ESD1LIN24DYFRQ1 - 24V LIN ESD Protection TVS | TI | Q1
料号： ESD1LIN24DYFRQ1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.16 | $0.16 |
| 10 | $0.13 | $1.30 |
| 100 | $0.11 | $11.00 |
| 500 | $0.09 | $45.00 |
| 1,000 | $0.07 | $70.00 |
ESD1LIN24DYFRQ1 概述
An ESD protection diode, also called a TVS (transient voltage suppressor) diode or ESD suppressor, is a two-terminal semiconductor device that clamps fast overvoltage transients before they reach sensitive circuitry. Within the power/signal-protection hierarchy, it sits below surge arresters and above simple RC filters, forming the first line of defense in automotive power management and in-vehicle networking interfaces such as LIN (Local Interconnect Network) bus nodes.
Key features of the ESD1LIN24DYFRQ1 include very low junction capacitance of approximately 2.3 pF to 3 pF, which preserves signal integrity on LIN bus lines up to 19.2 kbps and beyond; a 37 V typical clamping voltage with 4.3 A (8/20 us) Ipp surge capability; and low dynamic resistance, which keeps the clamped voltage low during high-current ESD strikes. The -Q1 suffix confirms AEC-Q100 automotive qualification and support for -40C to +150C operation, well beyond most industrial-grade suppressors.
Architecturally, the device is a bidirectional avalanche-type clamp: no polarity orientation is required on the asymmetric line, simplifying assembly. Its low dynamic resistance means the rail voltage rises only minimally as ESD current increases, protecting downstream LIN transceivers and MCU IO pins. TI also offers the related ESD751-Q1 and ESD761-Q1 in leaded packages for easy through-routing on the protected line.
Typical applications include LIN bus ESD protection in body-control modules, door modules, seat controllers, and wiper/lighting nodes; 12 V and 24 V automotive rail protection; and industrial 24 V sensor lines exposed to field wiring transients.
Design consideration: place the diode within a few millimeters of the connector, with a short, direct ground return path, since series inductance in the trace degrades clamping effectiveness during nanosecond-scale ESD events.
This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing, drop-in family alternatives, comparison tables, and practical layout guidance for LIN ESD protection design.
直接替换替代料： ESD1LIN24DYFRQ1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
ESD1LIN24DYFR
✅ 直接替换📋 参考替代料（不在目录中）
ESD751-Q1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ESD761-Q1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ESD1LIN24DYFRQ1 规格参数
| Protection Channel | 1 (bidirectional) |
| Working Voltage (Reverse Standoff) | ±24 V |
| Clamping Voltage | 37 V (typ) |
| Peak Pulse Current (Ipp) | 4.3 A (8/20 us) |
| ESD Rating (IEC 61000-4-2) | ±30 kV Contact / ±30 kV Airgap |
| Junction Capacitance | 2.3 pF to 3 pF |
| Dynamic Resistance | Low (see datasheet curves) |
| Directionality | Bidirectional (no polarity) |
| Automotive Qualification | AEC-Q100 (Q1) |
| 工作温度 | -40C to +150C |
| 封装 | SOD-323 (SC-76, 2-pin) |
| 安装类型 | Surface Mount |
| Application | LIN bus / in-vehicle network ESD protection |
ESD1LIN24DYFRQ1 引脚配置
| 引脚 1 | A1 — Bidirectional clamp terminal 1 (connect to protected line or ground) |
| 引脚 2 | A2 — Bidirectional clamp terminal 2 (connect to protected line or ground); no polarity requirement |
典型应用
ESD1LIN24DYFRQ1 适用于 6 应用s: LIN Bus ESD Protection, Body Control Modules, Door and Seat Control Modules, 24V Industrial Sensor and Field Wiring Protection, Automotive Lighting and Wiper Control Nodes, Test and Measurement Input Protection.
LIN Bus ESD Protection
The primary application for the ESD1LIN24DYFRQ1 is protecting LIN (Local Interconnect Network) bus lines in automotive body electronics. LIN transceiver pins are exposed to cable-discharge and assembly-line ESD events, and TI rates this diode beyond IEC 61000-4-2 maximum levels at ±30-kV contact and ±30-kV airgap. Its 2.3-pF junction capacitance adds negligible bus loading at LIN's 19.2-kbps signaling, and the 37-V typical clamping voltage keeps transceiver pin voltage below damage thresholds during strikes. Place the diode directly at the connector side of the LIN node, close to the TJA1021/1027-class transceiver's LIN pin, with a short ground return to minimize series inductance that would otherwise degrade clamping.
推荐
Body Control Modules
Body-control modules (BCMs) consolidate door, lighting, seat, and wiper functions on multiple LIN and discrete 12-V lines, all of which leave the module through harness connectors exposed to ESD and load-dump-coupled transients. The ESD1LIN24DYFRQ1's ±24-V working voltage covers both 12-V and 24-V rail excursions while remaining transparent in normal operation thanks to low leakage and 2.3-pF capacitance. AEC-Q100 qualification and -40C to +150C operation match typical BCM environmental requirements. Its small SOD-323 footprint lets designers place one diode per connector pin without board-area penalties, a major advantage in densely routed BCM layouts where dozens of lines need individual protection.
推荐
Door and Seat Control Modules
Door modules and seat controllers route switch, motor-sense, and LIN communication wiring through flexible harnesses that are repeatedly flexed and handled during assembly and service, making them prime ESD entry points. The ESD1LIN24DYFRQ1 clamps these events at 37 V typical with low dynamic resistance, so even high-current strikes do not drive transceiver or MCU pins past absolute maximum ratings. The bidirectional structure requires no polarity orientation, which simplifies assembly and supports symmetric switch lines. With 4.3-A (8/20 us) surge capability, it also absorbs the smaller switching transients generated by motor loads sharing the same connector, reducing system-level component count.
推荐
24V Industrial Sensor and Field Wiring Protection
Although qualified for automotive use, the ESD1LIN24DYFRQ1 fits industrial 24-V field wiring equally well: its ±24-V standoff matches standard 24-V sensor supply rails, and the 37-V typical clamp protects ADC inputs, optocoupler LEDs, and PLC IO from cable discharge per IEC 61000-4-2 ±30 kV. Compared with varistors, the silicon diode does not wear out with repeated strikes and keeps capacitance at about 2.3 pF, preserving signal fidelity on analog sensor lines. Designers should verify that the protected IC's absolute maximum rating exceeds 37 V and should add bulk TVS or MOV protection upstream if the installation must survive high-energy IEC 61000-4-5 surge events beyond the diode's 4.3-A capability.
推荐
Automotive Lighting and Wiper Control Nodes
Exterior lighting and wiper modules operate in the harshest electrical environment of the vehicle, with load-dump-coupled transients on shared supply lines and direct ESD exposure at bulb and switch connectors. The ESD1LIN24DYFRQ1 protects the LIN command line and switch-sense inputs of these nodes, with the ±24-V standoff tolerating normal battery fluctuation and the 37-V clamp absorbing fast events. Its -40C to +150C AEC-Q100 range covers underhood-adjacent and lamp-enclosure temperatures. Because these modules typically carry several protected lines per PCB, the compact SOD-323 outline and bidirectional installation freedom keep layout effort and bill-of-materials code variety to a minimum.
推荐
Test and Measurement Input Protection
Handheld and bench instruments with front-panel terminals see frequent human-body ESD and cable discharge. The ESD1LIN24DYFRQ1 serves as an input clamp on 24-V-range measurement channels, where its 2.3-pF capacitance preserves bandwidth on medium-speed signal lines and the ±30-kV IEC 61000-4-2 rating matches the ESD immunity targets such instruments are typically designed to. The 37-V typical clamping voltage protects the input attenuator and instrumentation amplifier stage; downstream, a series resistor plus this clamp forms a robust front end. For higher-energy transients, pair it with a gas discharge tube or MOV stage, using the diode as the fast, precise final clamp at the sensitive node.
推荐
推荐产品汇总
工程参考数据： ESD1LIN24DYFRQ1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ESD1LIN24DYFR | ESD751-Q1 | ESD761-Q1 |
|---|---|---|---|---|
| Package | SOD-323 | SOD-323 - same | SOD-323 (verify variant) | SOD-323 (verify variant) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| AEC-Q100 Qualified | Yes (-Q1) | No (standard grade) | Yes (-Q1) | Yes (-Q1) |
关键差异点
- AEC-Q100 automotive qualification with 150C operation （对比 ESD1LIN24DYFR)
- ±30-kV contact and airgap ESD robustness （对比 Generic 15-kV-class LIN suppressors)
- Low 2.3-pF capacitance with bidirectional installation （对比 ESD751-Q1 / ESD761-Q1 family members)
设计说明
Place the ESD1LIN24DYFRQ1 within 5 mm of the connector pin being protected, with the ground-side trace as short and wide as possible. During an IEC 61000-4-2 ±30-kV strike, current rise times approach 1 ns; every nanohenry of trace inductance adds V = L * di/dt overshoot that bypasses the diode's 37-V clamp. Route the protected signal through the diode pads (inline placement) rather than teeing off, so the clamp is always in the current path. Avoid shared ground return stubs between multiple ESD diodes to prevent mutual coupling.
Confirm the protected IC's absolute maximum pin voltage exceeds the 37-V typical clamping voltage with margin - some 3.3-V transceivers rely on external series resistance between the clamp and the pin. Do not use the ESD1LIN24DYFRQ1 as the sole device for IEC 61000-4-5 surge immunity: its 4.3-A (8/20 us) Ipp suits ESD and small transients, but load dump requires a dedicated high-energy TVS upstream. Remember the -Q1 part is required where AEC-Q100 is contractually specified; the non-Q1 ESD1LIN24DYFR is not an automotive substitute.
At approximately 2.3 pF, this diode adds negligible loading to LIN's 19.2-kbps signaling even with many protected nodes on the bus. On faster lines (for example sensor buses above 1 Mbps), compute the RC penalty: with a 100-ohm source impedance, 2.3 pF gives roughly 0.23 ns time constant, far below typical edge rates. However, on high-impedance analog nodes (megaohm source), even 2.3 pF creates a visible pole - estimated: at 1-Mohm source, the pole sits near 69 kHz, which may limit wideband measurement front ends.
合规信息
AEC-Q100 qualification confirmed by the -Q1 suffix and TI product page. RoHS/REACH/lead-free status not stated in the provided web data - verify on the TI product page quality section.
