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onsemi CM1215-02SO
- Part No.:
- CM1215-02SO
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-74A, SOT-753
- Datasheet:
-
CM1215-02SO.pdf
- Description:
- TVS DIODE 4.8VC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,581
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Product details
Overview
CM1215-02SO from onsemi is a 2-channel low-capacitance ESD protection array designed for high-speed data lines including USB2.0, IEEE1394, and Serial ATA. It delivers ±15 kV IEC 61000-4-2 contact ESD protection per channel, features 1.6 pF typical channel input capacitance, 0.13 pF mutual capacitance, and operates from 3.3 V to 5.5 V supply rails.
For engineers reviewing the CM1215-02SO datasheet, pinout, applications, or equivalent options, this device is selected for high-speed interface protection where minimal signal distortion, tight capacitance matching (0.04 pF I/O-to-GND difference), and robust multi-strike endurance (>1000 ESD events per pin) are critical design requirements.
Technical Context
The CM1215-02SO implements dual bidirectional ESD protection channels using stacked diode clamps between I/O pins and VP/VN rails. Each channel steers positive transients to VP and negative transients to VN, with clamp voltages of VP+1.5 V and VN−1.5 V at 1 A peak current.
It operates within −40°C to +85°C ambient temperature, supports 6 V maximum VP–VN differential, and maintains stable capacitance across voltage and temperature - enabling reliable signal integrity in HDMI, DVI, and PCIe applications without degrading eye diagrams.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Protection Level | ±15 kV per IEC 61000-4-2 contact discharge - ensures system-level compliance without external TVS cascading. |
| Channel Input Capacitance | 1.6 pF typical at 1 MHz - preserves signal rise/fall times in >480 Mbps USB2.0 links. |
| Mutual Capacitance | 0.13 pF typical - minimizes crosstalk between CH1 and CH2 in differential or adjacent single-ended traces. |
| I/O-to-GND Capacitance Difference | 0.04 pF typical - enables balanced impedance matching for high-fidelity video interfaces like DVI/HDMI. |
| Clamp Voltage (IPP = 1 A) | VP+1.5 V / VN−1.5 V - limits transient overvoltage to safe margins for 3.3 V or 5 V logic receivers. |
| Dynamic Resistance | 0.4 Ω typical - sustains low-voltage clamping under fast-rising ESD pulses (e.g., 30 A/ns). |
| ESD Strike Endurance | >1000 strikes per I/O pin - supports long-term reliability in field-deployed consumer electronics. |
Pinout & Package
SOT23-6 package (Case 527AJ), Pb-free, RoHS compliant, 2.70–3.00 mm × 2.50–3.10 mm footprint with 0.95 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CH1 I/O | Protected signal line 1 - connects directly to connector or IC pad requiring ESD hardening. |
| 2 | VN | Negative supply rail - must be tied to system ground with low-inductance path and local 0.2 µF ceramic bypass. |
| 3 | CH2 I/O | Protected signal line 2 - used for complementary or independent high-speed data pair (e.g., D+ and D−). |
| 4 | CH3 | No connection - unused pin; left floating or grounded per layout constraints (not internally connected). |
| 5 | VP | Positive supply rail - tied to same 3.3 V or 5 V domain as protected circuitry; requires local decoupling. |
| 6 | CH4 | No connection - unused pin; electrically isolated, no internal bond wire or die connection. |
Key Features
| Feature | Design Value |
|---|---|
| Lowest-in-class channel capacitance | 1.6 pF typical enables use in 480 Mbps USB2.0 and 1.5 Gbps DVI without signal degradation. |
| Tight capacitance matching | 0.04 pF max I/O-to-GND difference preserves common-mode rejection in differential signaling paths. |
| Stacked diode architecture | Enables bidirectional clamping to both VP and VN rails - eliminates need for separate positive/negative TVS devices. |
| Multi-strike robustness | Withstands >1000 ±15 kV ESD events per pin - validated for consumer product lifecycle reliability. |
| Pb-free SOT23-6 packaging | Compatible with standard reflow profiles and automated assembly; meets RoHS Directive 2011/65/EU. |
Applications
| USB2.0 Port Protection | HDMI/DVI Interface Protection |
|---|---|
|
Use Scenario: Protecting D+ and D− lines on a notebook USB host controller against user-handling ESD events. IC Role / Device Role / Timing Role: ESD transient suppressor placed at board edge connector, clamping surges before they reach PHY transceiver. Use Value: 1.6 pF loading avoids USB2.0 eye diagram closure; ±15 kV rating satisfies IEC 61000-4-2 Level 4 compliance. |
Use Scenario: Shielding TMDS clock and data lanes in an LCD monitor HDMI receiver from cable-discharge ESD. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on each TMDS pair, referenced to 3.3 V supply and chassis ground. Use Value: 0.13 pF mutual capacitance prevents inter-pair skew; 0.04 pF I/O-to-GND delta maintains differential impedance stability. |
| Serial ATA Data Line Protection | PCIe Gen1 Lane Protection |
|
Use Scenario: Safeguarding SATA TX/RX differential pairs in a desktop motherboard storage controller from hot-plug ESD. IC Role / Device Role / Timing Role: Dual-channel ESD array mounted adjacent to SATA connector, with VP/VN tied to 3.3 V domain. Use Value: Dynamic resistance of 0.4 Ω ensures sub-2 V overshoot during 30 A/ns transients - preserving SATA GenII signal integrity. |
Use Scenario: Protecting PCIe Gen1 x1 lane (REFCLK, TX, RX) in embedded industrial gateway against board-level ESD coupling. IC Role / Device Role / Timing Role: One CM1215-02SO per differential pair, minimizing trace length between connector and device. Use Value: Stable 1.6 pF capacitance across −40°C to +85°C avoids timing margin loss in extended-temperature deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRSR | Single-channel, 1.0 pF typical capacitance, ±8 kV IEC 61000-4-2, SOT-563 package. | Limited to one signal line; lower ESD rating reduces margin for harsh environments. | Choose when ultra-low capacitance (<1.1 pF) is prioritized over multi-channel integration or higher ESD robustness. |
| SP1002-02UTG | 2-channel, 0.3 pF typical capacitance, ±12 kV IEC 61000-4-2, SOT-23-6, higher leakage (±5 µA). | Better high-frequency performance but reduced ESD margin and higher DC leakage may affect battery-powered systems. | Prefer for RF-sensitive applications (e.g., antenna switch control lines) where sub-0.5 pF loading is mandatory. |
Compared with TPD2E001DRSR and SP1002-02UTG, the CM1215-02SO offers the optimal balance of dual-channel integration, ±15 kV robustness, and 1.6 pF loading - making it preferred for mainstream high-speed digital interfaces where reliability and layout simplicity are co-prioritized.
Availability
CM1215-02SO is available at Aetrix Electronics and suitable for USB2.0 port protection, HDMI/DVI interface hardening, and Serial ATA data line safeguarding requiring stable component supply across production volumes and extended lifecycle programs.
Supply support for CM1215-02SO 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
The CM1215-02SO belongs to onsemi's low-capacitance ESD array family, engineered specifically for high-speed digital interfaces where signal fidelity and system-level ESD compliance must coexist without trade-offs.
FAQ
What is the maximum operating voltage for the CM1215-02SO?
The CM1215-02SO supports an operating supply voltage range of VP–VN = 3.3 V to 5.5 V, with absolute maximum rating of 6 V. This allows direct integration into both 3.3 V and 5 V logic domains without level-shifting circuitry. The device's clamp voltage remains predictable (VP+1.5 V / VN−1.5 V) across this range, ensuring consistent protection behavior in CM1215-02SO-based designs.
Does the CM1215-02SO require external biasing or control signals?
No, the CM1215-02SO is a passive ESD protection device requiring only VP and VN connections to the system supply rails - no enable pins, control logic, or external biasing. Its stacked diode architecture automatically activates during ESD transients, making CM1215-02SO ideal for space-constrained, low-complexity PCB layouts where minimal BOM count is essential.
Can the CM1215-02SO protect differential signal pairs like USB D+/D−?
Yes - the CM1215-02SO provides two independent ESD channels (CH1 and CH2), each with matched 1.6 pF capacitance and 0.04 pF I/O-to-GND tolerance. This enables symmetrical protection of differential pairs without skew or imbalance, and its 0.13 pF mutual capacitance prevents cross-talk between CH1 and CH2 - a key requirement for maintaining USB2.0 eye opening in CM1215-02SO implementations.
How many ESD strikes can the CM1215-02SO withstand before degradation?
The CM1215-02SO is rated for over 1000 ±15 kV contact ESD strikes per I/O pin under IEC 61000-4-2 conditions. This endurance is verified through accelerated life testing and ensures long-term reliability in consumer electronics subject to repeated handling - a critical specification confirmed in the official CM1215-02SO datasheet and validated across production lots.
Is the CM1215-02SO compatible with lead-free reflow soldering processes?
Yes - the CM1215-02SO uses a Pb-free SOT23-6 package (Case 527AJ) qualified for standard JEDEC J-STD-020 moisture sensitivity level 1 and compatible with IPC/JEDEC J-STD-020D reflow profiles. Its thermal characteristics support peak temperatures up to 260°C, making CM1215-02SO fully suitable for modern lead-free manufacturing without derating or special process controls.
CM1215-02SO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- 4.8V (Typ)
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
CM1215-02SO FAQ
1.How can I place an order for CM1215-02SO through Aetrix?
Please submit a Request for Quotation (RFQ) for CM1215-02SO 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 CM1215-02SO reliable?
The price and inventory of CM1215-02SO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CM1215-02SO is usually 5 days.
3.What payment methods are accepted for CM1215-02SO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CM1215-02SO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CM1215-02SO?
CM1215-02SO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CM1215-02SO 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 CM1215-02SO?
For technical support, including CM1215-02SO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CM1215-02SO requirements.
6.How does Aetrix verify that CM1215-02SO is sourced from the original manufacturer or authorized distributors?
All CM1215-02SO 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 CM1215-02SO meets industry standards.
7.What is the process for return or replacement of CM1215-02SO?
All CM1215-02SO units undergo pre-shipment inspection (PSI). If there is an issue with CM1215-02SO, 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 CM1215-02SO part is unused and in its original packaging.
Return procedure for CM1215-02SO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CM1215-02SO Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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