SMA-21-S Sonitron Loudspeaker or Buzzer (Other) In Stock
SMA-21-S is a Sonitron 1.5 → 24 V 85dB SMD Continuous Internal Buzzer, 3300 ± 15% Hz for electronic system designs. Key details include 2 pins in Other from Sonitron. It supports industrial electronics, embedded systems, instrumentation, maintenance repair, and production sourcing programs with worldwide sourcing support.
- Manufacturer
- Sonitron
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SMA-21-S Datasheet PDF
- Category
- Loudspeaker or Buzzer
- Price
- From $7.6447(MOQ 10)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SMA-21-S?
- 2 pins configuration supports practical Loudspeaker or Buzzer design checks
- Other package information helps buyers verify footprint and assembly fit
- Sonitron sourcing profile for industrial electronics and production maintenance
- Suitable for BOM matching, lifecycle review, and replacement procurement workflows
What is SMA-21-S used for?
SMA-21-S is commonly considered for industrial electronics, embedded systems, instrumentation, maintenance repair, and production sourcing programs. Buyers use it for BOM fulfillment, repair programs, and alternate sourcing reviews where loudspeaker or buzzer availability and manufacturer traceability matter. Its 2 pins detail helps engineers confirm board fit and replacement compatibility.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for SMA-21-S?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which design checks make SMA-21-S suitable for loudspeaker or buzzer sourcing?
SMA-21-S should be reviewed against the approved BOM because it provides 2 pins in a loudspeaker or buzzer context for industrial control and related production designs.
For PCB and assembly planning, how should buyers treat the package on SMA-21-S?
Buyers should confirm the 2-pin package footprint and the listed 2 pins before substituting this part, because package mismatch can block assembly even when electrical ratings look similar.
When comparing alternate suppliers, which documented rating is most important to preserve?
Keep the 1.5 to 24 V rating aligned with the original design requirement, then verify manufacturer, lifecycle, and datasheet traceability before approving an alternate RFQ line.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Sonitron
Sonitron is a leading electronic component manufacturer. FindMyChip sources Sonitron ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $7.6447 | $76.45 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
PKLCS1212E2400-R1
Murata Electronics
Loudspeaker or Buzzer
CBT-09427-SMT-TR
CUI Devices
Loudspeaker or Buzzer
CEM-1203(42)
CUI Devices
Loudspeaker or Buzzer
CMT-1603-SMT-TR
CUI Devices
Loudspeaker or Buzzer
PB-1224PE-05Q
Mallory Sonalert
Loudspeaker or Buzzer
KPEG-204A
KINGSTATE
Loudspeaker or Buzzer
PKM17EPP-2002-B0
Murata Electronics
Loudspeaker or Buzzer
CT-1205H-SMT-TR
CUI Devices
Loudspeaker or Buzzer
WT-1205
Soberton Inc.
Loudspeaker or Buzzer
PKLCS1212E40A1-R1
Murata Electronics
Loudspeaker or Buzzer
PS1740P02E
TDK
Loudspeaker or Buzzer
ABI-033-RC
RS Components
Loudspeaker or Buzzer
DMG3418L-7
Diodes Inc.
Loudspeaker or Buzzer
7800731
RS Components
Loudspeaker or Buzzer
7243178
RS Components
Loudspeaker or Buzzer
7243100
RS Components
Loudspeaker or Buzzer
5117620
RS Components
Loudspeaker or Buzzer
KXG1606
KINGSTATE
Loudspeaker or Buzzer
KXG1203C
KINGSTATE
Loudspeaker or Buzzer
KX-1606
KINGSTATE
Loudspeaker or Buzzer
KTG0905CL
KINGSTATE
Loudspeaker or Buzzer
KSSG23J12
KINGSTATE
Loudspeaker or Buzzer
KPEG232A
KINGSTATE
Loudspeaker or Buzzer
KPEG222
KINGSTATE
Loudspeaker or Buzzer