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STMicroelectronics ESDA25SC6
- Part No.:
- ESDA25SC6
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
ESDA25SC6.pdf
- Description:
- TVS DIODE 24VWM SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:129,856
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Product details
Overview
ESDA25SC6 from STMicroelectronics is a quad unidirectional Transil™ ESD protection array in SOT23-6L package, designed to clamp transients above 25 V (min) breakdown voltage while delivering 400 W peak pulse power (8/20 µs), 9 A peak pulse current, and 24 V clamping voltage at 9 A - deployed on high-density data lines in cellular handsets and USB interfaces.
For engineers reviewing the ESDA25SC6 datasheet, ESDA25SC6 pinout, ESDA25SC6 application, or ESDA25SC6 equivalent, key selection criteria include standoff voltage (24 V), low leakage (<1 µA @ 24 V), 60 pF capacitance at 0 V, and compliance with IEC 61000-4-2 Level 4 (±30 kV contact/air discharge) for robust board-level ESD hardening.
Technical Context
The ESDA25SC6 integrates four independent unidirectional avalanche diodes in a single monolithic silicon chip, each configured as a cathode-to-rail clamp: positive transients are clamped just above VCC, negative transients to ~–0.7 V below ground via forward conduction. It operates across –55 °C to +150 °C junction temperature range.
Its dynamic clamping behavior is defined by 9 Ω typical dynamic resistance and 60 pF junction capacitance (at 0 V), enabling protection of high-speed signal lines (e.g., USB 2.0, HDMI DDC) without signal integrity degradation - validated under MIL-STD-883E Class 3B HBM and IEC 61000-4-2 test waveforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min | 25 V - ensures reliable triggering only above system rail voltage, preventing false clamping during normal operation |
| VCL @ IPP=9 A | 24 V - limits transient voltage seen by protected IC to safe margin below logic supply tolerance |
| C @ 0 V | 60 pF - low enough to avoid signal rise-time degradation on 480 Mbps USB 2.0 data lines |
| IRM @ VRM=24 V | <1 µA - negligible standby current draw, critical for battery-powered handset applications |
| PPP (8/20 µs) | 400 W - sustains multiple ESD strikes without parametric shift or failure |
| Rd typ | 9 Ω - determines voltage overshoot during fast transient events (V = I × Rd) |
| Tj range | –55 °C to +150 °C - supports automotive infotainment and industrial control environments |
Pinout & Package
SOT23-6L (SC-59) thermally enhanced plastic package with gull-wing leads, RoHS-compliant and ECOPACK® certified, footprint compatible with JEDEC MO-178AB standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Channel 1 | Connects to protected signal line; conducts during negative ESD events |
| 2 | Cathode of Channel 1 | Connects to VCC; clamps positive transients to ~VCC + 0.7 V |
| 3 | Anode of Channel 2 | Second protected signal input; electrically isolated from Channel 1 |
| 4 | Cathode of Channel 2 | Second VCC-referenced clamp node |
| 5 | Anode of Channel 3 | Third independent ESD path; enables multi-line protection in compact layout |
| 6 | Cathode of Channel 3 | Third VCC clamp terminal; shared cathode topology reduces PCB routing complexity |
Key Features
| Feature | Design Value |
|---|---|
| Quad unidirectional architecture | Four independent clamping paths in one 6-pin package - eliminates discrete diode arrays and saves >2.5 mm² PCB area |
| IEC 61000-4-2 Level 4 compliance | Withstands ±30 kV air/contact discharge - meets global regulatory requirements for consumer handhelds |
| Low 60 pF capacitance | Preserves signal edge integrity on 480 Mbps USB 2.0 differential pairs without equalization overhead |
| Monolithic silicon construction | Guarantees matched clamping thresholds and timing across all four channels - no channel-to-channel skew |
| ECOPACK® lead-free finish | Meets RoHS Directive 2011/65/EU and JEDEC JESD97 marking standards - traceable sourcing for automotive OEMs |
Applications
| USB 2.0 Data Lines | Cellular Handset Keypad Interface |
|---|---|
Use Scenario: Protecting D+ and D– lines against user-handling ESD in smartphone docking stations and OTG adapters. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed between connector and USB transceiver IC, triggered within <1 ns of ESD onset. Use Value: Prevents latch-up or gate oxide damage in USB PHY by limiting transient voltage to 24 V while adding only 60 pF loading. | Use Scenario: Shielding mechanical keypad scan lines from ESD during button press in GSM/UMTS handsets. IC Role / Device Role / Timing Role: Rail-to-rail transient suppressor on row/column matrix lines, referenced to 2.8 V or 3.3 V supply. Use Value: Enables direct connection of keypad to baseband processor GPIO without series resistors or RC filters. |
| HDMI DDC Channel | Industrial Serial Port (RS-232/485) |
Use Scenario: Safeguarding HDMI Display Data Channel (SCL/SDA) pins against ESD during cable insertion in set-top boxes. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional clamp referenced to 3.3 V, handling both hot-plug and static discharge events. Use Value: Maintains I²C timing margins (400 kHz max) with sub-100 ps response and no DC loading beyond 1 µA leakage. | Use Scenario: Protecting RS-232 driver/receiver enable lines and control signals in factory automation HMIs. IC Role / Device Role / Timing Role: High-energy transient absorber on logic-level control inputs exposed to noisy 24 V industrial environments. Use Value: Survives repeated 400 W pulses without parameter drift, ensuring long-term reliability in unattended equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDA14V2SC6 | Lower VBR (14.2 V min), higher C (100 pF), lower VCL (12 V @ 14 A) | Better suited for 12–15 V rail systems; excessive clamping margin on 24 V lines may cause premature conduction | Select when protecting 3.3 V or 5 V logic with tighter clamping voltage budget |
| SMF24CTHE3 | Single-channel SOD-123, 24 V VBR, 200 W PPP, 120 pF - not quad-integrated | Requires four discrete devices and more PCB area; lacks channel matching and thermal coupling benefits | Choose only if SOT23-6L footprint is unavailable or legacy design reuse mandates SOD-123 |
Compared with ESDA14V2SC6 and SMF24CTHE3, ESDA25SC6 delivers optimal balance of high-voltage margin (25 V), low capacitance (60 pF), and integrated quad topology - making it uniquely suitable for 24 V-tolerant, space-constrained data interfaces requiring repeatable ESD immunity.
Availability
ESDA25SC6 is available at Aetrix Electronics and suitable for cellular handset design, USB peripheral manufacturing, HDMI-enabled set-top box production, and industrial serial interface development requiring stable component supply across extended product lifecycles.
Supply support for ESDA25SC6 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
The ESDAxxSCx series belongs to ST's Transil™ ESD protection portfolio, engineered specifically for board-level I/O hardening in high-density portable electronics where space, signal fidelity, and regulatory compliance are co-constrained.
FAQ
What is the maximum operating temperature for ESDA25SC6?
The ESDA25SC6 has a specified operating junction temperature range of –55 °C to +150 °C, verified per Table 2 of the official datasheet (DocID7056 Rev 10). This allows deployment in under-hood automotive modules and industrial controllers without derating, provided PCB copper pour and airflow meet thermal resistance targets for 400 W pulse dissipation.
Does ESDA25SC6 support bidirectional signal lines like USB D+/D–?
ESDA25SC6 is unidirectional but supports bidirectional data lines by using two channels per differential pair - one channel clamping D+ to VCC, another clamping D– to VCC. Its architecture avoids ground-referenced conduction paths that would disrupt common-mode signaling, unlike bidirectional TVS arrays.
Can ESDA25SC6 replace older ESDA25SC5 in existing designs?
No - ESDA25SC6 uses SOT23-6L (6-pin) while ESDA25SC5 uses SOT23-5L (5-pin); pin count and layout are incompatible. The extra pin enables independent cathode routing per channel, improving noise isolation. Migration requires PCB redesign and validation of clamping waveform symmetry.
Is ECOPACK® compliance documented for ESDA25SC6?
Yes - ECOPACK® certification is explicitly stated in Section 3 ("Package information") of DocID7056 Rev 10, confirming lead-free finish, UL94 V0 epoxy, and JEDEC JESD97 second-level interconnect marking. Inner box labels carry full compliance codes required for automotive PPAP submissions.
ESDA25SC6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SOT-23-6
- Series:
- ESDA, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 25V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
ESDA25SC6 FAQ
1.How can I place an order for ESDA25SC6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDA25SC6 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 ESDA25SC6 reliable?
The price and inventory of ESDA25SC6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDA25SC6 is usually 5 days.
3.What payment methods are accepted for ESDA25SC6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDA25SC6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDA25SC6?
ESDA25SC6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDA25SC6 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 ESDA25SC6?
For technical support, including ESDA25SC6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDA25SC6 requirements.
6.How does Aetrix verify that ESDA25SC6 is sourced from the original manufacturer or authorized distributors?
All ESDA25SC6 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 ESDA25SC6 meets industry standards.
7.What is the process for return or replacement of ESDA25SC6?
All ESDA25SC6 units undergo pre-shipment inspection (PSI). If there is an issue with ESDA25SC6, 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 ESDA25SC6 part is unused and in its original packaging.
Return procedure for ESDA25SC6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDA25SC6 Tags
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onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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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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