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Vishay General Semiconductor - Diodes Division P6SMB27CAHM3/H
- Part No.:
- P6SMB27CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27CAHM3/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,877
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Product details
Overview
P6SMB27CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection on signal and power lines. It features a 23.1 V stand-off voltage (VWM), 25.7–28.4 V breakdown voltage (VBR) at 1 mA, 37.5 V maximum clamping voltage (VC) at 16.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the P6SMB27CAHM3/H datasheet, P6SMB27CAHM3/H pinout, P6SMB27CAHM3/H application, or P6SMB27CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJA = 100 °C/W) under PCB pad-limited cooling conditions.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding VWM, it avalanches symmetrically in both directions to clamp line voltage to ≤37.5 V at 16.0 A. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C peak.
Designed for repetitive surge suppression, P6SMB27CAHM3/H sustains 600 W peak pulse power (10/1000 µs) at 0.01 % duty cycle and handles 100 A non-repetitive forward surge (8.3 ms half-sine) in unidirectional mode - though its CA suffix confirms bidirectional operation with no polarity marking and identical electrical behavior in either direction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 23.1 V - maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 25.7–28.4 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on across temperature and unit variation |
| VC (Clamping) | 37.5 V at 16.0 A - maximum voltage seen by protected circuit during specified 10/1000 µs surge; determines downstream IC survivability |
| PPPM | 600 W - peak transient energy absorption capability; enables protection against IEC 61000-4-5 Level 4 surges when properly mounted |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; sets power derating slope above 25 °C ambient |
| TJ max. | +150 °C - maximum junction temperature; allows operation in under-hood automotive environments with proper layout |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD per AEC specification; suffix HM3 denotes qualification |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band absent (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; interchangeable connection - protects AC-coupled or floating lines without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against high-energy transients like ISO 7637-2 Pulse 5a without external series impedance |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics requiring zero-failure field reliability over 15-year service life |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling; compatible with J-STD-020 requirements |
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 µA), and long-term parameter stability under thermal cycling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD), improving protection margin for sub-20-V logic interfaces |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching noise in vehicle ECUs. IC Role / Device Role: Bidirectional shunt clamp placed directly at connector entry point to limit transient voltage to <37.5 V before reaching sensitive ASIC inputs. Use Value: Prevents latch-up and gate oxide damage in 5 V/3.3 V sensor signal chains while maintaining signal integrity due to low capacitance (<100 pF at 0 V). |
Use Scenario: Safeguarding PLC digital input modules against 24 V DC supply transients induced by relay coil de-energization or field wiring faults. IC Role / Device Role: Primary overvoltage clamp across input terminals, coordinated with series current-limiting resistor to manage energy dissipation. Use Value: Enables robust Class III surge immunity (IEC 61000-4-5, 2 kV) without derating or parallel devices, reducing BOM count and board space. |
| Telecom Line Card Protection | Consumer Power Adapter Feedback Loop |
|
Use Scenario: Shielding Ethernet PHY interface components (e.g., magnetics, PHY ICs) from lightning-induced surges on PoE or data lines. IC Role / Device Role: Secondary-level TVS placed after primary gas discharge tube (GDT), clamping residual let-through voltage to safe levels. Use Value: Provides precise 37.5 V clamping with fast response (<1 ns), preventing secondary failure of isolated DC/DC converters and PHYs. |
Use Scenario: Securing optocoupler feedback path in isolated AC/DC adapters against output overvoltage events caused by TL431 failure or Zener drift. IC Role / Device Role: Bidirectional clamp across optocoupler LED anode-cathode to prevent destructive reverse bias during fault conditions. Use Value: Maintains closed-loop regulation integrity by limiting feedback node excursion to ±37.5 V, avoiding false triggering of overvoltage protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28CA | 28 V VWM, 31.1–34.4 V VBR, 45.4 V VC at 13.2 A, same SMB package but lower PPPM (400 W) | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); insufficient for ISO 7637-2 Pulse 5a | Select when cost sensitivity outweighs surge energy requirement and AEC-Q101 is not mandated |
| 1.5SMC27CA | 23.1 V VWM, 25.7–28.4 V VBR, 37.5 V VC at 16.0 A, same electrical specs but SMC (DO-214AB) package (larger, 7.11 mm × 6.22 mm) | Higher thermal mass improves power handling margin but requires larger PCB footprint and incompatible tape/reel | Choose when higher surge repetition rate or extended thermal performance is needed and layout space permits |
Compared with SMAJ28CA and 1.5SMC27CA, P6SMB27CAHM3/H delivers AEC-Q101 qualification and 600 W surge capacity in the smallest standardized SMB outline - making it optimal for space-constrained automotive and industrial modules where reliability and footprint are co-prioritized.
Availability
P6SMB27CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and telecom line card surge suppression requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P6SMB27CAHM3/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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on high-reliability, high-efficiency power and protection solutions.
The P6SMB Series targets board-level transient suppression in automotive, industrial, and communications systems - engineered for AEC-Q101 compliance, low-profile mounting, and repeatable clamping performance under harsh thermal and electrical stress.
FAQ
What does the 'CA' suffix indicate in P6SMB27CAHM3/H?
The 'CA' suffix in P6SMB27CAHM3/H designates a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities without cathode marking. This enables direct placement across AC-coupled or floating signal paths - unlike unidirectional variants (e.g., P6SMB27AHM3/H) that require correct orientation relative to ground. The CA variant maintains identical VWM, VBR, and VC specifications in either direction, verified per Vishay Document 88370.
Is P6SMB27CAHM3/H suitable for automotive applications?
Yes, P6SMB27CAHM3/H is AEC-Q101 qualified, as confirmed by the 'HM3' suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and ESD per AEC standards. Its 150 °C maximum junction temperature and MSL Level 1 rating support under-hood deployment in engine control units and body electronics where P6SMB27CAHM3/H serves as primary surge clamp.
What is the maximum clamping voltage of P6SMB27CAHM3/H and at what current?
The maximum clamping voltage (VC) of P6SMB27CAHM3/H is 37.5 V, measured at a peak pulse current (IPPM) of 16.0 A using the standard 10/1000 µs double-exponential waveform. This value is guaranteed across temperature and unit variation per Vishay's Electrical Characteristics table (Document 88370, page 2). It defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with 24 V system interfaces and 3.3 V/5 V logic rails downstream of P6SMB27CAHM3/H.
How does the SMB (DO-214AA) package of P6SMB27CAHM3/H affect thermal performance?
The SMB (DO-214AA) package of P6SMB27CAHM3/H delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This limits continuous power dissipation to 5.0 W at 50 °C ambient and requires derating above that temperature per Figure 2 in Vishay Document 88370. While smaller than SMC, the SMB outline enables high-density layouts - but designers must verify P6SMB27CAHM3/H junction temperature rise under worst-case surge repetition rates using this RθJA value.
Does P6SMB27CAHM3/H have a specified junction capacitance?
Vishay does not publish a guaranteed junction capacitance (CJ) value for P6SMB27CAHM3/H in Document 88370. While Figure 4 shows typical CJ curves for the broader P6SMB family (e.g., ~100 pF at 0 V for 27 V-rated parts), no min/max or test condition is specified for P6SMB27CAHM3/H itself. For high-speed signal line protection (e.g., USB, CAN), designers should treat P6SMB27CAHM3/H as unsuitable unless empirical measurement or alternate low-capacitance TVS devices (e.g., SP3012) are used - since CJ is not characterized or warranted for P6SMB27CAHM3/H.
P6SMB27CAHM3/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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 16A
- 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)
P6SMB27CAHM3/H FAQ
1.How can I place an order for P6SMB27CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27CAHM3/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 P6SMB27CAHM3/H reliable?
The price and inventory of P6SMB27CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB27CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27CAHM3/H?
P6SMB27CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27CAHM3/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 P6SMB27CAHM3/H?
For technical support, including P6SMB27CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27CAHM3/H requirements.
6.How does Aetrix verify that P6SMB27CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB27CAHM3/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 P6SMB27CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB27CAHM3/H?
All P6SMB27CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27CAHM3/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 P6SMB27CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB27CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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