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Vishay General Semiconductor - Diodes Division P6SMB30CA-E3/5B
- Part No.:
- P6SMB30CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB30CA-E3/5B.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB30CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), and 41.4 V maximum clamping voltage (VC) at 14.5 A peak pulse current (IPPM). It delivers 600 W peak pulse power (10/1000 μs waveform) for protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in industrial and automotive electronics.
For engineers reviewing the P6SMB30CA-E3/5B datasheet, P6SMB30CA-E3/5B pinout, P6SMB30CA-E3/5B application, or P6SMB30CA-E3/5B equivalent, this device is selected for robust bidirectional overvoltage protection where low clamping ratio, fast response time, and AEC-Q101 qualification (via HE3/HM3 variants) are critical - especially in 24 V automotive subsystems, industrial PLC I/O modules, and telecom interface circuits.
Technical Context
The P6SMB30CA-E3/5B operates as a bidirectional avalanche diode, symmetrically clamping voltage surges in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while its 100 °C/W junction-to-ambient thermal resistance requires careful PCB copper pad design (0.2" × 0.2") for sustained 5.0 W power dissipation.
Designed for transient suppression per IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT), it exhibits sub-nanosecond response time and low incremental surge resistance - enabling effective protection of downstream CMOS inputs and analog front-ends without signal distortion or latch-up risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30 V - Maximum continuous reverse voltage before conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown min) | 33.3 V at 1.0 mA - Guaranteed avalanche initiation voltage; ensures predictable turn-on during transients. |
| VC (Clamping max) | 41.4 V at 14.5 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines safe voltage headroom for 3.3 V/5 V/24 V systems. |
| PPPM | 600 W - Sustains high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/3a) without failure under specified test conditions. |
| IPPM | 14.5 A - Peak surge current capability at VC; correlates directly to system-level surge immunity level. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial ambient environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 3.94 mm × 2.20 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | No polarity marking; symmetrical terminals enable identical clamping behavior for positive and negative transients. |
| Cathode | Current exit point in forward bias; common terminal in bidirectional configuration | Identical to Anode electrically; device functions identically regardless of orientation on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against high-energy load dump and inductive kick events in 24 V systems. |
| Low clamping ratio (VC/VBR = 1.24) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V logic and precision analog sensors. |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime. |
| MSL Level 1 moisture sensitivity | Eliminates bake requirements prior to reflow; supports standard SMT assembly without special handling. |
| AEC-Q101 qualified variants available | HE3/HM3 suffix versions meet automotive reliability standards for engine control, body electronics, and ADAS interfaces. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from load dump and alternator ripple in 12 V/24 V vehicle networks. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at connector entry point to shunt surge energy before reaching sensitive ICs. Use Value: Limits transient voltage to ≤41.4 V during 100 V/50 ms load dump events, preventing latch-up and permanent damage to 5 V tolerant MCU pins. | Use Scenario: Shielding 24 V digital input channels from field-wiring induced transients (e.g., relay coil de-energization, motor stop). IC Role / Device Role / Timing Role: Primary overvoltage clamp on input conditioning circuit, upstream of optocoupler or Schmitt trigger. Use Value: Clamps 1 kV/50 Ω surge to <42 V within <1 ns, preserving signal integrity and enabling reliable edge detection in noisy factory environments. |
| Telecom Ethernet PHY Interface | Consumer Appliance Motor Driver Board |
Use Scenario: Safeguarding RJ45 magnetics secondary side and PHY IC pins against ESD (IEC 61000-4-2 ±8 kV contact) and lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-side TVS on differential pairs (TX+/TX−, RX+/RX−) to suppress common-mode transients. Use Value: Maintains <0.5 pF junction capacitance at zero bias, avoiding signal integrity degradation in 100BASE-TX applications. | Use Scenario: Protecting gate drivers and bootstrap FETs in BLDC motor inverters from shoot-through-inducing voltage spikes during PWM switching. IC Role / Device Role / Timing Role: Local clamp across half-bridge supply rails to absorb inductive energy from parasitic trace inductance. Use Value: Withstands repetitive 600 W pulses at 0.01% duty cycle, ensuring reliability over 10,000+ motor start-stop cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Same VWM (30 V), identical SMB package, but lower PPPM = 600 W (same rating), slightly higher VC = 48.4 V at 12.4 A | Higher clamping voltage reduces margin for 3.3 V/5 V circuits; suitable where board space allows larger footprint alternatives | Select when legacy SMBJ footprint compatibility is required and clamping voltage margin >18 V is acceptable. |
| 1.5KE30CA | Through-hole DO-15 package, same VWM/VBR, but higher PPPM = 1500 W and larger VC = 48.4 V at 31 A | Not surface-mountable; used in prototyping or high-reliability through-hole designs where manual assembly is acceptable | Choose only for through-hole designs requiring higher single-pulse energy absorption; not drop-in for SMB layout. |
Compared with SMBJ30CA and 1.5KE30CA, the P6SMB30CA-E3/5B offers optimal balance of low-profile SMB packaging, industry-standard 600 W rating, and tight 41.4 V clamping - making it preferred for space-constrained, high-volume SMT applications in automotive and industrial control where precise voltage limiting is essential.
Availability
P6SMB30CA-E3/5B is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and telecom interface circuits requiring stable component supply, RoHS-compliant materials, and consistent tape-and-reel delivery.
Supply support for P6SMB30CA-E3/5B 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 TVS devices with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness, consistency, and AEC-Q101 qualification are mandatory.
FAQ
What is the clamping voltage of the P6SMB30CA-E3/5B at its rated peak pulse current?
The P6SMB30CA-E3/5B has a maximum clamping voltage (VC) of 41.4 V at 14.5 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is guaranteed across temperature and lot variations per Vishay's datasheet revision 09-Jan-2024, Document Number 88370. The P6SMB30CA-E3/5B achieves this clamping performance while maintaining low leakage (<1.0 μA at 30 V) and fast response, making it suitable for protecting 3.3 V, 5 V, and 24 V circuits.
Is the P6SMB30CA-E3/5B suitable for automotive applications?
The P6SMB30CA-E3/5B itself is RoHS-compliant commercial-grade; however, Vishay offers AEC-Q101 qualified variants under HE3/HM3 suffixes (e.g., P6SMB30CAHE3_B). While the P6SMB30CA-E3/5B shares identical electrical specs and SMB package, full automotive qualification requires the HE3 or HM3 version. For non-safety-critical 12 V/24 V subsystems like infotainment or lighting controls, the P6SMB30CA-E3/5B may be used with customer validation - but the P6SMB30CA-E3/5B is not AEC-Q101 certified out-of-box.
What does the "CA" suffix indicate in P6SMB30CA-E3/5B?
The "CA" suffix in P6SMB30CA-E3/5B denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants (e.g., P6SMB30A), the CA version has no cathode band marking and exhibits identical VBR, VC, and IPPM characteristics in either polarity. This makes the P6SMB30CA-E3/5B ideal for AC-coupled lines, differential signals, and systems where polarity reversal or bipolar surges are possible.
What is the thermal resistance and power derating behavior of the P6SMB30CA-E3/5B?
The P6SMB30CA-E3/5B 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. Its steady-state power dissipation (PD) is rated at 5.0 W at TA = 50 °C, derating linearly above that temperature - e.g., ~3.5 W at 80 °C ambient. This derating curve is defined in Figure 2 of the Vishay datasheet (Doc. #88370), and must be applied in thermally constrained enclosures or high-temperature industrial deployments using the P6SMB30CA-E3/5B.
How does the P6SMB30CA-E3/5B compare to the P6SMB30A unidirectional variant?
The P6SMB30CA-E3/5B differs from the unidirectional P6SMB30A in polarity behavior and marking: the CA version is bidirectional with no cathode band and identical clamping in both directions, while the A version has a cathode band and conducts only in reverse bias. Electrically, both share identical VWM (30 V), VBR (33.3–36.8 V), and VC (41.4 V) ratings - but the P6SMB30A supports forward surge current (IFSM = 100 A), whereas the P6SMB30CA-E3/5B does not specify IFSM due to symmetrical construction. Use the P6SMB30CA-E3/5B for AC or polarity-agnostic protection; choose P6SMB30A for DC rail protection with forward conduction needs.
P6SMB30CA-E3/5B 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB30CA-E3/5B FAQ
1.How can I place an order for P6SMB30CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB30CA-E3/5B 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 P6SMB30CA-E3/5B reliable?
The price and inventory of P6SMB30CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB30CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB30CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB30CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB30CA-E3/5B?
P6SMB30CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB30CA-E3/5B 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 P6SMB30CA-E3/5B?
For technical support, including P6SMB30CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB30CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB30CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB30CA-E3/5B 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 P6SMB30CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB30CA-E3/5B?
All P6SMB30CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB30CA-E3/5B, 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 P6SMB30CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB30CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB30CA-E3/5B Tags
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