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Nexperia USA Inc. BAS21PG-QX
- Part No.:
- BAS21PG-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
BAS21PG-QX.pdf
- Description:
- DIODE ARRAY GP 250V 225MA SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:6,815
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Product details
Overview
BAS21PG-Q from Nexperia is a dual isolated high-voltage switching diode in SOT353 (SC-88A) package, designed for automotive-grade voltage clamping and reverse polarity protection. It delivers 250 V reverse breakdown voltage, ≤50 ns reverse recovery time, ≤2 pF capacitance, and AEC-Q101 qualification - enabling reliable operation in 12 V/24 V automotive power rail protection circuits.
For engineers reviewing the BAS21PG-Q datasheet, BAS21PG-Q pinout, BAS21PG-Q application, or BAS21PG-Q equivalent, key selection criteria include verified dual-diode isolation, high-voltage transient suppression capability, thermal resistance (Rth(j-a) = 495 K/W), and compatibility with reflow-soldered TSSOP5 footprints in space-constrained ECUs.
Technical Context
This dual-diode device integrates two electrically isolated high-voltage PN junctions in a single ultra-compact SOT353 package. Each diode supports independent 250 V reverse blocking and exhibits fast 50 ns recovery under 10 mA/10 mA test conditions, making it suitable for bidirectional transient suppression and polarity reversal paths.
The device operates across −55 °C to +150 °C ambient, with thermal resistance optimized for FR4 PCB mounting (495 K/W junction-to-ambient). Its low 25 nA typical reverse leakage at 200 V and 25 °C ensures minimal standby power loss in always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 250 V max - enables use in 24 V automotive systems with ≥100 % safety margin against load-dump transients. |
| Reverse Recovery Time (trr) | ≤50 ns - supports high-frequency switching up to ~10 MHz in clamp/snubber circuits without excessive switching loss. |
| Diode Capacitance (Cd) | ≤2 pF at 0 V - minimizes signal distortion and crosstalk in high-speed data line protection applications. |
| Forward Voltage (VF) | 1.25 V max at 200 mA - limits conduction loss to <250 mW per diode under full-rated DC current. |
| Reverse Leakage (IR) | 25 nA typ at 200 V/25 °C - ensures negligible quiescent current draw in battery-backed modules. |
| Junction Temperature (Tj) | 150 °C max - allows sustained operation in engine bay environments without derating below 125 °C ambient. |
Pinout & Package
Package: SOT353 (TSSOP5), 5-lead surface-mount plastic package, 2.1 mm × 1.25 mm × 0.95 mm body, 0.65 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode Diode 1 (A1) | Input terminal for first diode; connects to protected line or signal source requiring forward conduction path. |
| 2 | No Connect (n.c.) | Internally unconnected; must remain floating - no PCB trace or solder mask required. |
| 3 | Anode Diode 2 (A2) | Independent input for second diode; enables dual-rail or complementary polarity protection. |
| 4 | Kathode Diode 2 (K2) | Return path for Diode 2; routed separately to ground or reference node to maintain isolation. |
| 5 | Kathode Diode 1 (K1) | Return path for Diode 1; electrically isolated from K2 to prevent cross-coupling in dual-path designs. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under temperature cycling, HTRB, and ESD stress - eliminates need for additional qualification testing. |
| Dual isolated diodes | Electrically separate anode/cathode pairs (A1/K1 and A2/K2) enable independent protection of two signals or rails without shared return impedance. |
| Ultra-low capacitance | 0.8–2 pF range at 0 V reverse bias - preserves signal integrity in CAN FD, LIN, or sensor interface lines. |
| High-speed recovery | 50 ns trr measured with 10 mA IF/IR and 1 mA measurement threshold - ensures clean turn-off during fast transients. |
| Small footprint | SOT353 package occupies 2.6 mm² PCB area - reduces layout space vs. discrete SO-33 or SOT23 dual-diode alternatives. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Clamping |
|---|---|
|
Use Scenario: Protecting 12 V/24 V supply inputs in body control modules against ISO 7637-2 pulse 5a/b load dump transients. IC Role / Device Role / Timing Role: Dual-diode clamping network where A1/K1 and A2/K2 independently shunt positive and negative overvoltage spikes to ground. Use Value: 250 V VR rating provides 2× margin over 120 V peak load dump; 50 ns trr prevents latch-up during sub-microsecond surges. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Bidirectional TVS-like clamping element placed between signal line and ground, leveraging low Cd to avoid bandwidth degradation. Use Value: 2 pF capacitance maintains >100 MHz signal bandwidth; 25 nA IR ensures <1 µV offset error in µA-level sensor current loops. |
| Reverse Polarity Input Protection | High-Voltage Logic-Level Translation |
|
Use Scenario: Preventing damage when external 24 V power supplies are connected with reversed polarity in telematics units. IC Role / Device Role / Timing Role: Series-connected diode (A1→K1) blocks reverse current while A2/K2 provides alternate path for fault current routing. Use Value: 225 mA continuous forward current rating supports >2 W input power delivery; 1.25 V VF limits voltage drop to <5 % at full load. |
Use Scenario: Level-shifting 3.3 V logic signals to interface with 24 V industrial I/O modules while maintaining noise immunity. IC Role / Device Role / Timing Role: High-voltage clamping diode pair (A1/K1 and A2/K2) referenced to different rails to define logic thresholds at 24 V and GND. Use Value: Isolated cathodes allow independent biasing; 250 V VR enables safe operation even during 24 V bus faults or surge coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR20F20HT1G | Single diode, 200 V VR, 35 ns trr, SOD-323 package - lacks dual isolation and AEC-Q101 certification. | Not suitable for dual-rail protection; requires two devices and extra PCB area to match BAS21PG-Q functionality. | Select only if single-diode function suffices and automotive qualification is not required. |
| Vishay VS-2EDH02-M3/86A | Dual diode in SOT-363, 200 V VR, 75 ns trr, no AEC-Q101 - higher trr and lower VR limit performance in fast transient suppression. | Acceptable for non-automotive 24 V systems but fails ISO 16750-2 pulse testing due to slower recovery and unqualified reliability. | Use only in cost-sensitive industrial controls where AEC-Q101 and sub-50 ns trr are not mandated. |
Compared with NSR20F20HT1G and VS-2EDH02-M3/86A, BAS21PG-Q uniquely combines dual isolated structure, 250 V rating, 50 ns trr, and AEC-Q101 qualification - enabling single-device compliance with automotive EMC and reliability requirements without design compromise.
Availability
BAS21PG-Q is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface clamping, and reverse polarity input safeguarding requiring stable component supply across multi-year production cycles.
Supply support for BAS21PG-Q 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 BAS21PG-Q belongs to Nexperia's AEC-Q101-qualified high-voltage diode product line, engineered specifically for robust transient suppression and polarity protection in harsh automotive and industrial environments.
FAQ
Is BAS21PG-Q pin-compatible with BAS21DW or BAS21J?
No. BAS21PG-Q uses SOT353 (5-pin) with isolated dual diodes and n.c. pin, whereas BAS21DW is SOT363 (6-pin) and BAS21J is DO-35 glass package. Pin count, pinout, and isolation topology differ fundamentally - direct replacement requires PCB redesign.
What is the maximum allowable peak forward current for BAS21PG-Q?
The non-repetitive peak forward current (IFSM) is 9 A for 1 µs pulses and 1.7 A for 10 ms pulses at Tj(init) = 25 °C. These values are defined in Table 5 and validated per IEC 60134 absolute maximum ratings - exceeding them risks permanent junction damage.
Can BAS21PG-Q be used in place of a TVS diode for ESD protection?
No. While it offers clamping behavior, BAS21PG-Q is not rated for IEC 61000-4-2 ESD levels. Its 250 V VR and 50 ns trr suit high-voltage transient suppression, but dedicated TVS diodes provide guaranteed clamping voltage, lower dynamic resistance, and certified ESD robustness.
Does the n.c. pin (Pin 2) require PCB pad or solder mask opening?
No. Pin 2 is internally unconnected and must remain electrically floating. No copper pad, solder paste, or solder mask opening is needed - standard SOT353 footprint (Fig. 11) excludes this pin from the land pattern to prevent unintended solder bridging or mechanical stress.
BAS21PG-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 2 Independent
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 250 V
- Current - Average Rectified (Io) (per Diode):
- 225mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 200 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 200 V
- Operating Temperature - Junction:
- 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
BAS21PG-QX FAQ
1.How can I place an order for BAS21PG-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS21PG-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 BAS21PG-QX reliable?
The price and inventory of BAS21PG-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS21PG-QX is usually 5 days.
3.What payment methods are accepted for BAS21PG-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS21PG-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS21PG-QX?
BAS21PG-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS21PG-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 BAS21PG-QX?
For technical support, including BAS21PG-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS21PG-QX requirements.
6.How does Aetrix verify that BAS21PG-QX is sourced from the original manufacturer or authorized distributors?
All BAS21PG-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 BAS21PG-QX meets industry standards.
7.What is the process for return or replacement of BAS21PG-QX?
All BAS21PG-QX units undergo pre-shipment inspection (PSI). If there is an issue with BAS21PG-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 BAS21PG-QX part is unused and in its original packaging.
Return procedure for BAS21PG-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS21PG-QX Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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