My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB24CAHM3/H
- Part No.:
- P6SMB24CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CAHM3/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,937
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB24CAHM3/H 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 P6SMB24CAHM3/H datasheet, P6SMB24CAHM3/H pinout, P6SMB24CAHM3/H application, or P6SMB24CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, SMB (DO-214AA) package thermal resistance (RθJA = 100 °C/W), and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during transient overvoltage events exceeding its breakdown threshold (22.8–25.2 V at 1 mA), it rapidly switches to low-impedance conduction, diverting surge current away from downstream circuitry. Its bidirectional architecture ensures symmetrical clamping in both polarities without polarity marking.
Designed for automated SMT assembly, it uses glass-passivated junction technology and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The device is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications under the HM3 suffix designation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 22.8 V min / 25.2 V max at 1 mA - Confirmed voltage threshold where avalanche conduction begins; tight tolerance supports predictable protection onset. |
| VC (Clamping Voltage) | 33.2 V at 18.1 A IPPM - Peak voltage seen across protected circuit during 10/1000 μs surge; critical for IC-level voltage margining. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capacity per single 10/1000 μs transient; enables robustness against lightning-induced surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; determines derating above 25 °C ambient. |
| TJ max | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive environments. |
| MSL Level | Level 1 (per J-STD-020) - No floor life limitation; allows unlimited exposure to ambient conditions prior to reflow. |
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); molded compound meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | One terminal of symmetrical avalanche junction; connects to protected line or ground reference depending on layout. |
| Cathode | Transient return path (bidirectional) | Second terminal of symmetrical avalanche junction; functionally identical to anode; no band marking distinguishes polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per stress test requirements. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations; HM3 suffix denotes full compliance including lead-free solder compatibility and material declaration. |
| 600 W peak pulse power | Handles high-energy transients such as ISO 7637-2 pulse 1/2a/5a and IEC 61000-4-5 10/1000 μs surges without degradation. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns response time), improving protection fidelity. |
| MSL Level 1 reflow compatibility | Enables direct placement into standard SMT reflow ovens up to 260 °C peak without moisture-related failure risk. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between signal line and ground, absorbing surge energy before it reaches sensitive analog front-ends or communication ICs. Use Value: Maintains signal integrity during 12 V/24 V system load dump events (ISO 16750-2) by clamping to ≤33.2 V while surviving repetitive 600 W pulses. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to field wiring surges from motor contactors or solenoid coils. IC Role / Device Role / Timing Role: Parallel-connected TVS on each I/O pin to limit transient voltage to levels compatible with 3.3 V/5 V/24 V logic interfaces. Use Value: Prevents latch-up or permanent damage in microcontroller GPIOs and optocoupler inputs during 1 kV/500 A surge events per IEC 61000-4-5. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding Ethernet PHYs, DSL line drivers, or RS-485 transceivers from lightning-induced surges entering via unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Primary-level surge suppressor mounted at connector entry point, coordinated with secondary GDT or polymer-based protectors. Use Value: Limits induced common-mode voltage to <35 V during 10/1000 μs surges, preserving signal eye diagram integrity and preventing PHY reset. |
Use Scenario: Adding secondary-level surge immunity to AC-DC adapter outputs (e.g., 5 V USB ports) subjected to user-handling ESD and cable coupling noise. IC Role / Device Role / Timing Role: Low-capacitance (typ. 200 pF at 0 V) bidirectional clamp placed after primary filtering to suppress residual fast transients. Use Value: Achieves >15 kV air-gap ESD immunity (IEC 61000-4-2) without distorting DC output regulation or inducing audible noise in switching regulators. |
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, SMA package (smaller footprint, higher RθJA = 140 °C/W), same VWM/VBR range | Limited to lower-energy transients; less suitable for automotive load dump or industrial 10/1000 μs surges | Select when board space is constrained and surge energy does not exceed 400 W. |
| 1.5KE24CA | Through-hole DO-201 package, 1500 W PPPM, higher clamping voltage (36.2 V), no AEC-Q101 qualification | Better for high-energy, non-automotive applications; incompatible with SMT assembly and automotive qualification requirements | Choose only for legacy through-hole designs requiring higher peak power without SMT constraints. |
Compared with SMAJ24CA and 1.5KE24CA, P6SMB24CAHM3/H delivers optimal balance of 600 W surge handling, AEC-Q101 qualification, and SMB footprint - making it the preferred choice for new automotive and industrial SMT designs requiring validated reliability and standardized reflow compatibility.
Availability
P6SMB24CAHM3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and telecom line interface circuits requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for P6SMB24CAHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What does the "HM3" suffix indicate in P6SMB24CAHM3/H?
The "HM3" suffix in P6SMB24CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive reliability standards, JESD 201 Class 2 whisker resistance, and lead-free soldering compatibility - distinguishing it from commercial-grade M3 or E3 variants. This makes P6SMB24CAHM3/H suitable for under-hood and safety-critical automotive applications where material and qualification rigor are required.
Is P6SMB24CAHM3/H unidirectional or bidirectional?
P6SMB24CAHM3/H is a bidirectional TVS diode, as confirmed by the "CA" suffix and absence of cathode band marking. Its symmetrical breakdown behavior (VBR = 22.8–25.2 V in both directions) enables protection of AC-coupled or floating signal lines without polarity concerns - unlike unidirectional variants (e.g., P6SMB24A) which require correct orientation relative to ground. This bidirectional functionality is intrinsic to the P6SMB24CAHM3/H device structure.
What is the maximum clamping voltage of P6SMB24CAHM3/H at rated surge current?
The maximum clamping voltage of P6SMB24CAHM3/H is 33.2 V at 18.1 A peak pulse current (IPPM), measured under the standard 10/1000 μs double-exponential waveform. This value is guaranteed per datasheet Table "ELECTRICAL CHARACTERISTICS" and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Does P6SMB24CAHM3/H require special PCB layout considerations?
Yes - P6SMB24CAHM3/H requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and thermal performance. Smaller pads increase RθJA and reduce surge current handling. Layout must also minimize trace inductance between the device and protected node, and avoid routing high-speed signals near the TVS body to prevent capacitive coupling. These guidelines are specified in the P6SMB24CAHM3/H datasheet Figure "Mounting Pad Layout".
How does P6SMB24CAHM3/H compare to P6SMB24A in terms of application suitability?
P6SMB24CAHM3/H is bidirectional and AEC-Q101 qualified, whereas P6SMB24A is unidirectional and commercial-grade. The "CA" vs. "A" suffix directly determines polarity capability, and "HM3" adds automotive qualification and halogen-free materials. Thus, P6SMB24CAHM3/H is mandatory for automotive sensor buses or floating differential lines, while P6SMB24A suits grounded DC rails where polarity is fixed and qualification is not required - making them functionally non-interchangeable despite shared voltage ratings.
P6SMB24CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for P6SMB24CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CAHM3/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/H reliable?
The price and inventory of P6SMB24CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for P6SMB24CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CAHM3/H?
P6SMB24CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CAHM3/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/H?
For technical support, including P6SMB24CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CAHM3/H requirements.
6.How does Aetrix verify that P6SMB24CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB24CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of P6SMB24CAHM3/H?
All P6SMB24CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CAHM3/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/H part is unused and in its original packaging.
Return procedure for P6SMB24CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24CAHM3/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
