My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMB15AHM3_A/I
- Part No.:
- TPSMB15AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB15AHM3_A/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,978
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMB15AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 15.0 V nominal breakdown voltage (VBR), 12.8 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 21.2 V maximum clamping voltage at 28.3 A surge current, and AEC-Q101 qualification for automotive use.
For engineers reviewing the TPSMB15AHM3_A/I datasheet, TPSMB15AHM3_A/I pinout, TPSMB15AHM3_A/I application, or TPSMB15AHM3_A/I equivalent, this page delivers verified electrical specs, thermal limits (TJ = –65 °C to +185 °C), packaging details (halogen-free, RoHS-compliant, MSL Level 1), and real-world protection use cases in automotive ECUs, industrial sensor interfaces, and power supply rails.
Technical Context
The TPSMB15AHM3_A/I operates as a unidirectional avalanche diode, leveraging passivated anisotropic rectifier technology to deliver fast response (<1 ns) and low incremental surge resistance. Its 15.0 V VBR (min 14.3 V, max 15.8 V @ 1 mA) and 12.8 V VWM enable reliable operation across 12 V automotive and industrial bus systems without leakage-induced false triggering.
Rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), it sustains 185 °C junction temperature and meets JESD201 Class 2 whisker resistance. The device is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for under-hood and high-reliability embedded applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 15.0 V - Ensures precise clamping onset above 12 V system operating voltage while avoiding false conduction. |
| VWM | 12.8 V - Maximum continuous reverse voltage before leakage exceeds 1 μA; compatible with 12 V rail monitoring. |
| VC @ IPPM | 21.2 V - Clamped voltage at 28.3 A surge; protects downstream ICs rated for ≤24 V absolute max. |
| PPPM | 600 W - Sustains 10/1000 µs transients per IEC 61000-4-5 Level 3 without degradation. |
| TJ max. | +185 °C - Enables placement near heat sources (e.g., power MOSFETs, engine control modules) without derating. |
| Package | SMB (DO-214AA) - Standardized footprint with 0.220" x 0.205" pad layout; supports automated SMT assembly. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode indicated by molded band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Molding compound meets UL 94 V-0; matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional polarity | Enables asymmetric clamping only on positive transients - ideal for DC power rails and single-polarity signal lines. |
| 600 W peak pulse power (10/1000 µs) | Handles ISO 7637-2 Pulse 1/2a/5a surges in automotive 12 V systems without failure. |
| 185 °C junction rating | Eliminates thermal derating in under-hood environments up to +125 °C ambient with margin. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and automotive material compliance requirements (e.g., GMW3172). |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without moisture-related popcorning or delamination. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump and alternator ripple. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VIN and GND, clamping spikes within 1 ns to prevent latch-up or damage. Use Value: With 21.2 V clamping at 28.3 A and 185 °C rating, TPSMB15AHM3_A/I maintains protection integrity during repeated cold-crank and load-dump events. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLC I/O modules from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS on 0–10 V or 4–20 mA signal paths, absorbing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Low 12.8 V VWM ensures no interference with sensor full-scale output; 1 μA leakage at VWM preserves measurement accuracy. |
| DC-DC Converter Input Protection | Telecom Power Supply Surge Suppression |
Use Scenario: Safeguarding input stage of 12 V → 3.3 V buck converters in network edge devices exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end clamping device on converter input, coordinated with upstream fuse and common-mode choke. Use Value: 600 W PPPM and 75 A IFSM allow robust handling of 10/1000 µs surges per IEC 61000-4-5, preventing MOSFET gate oxide rupture. | Use Scenario: Protecting -48 V telecom power distribution boards from induced surges on long cable runs in central office installations. IC Role / Device Role / Timing Role: Unidirectional TVS on negative rail, referenced to chassis ground, suppressing positive-going transients on return path. Use Value: AEC-Q101 qualification and 185 °C TJ ensure long-term stability in sealed, high-temp telecom enclosures with minimal maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Same SMB package, 15 V VBR, but not AEC-Q101 qualified; 1000 W PPPM rating (vs. 600 W); higher VC = 24.4 V. | Targeted at industrial/commercial systems where automotive qualification is unnecessary. | Select SMBJ15A only if higher pulse power is required and AEC-Q101 is not mandated. |
| TPSMB15AHM3_A/H | Identical electrical and thermal specs; differs only in tape-and-reel packaging (750 pcs vs. 3200 pcs per reel). | No functional difference; choice depends solely on production volume and SMT line feed requirements. | Choose TPSMB15AHM3_A/H for low-volume prototyping or small-batch builds; TPSMB15AHM3_A/I for high-volume manufacturing. |
Compared with SMBJ15A and TPSMB15AHM3_A/H, the TPSMB15AHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and optimized 600 W clamping performance in a cost-effective SMB format - making it the preferred choice for automotive Tier-1 suppliers and industrial OEMs requiring traceable, compliant surge protection.
Availability
TPSMB15AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interface modules, and telecom power supply designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant transient protection.
Supply support for TPSMB15AHM3_A/I 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, TVS devices, and optoelectronics with emphasis on reliability, thermal performance, and automotive-grade validation.
The TPSMB series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient voltage suppressor family, engineered specifically for high-temperature, high-reliability protection in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the breakdown voltage tolerance for TPSMB15AHM3_A/I?
The TPSMB15AHM3_A/I has a specified breakdown voltage range of 14.3 V (minimum) to 15.8 V (maximum) at 1 mA test current, with a nominal value of 15.0 V. This ±5% tolerance ensures consistent clamping behavior across production lots while maintaining compatibility with 12 V system margins. All values are measured per ANSI/IEEE C62.35 standards and validated during AEC-Q101 qualification testing.
Is TPSMB15AHM3_A/I suitable for bidirectional transient suppression?
No, TPSMB15AHM3_A/I is strictly unidirectional and must be used with correct polarity - cathode connected to the line being protected. It does not suppress negative-going transients below ground. For bidirectional protection, a separate device such as a symmetric TVS array or a dedicated bidirectional part like SMAJ15CA would be required. The datasheet explicitly states "Available in unidirectional polarity only" for the entire TPSMB6.8A–TPSMB43A family.
What is the maximum clamping voltage of TPSMB15AHM3_A/I at its rated surge current?
The maximum clamping voltage (VC) of TPSMB15AHM3_A/I is 21.2 V at 28.3 A peak pulse current (IPPM) using a 10/1000 µs waveform. This value is guaranteed across temperature and lifetime, and reflects the worst-case voltage seen by downstream circuitry during a full-rated surge event - critical for ensuring compatibility with 24 V tolerant ICs and MOSFETs.
Does TPSMB15AHM3_A/I require derating at elevated ambient temperatures?
Yes, TPSMB15AHM3_A/I must be derated above 25 °C ambient per Figure 2 in the datasheet. At 125 °C ambient, its peak pulse power capability drops to approximately 45% of the 600 W rating at 25 °C. However, its 185 °C maximum junction temperature allows continued operation in high-temp environments when PCB copper area and thermal design are optimized per the 0.2" × 0.2" pad recommendation.
How does the HM3 suffix differ from HE3 in TPSMB15A variants?
The HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, whereas HE3 is RoHS-compliant and AEC-Q101-qualified but not halogen-free. Both meet JESD201 Class 2 whisker resistance and MSL Level 1, but HM3 satisfies stricter environmental mandates such as Volvo VCS 1027,149 and Ford WSS-M99P9999-A1. TPSMB15AHM3_A/I is the halogen-free variant intended for global automotive programs.
TPSMB15AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB15AHM3_A/I FAQ
1.How can I place an order for TPSMB15AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB15AHM3_A/I 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 TPSMB15AHM3_A/I reliable?
The price and inventory of TPSMB15AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB15AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB15AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB15AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB15AHM3_A/I?
TPSMB15AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB15AHM3_A/I 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 TPSMB15AHM3_A/I?
For technical support, including TPSMB15AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB15AHM3_A/I requirements.
6.How does Aetrix verify that TPSMB15AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB15AHM3_A/I 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 TPSMB15AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB15AHM3_A/I?
All TPSMB15AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB15AHM3_A/I, 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 TPSMB15AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMB15AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB15AHM3_A/I 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 …
