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onsemi SZESDR0502BT1G
- Part No.:
- SZESDR0502BT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-75, SOT-416
- Datasheet:
-
SZESDR0502BT1G.pdf
- Description:
- TVS DIODE 5VWM 15VC SC75 SOT416
- Quantity:
- Payment:
- Shipping:
Inventory:3,267
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Product details
Overview
SZESDR0502BT1G from onsemi is an ultra-low-capacitance ESD protection diode designed to safeguard voltage-sensitive ICs in high-speed signal paths. It delivers 0.5 pF typical capacitance (0.25 pF bi-directional), ±9 kV IEC 61000-4-2 contact ESD protection, and 0.45 V clamping voltage at 1 A, making it ideal for USB 2.0 high-speed and antenna line protection.
For engineers reviewing the SZESDR0502BT1G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low capacitance preservation of signal integrity, AEC-Q101 qualification for automotive use, SC-75 package constraints, and dual-line vs. bi-directional configuration trade-offs.
Technical Context
The SZESDR0502BT1G is a unidirectional dual-cathode ESD suppressor configured as two parallel cathodes (Pins 1 & 2) tied to a common anode (Pin 3), enabling protection of either two uni-directional lines or one bi-directional line. Its low-leakage silicon diode structure achieves sub-nanosecond response (<1.0 ns) and clamps transients with minimal voltage overshoot.
Capacitance is measured between Pin 1–Pin 3 and Pin 2–Pin 3 for unidirectional mode (0.5 pF typ.), and between Pin 1–Pin 2 for bi-directional mode (0.25 pF typ.). The 5 V stand-off voltage ensures compatibility with 3.3 V and 5 V I/O rails without leakage-induced logic errors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance (uni-dir) | 0.5 pF typical - preserves signal integrity on USB 2.0 (480 Mbps) and RF antenna lines |
| Capacitance (bi-dir) | 0.25 pF typical - enables lowest possible loading on single high-frequency bidirectional data lines |
| Clamping Voltage | 0.45 V max @ 1 A - limits transient overvoltage to safe levels for 1.8 V/3.3 V interface ICs |
| Stand-off Voltage | 5 V - blocks normal operation voltages while allowing ESD-triggered conduction |
| ESD Rating | ±9 kV contact per IEC 61000-4-2 Level 4 - exceeds industrial and automotive immunity requirements |
| Response Time | <1.0 ns - activates before sensitive circuitry sustains damage during fast ESD events |
| Leakage Current | 1.0 µA max @ 5 V - avoids DC loading or false triggering on low-power sensor interfaces |
Pinout & Package
Package: SC-75 (Case 463, Style 4), 1.60 mm × 0.80 mm × 0.80 mm body, MSL 1, Pb-free, matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | First protected line cathode; connects to I/O trace requiring ESD clamp to ground |
| Pin 2 | Cathode | Second protected line cathode; electrically isolated from Pin 1 for dual-line protection |
| Pin 3 | Anode | Common anode tied to system ground; forms two independent clamping diodes (1→3 and 2→3) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.5 pF (uni-dir) / 0.25 pF (bi-dir) - maintains impedance matching and rise-time fidelity on >100 MHz signals |
| AEC-Q101 qualified | Automotive-grade reliability with PPAP capability - supports deployment in infotainment, ADAS, and body control modules |
| Low clamping voltage | 0.45 V max @ 1 A - prevents latch-up and oxide breakdown in sub-28 nm CMOS I/O cells |
| SC-75 footprint | 1.60 mm × 0.80 mm - fits tight spacing around USB connectors, SIM card slots, and RF front-end modules |
| IEC 61000-4-2 Level 4 | ±9 kV contact discharge - meets end-equipment certification requirements without external filtering |
Applications
| USB 2.0 High-Speed Interface | Cellular Antenna Feed Line |
|---|---|
Use Scenario: Protecting D+ and D− differential pair in portable USB peripherals against user-hand ESD events. IC Role / Device Role: Dual-cathode ESD clamp placed directly at connector, shunting transients to ground before reaching PHY IC. Use Value: 0.5 pF capacitance avoids signal degradation at 480 Mbps; ±9 kV rating ensures pass/fail compliance in USB-IF testing. | Use Scenario: Shielding LTE/5G antenna feed path from ESD coupling via metal bezel or display frame. IC Role / Device Role: Bi-directional clamp (Pins 1–2) inserted in series with antenna trace to suppress both positive/negative transients. Use Value: 0.25 pF effective capacitance minimizes insertion loss and VSWR shift across 700 MHz–6 GHz bands. |
| Automotive Infotainment Display Port | Industrial Sensor Interface (I²C/SPI) |
Use Scenario: Guarding MIPI D-PHY lanes between head unit SoC and TFT display against dashboard ESD. IC Role / Device Role: Two independent clamps (Pin 1→3 and Pin 2→3) applied to clock and data lanes separately. Use Value: AEC-Q101 qualification guarantees operation at −40°C to +125°C junction temperature under vibration and thermal cycling. | Use Scenario: Securing low-voltage I²C bus (3.3 V) connecting microcontroller to environmental sensors in factory automation. IC Role / Device Role: Uni-directional clamp on SDA/SCL lines referenced to local ground plane, leveraging 5 V stand-off margin. Use Value: 1.0 µA max leakage prevents bus contention or false ACK/NACK generation in multi-drop configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDR0502BT1G | 0.5 pF uni-dir, SC-75, AEC-Q101 qualified | Automotive and high-reliability industrial use | Preferred where AEC-Q101 compliance and bi-directional 0.25 pF mode are required |
| TPD2E001DRYR | 1.0 pF uni-dir, SOT-553, no AEC-Q101 | Consumer electronics with lower ESD severity requirements | Select when board space allows larger package and automotive qualification is unnecessary |
Compared with TPD2E001DRYR, SZESDR0502BT1G offers half the capacitance and automotive qualification but requires precise SC-75 placement; compared with non-SZ variants like ESDR0502BT1G, SZESDR0502BT1G adds site-specific process controls and PPAP documentation for OEM supply chains.
Availability
SZESDR0502BT1G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, cellular antenna feed line hardening, and automotive infotainment display port ESD suppression requiring stable component supply and long-term lifecycle assurance.
Supply support for SZESDR0502BT1G 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 power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
The ESDR0502B family is engineered specifically for ultra-high-frequency signal line protection, targeting applications where sub-1 pF capacitance and sub-1 ns response are mandatory to preserve data integrity.
FAQ
What is the pin configuration of SZESDR0502BT1G?
SZESDR0502BT1G uses SC-75 package with Pin 1 = Cathode, Pin 2 = Cathode, Pin 3 = Anode. This dual-cathode layout supports either two independent uni-directional lines (Pins 1→3 and 2→3) or one bi-directional line (Pins 1↔2). The anode must be connected to system ground for proper clamping operation.
Does SZESDR0502BT1G support bi-directional ESD protection?
Yes, SZESDR0502BT1G supports bi-directional protection by using Pins 1 and 2 as symmetrical terminals with Pin 3 grounded - forming a back-to-back diode structure. In this mode, effective capacitance drops to 0.25 pF, verified per datasheet Note 4, making SZESDR0502BT1G suitable for high-frequency differential or RF signal lines.
Is SZESDR0502BT1G qualified for automotive applications?
Yes, SZESDR0502BT1G is AEC-Q101 qualified and PPAP capable. The "SZ" prefix denotes automotive-grade manufacturing controls, including enhanced process monitoring, lot traceability, and extended temperature validation (−55°C to +150°C junction). This makes SZESDR0502BT1G appropriate for infotainment, telematics, and ADAS subsystems.
What is the maximum working voltage for SZESDR0502BT1G?
The maximum working peak reverse voltage (VRWM) for SZESDR0502BT1G is 5 V, meaning it reliably blocks DC voltages up to 5 V in normal operation while remaining inactive. This rating ensures compatibility with 3.3 V and 5 V digital I/O rails without leakage-induced logic errors or power drain in the SZESDR0502BT1G device.
How does SZESDR0502BT1G compare to standard TVS diodes in ESD protection?
SZESDR0502BT1G differs from general-purpose TVS diodes by optimizing for ultra-low capacitance (0.5 pF) and sub-1 ns response - critical for high-speed interfaces. Standard TVS diodes typically exceed 10 pF and respond in tens of nanoseconds, causing signal distortion. SZESDR0502BT1G is purpose-built for signal integrity preservation, not bulk surge handling.
SZESDR0502BT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-75, SOT-416
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 5.8V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- 20W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 0.5pF @ 1MHz, 0.25pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-75, SOT-416
SZESDR0502BT1G FAQ
1.How can I place an order for SZESDR0502BT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESDR0502BT1G 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 SZESDR0502BT1G reliable?
The price and inventory of SZESDR0502BT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESDR0502BT1G is usually 5 days.
3.What payment methods are accepted for SZESDR0502BT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESDR0502BT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESDR0502BT1G?
SZESDR0502BT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESDR0502BT1G 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 SZESDR0502BT1G?
For technical support, including SZESDR0502BT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESDR0502BT1G requirements.
6.How does Aetrix verify that SZESDR0502BT1G is sourced from the original manufacturer or authorized distributors?
All SZESDR0502BT1G 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 SZESDR0502BT1G meets industry standards.
7.What is the process for return or replacement of SZESDR0502BT1G?
All SZESDR0502BT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZESDR0502BT1G, 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 SZESDR0502BT1G part is unused and in its original packaging.
Return procedure for SZESDR0502BT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZESDR0502BT1G Tags
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