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Vishay General Semiconductor - Diodes Division P6SMB24CAHE3/52
- Part No.:
- P6SMB24CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CAHE3/52.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,264
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Product details
Overview
P6SMB24CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 24 V standoff voltage (VWM), 33.2 V maximum clamping voltage (VC) at 18.1 A peak pulse current (IPPM), 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the P6SMB24CAHE3/52 datasheet, P6SMB24CAHE3/52 pinout, P6SMB24CAHE3/52 application, or P6SMB24CAHE3/52 equivalent, this device serves as a robust, surface-mount overvoltage protection solution for bidirectional signal paths in automotive sensor interfaces, industrial I/O modules, and telecom line cards where low clamping voltage and fast response (<1 ns) are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 22.8–25.2 V (min/max) under 1 mA test current. Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while the glass-passivated junction delivers stable performance over temperature (TJ = –65 °C to +150 °C).
The device complies with J-STD-020 MSL Level 1 and withstands 260 °C lead-free reflow. Its 100 °C/W junction-to-ambient thermal resistance requires PCB copper pad design per recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) layout for rated 600 W pulse handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 20.5 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below circuit rail. |
| VBR (Breakdown) | 22.8–25.2 V @ 1 mA - Voltage at which device enters avalanche conduction; tight tolerance enables precise protection threshold setting. |
| VC (Clamping) | 33.2 V @ 18.1 A - Maximum voltage seen by protected circuit during 10/1000 μs surge; directly limits stress on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capability; supports high-energy transients like ISO 7637-2 Pulse 1/2a/5a in automotive systems. |
| IPPM | 18.1 A - Peak pulse current at rated clamping voltage; determines minimum trace width and PCB copper area needed for safe dissipation. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments without derating. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
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); matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive polarity) | Conducts surge current into device during positive-going transients; connects to protected line. |
| Cathode | Transient current entry point (negative polarity) | Conducts surge current into device during negative-going transients; connects to same protected line (bidirectional symmetry). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power (10/1000 μs) | Handles high-energy surges common in automotive load-dump and inductive switching events. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on protected ICs-critical for 3.3 V/5 V logic and analog front-ends. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
| Glass passivated junction | Ensures long-term stability and low leakage (<1 μA at VWM) across temperature and lifetime. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensor outputs from ESD and battery dump transients in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller input pin. Use Value: Limits transient voltage to ≤33.2 V, preventing latch-up or gate oxide damage in 5 V tolerant MCU GPIOs. |
Use Scenario: Safeguarding 4–20 mA current loop receiver circuits against field wiring surges and lightning-induced spikes. IC Role / Device Role / Timing Role: Primary overvoltage shunt element across input terminals of precision op-amp-based current-to-voltage converter. Use Value: Clamps transients within 1 ns, preserving signal integrity and avoiding ADC saturation during surge events. |
| Telecom Line Card Protection | Consumer USB Port ESD Guard |
Use Scenario: Shielding Ethernet PHY differential pairs and management interface lines (I²C, UART) from induced surges in outdoor base station equipment. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to chassis ground, placed upstream of ESD diode array. Use Value: Absorbs up to 600 W of coupled energy without degradation, maintaining signal eye diagram integrity post-surge. |
Use Scenario: Secondary-level protection for USB 2.0 D+/D– lines in portable devices exposed to human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance (CJ < 100 pF typical) bidirectional clamp bridging data lines to ground. Use Value: Provides 30 kV contact ESD immunity while adding <0.5 pF parasitic capacitance per line-no USB signal integrity impact. |
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 | Same VWM (20.5 V), lower PPPM (400 W), SMA package (larger footprint, higher RθJA = 140 °C/W) | Not AEC-Q101 qualified; suitable for commercial-grade consumer/industrial boards only. | Select when cost is prioritized over automotive qualification and board space allows larger SMA footprint. |
| SMCJ24CA | Same VWM (20.5 V), higher PPPM (1500 W), SMC package (5.3 mm × 4.6 mm), higher IPPM (69.4 A) | Overqualified for 600 W needs; adds 3× PCB area and higher parasitic inductance. | Choose only if system-level surge testing exceeds IEC 61000-4-5 Level 4 (4 kV/2 Ω) and requires headroom beyond 600 W. |
Compared with SMAJ24CA and SMCJ24CA, P6SMB24CAHE3/52 delivers optimal balance of AEC-Q101 compliance, 600 W surge rating, and compact SMB footprint-making it the preferred choice for space-constrained automotive and industrial designs requiring validated reliability.
Availability
P6SMB24CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line card protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB24CAHE3/52 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 targets high-reliability transient suppression in automotive, industrial, and telecom systems-designed for robustness under harsh electrical and thermal conditions with AEC-Q101 and RoHS/halogen-free compliance built-in.
FAQ
What is the clamping voltage of P6SMB24CAHE3/52 at its rated peak pulse current?
The P6SMB24CAHE3/52 has a maximum clamping voltage (VC) of 33.2 V at 18.1 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88370 and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB24CAHE3/52 maintains this clamping performance across its full operating temperature range (–65 °C to +150 °C) with minimal drift.
Is P6SMB24CAHE3/52 suitable for automotive applications?
Yes, P6SMB24CAHE3/52 is AEC-Q101 qualified (denoted by HE3 suffix) and specifically tested for automotive reliability-including temperature cycling, high-temperature reverse bias, and ESD. It meets the surge immunity requirements of ISO 7637-2 for power line transients and is widely deployed in engine control units, body control modules, and ADAS sensor interfaces. The P6SMB24CAHE3/52 also complies with J-STD-020 MSL Level 1 for lead-free reflow compatibility.
How does the bidirectional configuration of P6SMB24CAHE3/52 affect PCB layout?
The P6SMB24CAHE3/52 has no polarity marking and functions identically in both directions, simplifying PCB layout by eliminating orientation constraints. It can be placed symmetrically across differential lines (e.g., RS-485, CAN) or on single-ended lines referenced to ground. Layout must follow Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal to sustain 600 W pulses. No anode/cathode routing distinction is needed-the P6SMB24CAHE3/52 connects directly between line and ground (or line-to-line).
What is the maximum steady-state power dissipation of P6SMB24CAHE3/52?
The P6SMB24CAHE3/52 has a maximum steady-state power dissipation (PD) of 5.0 W at ambient temperature (TA) = 50 °C with infinite heatsink conditions. In typical PCB mounting (0.2" × 0.2" pads), derating applies above 25 °C per Figure 2 in the datasheet. Continuous DC power must remain well below 5.0 W to avoid thermal runaway; the P6SMB24CAHE3/52 is intended for transient-not continuous-power dissipation.
Does P6SMB24CAHE3/52 have a specified junction capacitance?
Vishay does not publish a guaranteed maximum junction capacitance (CJ) for P6SMB24CAHE3/52 in the official datasheet (Document 88370). However, typical CJ values for the P6SMB24CA variant are <100 pF at zero bias (per Figure 4), and <50 pF at VWM = 20.5 V. For high-speed signal lines (e.g., USB, HDMI), designers should verify signal integrity with actual board-level measurements, as CJ varies with applied voltage and temperature. The P6SMB24CAHE3/52 is not optimized for RF or GHz-frequency applications.
P6SMB24CAHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB24CAHE3/52 FAQ
1.How can I place an order for P6SMB24CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CAHE3/52 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 P6SMB24CAHE3/52 reliable?
The price and inventory of P6SMB24CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24CAHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB24CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CAHE3/52?
P6SMB24CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CAHE3/52 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 P6SMB24CAHE3/52?
For technical support, including P6SMB24CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CAHE3/52 requirements.
6.How does Aetrix verify that P6SMB24CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB24CAHE3/52 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 P6SMB24CAHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB24CAHE3/52?
All P6SMB24CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CAHE3/52, 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 P6SMB24CAHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB24CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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