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Vishay General Semiconductor - Diodes Division P6SMB24CAHE3_B/I
- Part No.:
- P6SMB24CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CAHE3_B/I.pdf
- Description:
- 600W,24V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,903
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Product details
Overview
P6SMB24CAHE3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 24 V standoff voltage (VWM), 33.2 V maximum clamping voltage at 18.1 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the P6SMB24CAHE3_B/I datasheet, P6SMB24CAHE3_B/I pinout, P6SMB24CAHE3_B/I application, or P6SMB24CAHE3_B/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) for board-level transient energy dissipation.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during overvoltage events exceeding its breakdown threshold (22.8–25.2 V at 1 mA), it rapidly transitions to low-impedance conduction, diverting surge current away from downstream circuitry. Its bidirectional architecture ensures symmetrical clamping in both polarities without polarity marking.
It delivers 600 W peak pulse power handling per 10/1000 μs waveform under derated conditions, with a maximum junction temperature of +150 °C and MSL Level 1 moisture sensitivity. The glass-passivated junction and matte tin-plated SMB terminals support automated SMT placement and J-STD-002 solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping onset |
| VBR (Breakdown Voltage) | 22.8 V min / 25.2 V max at 1 mA - Voltage at which device enters avalanche conduction; determines precise clamping initiation point |
| VC (Clamping Voltage) | 33.2 V at 18.1 A IPPM - Peak voltage seen by protected circuit during full-rated surge; critical for IC-level voltage tolerance compliance |
| PPPM (Peak Pulse Power) | 600 W - Surge energy absorption capacity under standardized 10/1000 μs waveform; enables robust lightning/ESD immunity |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB thermal design for repetitive surge duty |
| TJ max | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and industrial ambient environments |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress; designated by HE3 suffix and _B revision |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode/anode terminals are symmetric and interchangeable in bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (negative polarity event) | One terminal of symmetrical PN junction; conducts during negative transients relative to reference ground |
| Cathode | Surge current entry (positive polarity event) | Other terminal of symmetrical PN junction; conducts during positive transients - functionally identical to Anode in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and IPPM in both polarities - eliminates need for polarity-aware layout in differential or AC-coupled lines |
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements - enables use in ADAS sensors, body control modules, and infotainment power rails |
| 600 W 10/1000 μs surge rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surges when properly mounted - suitable for industrial Ethernet and CAN FD bus protection |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response) - preserves timing integrity in high-speed signal paths |
| MSL Level 1, 260 °C reflow compatible | Zero floor life limitation and full lead-free reflow profile support - simplifies high-volume SMT manufacturing without baking |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between signal line and chassis ground to limit transient excursions to ≤33.2 V. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADC drivers while maintaining signal fidelity under 100 kHz bandwidth. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff voltage (20.5 V) aligns with 24 V nominal rail; clamps transients within PLC input stage voltage tolerance window. Use Value: Enables >100,000 surge cycles without degradation, meeting IEC 61000-4-4 Level 3 immunity requirements for factory automation equipment. |
| Telecom Line Interface | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485 transceiver data lines in base station remote radio units from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Placed differentially across A/B lines with GND reference; leverages bidirectional symmetry for balanced clamping. Use Value: Limits differential surge voltage to <35 V, preserving transceiver common-mode range and preventing false triggering during burst events. |
Use Scenario: Secondary-level protection on VBUS and D+/D− lines of USB 2.0 ports in smart home hubs subjected to human-body-model (HBM) ESD. IC Role / Device Role / Timing Role: Fast-response TVS absorbing 8 kV contact discharge energy before reaching internal USB PHY. Use Value: Achieves <1 ns response time and <0.5 pF junction capacitance (per Vishay typical curves), avoiding signal integrity loss at 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | 400 W PPPM rating; same VWM/VC but lower IPPM (12.3 A); SMA package (smaller footprint, higher RθJA) | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump | Select when board space is constrained and surge threat level is limited to HBM/IEC 61000-4-2 only |
| 1.5KE24CA | Through-hole DO-201 package; 1500 W PPPM; higher VC (38.9 V); slower response due to larger junction | Better for high-energy, low-frequency surges (e.g., AC mains); incompatible with SMT-only assembly | Choose for legacy through-hole designs or where higher clamping voltage is acceptable for cost-sensitive industrial power supplies |
Compared with SMAJ24CA and 1.5KE24CA, P6SMB24CAHE3_B/I uniquely balances 600 W surge capability, AEC-Q101 qualification, SMB footprint, and 33.2 V clamping - making it optimal for new automotive and industrial SMT designs requiring validated reliability and compact layout.
Availability
P6SMB24CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line surge suppression requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for P6SMB24CAHE3_B/I 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping behavior, AEC-Q101 validation, and optimized thermal performance in the SMB package.
FAQ
What is the clamping voltage of P6SMB24CAHE3_B/I at its rated peak pulse current?
The P6SMB24CAHE3_B/I has a maximum clamping voltage (VC) of 33.2 V at its rated peak pulse current (IPPM) of 18.1 A, measured under the standardized 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88370, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during full-rated surge events. Designers must verify that downstream components tolerate this clamping level under worst-case transient conditions.
Is P6SMB24CAHE3_B/I suitable for automotive applications?
Yes, P6SMB24CAHE3_B/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix and "_B" revision code in its ordering designation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements. This makes P6SMB24CAHE3_B/I appropriate for under-hood and cabin electronics such as sensor interfaces, body control modules, and infotainment power rails where automotive-grade reliability is mandatory.
What does the "CA" suffix indicate in P6SMB24CAHE3_B/I?
The "CA" suffix in P6SMB24CAHE3_B/I denotes a bidirectional Transient Voltage Suppressor configuration. Unlike unidirectional variants (e.g., P6SMB24A), the CA version provides symmetrical clamping characteristics in both polarities - meaning it functions identically whether the transient is positive or negative relative to ground. No polarity marking is present on the SMB package, and both terminals are electrically equivalent for surge conduction.
What is the thermal resistance of P6SMB24CAHE3_B/I, and how does it affect PCB layout?
P6SMB24CAHE3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's package drawing. To maintain safe junction temperatures during repetitive surges, designers must provide adequate copper area and avoid excessive trace length or isolation - especially in high-ambient-temperature environments like automotive engine compartments.
How does the SMB (DO-214AA) package of P6SMB24CAHE3_B/I compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of P6SMB24CAHE3_B/I offers a 4.57 mm × 3.94 mm footprint - smaller than SMC (DO-214AB) but larger than SMA (DO-214AC). It delivers higher surge power (600 W) than SMAJ-series (400 W) while maintaining compatibility with standard SMT pick-and-place equipment and reflow profiles. Its RθJA of 100 °C/W is superior to SMA's ~125 °C/W, enabling better thermal performance in space-constrained yet thermally demanding applications.
P6SMB24CAHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 18.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB24CAHE3_B/I FAQ
1.How can I place an order for P6SMB24CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CAHE3_B/I 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 P6SMB24CAHE3_B/I reliable?
The price and inventory of P6SMB24CAHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB24CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CAHE3_B/I?
P6SMB24CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CAHE3_B/I 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 P6SMB24CAHE3_B/I?
For technical support, including P6SMB24CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CAHE3_B/I requirements.
6.How does Aetrix verify that P6SMB24CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB24CAHE3_B/I 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 P6SMB24CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB24CAHE3_B/I?
All P6SMB24CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CAHE3_B/I, 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 P6SMB24CAHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB24CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24CAHE3_B/I Tags
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