My Inquiry
My Account
STMicroelectronics ESDA25P35-1U1M
- Part No.:
- ESDA25P35-1U1M
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
ESDA25P35-1U1M.pdf
- Description:
- TVS DIODE 22VWM 41VC 1610
- Quantity:
- Payment:
- Shipping:
Inventory:32,931
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ESDA25P35-1U1M from STMicroelectronics is a unidirectional transient voltage suppressor (TVS) diode designed for I/O and power line ESD/EOS protection in high-voltage interfaces. It features 22.0 V stand-off voltage, 24.6 V typical breakdown at 1 mA, 41.0 V clamping voltage at 35 A (8/20 µs), 0.45 Ω dynamic resistance, and 195 pF line capacitance - optimized for USB-PD up to 20 V and battery charger port protection.
For engineers reviewing the ESDA25P35-1U1M datasheet, ESDA25P35-1U1M pinout, ESDA25P35-1U1M application, or ESDA25P35-1U1M equivalent, key selection criteria include clamping performance under 35 A surge, low leakage (<200 nA at 22 V), thermal stability up to 150 °C junction temperature, and QFN-2L footprint compatibility with space-constrained PCB layouts.
Technical Context
This TVS diode employs a silicon avalanche structure optimized for fast turn-on (sub-nanosecond response) and stable clamping across -55 °C to +150 °C operating range. Its unidirectional configuration protects positive-going transients on a single line referenced to ground, with cathode (Pin 2) tied to system ground and anode (Pin 1) connected to the protected line.
The device complies with IEC 61000-4-2 Level 4 (±30 kV contact/air discharge) and IEC 61000-4-5 (120 A, 8/20 µs), delivering 1400 W peak pulse power while maintaining low derating - enabled by low dynamic resistance (0.45 Ω) and thermally robust QFN-2L package construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 22.0 V - maximum continuous reverse voltage before leakage exceeds 200 nA; sets upper limit for safe operation in 20 V USB-PD and battery charger lines. |
| Breakdown Voltage (VBR) | 24.6 V typ. at 1 mA - precise avalanche threshold ensures reliable triggering just above normal operating voltage. |
| Clamping Voltage (VCL) | 41.0 V at 35 A (8/20 µs) - limits transient overvoltage seen by downstream ICs during lightning/surge events. |
| Dynamic Resistance (RD) | 0.45 Ω - low impedance during conduction minimizes voltage overshoot and improves energy handling consistency. |
| Line Capacitance (CI/O-GND) | 195 pF at 1 MHz - low enough for USB 2.0 signal integrity; not suitable for USB 3.x or high-speed differential pairs. |
| ESD Clamping (IEC 61000-4-2) | 31.0 V typ. at +8 kV contact discharge - protects sensitive PHYs and PMICs from electrostatic damage without latch-up. |
| Operating Junction Temp. | −55 °C to +150 °C - supports industrial and automotive under-hood environments without derating loss. |
Pinout & Package
ESDA25P35-1U1M uses a QFN-2L (1.6 mm × 1.0 mm) surface-mount package with exposed thermal pad (no electrical connection), rated MSL Level 1 and RoHS-compliant per ECOPACK2. The compact footprint reduces board area by 75% versus SOD-123FL.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Protected Line Input | Connected to Vbus, charger input, or I/O line; conducts surge current to ground when voltage exceeds VRM/VBR. |
| Pin 2 (Cathode) | Ground Reference | Tied directly to system ground plane; provides low-inductance return path essential for effective ESD clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional Protection | Enables asymmetric clamping for DC-biased lines (e.g., USB Vbus), avoiding forward conduction during normal operation. |
| Low Clamping Ratio | VCL/VBR = 41.0/24.6 ≈ 1.67 - superior voltage limiting vs. standard TVS diodes (>1.8–2.0), reducing stress on protected ICs. |
| High Surge Robustness | Rated for 1400 W peak pulse power (8/20 µs) - withstands repeated lightning surges without parameter drift or aging. |
| Thermal Stability | No power derating required up to +150 °C Tj - maintains full surge rating in high-temperature enclosures or near power stages. |
| Space-Saving Footprint | 1.6 mm × 1.0 mm QFN-2L - enables placement adjacent to connectors or IC pads where board real estate is constrained. |
Applications
| USB Type-C Vbus Protection | Battery Charger Port Protection |
|---|---|
|
Use Scenario: Protects the 20 V Vbus line of USB-C receptacles against ESD events during plug insertion and lightning-induced surges on host devices. IC Role / Device Role / Timing Role: Unidirectional TVS placed between Vbus and chassis/ground, acting as first-line transient shunt before PMIC input. Use Value: Limits clamping to 41.0 V at 35 A, ensuring downstream 24 V-rated PMICs remain within absolute maximum ratings during IEC 61000-4-5 testing. |
Use Scenario: Shields lithium-ion battery charging circuits from ESD during hot-plug events and conducted surges from AC adapters. IC Role / Device Role / Timing Role: Standoff-rated TVS on the BAT+ rail, triggered only during overvoltage transients while remaining fully blocking at 20 V nominal. Use Value: 22.0 V VRM and 24.6 V VBR prevent false triggering during 20 V USB-PD fast charging, while 31.0 V ESD clamping prevents gate oxide damage to charge FETs. |
| Industrial Power Supply Input | Medical Equipment Data Port |
|
Use Scenario: Guards 24 V DC input rails of PLC modules and motor drivers against field-induced surges and ESD from operator interaction. IC Role / Device Role / Timing Role: Primary line-to-ground transient suppressor mounted at connector entry point, upstream of bulk capacitors and regulators. Use Value: 1400 W peak power rating and −55 °C to +150 °C operation ensure reliability in uncontrolled ambient conditions without derating. |
Use Scenario: Safeguards isolated data ports (e.g., RS-485, CAN FD diagnostics) on patient monitors and infusion pumps from ESD during clinical handling. IC Role / Device Role / Timing Role: Low-capacitance (195 pF) unidirectional clamp on signal lines referenced to isolated ground, preserving signal integrity. Use Value: 31.0 V clamping at ±30 kV contact discharge meets IEC 60601-1-2 immunity requirements while minimizing risk of data corruption or reset events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDA20P50-1U1M | Lower VRM (18.0 V), higher IPP (40 A), lower VCL (31.0 V), higher capacitance (240 pF) | Better suited for 15–18 V systems (e.g., 12 V automotive accessory ports); less margin for 20 V USB-PD | Select when clamping voltage priority outweighs stand-off margin and board space is less constrained. |
| SMAJ24A | DO-214AC package (4.5 mm × 2.7 mm), 24 V VBR, 38.9 V VCL @ 32.2 A, 1000 pF capacitance | Higher parasitic capacitance limits use to low-speed lines; larger footprint increases routing inductance | Choose only if legacy DO-214AC layout exists and high-speed signal integrity is not required. |
Compared with ESDA20P50-1U1M and SMAJ24A, ESDA25P35-1U1M delivers optimal balance of 22 V stand-off headroom, 41 V clamping at 35 A, and ultra-low 195 pF capacitance in the smallest QFN-2L footprint - making it the preferred choice for next-generation USB-PD and compact medical power interfaces.
Availability
ESDA25P35-1U1M is available at Aetrix Electronics and suitable for USB Type-C Vbus protection, battery charger port hardening, and industrial 24 V DC input conditioning requiring stable component supply across long-life product cycles.
Supply support for ESDA25P35-1U1M 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, specializing in power management, analog, MEMS, and automotive-grade ICs with vertical manufacturing and broad industrial certification coverage.
This device belongs to the ESDAxxPxxx-1U1M series - engineered specifically for board-level ESD and surge protection in space-constrained, high-reliability applications including portable electronics, medical instrumentation, and industrial control systems.
FAQ
What is the maximum continuous reverse voltage ESDA25P35-1U1M can withstand?
The ESDA25P35-1U1M has a reverse stand-off voltage (VRM) of 22.0 V, meaning it blocks up to this DC or RMS voltage without significant leakage current (≤200 nA). This allows safe integration into 20 V USB-PD systems with 10% margin, preventing false triggering during normal operation while ensuring rapid avalanche conduction during transients.
How does ESDA25P35-1U1M perform under IEC 61000-4-5 surge testing?
Per DS14419 Rev 4, ESDA25P35-1U1M sustains 35 A peak pulse current (8/20 µs waveform) with a typical clamping voltage of 41.0 V. It complies with IEC 61000-4-5 up to 120 A (via series variants), and its 0.45 Ω dynamic resistance ensures consistent voltage limiting across temperature and repeated surges without degradation.
Can ESDA25P35-1U1M be used on high-speed data lines like USB 3.2 or PCIe?
No - with 195 pF line-to-ground capacitance, ESDA25P35-1U1M introduces excessive signal attenuation and impedance mismatch on SuperSpeed differential pairs. It is qualified for USB 2.0, UART, I²C, and low-speed analog lines, but not for >480 Mbps interfaces. For USB 3.x, ST recommends dedicated low-capacitance arrays such as ESDALC6-1BM2.
Is the QFN-2L package of ESDA25P35-1U1M compatible with standard reflow profiles?
Yes - the device is qualified per J-STD-020 MSL Level 1 and supports ST's recommended lead-free reflow profile: peak temperature 240–245 °C, ramp rate ≤3 °C/s, and time above 217 °C limited to 60–90 seconds. Its exposed thermal pad requires no solder paste stencil opening but benefits from thermal relief in ground plane connections.
ESDA25P35-1U1M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 2-UDFN
- Series:
- ESDA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 23.3V
- Voltage - Clamping (Max) @ Ipp:
- 41V
- Current - Peak Pulse (10/1000µs):
- 35A (8/20µs)
- Power - Peak Pulse:
- 1400W (1.4kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 1610
ESDA25P35-1U1M FAQ
1.How can I place an order for ESDA25P35-1U1M through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDA25P35-1U1M 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 ESDA25P35-1U1M reliable?
The price and inventory of ESDA25P35-1U1M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDA25P35-1U1M is usually 5 days.
3.What payment methods are accepted for ESDA25P35-1U1M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDA25P35-1U1M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDA25P35-1U1M?
ESDA25P35-1U1M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDA25P35-1U1M 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 ESDA25P35-1U1M?
For technical support, including ESDA25P35-1U1M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDA25P35-1U1M requirements.
6.How does Aetrix verify that ESDA25P35-1U1M is sourced from the original manufacturer or authorized distributors?
All ESDA25P35-1U1M 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 ESDA25P35-1U1M meets industry standards.
7.What is the process for return or replacement of ESDA25P35-1U1M?
All ESDA25P35-1U1M units undergo pre-shipment inspection (PSI). If there is an issue with ESDA25P35-1U1M, 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 ESDA25P35-1U1M part is unused and in its original packaging.
Return procedure for ESDA25P35-1U1M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDA25P35-1U1M 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
