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onsemi CM1213A-04SO
- Part No.:
- CM1213A-04SO
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-74, SOT-457
- Datasheet:
-
CM1213A-04SO.pdf
- Description:
- TVS DIODE 3.3VWM 10VC SC74
- Quantity:
- Payment:
- Shipping:
Inventory:11,259
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Product details
Overview
CM1213A-04SO from onsemi is a 4-channel low-capacitance ESD protection array designed for high-speed data lines, featuring 0.85 pF typical channel input capacitance, ±8 kV IEC 61000−4−2 contact discharge rating, and integrated VP–VN Zener clamping. It protects USB 2.0, HDMI, DVI, SATA, and IEEE1394 interfaces while minimizing signal distortion in compact SC−74 packages.
For engineers reviewing the CM1213A-04SO datasheet, pinout, applications, or equivalent options, key selection criteria include channel capacitance matching (0.02 pF typical), clamp voltage (+9.9 V / −1.6 V at 1 A), supply rail protection without external bypass capacitors, and AEC−Q101 qualification for automotive-grade reliability.
Technical Context
The CM1213A-04SO implements a dual-diode steering architecture per channel-each I/O pin connects to both VP and VN rails via series diodes-to divert ESD transients to supply rails. Its embedded Zener diode between VP and VN actively clamps supply rail overvoltage during positive ESD events, eliminating reliance on external bypass capacitors.
It operates across −40°C to +85°C with 3.3 V to 5.5 V supply range, supports up to 1000 ESD strikes per pin under IEC 61000−4−2 Level 4, and maintains stable capacitance (<2.0 pF) across voltage and temperature variations-critical for differential signaling integrity in USB 2.0 and HDMI applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±8 kV contact discharge per IEC 61000−4−2 Level 4-ensures robust system-level ESD immunity without external TVS stacking. |
| Channel Input Capacitance | 0.85 pF typical at 1 MHz-preserves signal integrity on 480 Mbps USB 2.0 and 1.5 Gbps DVI/HDMI links. |
| Capacitance Matching | 0.02 pF typical between channels-enables precise differential pair protection without skew-induced jitter. |
| Clamp Voltage (VCL) | +9.9 V (positive), −1.6 V (negative) at 1 A-limits transient overvoltage seen by downstream PHY ICs. |
| Supply Voltage Range | 3.3 V to 5.5 V (VP − VN)-compatible with standard logic I/O domains including 3.3 V PCIe and 5 V FireWire. |
| Dynamic Resistance | 0.96 Ω (positive), 0.5 Ω (negative)-reduces voltage overshoot during fast-rising ESD pulses (e.g., 30 A in 1 ns). |
Pinout & Package
CM1213A-04SO uses the SC−74 (Case 318F) 6-pin surface-mount package-Pb-free, RoHS-compliant, 2.2 mm × 2.2 mm footprint with 0.95 mm height-optimized for high-density PCB layouts near connector entry points.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CH1 | ESD-protected bidirectional I/O channel-connects directly to protected signal line (e.g., USB D+). |
| 2 | VN | Negative supply rail terminal-must be tied to system ground plane with minimal inductance for effective negative transient clamping. |
| 3 | CH2 | ESD-protected bidirectional I/O channel-used for second signal line in differential pair (e.g., USB D−). |
| 4 | CH3 | ESD-protected bidirectional I/O channel-supports third high-speed line such as HDMI TMDS clock or SATA TX. |
| 5 | VP | Positive supply rail terminal-clamped internally by Zener to limit VP rise during positive ESD; no external capacitor required. |
| 6 | CH4 | ESD-protected bidirectional I/O channel-enables four-line protection in single-package footprint (e.g., HDMI data lanes 0–2 + clock). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated VP–VN Zener | Eliminates need for external 0.22 µF bypass capacitor-reducing BOM count and PCB area in space-constrained designs. |
| Low & matched capacitance | 0.85 pF typical with 0.02 pF inter-channel match-minimizes insertion loss and phase skew in differential high-speed links. |
| 1000-strike endurance | Each I/O pin withstands ≥1000 ±8 kV contact discharges-ensures long-term reliability in field-deployed consumer electronics. |
| AEC−Q101 qualified variant | SZCM1213A-04SO available for automotive infotainment and ADAS camera links requiring PPAP documentation. |
Applications
| USB 2.0 Interface Protection | HDMI/DVI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+/D− lines of USB 2.0 ports in notebooks, docking stations, and peripherals operating at 480 Mbps. IC Role / Device Role / Timing Role: ESD transient suppressor placed between connector and USB transceiver PHY-steering ESD current to VP/VN rails before it reaches sensitive analog front-end. Use Value: 0.85 pF capacitance prevents signal degradation and eye diagram closure; ±8 kV rating meets IEC 61000−4−2 compliance for end-product certification. | Use Scenario: Shielding TMDS data and clock channels in HDMI 1.4/1.3 or DVI-D interfaces of LCD TVs, set-top boxes, and digital signage. IC Role / Device Role / Timing Role: Four-channel bidirectional ESD clamp deployed per TMDS lane (3 data + 1 clock) to maintain signal fidelity up to 2.25 Gbps. Use Value: 0.02 pF capacitance matching ensures balanced differential signaling; low dynamic resistance limits VCL to +9.9 V/−1.6 V, protecting HDMI receiver inputs. |
| SATA III Transmitter Protection | IEEE1394 (FireWire®) Port Protection |
Use Scenario: Safeguarding TX+/TX− differential pairs of Serial ATA III (6 Gbps) controllers in desktop PCs and external HDD enclosures. IC Role / Device Role / Timing Role: ESD array mounted adjacent to SATA edge connector-shunting ESD energy away from SerDes transmitter output drivers. Use Value: Sub-1 pF loading avoids return loss degradation above 3 GHz; integrated Zener prevents VP rail collapse during hot-plug ESD events. | Use Scenario: Securing 400/800 Mbps IEEE1394a/b (FireWire®) ports in digital camcorders, audio interfaces, and professional video equipment. IC Role / Device Role / Timing Role: Four-channel protection applied to TPB+/TPB−/TPA+/TPA− lines-handling bidirectional data flow while preserving jitter budget. Use Value: Stable capacitance vs. voltage/temperature ensures consistent eye opening across operating conditions; 1000-strike endurance supports rugged field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DRYR | 0.6 pF typical capacitance; 5.5 V max VP–VN; no integrated Zener-requires external 0.1 µF VP bypass capacitor. | Optimized for ultra-low-capacitance USB 3.0/PCIe Gen3; lacks supply rail clamping for standalone VP protection. | Select when <0.7 pF is mandatory and board space allows external capacitor placement near VP. |
| ESD5V3U4-2/TR | 0.9 pF typical capacitance; ±12 kV air discharge; 3.3 V only VP–VN rating; no Zener-relies on system-level decoupling. | Better suited for industrial Ethernet or CAN FD where higher air discharge margin is prioritized over supply rail autonomy. | Select when IEC 61000−4−2 air discharge >±10 kV is required and 3.3 V supply is fixed. |
Compared with TPD4E001DRYR and ESD5V3U4-2/TR, the CM1213A-04SO uniquely combines supply rail autonomy (no external VP capacitor), tight capacitance matching (0.02 pF), and AEC−Q101-qualified variant-making it optimal for automotive HDMI, USB 2.0, and SATA interfaces where layout constraints and qualification rigor are critical.
Availability
CM1213A-04SO is available at Aetrix Electronics and suitable for USB 2.0, HDMI/DVI, and SATA III interface protection requiring stable component supply, automotive-grade traceability, and high-volume tape-and-reel fulfillment.
Supply support for CM1213A-04SO 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The CM1213A-04SO belongs to onsemi's ESD protection portfolio-engineered specifically for high-speed serial interfaces where sub-1 pF loading, multi-kilovolt ESD immunity, and supply rail self-protection are non-negotiable design requirements.
FAQ
What is the maximum operating supply voltage for the CM1213A-04SO?
The CM1213A-04SO supports an operating supply voltage (VP − VN) range of 3.3 V to 5.5 V, with absolute maximum rating of 6.0 V. This allows direct integration into 3.3 V and 5 V logic domains without level-shifting circuitry-critical for compatibility with USB 2.0 transceivers, HDMI source devices, and SATA controllers that operate within this voltage window.
Does the CM1213A-04SO require an external bypass capacitor on the VP pin?
No, the CM1213A-04SO does not require an external bypass capacitor on the VP pin due to its integrated Zener diode between VP and VN. This Zener actively clamps VP during positive ESD transients, eliminating the need for a discrete 0.22 µF ceramic capacitor-reducing component count, PCB area, and potential layout-induced inductance paths that degrade ESD performance.
How many ESD strikes can each channel of the CM1213A-04SO withstand?
Each I/O channel of the CM1213A-04SO is rated to withstand over 1000 ±8 kV contact discharge ESD strikes per IEC 61000−4−2 Level 4 testing-performed continuously at 1-second intervals. Post-test validation confirms all electrical parameters remain within specification, ensuring long-term reliability in consumer electronics subject to repeated handling and connector mating cycles.
What is the channel-to-channel capacitance matching specification for the CM1213A-04SO?
The CM1213A-04SO provides 0.02 pF typical channel input capacitance matching across its four ESD channels. This tight matching minimizes skew between differential signal pairs-such as USB D+/D− or HDMI TMDS data lanes-preventing timing jitter and maintaining signal integrity in high-speed serial links operating up to 480 Mbps or 1.65 Gbps.
Is there an automotive-qualified version of the CM1213A-04SO?
Yes, the SZCM1213A-04SO is the automotive-qualified variant of the CM1213A-04SO. It is AEC−Q101 qualified, PPAP capable, and manufactured under automotive-specific process controls-making it suitable for infotainment displays, rear-seat entertainment systems, and ADAS camera modules where ESD robustness and supply chain traceability are mandated.
CM1213A-04SO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-74, SOT-457
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 10V (Typ)
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74
CM1213A-04SO FAQ
1.How can I place an order for CM1213A-04SO through Aetrix?
Please submit a Request for Quotation (RFQ) for CM1213A-04SO 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 CM1213A-04SO reliable?
The price and inventory of CM1213A-04SO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CM1213A-04SO is usually 5 days.
3.What payment methods are accepted for CM1213A-04SO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CM1213A-04SO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CM1213A-04SO?
CM1213A-04SO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CM1213A-04SO 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 CM1213A-04SO?
For technical support, including CM1213A-04SO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CM1213A-04SO requirements.
6.How does Aetrix verify that CM1213A-04SO is sourced from the original manufacturer or authorized distributors?
All CM1213A-04SO 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 CM1213A-04SO meets industry standards.
7.What is the process for return or replacement of CM1213A-04SO?
All CM1213A-04SO units undergo pre-shipment inspection (PSI). If there is an issue with CM1213A-04SO, 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 CM1213A-04SO part is unused and in its original packaging.
Return procedure for CM1213A-04SO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CM1213A-04SO 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
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