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Diodes Incorporated BAW156-7-F
- Part No.:
- BAW156-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAW156-7-F.pdf
- Description:
- DIODE ARRAY GP 85V 140MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:94,023
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Product details
Overview
BAW156-7-F from Diodes Incorporated is a dual surface-mount low-leakage silicon switching diode in SOT23 package, rated for 85 V peak repetitive reverse voltage, 160 mA forward current per diode, and exhibiting ≤5 nA leakage at 75 V and 25°C. It serves as a precision signal clamping or polarity protection element in low-power analog front-ends and sensor interface circuits.
For engineers reviewing the BAW156-7-F datasheet, BAW156-7-F pinout, BAW156-7-F application, or BAW156-7-F equivalent, key selection criteria include ultra-low IR (≤5 nA @ 75 V), fast trr (≤3.0 µs), dual-diode integration in SOT23, and AEC-Q101 qualification of the automotive-grade BAW156Q variant.
Technical Context
The BAW156-7-F integrates two independent silicon PN junction diodes in a single SOT23-3 package with common cathode configuration confirmed by internal schematic and top-view marking. Its design targets low-current signal routing where leakage-induced offset error must be minimized - especially in high-impedance nodes such as op-amp inputs or ADC reference paths.
Thermal performance is defined by RθJA = 500°C/W on FR-4 board with recommended pad layout, enabling operation up to +150°C junction temperature. The device uses matte tin-plated Alloy 42 leadframe and green molding compound compliant with RoHS 3 and halogen/antimony-free requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 85 V - supports DC blocking in 24 V industrial control rails and 48 V telecom interfaces without breakdown |
| IFM (per diode) | 160 mA - sufficient for biasing photodiodes, driving LED indicators, or low-duty-cycle logic-level clamping |
| IR @ 75 V, 25°C | ≤5 nA - ensures <1 µV offset error in 200 MΩ sensor bridge arms at room temperature |
| trr | ≤3.0 µs - enables reliable operation in 100 kHz–500 kHz signal conditioning and sample-hold circuits |
| CT @ 0 V, 1 MHz | 3 pF - minimizes capacitive loading on high-frequency analog signals (<100 MHz) and RF detector inputs |
| RθJA | 500 °C/W - requires derating to 125 mW at +75°C ambient for continuous operation on standard PCBs |
Pinout & Package
Package: SOT23-3, surface-mount, molded plastic (UL 94V-0), 0.008 g mass, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 | Input node for first clamping path; connects to signal source requiring bidirectional protection |
| 2 | Cathode (common) | Shared output node tied to reference rail (e.g., VCC or ground); defines dual-diode topology |
| 3 | Anode of Diode 2 | Input node for second independent clamping path; enables differential or complementary signal handling |
Key Features
| Feature | Design Value |
|---|---|
| Dual-diode integration in SOT23 | Reduces PCB area by ~40% vs. two discrete SOD-323 diodes while maintaining isolation between anodes |
| Leakage current ≤5 nA @ 75 V, 25°C | Preserves accuracy in µA-range current-sense amplifiers and high-Z instrumentation amplifier feedback networks |
| AEC-Q101 qualified variant (BAW156Q) | Enables drop-in use in automotive body electronics and ADAS sensor modules without requalification |
| Green, halogen/antimony-free construction | Meets IPC-1752A Class 3 material declarations for aerospace and medical OEM compliance reporting |
Applications
| Industrial Sensor Interface | Automotive Cabin Sensors |
|---|---|
Use Scenario: Protecting thermistor or RTD input stages in programmable logic controllers against ESD and overvoltage transients. IC Role / Device Role / Timing Role: Signal-level clamping diode placed before instrumentation amplifier inputs to limit common-mode excursions. Use Value: ≤5 nA leakage prevents >0.1% gain error in 10 GΩ bridge configurations; 3 pF capacitance avoids phase shift in 10 kHz anti-alias filters. | Use Scenario: Polarity protection for MEMS pressure sensors in HVAC control modules exposed to battery reverse-connection risk. IC Role / Device Role / Timing Role: Reverse-biased series diode blocking negative supply faults while allowing normal 5 V bias current flow. Use Value: 85 V VRRM withstands load-dump spikes up to ISO 7637-2 Pulse 5a; AEC-Q101 qualification ensures reliability across -40°C to +125°C. |
| Medical Wearable Front-End | IoT Node Power Management |
Use Scenario: ECG electrode input protection in portable biosensors operating from coin-cell batteries. IC Role / Device Role / Timing Role: Dual-anode clamp limiting differential input voltage to ±0.7 V while sharing cathode to AVSS. Use Value: Dual configuration eliminates need for two separate SOT23 packages; 160 mA IFM supports 100 µA bias currents with 10× safety margin. | Use Scenario: OR-ing diode in dual-supply IoT gateways using Li-ion + USB power sources. IC Role / Device Role / Timing Role: Low-leakage forward path enabling automatic source selection without quiescent current drain. Use Value: ≤5 nA IR prevents >1 µA standby current increase - critical for 10-year battery life in NB-IoT deployments. |
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 |
|---|---|---|---|
| BAV99-7-F | Higher IR (≤10 nA @ 75 V), same SOT23-3 package and VRRM (85 V) | Lacks AEC-Q101 qualification; not approved for automotive underhood use | Select when cost sensitivity outweighs leakage-critical performance and automotive compliance |
| MMBD7000LT1G | Lower VRRM (70 V), higher CT (4 pF), same IR spec (≤5 nA @ 75 V) | Not rated for 85 V systems; unsuitable for 48 V industrial bus protection | Choose only for sub-70 V applications where tighter capacitance tolerance is unnecessary |
Compared with BAV99-7-F and MMBD7000LT1G, the BAW156-7-F delivers superior leakage performance at full-rated voltage and supports automotive-grade deployment via its qualified derivative, making it optimal for precision analog and safety-conscious embedded designs.
Availability
BAW156-7-F is available at Aetrix Electronics and suitable for industrial sensor interface, automotive cabin sensors, medical wearable front-end, and IoT node power management requiring stable component supply and long-term manufacturability.
Supply support for BAW156-7-F 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 ASE, Amkor, and its own facilities.
The BAW156 belongs to Diodes' precision signal diode product line, engineered specifically for low-leakage, high-voltage clamping in space-constrained analog signal chains and automotive sensor subsystems.
FAQ
What is the pin configuration of BAW156-7-F?
The BAW156-7-F uses a SOT23-3 package with Pin 1 = Anode 1, Pin 2 = Common Cathode, Pin 3 = Anode 2. This common-cathode dual-diode arrangement is verified in the internal schematic diagram on page 2 of DS30231 Rev. 11-2 and matches the top-view marking "K53" orientation.
Is BAW156-7-F suitable for automotive applications?
The BAW156-7-F itself is not AEC-Q101 qualified; however, its automotive-grade variant BAW156Q-7-F is fully qualified, PPAP-capable, and manufactured in IATF16949-certified facilities. For production automotive use, BAW156Q-7-F must be specified.
How does BAW156-7-F perform at elevated temperature?
At +150°C junction temperature, leakage increases to ≤80 nA at 75 V, and forward voltage drops by ~200 mV versus 25°C. Power dissipation must be derated linearly above +25°C using RθJA = 500°C/W, limiting PD to 125 mW at +75°C ambient.
Can BAW156-7-F replace BAV99 in existing designs?
Yes, BAW156-7-F is pin-compatible with BAV99-7-F and offers lower leakage (≤5 nA vs. ≤10 nA), identical VRRM (85 V), and same SOT23-3 footprint. No layout change is needed, but verify that reduced leakage improves system accuracy without affecting bias network stability.
BAW156-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Anode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 85 V
- Current - Average Rectified (Io) (per Diode):
- 140mA (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-23-3
BAW156-7-F FAQ
1.How can I place an order for BAW156-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAW156-7-F 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 BAW156-7-F reliable?
The price and inventory of BAW156-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAW156-7-F is usually 5 days.
3.What payment methods are accepted for BAW156-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAW156-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAW156-7-F?
BAW156-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAW156-7-F 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 BAW156-7-F?
For technical support, including BAW156-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAW156-7-F requirements.
6.How does Aetrix verify that BAW156-7-F is sourced from the original manufacturer or authorized distributors?
All BAW156-7-F 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 BAW156-7-F meets industry standards.
7.What is the process for return or replacement of BAW156-7-F?
All BAW156-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAW156-7-F, 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 BAW156-7-F part is unused and in its original packaging.
Return procedure for BAW156-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAW156-7-F Tags
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