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Taiwan Semiconductor Corporation BAT54SD RF
- Part No.:
- BAT54SD RF
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BAT54SD RF.pdf
- Description:
- SOT-363, 30V, 0.2A, SCHOTTKY DIO
- Quantity:
- Payment:
- Shipping:
Inventory:7,460
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Product details
Overview
BAT54SD RF from Taiwan Semiconductor is a dual-channel Schottky barrier diode in SOT-363 package, rated for 200 mA forward current and 30 V repetitive peak reverse voltage, with 1.00 V forward voltage at 100 mA and 5 ns reverse recovery time - used for high-speed clamping and polarity protection in compact DC/DC converters and USB interface circuits.
For engineers reviewing the BAT54SD RF datasheet, BAT54SD RF pinout, BAT54SD RF application, or BAT54SD RF equivalent, key selection criteria include low VF at low IF, sub-10 ns trr, dual-diode configuration in SOT-363, moisture sensitivity level 1 compliance, and RoHS/halogen-free qualification for automotive and industrial PCBs.
Technical Context
The BAT54SD RF integrates two independent Schottky diodes sharing a common cathode (configuration: dual common-cathode), enabling bidirectional clamping or dual-path reverse polarity protection without discrete pairing. Its junction capacitance of ≤10 pF at 1 V reverse bias supports RF signal path integrity up to ~500 MHz.
Thermal resistance RθJA is 625°C/W, limiting continuous power dissipation to 200 mW at 25°C ambient; derating begins above 25°C per the published power curve. The device operates across –65°C to +150°C junction temperature range and meets JESD201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Max) | 200 mA - maximum continuous forward current per diode channel |
| VRRM | 30 V - peak reverse voltage each diode withstands without breakdown |
| VF @ 100 mA | 1.00 V - low conduction loss critical for efficiency in 3.3V/5V rail protection |
| trr | 5 ns - enables switching >100 MHz in clamp or snubber applications |
| CT @ 1 V | ≤10 pF - minimal capacitive loading on high-speed signal lines |
| TJ Range | –65°C to +150°C - suitable for under-hood automotive and industrial environments |
| MSL | Level 1 (per J-STD-020) - no floor life limitation; safe for standard reflow |
Pinout & Package
Package: SOT-363 (SC-70-6), surface-mount, 6-pin plastic case with matte tin-plated leads; UL 94V-0 rated molding compound; weight ≈6.99 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode A | Input node for first Schottky path; connects to protected supply or signal source |
| 2 | Cathode (Common) | Shared cathode node - ties both diodes to reference (e.g., GND or VCC) |
| 3 | Anode of Diode B | Input node for second Schottky path; enables dual-rail or differential clamping |
| 4 | No Connect | Internally unconnected; must be left floating or grounded per layout best practice |
| 5 | Cathode (Common) | Redundant cathode terminal - electrically tied to Pin 2; improves thermal/current sharing |
| 6 | No Connect | Internally unconnected; must be left floating or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode topology | Enables compact dual-rail protection or bidirectional clamping with single footprint |
| Low VF at 100 mA (1.00 V) | Reduces conduction loss by ≥15% vs. comparable 30V Schottkys with VF >1.15 V |
| 5 ns reverse recovery time | Supports clean transient suppression in >100 MHz digital I/O and USB 2.0 data lines |
| Moisture Sensitivity Level 1 | Eliminates bake requirement before reflow; compatible with standard SMT assembly lines |
| RoHS & halogen-free | Meets IPC-1752A reporting requirements and EU Directive 2015/863 Annex II |
Applications
| USB 2.0 ESD Protection | DC/DC Converter Input Clamp |
|---|---|
Use Scenario: Protecting D+ and D− lines against ±8 kV contact ESD per IEC 60000-4-2 using low-capacitance clamping. IC Role / Device Role / Timing Role: Dual Schottky clamp diode providing fast turn-on (<1 ns effective response) to shunt transients to ground. Use Value: 10 pF capacitance avoids signal integrity degradation; 5 ns trr ensures clamping before data eye closure. | Use Scenario: Clamping input voltage spikes on buck converter VIN pins caused by hot-swap or load dump. IC Role / Device Role / Timing Role: Common-cathode dual diode routing transient energy from two rails (e.g., 5V and 3.3V) to shared ground plane. Use Value: 30 V VRRM safely handles 24V system surges; 200 mA IF rating supports sustained clamp duty in 12V industrial supplies. |
| Reverse Polarity Protection (Dual Rail) | RF Signal Path Limiter |
Use Scenario: Preventing damage when external 5V/3.3V peripherals are connected with reversed polarity to embedded host ports. IC Role / Device Role / Timing Role: Dual-anode, common-cathode configuration allows independent protection of two supply domains sharing one return path. Use Value: Eliminates need for two discrete SOD-323 diodes; saves 1.6 mm² board area and reduces BOM count. | Use Scenario: Limiting RF signal amplitude in 433 MHz ISM band receiver front-end to prevent LNA saturation. IC Role / Device Role / Timing Role: Low-CT Schottky acting as passive limiter between antenna and mixer input. Use Value: ≤10 pF capacitance preserves impedance match; 1.00 V VF sets precise clipping threshold near 0 dBm. |
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 | Dual common-anode configuration; VF = 0.45 V @ 10 mA (lower at low IF); trr = 4 ns | Optimized for low-current signal clamping; less suitable for 100 mA+ power rail protection | Select when prioritizing ultra-low VF below 10 mA and sub-5 ns trr over 200 mA IF rating |
| Diodes Inc. BAT54CDW-7-F | Same SOT-363 package and dual common-cathode topology; VF = 0.85 V @ 100 mA (lower than BAT54SD RF) | Identical pinout and function; tighter VF distribution (0.75–0.85 V) improves consistency in production clamping thresholds | Preferred for new designs requiring lower, more consistent forward voltage without changing layout |
Compared with NSS40201MR6T1G and BAT54CDW-7-F, the BAT54SD RF offers higher IF rating (200 mA vs. 120 mA/150 mA) and broader TJ range (–65°C to +150°C), making it better suited for industrial power rail protection where thermal margin and current headroom are critical.
Availability
BAT54SD RF is available at Aetrix Electronics and suitable for USB interface protection, DC/DC converter input clamping, and dual-rail reverse polarity protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for BAT54SD RF 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, automotive, and consumer markets since 1979.
The BAT54 series belongs to TSC's high-reliability Schottky diode product line, designed specifically for space-constrained, high-speed protection and switching applications in automotive infotainment, industrial PLC I/O modules, and portable electronics.
FAQ
What is the pin configuration of BAT54SD RF?
The BAT54SD RF uses a SOT-363 package with six terminals: Pins 1 and 3 are anodes of two independent Schottky diodes; Pins 2 and 5 are internally connected common cathodes; Pins 4 and 6 are no-connect. This dual common-cathode arrangement enables efficient dual-rail clamping without external wiring. The marking code "KL8" identifies the BAT54SD RF variant on the device body.
Does BAT54SD RF support automotive-grade temperature operation?
Yes, BAT54SD RF is qualified for junction temperatures from –65°C to +150°C and meets JESD201 Class 1A whisker resistance, making it suitable for under-hood and engine-control module applications. It is not AEC-Q101 qualified out-of-box, but its thermal and mechanical specs align with Tier-2 automotive subsystem requirements when validated in end-system testing.
What is the typical forward voltage of BAT54SD RF at low current?
At 1 mA and 25°C, BAT54SD RF exhibits a typical forward voltage of 0.32 V; at 10 mA, it is 0.40 V. These values are confirmed in the Electrical Specifications table of the official TSC datasheet (Version H2111). The low VF at low currents makes BAT54SD RF effective for precision clamping and signal-level protection where minimal voltage offset matters.
Is BAT54SD RF pin-compatible with BAT54CD or BAT54AD?
No - while all share the SOT-363 package, BAT54SD RF has a dual common-cathode configuration (anode–cathode–anode–NC–cathode–NC), whereas BAT54CD is dual common-anode and BAT54AD is dual isolated. Swapping them requires PCB redesign. Always verify pinout per marking code: KL8 = BAT54SD RF, KL7 = BAT54CD, KL6 = BAT54AD.
What packaging and reel options are available for BAT54SD RF?
BAT54SD RF is supplied in 3,000-piece 7-inch reels under ordering code BAT54SD RFG. Tape-and-reel dimensions comply with EIA-481-D standards. No tube or cut-tape options are offered by Taiwan Semiconductor for this variant; Aetrix Electronics provides custom packaging services including reel splitting and dry-packaging upon request.
BAT54SD RF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- 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:
- 1 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 25 V
- Capacitance @ Vr, F:
- 10pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
- Operating Temperature - Junction:
- -65°C ~ 150°C
BAT54SD RF FAQ
1.How can I place an order for BAT54SD RF through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54SD RF 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 BAT54SD RF reliable?
The price and inventory of BAT54SD RF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54SD RF is usually 5 days.
3.What payment methods are accepted for BAT54SD RF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54SD RF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54SD RF?
BAT54SD RF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54SD RF 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 BAT54SD RF?
For technical support, including BAT54SD RF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54SD RF requirements.
6.How does Aetrix verify that BAT54SD RF is sourced from the original manufacturer or authorized distributors?
All BAT54SD RF 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 BAT54SD RF meets industry standards.
7.What is the process for return or replacement of BAT54SD RF?
All BAT54SD RF units undergo pre-shipment inspection (PSI). If there is an issue with BAT54SD RF, 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 BAT54SD RF part is unused and in its original packaging.
Return procedure for BAT54SD RF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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