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Vishay General Semiconductor - Diodes Division P6SMB24CAHM3_A/H
- Part No.:
- P6SMB24CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CAHM3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB24CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 24 V standoff voltage (VWM), 33.2 V clamping voltage (VC) at 18.1 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform. It protects signal lines and power rails in automotive sensor units, industrial I/O modules, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB24CAHM3_A/H datasheet, P6SMB24CAHM3_A/H pinout, P6SMB24CAHM3_A/H application, or P6SMB24CAHM3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification status, MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical breakdown in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable VBR (22.8–25.2 V at 1 mA) and low incremental surge resistance, enabling fast response (<1 ns) to sub-microsecond transients while maintaining <1.0 μA reverse leakage at 20.5 V.
The P6SMB24CAHM3_A/H is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive use. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ max = 150 °C) support reliable operation under repetitive surge conditions when mounted per recommended 0.2" × 0.2" pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Confirmed breakdown threshold range; ensures predictable clamping onset across production lot. |
| VC (Clamping Voltage) | 33.2 V at IPPM = 18.1 A - Peak voltage seen by protected circuit during 600 W transient; critical for IC-level overvoltage margining. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability with 10/1000 μs waveform; supports IEC 61000-4-5 Level 3/4 surge immunity. |
| ID (Reverse Leakage) | <1.0 μA at VWM - Negligible standby current draw; avoids signal line loading or battery drain in always-on systems. |
| TJ max | 150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments and industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 2.20 mm height and 3.94 mm length; compatible with J-STD-020 reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are functionally symmetric; both leads serve as interchangeable surge current paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge Current Input (Bidirectional) | Accepts transient current from either polarity; connects to protected line (e.g., CAN_H or RS-485 A). |
| Cathode | Surge Current Return (Bidirectional) | Completes transient path to ground or reference rail; electrically identical to anode in CA devices. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-609A Class 1 definition; eliminates brominated flame retardants without compromising UL 94 V-0 flammability rating. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/85 % RH; allows direct placement without baking or dry pack handling. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (open-circuit)/2 kA (short-circuit) without degradation. |
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage drift over 1000-hour HTOL testing at 125 °C. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching ASIC or MCU I/O. Use Value: Maintains signal integrity under 100 V/100 ms load dump events while adding <0.5 pF capacitance to preserve 500 kbps data rates. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation PLCs against EFT and surge coupling from motor drives. IC Role / Device Role / Timing Role: Line-side TVS on A/B differential pair, referenced to local ground plane to suppress common-mode transients. Use Value: Limits clamped voltage to 33.2 V, staying well below RS-485 receiver absolute maximum rating of ±12 V common-mode and ±15 V fault voltage. |
| Telecom DSL Line Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding ADSL/VDSL line drivers and SLIC circuits from lightning-induced surges entering via telephone line interface. IC Role / Device Role / Timing Role: Primary protection stage upstream of gas discharge tube (GDT) and secondary MOV, absorbing initial fast-rising edge. Use Value: Responds in <1 ns to 1.2/50 μs surges, clamping before GDT fires, reducing let-through energy by >60 % compared to GDT-only designs. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., washing machine drum drive, HVAC blower). IC Role / Device Role / Timing Role: Across-motor terminals to clamp flyback voltage spikes generated during PWM commutation. Use Value: Handles 100 A non-repetitive forward surge (IFSM), preventing MOSFET avalanche failure during abrupt motor stop/start cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Same VWM (20.5 V), VC (33.2 V), and PPPM (600 W); differs in packaging code (no HM3 suffix) and lacks AEC-Q101 qualification. | Not qualified for automotive use; suitable only for commercial/industrial applications where AEC-Q101 is not mandated. | Select SMBJ24CA if AEC-Q101 compliance is unnecessary and cost optimization is prioritized. |
| 1.5KE24CA | Through-hole TO-204AA (DO-15) package; same VWM/VC ratings but higher RθJA (75 °C/W vs. 100 °C/W) and larger footprint. | Requires PCB through-hole mounting and additional board area; incompatible with fully SMT production lines. | Choose 1.5KE24CA only when legacy through-hole assembly is required or thermal derating above 100 °C ambient is needed. |
Compared with SMBJ24CA and 1.5KE24CA, the P6SMB24CAHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint-enabling drop-in replacement in automotive ECUs without layout change, while offering superior moisture robustness and automated placement compatibility.
Availability
P6SMB24CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, and telecom line interface designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 traceability.
Supply support for P6SMB24CAHM3_A/H 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, rectifiers, and protection devices with emphasis on high-reliability, automotive-qualified components.
The P6SMB Series targets high-volume transient suppression in space-constrained, thermally demanding environments-designed specifically for automotive, industrial, and telecom applications needing robust, standardized, and AEC-Q101-compliant TVS solutions.
FAQ
What does the "HM3" suffix indicate in P6SMB24CAHM3_A/H?
The "HM3" suffix in P6SMB24CAHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with JEDEC J-STD-609A Class 1 and automotive stress testing requirements, distinguishing it from commercial-grade M3 or E3 variants. This makes the P6SMB24CAHM3_A/H suitable for under-hood and safety-critical automotive applications where material content and reliability are strictly regulated.
Is P6SMB24CAHM3_A/H pin-compatible with unidirectional P6SMB24A variants?
No, P6SMB24CAHM3_A/H is not pin-compatible with unidirectional P6SMB24A variants in functional circuit design. While both share the SMB (DO-214AA) package and physical pinout, the P6SMB24CAHM3_A/H is bidirectional with no cathode marking and symmetrical clamping, whereas P6SMB24A has a defined cathode band and unidirectional conduction. Interchanging them risks incorrect polarity connection and failure to suppress negative transients in bidirectional signal lines.
What is the maximum clamping voltage of P6SMB24CAHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB24CAHM3_A/H is 33.2 V at a peak pulse current (IPPM) of 18.1 A, measured with a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage imposed on the protected circuit during worst-case transient events, ensuring compatibility with 3.3 V and 5 V logic interfaces and automotive 24 V systems.
Does P6SMB24CAHM3_A/H require special PCB layout considerations?
Yes, P6SMB24CAHM3_A/H requires adherence to Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout per terminal to achieve rated 600 W pulse power and thermal performance. Narrow traces or undersized pads increase thermal resistance, causing premature thermal runaway during repetitive surges. The device must also be placed within 2 mm of the protected connector or IC pin to minimize inductance and preserve sub-nanosecond response.
How does the AEC-Q101 qualification of P6SMB24CAHM3_A/H impact its use in industrial applications?
The AEC-Q101 qualification of P6SMB24CAHM3_A/H provides enhanced confidence in long-term reliability for industrial applications-even outside automotive contexts-by validating performance under accelerated stress tests including temperature cycling, high-temperature reverse bias, and surge endurance. While not mandatory for industrial use, this qualification ensures lower infant mortality, tighter parametric distribution, and proven robustness in harsh thermal and electrical environments typical of factory automation and outdoor equipment.
P6SMB24CAHM3_A/H 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:
- Obsolete
- 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)
P6SMB24CAHM3_A/H FAQ
1.How can I place an order for P6SMB24CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CAHM3_A/H 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 P6SMB24CAHM3_A/H reliable?
The price and inventory of P6SMB24CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB24CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CAHM3_A/H?
P6SMB24CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CAHM3_A/H 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 P6SMB24CAHM3_A/H?
For technical support, including P6SMB24CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CAHM3_A/H requirements.
6.How does Aetrix verify that P6SMB24CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB24CAHM3_A/H 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 P6SMB24CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB24CAHM3_A/H?
All P6SMB24CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CAHM3_A/H, 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 P6SMB24CAHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB24CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24CAHM3_A/H Tags
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