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onsemi CM1293A-04MR
- Part No.:
- CM1293A-04MR
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
CM1293A-04MR.pdf
- Description:
- TVS DIODE 3.3VWM 9.9VC 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,137
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Product details
Overview
CM1293A-04MR from onsemi is a 4-channel low-capacitance ESD protection array designed for high-speed data lines including HDMI, DVI, and Serial ATA. It delivers ±8 kV IEC 61000−4−2 contact discharge protection, features 2.0 pF max channel input capacitance, 1.5 pF typical I/O-to-I/O capacitance, and integrated Zener clamping between VP and VN rails to protect supply voltage integrity without external bypass capacitors.
For engineers reviewing the CM1293A-04MR datasheet, pinout, applications, or equivalent options, key selection criteria include low-clamp-voltage transient response (±1.6 V to +9.9 V), MSOP-10 package compatibility with high-density PCB layouts, and verified 1000+ ESD strike endurance per IEC 61000−4−2 Level 4 testing.
Technical Context
The CM1293A-04MR implements a dual-diode steering architecture per channel-pairing series-connected diodes to steer positive or negative ESD transients to VP or VN rails-combined with an embedded Zener diode across VP–VN to clamp supply rail excursions during ESD events. This eliminates reliance on external decoupling capacitors for rail stabilization under fast-rising transients.
Each of its four I/O channels operates within –40°C to +85°C, supports 3.3 V or 5.5 V supply rails, maintains ≤±1.0 µA leakage at 5 V, and achieves dynamic resistance of 0.96 Ω (positive) and 0.5 Ω (negative) at 1 A, 8/20 µs pulse conditions-enabling robust protection for signal integrity-critical interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±8 kV contact discharge per IEC 61000−4−2 Level 4-ensures compliance in end-equipment subjected to real-world electrostatic handling. |
| Channel Input Capacitance | 2.0 pF max at 1 MHz-minimizes signal distortion and insertion loss on USB2.0, HDMI, and SATA links. |
| I/O-to-I/O Capacitance | 1.5 pF typical-reduces crosstalk between adjacent high-speed differential pairs. |
| Clamp Voltage | +9.9 V (positive), –1.6 V (negative) at 1 A, 8/20 µs-limits voltage overshoot to safe levels for downstream 3.3 V logic. |
| Supply Voltage Range | 3.3 V to 5.5 V (VP–VN)-supports both legacy and modern interface voltage domains without level-shifting. |
| Operating Temperature | –40°C to +85°C-enables deployment in consumer electronics, set-top boxes, and industrial display systems. |
| Leakage Current | ±1.0 µA max at 5 V-prevents DC loading that could degrade bias points in sensitive analog or high-impedance inputs. |
Pinout & Package
CM1293A-04MR is housed in a Pb-free MSOP-10 (Case 846AE) package measuring 3.0 mm × 4.9 mm × 1.1 mm, optimized for space-constrained PCB layouts near connectors. Its 10-pin configuration includes four active I/O channels, dedicated VP and VN supply rails, and six no-connect (NC) terminals to isolate unused pins and reduce parasitic coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CH1 | ESD-protected bidirectional I/O channel-connects directly to protected signal line (e.g., HDMI TMDS+). |
| 2 | NC | No internal connection-must be left floating or grounded per layout best practices to avoid noise coupling. |
| 3 | VP | Positive supply rail-ties to local 3.3 V or 5 V plane; Zener clamps here during negative ESD events. |
| 4 | CH2 | ESD-protected bidirectional I/O channel-used for second signal line (e.g., HDMI TMDS–). |
| 5 | NC | No internal connection-no routing required; improves isolation between CH1/CH2 and CH3/CH4 sections. |
| 6 | CH3 | ESD-protected bidirectional I/O channel-supports third high-speed line (e.g., DVI clock or SATA TX+). |
| 7 | NC | No internal connection-maintains symmetry and minimizes trace stub effects in dense routing. |
| 8 | VN | Negative supply rail-typically connected to system ground; completes current path for positive ESD transients. |
| 9 | CH4 | ESD-protected bidirectional I/O channel-handles fourth signal (e.g., SATA RX– or HDMI CEC). |
| 10 | NC | No internal connection-provides mechanical stability and thermal relief in reflow soldering. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated VP–VN Zener diode | Clamps supply rail excursions during ESD strikes-eliminates need for external 0.22 µF ceramic capacitor in most designs. |
| 2.0 pF max channel capacitance | Preserves signal integrity up to 3 Gbps (e.g., HDMI 1.4), minimizing rise-time degradation and jitter accumulation. |
| 1000+ ESD strike endurance | Validated per IEC 61000−4−2 Level 4 with ±8 kV pulses at 1-second intervals-ensures long-term reliability in field-deployed units. |
| Low dynamic resistance | 0.96 Ω (positive), 0.5 Ω (negative) at 1 A-reduces voltage overshoot during fast transients, protecting downstream ICs. |
| Pb-free MSOP-10 package | RoHS-compliant footprint with 0.5 mm pitch-compatible with standard SMT assembly processes and automated optical inspection. |
Applications
| HDMI Interface Protection | DVI Port ESD Hardening |
|---|---|
|
Use Scenario: Protecting HDMI TMDS differential pairs and CEC line in digital TVs and set-top boxes exposed to user-handling ESD. IC Role / Device Role / Timing Role: Bidirectional ESD shunt placed immediately after HDMI connector to divert transients before reaching SoC HDMI receiver. Use Value: 1.5 pF I/O-to-I/O capacitance prevents skew between TMDS+ and TMDS–, preserving eye diagram integrity at 2.25 Gbps. |
Use Scenario: Safeguarding DVI transmitter outputs in LCD monitors and docking stations where hot-plug events induce ESD stress. IC Role / Device Role / Timing Role: Four-channel array assigned to DVI clock, R/G/B data lanes-each channel independently clamped to local 3.3 V rail. Use Value: ±8 kV contact rating meets IEC 61000−4−2 Level 4 requirements for Class B multimedia equipment without derating. |
| SATA Data Line Protection | USB2.0 High-Speed Port Shielding |
|
Use Scenario: Securing Serial ATA TX/RX differential pairs in notebook HDD bays and external enclosures subject to chassis discharge. IC Role / Device Role / Timing Role: Dual-channel assignment (CH1/CH2 for TX+, TX–; CH3/CH4 for RX+, RX–) with shared VP/VN rails. Use Value: 2.0 pF max input capacitance avoids violating SATA Gen II AC-coupling capacitor impedance targets (Z₀ = 100 Ω ± 10%). |
Use Scenario: Adding ESD resilience to USB2.0 upstream ports in portable media players and digital camcorders. IC Role / Device Role / Timing Role: Two channels protect D+ and D– lines; remaining two reserved for VBUS monitoring or future expansion. Use Value: Low clamping voltage (+9.9 V / –1.6 V) ensures USB transceiver I/O remains within absolute maximum ratings during ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DRYR | 4-channel, 1.0 pF typical capacitance, ±12 kV contact ESD rating, SOT-23-6 package (3 pins unused) | Lower capacitance suits >5 Gbps interfaces (e.g., USB3.0), but lacks integrated VP–VN Zener-requires external 0.1 µF bypass. | Select when ultra-low capacitance is critical and board space allows discrete bypass cap placement near VP pin. |
| SP3243EEN-L/TR | 4-channel, 3.5 pF max capacitance, ±8 kV contact rating, SOIC-14 package with dedicated GND and VCC pins | Higher capacitance limits use to ≤480 Mbps interfaces (e.g., RS-232); larger footprint consumes 3× PCB area vs. MSOP-10. | Prefer for legacy industrial designs where SOIC hand-soldering or higher power dissipation (500 mW) is required. |
Compared with TPD4E001DRYR and SP3243EEN-L/TR, CM1293A-04MR uniquely balances low 2.0 pF capacitance, integrated Zener rail clamping, and compact MSOP-10 packaging-making it optimal for space-constrained HDMI/DVI/SATA designs where supply rail stability and signal fidelity are co-prioritized.
Availability
CM1293A-04MR is available at Aetrix Electronics and suitable for HDMI interface protection, DVI port hardening, SATA data line safeguarding, and USB2.0 high-speed port shielding requiring stable component supply across production lifecycles.
Supply support for CM1293A-04MR 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 specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The CM1293A-04MR belongs to onsemi's low-capacitance ESD protection array product line-engineered specifically for high-speed serial interfaces where minimal signal loading and robust transient immunity must coexist in miniature packages.
FAQ
What is the maximum operating voltage range supported by the CM1293A-04MR?
The CM1293A-04MR supports an operating supply voltage range of 3.3 V to 5.5 V between VP and VN rails, as specified in Table 3 of the official datasheet. This range accommodates common interface voltages used in HDMI, DVI, and SATA applications while maintaining reliable ESD clamping performance and low leakage current below ±1.0 µA.
Does the CM1293A-04MR require external bypass capacitors for ESD protection functionality?
No, the CM1293A-04MR integrates a Zener diode between VP and VN rails, which actively clamps supply rail excursions during ESD events-eliminating the need for external bypass capacitors in most designs. However, for lowest possible clamp voltage under extreme conditions, a 0.22 µF ceramic capacitor between VP and ground is recommended per onsemi application guidance.
How many ESD strikes can the CM1293A-04MR withstand before performance degradation?
The CM1293A-04MR is validated to withstand over 1000 ±8 kV contact discharge ESD strikes per IEC 61000−4−2 Level 4, tested continuously at 1-second intervals. Post-test verification confirms all electrical parameters-including leakage current, capacitance, and clamp voltage-remain within datasheet specifications, ensuring long-term reliability in end-user environments.
What is the channel-to-channel capacitance of the CM1293A-04MR, and why does it matter?
The CM1293A-04MR exhibits 1.5 pF typical capacitance between I/O channels (CIO), a critical parameter for differential signaling. Low inter-channel capacitance minimizes crosstalk-induced jitter and skew-preserving signal integrity on tightly spaced HDMI TMDS or SATA differential pairs where timing margins are sub-nanosecond.
Is the CM1293A-04MR RoHS compliant and lead-free?
Yes, the CM1293A-04MR is manufactured in a Pb-free MSOP-10 package (Case 846AE) and fully complies with RoHS Directive 2011/65/EU. The "MR" suffix explicitly denotes Pb-free construction, and onsemi certifies full conformance to JEDEC J-STD-609A Class 3 marking standards for lead-free components.
CM1293A-04MR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- 9.9V (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:
- 10-MSOP
CM1293A-04MR FAQ
1.How can I place an order for CM1293A-04MR through Aetrix?
Please submit a Request for Quotation (RFQ) for CM1293A-04MR 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 CM1293A-04MR reliable?
The price and inventory of CM1293A-04MR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CM1293A-04MR is usually 5 days.
3.What payment methods are accepted for CM1293A-04MR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CM1293A-04MR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CM1293A-04MR?
CM1293A-04MR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CM1293A-04MR 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 CM1293A-04MR?
For technical support, including CM1293A-04MR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CM1293A-04MR requirements.
6.How does Aetrix verify that CM1293A-04MR is sourced from the original manufacturer or authorized distributors?
All CM1293A-04MR 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 CM1293A-04MR meets industry standards.
7.What is the process for return or replacement of CM1293A-04MR?
All CM1293A-04MR units undergo pre-shipment inspection (PSI). If there is an issue with CM1293A-04MR, 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 CM1293A-04MR part is unused and in its original packaging.
Return procedure for CM1293A-04MR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CM1293A-04MR 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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