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STMicroelectronics ESDLIN1524BJ-HQ
- Part No.:
- ESDLIN1524BJ-HQ
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
ESDLIN1524BJ-HQ.pdf
- Description:
- TVS DIODE 50VWM 40VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:10,601
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Product details
Overview
ESDLIN1524BJ-HQ from STMicroelectronics is an AEC-Q101-qualified asymmetrical bidirectional TVS diode for LIN and CXPI bus protection, featuring ±30 kV IEC 61000-4-2 ESD immunity, 24 V / –15 V stand-off voltage, and 16 pF typical junction capacitance at 0 V - deployed in automotive body control modules, door modules, and smart sensors requiring robust transient suppression.
For engineers reviewing the ESDLIN1524BJ-HQ datasheet, ESDLIN1524BJ-HQ pinout, ESDLIN1524BJ-HQ application, or ESDLIN1524BJ-HQ equivalent, key selection criteria include reverse-battery compliance (–15 V), jump-start tolerance (+24 V), low leakage (<50 nA), ISO 7637-3 pulse 2a/3a/3b clamping performance, and SOD323 footprint compatibility with high-density PCB layouts.
Technical Context
This device implements dual-directional asymmetrical clamping: the 24 V side (pin 2 → pin 1) provides higher stand-off and clamps at 40 V (1 A) to protect against jump-start surges, while the 15 V side (pin 1 → pin 2) clamps at 25 V (1 A) for reverse-battery events. Its 16–20 pF capacitance at 0 V ensures minimal signal distortion on LIN/CXPI buses operating up to 20 kbps.
Designed specifically for automotive serial bus interfaces, it meets ISO 17987-7 (LIN) and SAE J3076 (CXPI) physical layer immunity requirements, with validated response to ISO 7637-3 pulses 2a (±85 V), 3a (–150 V), and 3b (+150 V), and operates across –40 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV air/contact discharge per IEC 61000-4-2 (C = 150/330 pF, R = 330 Ω) - exceeds automotive Level 4 immunity |
| Stand-off Voltage | +24 V (pin 2→1) / –15 V (pin 1→2) - supports reverse-battery and jump-start conditions per ISO 16750-2 |
| Clamping Voltage | 40 V @ 1 A (24 V side), 25 V @ 1 A (15 V side) - limits bus voltage during transients without disrupting communication |
| Junction Capacitance | 16–20 pF @ 0 V, 1 MHz - preserves LIN/CXPI signal integrity at standard data rates |
| Leakage Current | <50 nA @ VRM - avoids parasitic loading on low-power bus lines |
| Peak Pulse Power | 160 W @ 8/20 µs - sustains ISO 7637-3 pulse 3b (+150 V) without degradation |
| Operating Temp | –40 °C to +150 °C - qualified for under-hood and cabin-mounted automotive ECUs |
Pinout & Package
ESDLIN1524BJ-HQ is housed in a JEDEC-registered SOD323 surface-mount package (1.52 × 1.11 mm, 0.93 mm height), optimized for automated placement and reflow soldering per IPC/JEDEC J-STD-020 MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of 15 V clamp path | Connects to LIN/CXPI bus line; referenced to ground via internal 15 V breakdown path |
| Pin 2 | Cathode of 24 V clamp path | Connects to bus line; enables +24 V stand-off and higher-energy clamping during jump-start events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use across temperature, humidity, and mechanical stress cycles - required for Tier-1 ECU deployment |
| Asymmetrical bidirectional protection | Independent 15 V and 24 V clamping thresholds enable precise compliance with ISO 16750-2 reverse-battery and jump-start test profiles |
| Low 16–20 pF capacitance | Minimizes signal rise-time degradation on LIN (up to 20 kbps) and CXPI (up to 1 Mbps) buses without requiring layout compensation |
| ECOPACK2 RoHS compliance | Lead-free, halogen-free construction meets global automotive environmental mandates and supports Pb-free reflow processes |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - eliminates baking requirements before assembly |
Applications
| Body Control Module (BCM) | Door Control Unit (DCU) |
|---|---|
|
Use Scenario: LIN bus links BCM to interior lighting, seat position sensors, and HVAC actuators in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Transient suppressor placed directly at LIN connector entry point to absorb ESD and load-dump energy before reaching transceiver IC. Use Value: Prevents bus lock-up during door slam ESD events and maintains communication integrity during battery disconnect/reconnect sequences. |
Use Scenario: DCU uses LIN to communicate window lift, mirror fold, and lock status to BCM; exposed to frequent human-hand ESD and cable harness coupling. IC Role / Device Role / Timing Role: Asymmetrical clamping protects bidirectional LIN signaling while preserving timing margins for 20 kbps frame transmission. Use Value: Enables reliable operation under ISO 10605 ±30 kV contact discharge without adding series resistance or degrading slew rate. |
| Smart Sensor Node | CXPI Network Interface |
|
Use Scenario: Tire pressure monitoring system (TPMS) or ambient light sensor communicates over LIN to reduce wiring harness weight and cost. IC Role / Device Role / Timing Role: Low-capacitance TVS placed between sensor LIN transceiver and external harness to limit induced transients from nearby solenoid switching. Use Value: Maintains <1 µs propagation delay margin while suppressing ISO 7637-3 pulse 2a (±85 V) without false triggering. |
Use Scenario: CXPI bus used in next-gen infotainment gateways for camera and radar sensor aggregation, replacing CAN in low-latency applications. IC Role / Device Role / Timing Role: Dual-threshold clamping protects CXPI differential pair against both reverse-battery faults and jump-start surges per SAE J3076 Annex B. Use Value: Supports 1 Mbps CXPI signaling with <20 pF capacitance, meeting jitter budget requirements for time-synchronized sensor fusion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asymmetrical automotive bus protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD7L5.0DT5G (ON Semi) | Symmetrical 5.0 V clamping, 12 pF, no reverse-battery support | Limited to 5 V logic-level buses; unsuitable for LIN/CXPI 12 V rail protection | Select only for non-automotive 3.3/5 V I²C/SPI lines where asymmetry and ISO 16750-2 compliance are not required |
| SP1003-01UTG (Littelfuse) | Asymmetrical (12 V / –12 V), 30 pF, ±20 kV ESD rating | Higher capacitance degrades LIN signal edge rate; lower ESD rating fails ISO 10605 Level 4 | Acceptable only for legacy LIN designs with relaxed ESD margin and no jump-start testing requirement |
Compared with ESDLIN1524BJ-HQ, the ON Semi part lacks automotive-grade asymmetry and reverse-battery capability, while the Littelfuse device trades ESD robustness and signal fidelity for broader voltage coverage - making the ST device uniquely suited for new-design LIN/CXPI nodes requiring full ISO 16750-2 and ISO 10605 compliance.
Availability
ESDLIN1524BJ-HQ is available at Aetrix Electronics and suitable for automotive body electronics, door module assemblies, and smart sensor networks requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for ESDLIN1524BJ-HQ 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 automotive, industrial, and power discrete technologies with over 40 years of analog protection IP development.
ESDLIN1524BJ-HQ belongs to ST's Automotive Protection portfolio, engineered specifically for serial bus interface hardening in 12 V vehicle architectures - targeting LIN, CXPI, and other low-speed automotive networks demanding AEC-Q101 reliability and ISO-compliant surge immunity.
FAQ
What is the maximum continuous reverse voltage this device can withstand?
The ESDLIN1524BJ-HQ supports +24 V stand-off from pin 2 to pin 1 and –15 V stand-off from pin 1 to pin 2. These values are specified per ISO 16750-2 reverse-battery and jump-start tests and represent the maximum DC voltage the device blocks without conduction. Exceeding either value risks permanent breakdown.
Does this TVS diode require external biasing or control signals?
No. ESDLIN1524BJ-HQ is a passive, unidirectional-asymmetrical TVS diode that operates without any external power, bias, or control circuitry. It functions solely through avalanche breakdown when transient voltage exceeds its respective stand-off threshold on either polarity path.
Can this part be used on a CAN bus line?
No. ESDLIN1524BJ-HQ is optimized for LIN and CXPI buses with 16–20 pF capacitance and ±30 kV ESD rating, but its 24 V / –15 V asymmetry and clamping profile do not match CAN FD requirements (typically 5 V common-mode, 12 V fault tolerance). Use ST's ESDCAN03-2BM or similar CAN-specific protectors instead.
How does junction temperature affect clamping voltage performance?
Clamping voltage varies with junction temperature per αT coefficients: +9.6×10⁻⁴/°C (24 V side) and +8.8×10⁻⁴/°C (15 V side). At +125 °C, VCL increases ~10% versus 25 °C - e.g., 40 V clamping rises to ~44 V. Designs must verify worst-case clamping remains below transceiver absolute maximum ratings.
ESDLIN1524BJ-HQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SC-76, SOD-323
- Series:
- ESDL, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 50V
- Voltage - Breakdown (Min):
- 25.4V
- Voltage - Clamping (Max) @ Ipp:
- 40V
- Current - Peak Pulse (10/1000µs):
- 50A
- Power - Peak Pulse:
- 160W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 16pF @ 1MHz
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
ESDLIN1524BJ-HQ FAQ
1.How can I place an order for ESDLIN1524BJ-HQ through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDLIN1524BJ-HQ 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 ESDLIN1524BJ-HQ reliable?
The price and inventory of ESDLIN1524BJ-HQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDLIN1524BJ-HQ is usually 5 days.
3.What payment methods are accepted for ESDLIN1524BJ-HQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDLIN1524BJ-HQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDLIN1524BJ-HQ?
ESDLIN1524BJ-HQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDLIN1524BJ-HQ 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 ESDLIN1524BJ-HQ?
For technical support, including ESDLIN1524BJ-HQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDLIN1524BJ-HQ requirements.
6.How does Aetrix verify that ESDLIN1524BJ-HQ is sourced from the original manufacturer or authorized distributors?
All ESDLIN1524BJ-HQ 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 ESDLIN1524BJ-HQ meets industry standards.
7.What is the process for return or replacement of ESDLIN1524BJ-HQ?
All ESDLIN1524BJ-HQ units undergo pre-shipment inspection (PSI). If there is an issue with ESDLIN1524BJ-HQ, 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 ESDLIN1524BJ-HQ part is unused and in its original packaging.
Return procedure for ESDLIN1524BJ-HQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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