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Vishay General Semiconductor - Diodes Division P6SMB33A-M3/5B
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- Part No.:
- P6SMB33A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33A-M3/5B.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,455
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Product details
Overview
P6SMB33A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 33 V standoff voltage (VWM), 45.7 V maximum clamping voltage (VC) at 13.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning-induced surges in industrial and automotive electronics.
For engineers reviewing the P6SMB33A-M3/5B datasheet, P6SMB33A-M3/5B pinout, P6SMB33A-M3/5B application, or P6SMB33A-M3/5B equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, and halogen-free RoHS-compliant sourcing details specific to the M3/5B tape-and-reel variant.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown and low incremental surge resistance. Its 100 °C/W junction-to-ambient thermal resistance (RθJA) and 20 °C/W junction-to-lead (RθJL) define thermal limits under repetitive surge duty cycles.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and supports automated SMT placement. It delivers 45.7 V clamping at 13.1 A (10/1000 μs), with 0.098 %/°C temperature coefficient of VBR, enabling predictable overvoltage protection across -65 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - Maximum reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR @ IT = 1 mA | 31.4–34.7 V - Measured breakdown voltage range at 1 mA test current; ensures consistent turn-on threshold. |
| VC @ IPPM = 13.1 A | 45.7 V - Clamped voltage during 600 W transient; determines maximum stress imposed on protected circuitry. |
| IPPM | 13.1 A - Peak pulse current capability under 10/1000 μs waveform; defines surge energy handling capacity. |
| PPPM | 600 W - Peak pulse power rating; sets absolute limit for single-event transient energy absorption. |
| TJ max. | +150 °C - Maximum junction temperature; constrains continuous power dissipation and PCB copper pad design. |
| RθJA | 100 °C/W - Thermal resistance to ambient on standard 0.2" × 0.2" copper pads; governs temperature rise under DC bias or repeated pulses. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward conduction | Connected to ground or lower-potential node in unidirectional TVS configuration; enables low-VF forward path during fault. |
| Cathode | Current exit terminal; marked with band | Connected to protected line (e.g., signal or power rail); defines clamping polarity and reverse-biased blocking direction. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports high-energy transient suppression without degradation in industrial motor drive or power supply input stages. |
| 45.7 V clamping voltage at 13.1 A | Ensures downstream 3.3 V or 5 V logic interfaces remain within absolute maximum ratings during ESD or surge events. |
| 0.098 %/°C VBR tempco | Minimizes drift in clamping threshold across automotive (-40 °C to +125 °C) and industrial temperature ranges. |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without popcorn or delamination risk. |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for consumer, telecom, and automotive OEM supply chains. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback signal lines against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between gate driver output and MOSFET gate, or across analog sensor supply rails. Use Value: Limits transient overshoot to ≤45.7 V, preventing gate oxide rupture and ensuring reliable PWM control integrity under 600 W surge conditions. |
Use Scenario: Surge suppression on LIN bus lines and analog outputs of pressure/temperature sensors in engine control modules. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between sensor signal line and chassis ground, with cathode to signal. Use Value: Maintains 28.2 V working margin while clamping fast transients to 45.7 V, preserving signal fidelity and meeting ISO 7637-2 Pulse 1/2a immunity requirements. |
| Telecom Power Supplies | Consumer USB-C Power Delivery |
Use Scenario: Input-stage protection for AC/DC adapters and PoE injectors exposed to lightning-induced surges on primary-side DC bus. IC Role / Device Role / Timing Role: Primary-side unidirectional TVS placed across bulk capacitor terminals or rectifier output. Use Value: Absorbs 600 W pulses without failure, sustaining system uptime during 10/1000 μs transients up to 13.1 A while maintaining <1 μA leakage at 28.2 V. |
Use Scenario: Overvoltage guard on VBUS lines in USB-C receptacles subject to hot-plug transients and adapter mismatch faults. IC Role / Device Role / Timing Role: Clamp diode mounted between VBUS and GND, cathode to VBUS, to suppress >28.2 V excursions. Use Value: Responds in <1 ns to clamp VBUS to ≤45.7 V, protecting PD controller ICs and port power switches without affecting 5–20 V PD negotiation timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5B | Same VWM (28.2 V), identical SMB package, but lower PPPM = 400 W and higher VC = 53.3 V at 7.5 A. | Less robust for high-energy surges; suitable only where 400 W rating suffices and layout allows tighter thermal management. | Select SMAJ33A-E3/5B only if cost sensitivity outweighs need for full 600 W headroom and lower clamping. |
| 1.5SMC33A | Same VWM/VC specs, but larger SMC (DO-214AB) package (2.5 mm vs. 2.2 mm height), higher RθJA ≈ 120 °C/W. | Requires more PCB area and offers inferior thermal performance on same copper pad size; not drop-in compatible. | Choose 1.5SMC33A only when legacy board design mandates SMC footprint or higher IFSM (200 A vs. 100 A) is required. |
Compared with SMAJ33A-E3/5B and 1.5SMC33A, P6SMB33A-M3/5B delivers superior 600 W surge handling and lower 45.7 V clamping in the smallest SMB footprint, making it optimal for space-constrained industrial and automotive designs requiring halogen-free compliance.
Availability
P6SMB33A-M3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power supplies, and consumer USB-C power delivery systems requiring stable component supply with halogen-free, RoHS-compliant sourcing.
Supply support for P6SMB33A-M3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series is designed for robust transient voltage suppression in harsh environments-targeting automotive, industrial, and telecom applications where high pulse power, stable clamping, and AEC-Q101 qualification (in HE3/HM3 variants) are critical.
FAQ
What is the maximum clamping voltage of the P6SMB33A-M3/5B under a 10/1000 μs surge?
The P6SMB33A-M3/5B clamps to a maximum of 45.7 V when subjected to its rated 13.1 A peak pulse current (IPPM) under the standardized 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 transient events. The P6SMB33A-M3/5B maintains this clamping performance across its specified operating temperature range.
Is the P6SMB33A-M3/5B suitable for automotive applications?
The P6SMB33A-M3/5B is halogen-free and RoHS-compliant but is not AEC-Q101 qualified; that qualification applies only to variants with HE3 or HM3 suffixes and revision codes like _B (e.g., P6SMB33AHE3_B). For automotive use, engineers must select the AEC-Q101 version-P6SMB33A-M3/5B itself is intended for commercial and industrial applications where automotive qualification is not mandated.
What does the "M3/5B" suffix indicate in P6SMB33A-M3/5B?
The "M3" suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. The "/5B" indicates packaging in a 13-inch diameter plastic tape-and-reel format containing 3200 units. This distinguishes it from /52 (7-inch reel, 750 units) and confirms compliance with Vishay's commercial-grade material categorization per doc 99912.
How does the thermal resistance of the P6SMB33A-M3/5B affect PCB layout?
The P6SMB33A-M3/5B has a typical RθJA of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain junction temperature below 150 °C under repetitive surges, designers must ensure adequate copper area and avoid excessive trace length or isolation. Reducing pad size or omitting thermal vias increases RθJA, risking thermal runaway during sustained transient activity.
Can the P6SMB33A-M3/5B be used in bidirectional configurations?
No-the P6SMB33A-M3/5B is a unidirectional TVS diode, indicated by the "A" suffix (vs. "CA" for bidirectional). Its cathode band marks polarity, and it conducts only in reverse breakdown. For bidirectional protection, engineers must select the P6SMB33CA-M3/5B variant, which provides symmetrical clamping in both directions and omits the polarity band.
P6SMB33A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- 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 (SMBJ)
P6SMB33A-M3/5B FAQ
1.How can I place an order for P6SMB33A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33A-M3/5B 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 P6SMB33A-M3/5B reliable?
The price and inventory of P6SMB33A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB33A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33A-M3/5B?
P6SMB33A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33A-M3/5B 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 P6SMB33A-M3/5B?
For technical support, including P6SMB33A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33A-M3/5B requirements.
6.How does Aetrix verify that P6SMB33A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB33A-M3/5B 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 P6SMB33A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB33A-M3/5B?
All P6SMB33A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33A-M3/5B, 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 P6SMB33A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB33A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33A-M3/5B Tags
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Diodes Incorporated
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Diodes Incorporated
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