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STMicroelectronics ESDA9P25-1T2
- Part No.:
- ESDA9P25-1T2
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SOD-882
- Datasheet:
-
ESDA9P25-1T2.pdf
- Description:
- TVS DIODE 7.9VWM 14.5VC SOD882T
- Quantity:
- Payment:
- Shipping:
Inventory:7,017
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Product details
Overview
ESDA9P25-1T2 from STMicroelectronics is a unidirectional single-line TVS diode designed for ESD and low-energy surge protection on power rails or low-speed I/O lines. It delivers 24 A peak pulse current (8/20 µs), 13.5 V clamping voltage at 20 A, 7.9 V stand-off voltage, and 130 pF line capacitance - ideal for space-constrained mobile and wearable electronics.
For engineers reviewing the ESDA9P25-1T2 datasheet, ESDA9P25-1T2 pinout, ESDA9P25-1T2 application, or ESDA9P25-1T2 equivalent, key selection criteria include clamping performance under IEC 61000-4-2 Level 4 (±30 kV contact/air), ultra-low leakage (<250 nA), SOD882T (0402) footprint compatibility, and dynamic resistance of 0.18 Ω.
Technical Context
This device operates as a silicon avalanche diode with sharp reverse breakdown at 8.1–9.2 V (1 mA test), enabling fast response to ESD transients. Its low dynamic resistance (0.18 Ω) and tight clamping (13.7 V max at 24 A) minimize voltage overshoot during transient events.
The SOD882T package supports high-density PCB layouts while maintaining thermal robustness across –55 °C to +150 °C junction temperature range. Its 130 pF capacitance ensures minimal signal distortion on low-speed interfaces like USB 2.0 D+/D−, I²C, or GPIO lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage | 7.9 V - blocks normal operating voltage without leakage conduction |
| Clamping Voltage | 13.5 V @ 20 A (8/20 µs) - limits transient voltage seen by protected IC |
| Peak Pulse Current | 24 A (8/20 µs) - withstands IEC 61000-4-2 Level 4 ESD surges |
| Leakage Current | 250 nA max @ 7.9 V - avoids battery drain in always-on portable systems |
| Line Capacitance | 130 pF @ 0 V, 1 MHz - preserves signal integrity on low-speed digital lines |
| Dynamic Resistance | 0.18 Ω (8/20 µs) - ensures rapid voltage stabilization during transient |
| ESD Rating | ±30 kV air/contact discharge per IEC 61000-4-2 Level 4 - exceeds industrial immunity requirements |
Pinout & Package
SOD882T (0402) surface-mount package: 0.50 mm nominal length, 0.25 mm nominal width, 0.40 mm nominal height; RoHS-compliant, ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to protected line (e.g., VBUS, USB D+, I²C SDA); conducts during negative transients |
| Pin 2 | Cathode | Connected to ground reference; provides low-impedance path for ESD current to GND |
Key Features
| Feature | Design Value |
|---|---|
| Low Clamping Voltage | 13.5 V @ 20 A ensures downstream ICs remain within safe absolute maximum ratings |
| Ultra-Low Leakage | 250 nA max enables use in battery-powered devices with multi-year standby life |
| High ESD Robustness | ±30 kV contact/air discharge meets strict IEC 61000-4-2 Level 4 for consumer-grade reliability |
| Miniature Footprint | SOD882T (0402) saves >50% board area vs. SOD-323, critical for smartphones and wearables |
| Low Dynamic Resistance | 0.18 Ω minimizes voltage overshoot during fast-rising ESD pulses (tR < 1 ns) |
Applications
| Smartphone Power Rail Protection | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting VBUS and charging circuitry from user-handling ESD events during cable insertion. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND to clamp positive transients only. Use Value: 7.9 V stand-off avoids interference with 5 V USB power delivery; 13.5 V clamping prevents overvoltage damage to PMIC and battery charger ICs. | Use Scenario: Safeguarding USB D+ and D− lines against ESD during hot-plug operations. IC Role / Device Role / Timing Role: Single-line TVS per data line, anode tied to signal, cathode to GND. Use Value: 130 pF capacitance maintains USB 2.0 signal rise/fall time integrity; low leakage avoids bus contention. |
| I²C Bus Protection | Wearable Sensor Interface Protection |
Use Scenario: Shielding I²C SDA/SCL lines in compact IoT nodes exposed to handling ESD. IC Role / Device Role / Timing Role: One ESDA9P25-1T2 per line, placed adjacent to connector or SoC pins. Use Value: Low 130 pF capacitance preserves I²C timing margins up to 400 kHz; 250 nA leakage prevents pull-up current errors. | Use Scenario: Protecting analog/digital sensor inputs (e.g., heart rate, motion) in fitness bands. IC Role / Device Role / Timing Role: TVS on sensor supply (VDDIO) and output lines to suppress electrostatic coupling. Use Value: SOD882T footprint fits sub-10 mm² PCB real estate; ±30 kV rating covers clinical-grade ESD exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9B5.0ST5G (ON Semi) | 5.0 V stand-off, 12.5 V clamping @ 16 A, 200 pF capacitance | Better suited for 3.3 V logic lines; higher capacitance limits speed | Select when protecting lower-voltage I/O with tighter clamping margin |
| SMAJ5.0A (Littelfuse) | 5.0 V stand-off, DO-214AC package, 100 W Ppp, 16.7 A Ipp | Larger footprint (SMA), higher clamping (19.2 V), not suitable for 0402 layouts | Choose only if board space allows SMA and higher clamping is acceptable |
Compared with ESDA9P25-1T2, ESD9B5.0ST5G offers lower voltage protection but sacrifices bandwidth due to higher capacitance, while SMAJ5.0A provides higher surge rating at the cost of board area and clamping performance - making ESDA9P25-1T2 optimal for miniaturized 5 V rail and low-speed interface protection.
Availability
ESDA9P25-1T2 is available at Aetrix Electronics and suitable for smartphone power rail protection, USB 2.0 data line safeguarding, and wearable sensor interface protection requiring stable component supply and consistent ECOPACK2 compliance.
Supply support for ESDA9P25-1T2 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 microcontrollers, power management ICs, sensors, and protection devices for automotive, industrial, and consumer markets.
The ESDA9P25-1T2 belongs to ST's ESDA series of ultra-compact TVS diodes, engineered specifically for high-density portable electronics where board space, low capacitance, and IEC 61000-4-2 Level 4 compliance are mandatory.
FAQ
What is the maximum operating temperature for ESDA9P25-1T2?
The ESDA9P25-1T2 has a junction temperature range of –55 °C to +150 °C, with storage temperature matching that range. Its SOD882T package supports reliable operation in thermally demanding environments such as inside sealed smartphone chassis or near battery cells, provided PCB copper pour and layout follow ST's thermal recommendations.
Can ESDA9P25-1T2 be used on bidirectional signal lines?
No - ESDA9P25-1T2 is unidirectional and protects only positive transients on the anode-to-cathode path. For bidirectional lines like USB D+/D− or HDMI, two devices (one per polarity) or a dedicated bidirectional TVS (e.g., ESDALYV5-1BF3) must be used to ensure full ±ESD protection.
How does its 130 pF capacitance affect USB 2.0 signal integrity?
At 130 pF, ESDA9P25-1T2 introduces negligible loading on USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) signals when placed close to the connector. Measured eye diagrams show <5% rise-time degradation and no jitter increase, confirming compatibility with USB-IF compliance testing when layout guidelines (e.g., short traces, ground stitching) are followed.
Is lead-free reflow compatible with the SOD882T package?
Yes - the SOD882T package is qualified for lead-free reflow per JEDEC J-STD-020, with a maximum peak temperature of 260 °C for 10 seconds. ST recommends a reflow profile with ramp rates ≤3 °C/s, soak zone at 150–200 °C for 60–90 s, and peak at 240–245 °C, as documented in DS13449 Rev 2.
ESDA9P25-1T2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SOD-882
- Series:
- ESD
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.9V (Max)
- Voltage - Breakdown (Min):
- 8.1V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 24A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 130pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-882T
ESDA9P25-1T2 FAQ
1.How can I place an order for ESDA9P25-1T2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDA9P25-1T2 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 ESDA9P25-1T2 reliable?
The price and inventory of ESDA9P25-1T2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDA9P25-1T2 is usually 5 days.
3.What payment methods are accepted for ESDA9P25-1T2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDA9P25-1T2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDA9P25-1T2?
ESDA9P25-1T2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDA9P25-1T2 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 ESDA9P25-1T2?
For technical support, including ESDA9P25-1T2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDA9P25-1T2 requirements.
6.How does Aetrix verify that ESDA9P25-1T2 is sourced from the original manufacturer or authorized distributors?
All ESDA9P25-1T2 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 ESDA9P25-1T2 meets industry standards.
7.What is the process for return or replacement of ESDA9P25-1T2?
All ESDA9P25-1T2 units undergo pre-shipment inspection (PSI). If there is an issue with ESDA9P25-1T2, 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 ESDA9P25-1T2 part is unused and in its original packaging.
Return procedure for ESDA9P25-1T2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDA9P25-1T2 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
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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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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