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Diodes Incorporated BAW156T-7
- Part No.:
- BAW156T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
BAW156T-7.pdf
- Description:
- DIODE ARRAY GP 85V 125MA SOT-523
- Quantity:
- Payment:
- Shipping:
Inventory:5,309
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Product details
Overview
BAW156T-7 from Diodes Incorporated is a surface-mount ultra-low-leakage dual diode in SOT-523 package, rated for 85 V peak reverse voltage and 125 mA forward current per diode, with typical leakage of 5.0 nA at 75 V and 25°C - used in precision signal clamping and ESD protection circuits in automotive sensor interfaces.
For engineers reviewing the BAW156T-7 datasheet, BAW156T-7 pinout, BAW156T-7 application, or BAW156T-7 equivalent, key selection criteria include reverse leakage at elevated temperature, reverse recovery time under 3.0 μs, dual-diode configuration in sub-2 mm² footprint, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This dual diode integrates two independent low-leakage PN junctions in a single SOT-523 package, sharing no internal connection - each anode and cathode are separately accessible. Its 833°C/W thermal resistance and 150 mW power dissipation reflect FR-4 board mounting with recommended pad layout.
The device operates across –65°C to +150°C, with leakage rising to 80 nA at 75 V and 150°C, and exhibits 2 pF junction capacitance at 0 V bias and 1 MHz - enabling stable high-frequency signal routing without loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 85 V - maximum repetitive reverse voltage each diode withstands without breakdown |
| IF (per diode) | 125 mA DC - continuous forward current rating per diode at 25°C ambient |
| IR @ 75 V, 25°C | 5.0 nA - ultra-low leakage critical for precision biasing and sample-hold circuits |
| trr | 3.0 μs - fast reverse recovery supports >300 kHz switching in clamp/protect applications |
| CT @ 0 V, 1 MHz | 2 pF - minimal junction capacitance preserves signal integrity in RF and analog front-ends |
| RθJA | 833°C/W - thermal resistance defines derating curve: full power only below 50°C ambient |
| AEC-Q101 | Qualified - meets stress test requirements for automotive electronics including temperature cycling and HTRB |
Pinout & Package
SOT-523 is a 3-terminal ultra-miniature plastic package (1.60 × 0.80 × 0.50 mm), with terminals plated in matte tin over Alloy 42 leadframe. Polarity is marked on top surface: "53" for BAW156T-7, with cathode band adjacent to terminal 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 | Input node for first diode's forward conduction path; connects to signal source in clamp topology |
| 2 | Cathode of Diode 1 / Anode of Diode 2 | Common node - enables series-connected dual-diode configurations like bidirectional TVS or level-shift clamps |
| 3 | Cathode of Diode 2 | Output node for second diode; ties to reference rail or ground in protection circuits |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IR at high VR | 5.0 nA @ 75 V, 25°C - enables use in microamp-level bias networks without error drift |
| AEC-Q101 qualification | Validated for automotive underhood environments - supports engine control, ABS, and cabin sensor modules |
| SOT-523 footprint | 1.60 × 0.80 mm - saves >65% board area vs. SOT-23 while maintaining solderability and reflow compatibility |
| Green molding compound | UL 94V-0 rated, halogen-free - satisfies IPC-1752A environmental compliance for Tier 1 automotive supply chains |
Applications
| Automotive Cabin Sensors | Industrial Analog Input Protection |
|---|---|
Use Scenario: Protecting thermistor and potentiometer inputs in HVAC control modules against ESD and load dump transients. IC Role / Device Role / Timing Role: Dual-diode clamp limiting input voltage to ±0.7 V beyond rails using common-cathode/anode configuration. Use Value: 5.0 nA leakage prevents offset error in 10-bit ADC measurements; 3.0 μs trr avoids distortion in 100 kHz sampling systems. | Use Scenario: Guarding 4–20 mA current loop receivers from field-induced surges and wiring faults. IC Role / Device Role / Timing Role: Bidirectional voltage limiter placed between loop input and op-amp input stage. Use Value: 85 V VRRM withstands 75 V transients per IEC 61000-4-5; SOT-523 allows placement directly at connector entry point. |
| Medical Patient Monitoring | Test & Measurement Front-Ends |
Use Scenario: Isolating ECG electrode inputs from amplifier stages while preserving DC accuracy. IC Role / Device Role / Timing Role: Low-leakage signal clamp preventing op-amp saturation during patient lead disconnect events. Use Value: Sub-10 nA leakage ensures <1 μV input offset shift over temperature; 2 pF CT avoids phase lag in 10 kHz bio-signal bandwidth. | Use Scenario: Protecting oscilloscope and DMM input attenuators from accidental overvoltage exposure. IC Role / Device Role / Timing Role: Fast-recovery dual clamp shunting excess energy before it reaches precision resistive dividers. Use Value: 3.0 μs trr enables clean response to 100 ns rise-time transients; AEC-Q101 grade assures long-term parametric stability in lab equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-leakage diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAS116T-7-F | Single diode, same SOT-523 package, identical VRRM (85 V) and IR (5 nA), but no dual configuration | Requires two devices for dual-clamp function; increases board area and assembly cost | Select when only one clamping path is needed or layout allows discrete placement |
| BAV199T-7-F | Dual diode in same package, but higher IR (50 nA @ 75 V) and slower trr (4.0 μs); not AEC-Q101 qualified | Suitable for non-automotive consumer systems where leakage and speed are less critical | Choose for cost-sensitive industrial controls where AEC-Q101 is not mandated |
Compared with BAS116T-7-F and BAV199T-7-F, BAW156T-7 uniquely delivers dual-diode functionality with automotive-grade leakage performance and speed in the smallest possible footprint - making it optimal for space-constrained, high-reliability analog protection where both channels must share a common node.
Availability
BAW156T-7 is available at Aetrix Electronics and suitable for automotive cabin sensors, industrial 4–20 mA input protection, and medical patient monitoring systems requiring stable component supply across extended product lifecycles.
Supply support for BAW156T-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
The BAW156T-7 belongs to Diodes' AEC-Q101-qualified low-leakage diode family, engineered specifically for precision analog protection in harsh-environment automotive and industrial control systems.
FAQ
What is the pin configuration of BAW156T-7?
BAW156T-7 uses a 3-pin SOT-523 package with Pin 1 = Anode of Diode 1, Pin 2 = Cathode of Diode 1 / Anode of Diode 2 (common node), and Pin 3 = Cathode of Diode 2. Polarity is marked by a cathode band adjacent to Pin 3 and top-side marking "53".
Is BAW156T-7 suitable for high-temperature automotive applications?
Yes - BAW156T-7 is AEC-Q101 qualified and specified for operation from –65°C to +150°C. Its leakage rises to 80 nA at 75 V and 150°C, remaining within design margins for under-hood sensor interface clamping circuits.
How does BAW156T-7 compare to BAV199T-7-F in ESD protection?
BAW156T-7 offers lower leakage (5 nA vs. 50 nA) and faster recovery (3.0 μs vs. 4.0 μs) than BAV199T-7-F, making it superior for precision analog paths where DC offset and transient fidelity matter - though both meet IEC 61000-4-2 Level 4 ESD immunity when properly laid out.
Can BAW156T-7 replace BAS116T-7 in existing designs?
No - BAS116T-7 is a single diode; BAW156T-7 is a dual diode with shared terminal (Pin 2). Direct replacement requires schematic and layout revision to accommodate the common-node architecture and verify that dual-diode behavior aligns with system-level clamping requirements.
BAW156T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 1 Pair Common Anode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 85 V
- Current - Average Rectified (Io) (per Diode):
- 125mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 50 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 3 µs
- Current - Reverse Leakage @ Vr:
- 5 nA @ 75 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
BAW156T-7 FAQ
1.How can I place an order for BAW156T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAW156T-7 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 BAW156T-7 reliable?
The price and inventory of BAW156T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAW156T-7 is usually 5 days.
3.What payment methods are accepted for BAW156T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAW156T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAW156T-7?
BAW156T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAW156T-7 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 BAW156T-7?
For technical support, including BAW156T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAW156T-7 requirements.
6.How does Aetrix verify that BAW156T-7 is sourced from the original manufacturer or authorized distributors?
All BAW156T-7 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 BAW156T-7 meets industry standards.
7.What is the process for return or replacement of BAW156T-7?
All BAW156T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAW156T-7, 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 BAW156T-7 part is unused and in its original packaging.
Return procedure for BAW156T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAW156T-7 Tags
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