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Nexperia USA Inc. BAT54H-QX
- Part No.:
- BAT54H-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
BAT54H-QX.pdf
- Description:
- BAT54H-Q/SOD123F/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:7,801
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Product details
Overview
BAT54H-QX from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, housed in a SOD123F surface-mount package. It delivers 30 V reverse voltage rating, 200 mA continuous forward current, 400 mV forward voltage at 10 mA, 2 µA reverse leakage at 25 V, and 10 pF capacitance at 1 V - enabling ultra-high-speed switching and polarity protection in automotive power rails.
For engineers reviewing the BAT54H-QX datasheet, BAT54H-QX pinout, BAT54H-QX application, or BAT54H-QX equivalent, this device supports AEC-Q101-qualified automotive designs where low VF, low Cd, and thermal robustness (Rth(j-a) = 330 K/W) are critical for clamping, termination, and reverse-polarity circuits.
Technical Context
The BAT54H-QX employs a planar Schottky junction with an integrated guard ring to enhance ESD and transient stress immunity without compromising switching speed. Its low-barrier metal-semiconductor interface yields sub-400 mV forward drop at 10 mA and maintains stable 10 pF capacitance up to 1 V reverse bias.
Qualified per AEC-Q101, it operates across −65 °C to +125 °C junction temperature with 375 mW total power dissipation on FR4 PCB. Thermal resistance from junction to solder point is 70 K/W, enabling reliable performance in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR | 30 V maximum reverse voltage - defines safe blocking capability in 24 V automotive systems with transient margin. |
| IF | 200 mA continuous forward current - supports sustained load switching in sensor interface and bias networks. |
| VF @ 10 mA | 400 mV typical - minimizes conduction loss and self-heating in low-voltage clamping paths. |
| IR @ 25 V | 2 µA maximum - ensures negligible leakage in high-impedance line termination and backup power paths. |
| Cd @ 1 V | 10 pF typical - enables >100 MHz signal integrity in USB, CAN, or LIN bus protection circuits. |
| Rth(j-a) | 330 K/W - determines thermal rise under 200 mA DC load on standard FR4 PCB with single-sided copper. |
Pinout & Package
Encapsulated in the SOD123F plastic surface-mount package (2.6 mm × 1.6 mm × 1.1 mm), the BAT54H-QX uses a two-terminal configuration with cathode marked by a bar on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to system ground or lower-potential node; marking bar identifies this terminal for correct orientation during placement. |
| 2 | Anode (A) | Connected to input or higher-potential rail; forms forward conduction path when biased above cathode by ≥400 mV. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Enhances ruggedness against ESD and voltage transients without increasing VF or Cd - critical for unshielded automotive harness interfaces. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - eliminates requalification effort for Tier 1 designs. |
| Low thermal resistance to solder point | Rth(j-sp) = 70 K/W - enables efficient heat transfer from junction to PCB copper through cathode tab, supporting 300 mA pulsed operation. |
| Small SOD123F footprint | 2.6 mm × 1.6 mm area - fits dense layouts in ADAS camera modules, body control units, and infotainment power sequencers. |
Applications
| Ultra-High-Speed Switching | Voltage Clamping |
|---|---|
Use Scenario: Fast-switching DC-DC converter synchronous rectification and flyback snubber networks. IC Role / Device Role / Timing Role: Schottky diode providing low-loss freewheeling path with <10 ns reverse recovery time. Use Value: Reduces switching losses by limiting forward voltage to 400 mV at 10 mA and maintaining 10 pF capacitance for minimal ringing. |
Use Scenario: Overvoltage protection on 12 V/24 V power inputs of engine control units and lighting drivers. IC Role / Device Role / Timing Role: Clamp diode shunting transients above rail voltage to ground before IC damage occurs. Use Value: Guard ring structure withstands repetitive 30 V reverse stress while leakage stays below 2 µA at operating temperature. |
| Line Termination | Inverse-Polarity Protection |
Use Scenario: Impedance matching and signal integrity preservation on CAN FD or LIN bus lines. IC Role / Device Role / Timing Role: Low-capacitance (10 pF) termination diode minimizing signal distortion at >2 Mbps data rates. Use Value: Enables clean edge transitions and reduces reflections without loading the bus beyond specification limits. |
Use Scenario: Reverse-battery protection in automotive infotainment head units and telematics modules. IC Role / Device Role / Timing Role: Series-connected anode-to-input, cathode-to-load diode blocking reverse current flow. Use Value: Limits forward drop to 400 mV at 10 mA, reducing voltage loss and thermal rise compared to standard silicon diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS40201MR6T1G | SOD-123 package, 40 V VR, 200 mA IF, VF = 450 mV @ 10 mA, Cd = 12 pF @ 1 V | Higher VR margin but slightly higher VF and Cd - suitable where 40 V transient suppression is required over 30 V. | Select when system-level transients exceed 30 V and layout allows 12 pF capacitance impact on signal integrity. |
| Diodes Incorporated SD103AW-TP | SOD-123 package, 40 V VR, 200 mA IF, VF = 470 mV @ 10 mA, Cd = 15 pF @ 1 V, no AEC-Q101 qualification | Lacks automotive qualification and exhibits higher capacitance - appropriate for industrial or consumer power rails only. | Choose only for non-automotive applications where cost sensitivity outweighs AEC-Q101 compliance and low-Cd requirements. |
Compared with NSS40201MR6T1G and SD103AW-TP, the BAT54H-QX offers the lowest VF (400 mV) and Cd (10 pF) among AEC-Q101-qualified SOD123F Schottkys, making it optimal for high-speed, thermally constrained automotive signal and power paths.
Availability
BAT54H-QX is available at Aetrix Electronics and suitable for automotive power management, CAN/LIN bus protection, and reverse-polarity safeguarding requiring stable component supply across production lifecycles.
Supply support for BAT54H-QX 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BAT54H-QX belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for robust, low-loss protection and switching in automotive electrical architectures.
FAQ
Is BAT54H-QX suitable for 24 V automotive battery reverse-polarity protection?
Yes. With a 30 V reverse voltage rating and 400 mV forward voltage at 10 mA, BAT54H-QX provides low-loss series protection on 24 V rails. Its AEC-Q101 qualification ensures reliability under automotive temperature and vibration stress, and the guard ring enhances survivability during load dump events.
What is the thermal performance of BAT54H-QX on a standard FR4 PCB?
On a standard FR4 board with single-sided copper and tin-plated finish, BAT54H-QX exhibits Rth(j-a) = 330 K/W and Rth(j-sp) = 70 K/W. At 200 mA DC, this results in ~66 °C junction-to-ambient rise, well within its 125 °C max Tj limit when ambient remains ≤59 °C.
How does the guard ring improve robustness in BAT54H-QX?
The integrated guard ring mitigates edge breakdown under high electric field stress, improving ESD immunity (HBM >8 kV) and transient tolerance without degrading forward characteristics. This is confirmed in Nexperia's AEC-Q101 test reports for mechanical and electrical stress screening.
Can BAT54H-QX replace BAT54C in existing SOD-123 designs?
No. BAT54C is a dual common-cathode Schottky in SOT-23, while BAT54H-QX is a single diode in SOD123F. Pin count, package outline, and thermal behavior differ significantly - direct replacement requires PCB layout revision and validation of thermal and electrical margins.
BAT54H-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2 µA @ 25 V
- Capacitance @ Vr, F:
- 10pF @ 1V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- 125°C
BAT54H-QX FAQ
1.How can I place an order for BAT54H-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54H-QX 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 BAT54H-QX reliable?
The price and inventory of BAT54H-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54H-QX is usually 5 days.
3.What payment methods are accepted for BAT54H-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54H-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54H-QX?
BAT54H-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54H-QX 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 BAT54H-QX?
For technical support, including BAT54H-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54H-QX requirements.
6.How does Aetrix verify that BAT54H-QX is sourced from the original manufacturer or authorized distributors?
All BAT54H-QX 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 BAT54H-QX meets industry standards.
7.What is the process for return or replacement of BAT54H-QX?
All BAT54H-QX units undergo pre-shipment inspection (PSI). If there is an issue with BAT54H-QX, 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 BAT54H-QX part is unused and in its original packaging.
Return procedure for BAT54H-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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