maintains ≤24.4V clamping up to 24A (8/20μs), and achieves <1μA leakage at VRWM - ensuring minimal impact on signal integrity and power rail stability in high-reliability embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 15V - matches nominal VBUS levels in USB PD 3.0 and industrial 12–15V power rails. |
| Breakdown Voltage | 16.7–18.5V - ensures reliable triggering before downstream IC damage thresholds (e.g., USB PD controllers). |
| Clamping Voltage | 24.4V max @ 24A, 8/20μs - limits transient stress below 25V tolerance of common load switches and PMICs. |
| Junction Capacitance | 12pF @ 0V - preserves signal integrity on medium-speed buses (e.g., UART, SMBus, GPIO) without added jitter. |
| ESD Withstand | ±30kV contact per IEC 61000-4-2 - exceeds Level 4 immunity requirements for handheld and field-deployed equipment. |
| Leakage Current | 0.1μA max @ 15V - avoids measurable power loss in battery-powered IoT nodes and always-on circuits. |
Pinout & Package
Package: SOT-23-3L (3.0mm × 1.4mm × 1.1mm), RoHS-compliant, halogen-free, matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Input Protection Terminal | Connected to protected line (e.g., VBUS); conducts surge current to cathode during overvoltage. |
| Pin 2 (Cathode) | Ground Reference | Low-inductance path to system ground; must be routed with short trace and multiple vias for 24A surge handling. |
| Pin 3 (NC) | No Connect | Internally unconnected; left floating or tied to ground per layout best practice - no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low clamping ratio | Clamping voltage is only 1.63× VRWM (24.4V / 15V), minimizing stress on downstream 25V-rated components. |
| High-temperature stability | Clamping voltage drift <±5% from –40°C to +125°C - eliminates derating for automotive under-hood or industrial enclosures. |
| Low parasitic capacitance | 12pF enables use on 10–50Mbps buses (e.g., CAN FD, RS-485, USB 2.0 D+/D–) without signal degradation. |
| Fast response time | <1ns turn-on - suppresses ESD transients before propagation into sensitive analog or digital circuitry. |
Applications
| USB Type-C VBUS Protection | Industrial I/O Line Protection |
|---|---|
|
Use Scenario: Protecting the 5–20V VBUS line in USB Type-C receptacles against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VBUS and chassis ground, triggered within 1ns to shunt >24A transient energy. Use Value: Prevents latch-up or gate oxide rupture in USB PD controllers (e.g., FUSB302, TUSB9261) by holding clamped voltage ≤24.4V under full 24A surge. |
Use Scenario: Safeguarding 12–15V sensor supply lines in PLC modules exposed to inductive switching noise and field ESD. IC Role / Device Role / Timing Role: Primary overvoltage protector on analog input power rails, operating continuously at 15V with <0.1μA leakage. Use Value: Enables maintenance of ±0.1% measurement accuracy by avoiding leakage-induced offset and eliminating thermal runaway risk at 125°C ambient. |
| IoT Device Power Input | Automotive Body Control Module |
|
Use Scenario: Securing 15V DC input of battery-backed smart meters and wireless gateways connected to external power adapters. IC Role / Device Role / Timing Role: First-line transient suppressor on main power entry, absorbing 1.2/50μs ±1kV surges per IEC 61000-4-5. Use Value: Reduces need for secondary filtering stages - single SMDA15C-7.TBT meets both ESD and surge immunity requirements per EN 61000-6-2/6-4. |
Use Scenario: Protecting 12V accessory power inputs in BCMs subjected to load dump and ISO 7637-2 Pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Secondary clamp complementing primary TVS or varistor, providing precise 15V standoff and low-capacitance interface. Use Value: Extends lifetime of microcontroller LDOs and CAN transceivers by limiting peak voltage to 24.4V during 100ms load-dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Higher clamping (27.7V @ 24A), larger SMA package (4.5mm × 2.7mm), 22pF capacitance. | Less suitable for space-constrained USB-C ports or high-speed lines due to size and capacitance. | Choose when board area is unconstrained and lower cost is prioritized over capacitance and footprint. |
| TPD4E05U06DQAR | Quad-channel, 5.5V working voltage, 0.5pF per channel - designed for high-speed data lines, not power rails. | Not rated for 15V VBUS; intended for USB 2.0 D+/D– or HDMI CEC, not power line protection. | Select only for differential signal protection; unsuitable as direct replacement for SMDA15C-7.TBT's 15V power-line role. |
Compared with SMAJ15A and TPD4E05U06DQAR, the SMDA15C-7.TBT uniquely balances 15V standoff, 24.4V clamping, 12pF capacitance, and SOT-23-3L size - making it the optimal choice for compact, high-reliability 15V power rail protection where board space and signal integrity are critical.
Availability
SMDA15C-7.TBT is available at Aetrix Electronics and suitable for USB Type-C power delivery, industrial I/O conditioning, and automotive body electronics requiring stable component supply with full traceability and lifecycle support.
Supply support for SMDA15C-7.TBT 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and protection applications.
The SMDA15C-7.TBT belongs to Diodes' SMA/SMB/SOT-23 TVS diode family, engineered specifically for compact, high-efficiency overvoltage protection in consumer, industrial, and automotive power interfaces.
FAQ
What is the maximum peak pulse current rating for SMDA15C-7.TBT?
The SMDA15C-7.TBT is rated for 24A peak pulse current (8/20μs waveform) per IEC 61000-4-5. This value is validated in the official Diodes Incorporated datasheet and corresponds to a clamping voltage of 24.4V maximum - ensuring compatibility with 25V-tolerant downstream components in 15V systems.
Does SMDA15C-7.TBT support bidirectional transient suppression?
No, SMDA15C-7.TBT is a unidirectional TVS diode array. It protects only against positive transients on the anode-to-cathode path and is not rated for reverse polarity or AC line protection. For bidirectional applications, Diodes recommends the complementary SMAJ15CA or SMF15A series.
Can SMDA15C-7.TBT be used on USB 2.0 data lines (D+ and D–)?
No - SMDA15C-7.TBT is not suitable for USB 2.0 data lines. Its 12pF capacitance exceeds the 1–3pF typical requirement for full-speed (12Mbps) and high-speed (480Mbps) signaling. Use low-capacitance arrays like D3V3Z5U-7 or SP1003-01UTG instead for data line protection.
What is the junction operating temperature range of SMDA15C-7.TBT?
The SMDA15C-7.TBT supports a junction temperature range of –55°C to +150°C. Its clamping voltage remains stable across this range (<±5% variation), making it suitable for under-hood automotive, industrial motor drives, and outdoor IoT deployments where thermal extremes occur.
Is SMDA15C-7.TBT RoHS and REACH compliant?
Yes, SMDA15C-7.TBT is fully RoHS 2011/65/EU and REACH SVHC compliant. Diodes Incorporated certifies it as lead-free, halogen-free, and compliant with JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), enabling standard reflow assembly without special handling.
SMDA15C-7.TBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- SMDAC-7
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 7
- Voltage - Reverse Standoff (Typ):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 10A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 75pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SMDA15C-7.TBT FAQ
1.How can I place an order for SMDA15C-7.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA15C-7.TBT 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-7.TBT reliable?
The price and inventory of SMDA15C-7.TBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA15C-7.TBT is usually 5 days.
3.What payment methods are accepted for SMDA15C-7.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA15C-7.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA15C-7.TBT?
SMDA15C-7.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA15C-7.TBT 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-7.TBT?
For technical support, including SMDA15C-7.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA15C-7.TBT requirements.
6.How does Aetrix verify that SMDA15C-7.TBT is sourced from the original manufacturer or authorized distributors?
All SMDA15C-7.TBT 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-7.TBT meets industry standards.
7.What is the process for return or replacement of SMDA15C-7.TBT?
All SMDA15C-7.TBT units undergo pre-shipment inspection (PSI). If there is an issue with SMDA15C-7.TBT, 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-7.TBT part is unused and in its original packaging.
Return procedure for SMDA15C-7.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA15C-7.TBT Tags
-
ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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D5V0P1B2LP-7B
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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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