AQ15-02HTG - 15V 500W 2-Channel TVS Diode Array | Littelfuse
N.º de pieza: AQ15-02HTG ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0.65 | $0,65 |
| 10 | $0.58 | $5,80 |
| 100 | $0.48 | $48,00 |
| 500 | $0.4 | $200,00 |
| 1.000 | $0.32 | $320,00 |
AQ15-02HTG Descripción general
A TVS diode array is a class of discrete semiconductor protection device that uses avalanche-breakdown junctions to clamp transient overvoltages to safe levels in microseconds. TVS arrays sit in the protection-component hierarchy between simple Zener clamps and multi-stage gas-discharge or polymer suppressors, and they belong to the broader category of circuit-protection semiconductors. By integrating two steering diodes and a central TVS die in a single 3-pin package, the AQxx-02HTG series provides differential or single-ended protection on data lines and power rails without requiring multiple discrete components.
Key features include ±30 kV ESD protection per IEC 61000-4-2 (contact and air discharge), ultra-low capacitance of 85 pF suitable for high-speed interfaces, low clamping voltage of 30 V at 15 A peak pulse current, and a low leakage current of 1 µA at the working voltage. The SOT-23-3 package is footprint-compatible with industry-standard 3-pin SOT-23 outlines, enabling drop-in placement on existing PCB layouts.
The AQ15-02HTG uses an avalanche-junction TVS structure combined with low-capacitance steering diodes, achieving sub-nanosecond turn-on time. This architecture absorbs repetitive strikes without performance degradation, making it ideal for industrial and automotive environments exposed to frequent ESD events. The 85 pF line capacitance is acceptable for CAN, RS-485, and general-purpose I/O protection but should be evaluated for USB 2.0 high-speed data lines where lower capacitance is preferred.
Typical applications include industrial CAN bus protection, RS-485 transceiver protection, automotive ECU I/O protection, sensor interface protection, factory automation I/O, and consumer electronics ESD protection on USB and HDMI ports. The AQxx-02HTG series is AEC-Q101 qualified for automotive use.
When designing with this device, place the AQ15-02HTG as close as possible to the connector or ESD entry point, keep the trace between the protected IC and the TVS short, and provide a low-impedance ground return to the chassis or earth ground. Avoid routing protected traces beneath the device to minimize parasitic coupling.
This page synthesizes distributor pricing, drop-in alternatives, and practical layout guidance not aggregated in the manufacturer datasheet, giving engineers a single reference for component selection, BOM risk mitigation, and PCB design.
Alternativas directas para AQ15-02HTG — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
AQ24-02HTG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AQ12-02HTG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AQ05-02HTG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SP3010-04UTG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
NUP2105LT1G
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ESD5V0S1B-N
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AQ15-02HTG Valores máximos y características eléctricas
| Manufacturer | Littelfuse |
| Series | AQxx-02HTG |
| Device Type | TVS Diode Array (2-channel) |
| Encapsulado | SOT-23-3 |
| Tipo de montaje | Surface Mount |
| Working Voltage (Vrwm) | 15 V |
| Breakdown Voltage (Vbr) | 16.7 V (typ) |
| Clamping Voltage (Vc) | 30 V at 15 A (8/20 µs) |
| Peak Pulse Current (Ipp) | 15 A (8/20 µs) |
| Peak Pulse Power (Ppp) | 500 W (8/20 µs) |
| Leakage Current | 1 µA (max) |
| Capacitance | 85 pF (typ) |
| ESD Protection (Contact/Air) | ±30 kV (IEC 61000-4-2) |
| EFT Protection | Per IEC 61000-4-5 |
| Temperatura de funcionamiento | -40 °C to +150 °C (AEC-Q101 grade) |
| AEC-Q101 Qualified | Yes (automotive grade) |
| Estado RoHS | Compliant |
Configuración de pines de AQ15-02HTG
| Pin 1 | Line 1 — Channel 1 I/O (protected line) |
| Pin 2 | Line 2 — Channel 2 I/O / common (protected line) |
| Pin 3 | GND — Ground reference for both channels |
Aplicaciones típicas
AQ15-02HTG es adecuado para 6 aplicacións: Automotive CAN Bus Protection, Industrial RS-485 Interface Protection, USB Vbus and Data Line ESD Protection, Sensor I/O Protection in Industrial PLCs, Automotive ECU Power Rail Protection, HDMI / DisplayPort ESD Protection.
Automotive CAN Bus Protection
The AQ15-02HTG's 15 V working voltage matches the 12 V automotive CAN bus rail (which transients up to 18 V during cranking), making it ideal for protecting CAN transceiver I/O pins from ESD and load-dump surges. The device's ±30 kV IEC 61000-4-2 rating absorbs direct human contact discharge during assembly and field service, while the 500 W (8/20 µs) pulse rating handles alternator-induced transients common under the hood. Place the AQ15-02HTG as close as possible to the CAN connector pins, with short ground returns to chassis ground, and route the protected CANH/CANL traces directly to the transceiver to minimize parasitic inductance.
Recomendado
Industrial RS-485 Interface Protection
The AQ15-02HTG protects industrial RS-485 transceiver data lines from ESD and surge events at the bus connector. Its 85 pF line capacitance preserves signal integrity up to 10 Mbps (sufficient for RS-485 and CAN), while the 30 V clamping voltage safely limits transient excursions that would otherwise exceed transceiver absolute maximum ratings (±15 V typical for RS-485). In factory automation environments with motor drives and solenoids, the AQ15-02HTG's ±30 kV ESD and EFT protection prevents field failures from cable discharge and operator-handling transients.
Recomendado
USB Vbus and Data Line ESD Protection
The AQ15-02HTG provides robust ESD protection on USB Vbus and the lower-speed D+/D- lines of USB 1.1 and USB 2.0 full-speed ports. With ±30 kV IEC 61000-4-2 contact discharge, it exceeds the USB-IF compliance test requirements and prevents user-accessible port failures from cable insertion events. The 1 µA leakage current ensures minimal impact on Vbus rail accuracy, and the 15 V working voltage tolerates USB BC 1.2 charging voltages up to 12 V. For USB 2.0 high-speed data lines, consider the lower-capacitance Littelfuse SP3010-04UTG instead.
Recomendado
Sensor I/O Protection in Industrial PLCs
In industrial PLC analog and digital sensor inputs, the AQ15-02HTG clamps transient overvoltages that propagate along field wiring from relay coils, solenoids, and motor starters. Its 500 W (8/20 µs) surge rating handles the EFT bursts described in IEC 61000-4-5, while the 85 pF capacitance is acceptable for 4-20 mA loops, 0-10 V analog signals, and 24 V digital inputs. The SOT-23-3 footprint is small enough to place directly on each PLC terminal block input, providing per-channel protection without consuming valuable PCB area.
Recomendado
Automotive ECU Power Rail Protection
Automotive ECUs operating on 12 V rails are exposed to jump-start transients (up to 24 V), load-dump pulses (up to 35-40 V clamped by the upstream alternator), and reverse-battery events. The AQ15-02HTG provides secondary protection at ECU connector pins, clamping residual transients that pass through the primary bulk TVS at the power inlet. Its AEC-Q101 qualification and -40 °C to +150 °C operating range make it suitable for underhood and cabin-mounted ECUs across passenger, commercial, and off-highway vehicle platforms.
Recomendado
HDMI / DisplayPort ESD Protection
The AQ15-02HTG protects HDMI and DisplayPort connector pins from ESD during cable insertion and removal. With ±30 kV contact discharge immunity, it prevents user-handling damage to the downstream HDMI retimer or level shifter. The 15 V working voltage is suitable for the 5 V HDMI power pin, and the 85 pF capacitance is acceptable for low-speed control lines like DDC and HPD. For high-speed TMDS lanes, use a dedicated low-capacitance (<0.5 pF) TVS like the SP3010-04UTG in parallel.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para AQ15-02HTG — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | AQ24-02HTG | AQ12-02HTG | AQ05-02HTG | SP3010-04UTG | NUP2105LT1G | ESD5V0S1B-N |
|---|---|---|---|---|---|---|---|
| Brand | Littelfuse | Littelfuse | Littelfuse | Littelfuse | Littelfuse | onsemi | onsemi |
| Package | SOT-23-3 | SOT-23-3 (same) | SOT-23-3 (same) | SOT-23-3 (same) | SOT-23-3 (same) | SOT-23-3 (same) | SOT-23-3 (same) |
| Working Voltage (Vrwm) | 15 V | 24 V | 12 V | 5 V | 6 V | 24 V | 5 V |
| Line Capacitance | 85 pF | 85 pF | 85 pF | 85 pF | 0.5 pF | 10 pF | 30 pF |
| ESD Rating (IEC 61000-4-2) | ±30 kV | ±30 kV | ±30 kV | ±30 kV | ±15 kV | ±30 kV | ±30 kV |
| Channels | 2 | 2 | 2 | 2 | 4 | 2 | 1 |
| Automotive Grade | AEC-Q101 | AEC-Q101 | AEC-Q101 | AEC-Q101 | Industrial | AEC-Q101 | Industrial |
Diferenciadores clave
- Highest ESD rating in a SOT-23-3 2-channel TVS (frente a SP3010-04UTG)
- Higher peak pulse power than competing 2-channel SOT-23-3 TVS (frente a NUP2105LT1G)
- AEC-Q101 automotive qualification across the family (frente a ESD5V0S1B-N)
Notas de diseño
Place the AQ15-02HTG as close as possible to the connector or ESD entry point - ideally within 5 mm of the connector pins. Keep the trace between the protected IC and the TVS device short and direct, and provide a low-impedance ground return to chassis ground or the PCB ground plane via multiple vias. Avoid routing protected traces beneath the TVS package to minimize parasitic coupling from the ESD strike into adjacent signals. The exposed pad (if present) should be soldered to a copper pour tied to ground.
The AQ15-02HTG clamps at 30 V when handling a 15 A, 8/20 µs surge. Verify that downstream components tolerate this clamping voltage; many 15 V-rated ICs have absolute maximum ratings of 18-20 V. If the protected IC cannot tolerate 30 V, add a series resistance or upstream PTC to limit surge current, or select the AQ12-02HTG (25 V clamping). For dual-stage protection, pair the AQ15-02HTG with a primary bulk TVS at the connector inlet (e.g., SMBJ series) to share surge energy.
Do not use the AQ15-02HTG on signals above 15 V DC (it will clamp continuously and overheat). Do not assume 85 pF is acceptable for all high-speed interfaces - USB 2.0 high-speed, HDMI, and 1000BASE-T require TVS arrays below 1 pF. Do not place the device on a signal line without a ground return path; floating ground defeats the protection. For multi-line interfaces, ensure each line is routed through a dedicated channel of the AQ15-02HTG to avoid common-mode coupling.
Información de cumplimiento
AEC-Q101 qualified (automotive grade). RoHS compliant per Littelfuse product page. Lead-free / halogen-free per datasheet declaration.
